sql_yacc.yy 260 KB
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/* Copyright (C) 2000-2003 MySQL AB
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

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/* sql_yacc.yy */
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%{
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/* thd is passed as an arg to yyparse(), and subsequently to yylex().
** The type will be void*, so it must be  cast to (THD*) when used.
** Use the YYTHD macro for this.
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*/
#define YYPARSE_PARAM yythd
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#define YYLEX_PARAM yythd
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#define YYTHD ((THD *)yythd)

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#define MYSQL_YACC
#define YYINITDEPTH 100
#define YYMAXDEPTH 3200				/* Because of 64K stack */
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#define Lex (YYTHD->lex)
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#define Select Lex->current_select
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#include "mysql_priv.h"
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#include "slave.h"
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#include "lex_symbol.h"
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#include "item_create.h"
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#include "sp_head.h"
#include "sp_pcontext.h"
#include "sp_rcontext.h"
#include "sp.h"
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#include "event.h"
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#include <myisam.h>
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#include <myisammrg.h>
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int yylex(void *yylval, void *yythd);
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const LEX_STRING null_lex_str={0,0};

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#define yyoverflow(A,B,C,D,E,F) {ulong val= *(F); if (my_yyoverflow((B), (D), &val)) { yyerror((char*) (A)); return 2; } else { *(F)= (YYSIZE_T)val; }}
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#define WARN_DEPRECATED(A,B)                                        \
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  push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN, \
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		      ER_WARN_DEPRECATED_SYNTAX,                    \
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		      ER(ER_WARN_DEPRECATED_SYNTAX), (A), (B));
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#define YYERROR_UNLESS(A)                  \
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  if (!(A))                             \
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  {					\
    yyerror(ER(ER_SYNTAX_ERROR));	\
    YYABORT;				\
  }

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/* Helper for parsing "IS [NOT] truth_value" */
inline Item *is_truth_value(Item *A, bool v1, bool v2)
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{
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  return new Item_func_if(create_func_ifnull(A,
	new Item_int((char *) (v2 ? "TRUE" : "FALSE"), v2, 1)),
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	new Item_int((char *) (v1 ? "TRUE" : "FALSE"), v1, 1),
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	new Item_int((char *) (v1 ? "FALSE" : "TRUE"),!v1, 1));
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}

%}
%union {
  int  num;
  ulong ulong_num;
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  ulonglong ulonglong_number;
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  longlong longlong_number;
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  LEX_STRING lex_str;
  LEX_STRING *lex_str_ptr;
  LEX_SYMBOL symbol;
  Table_ident *table;
  char *simple_string;
  Item *item;
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  Item_num *item_num;
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  List<Item> *item_list;
  List<String> *string_list;
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  String *string;
  key_part_spec *key_part;
  TABLE_LIST *table_list;
  udf_func *udf;
  LEX_USER *lex_user;
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  struct sys_var_with_base variable;
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  enum enum_var_type var_type;
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  Key::Keytype key_type;
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  enum ha_key_alg key_alg;
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  enum db_type db_type;
  enum row_type row_type;
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  enum ha_rkey_function ha_rkey_mode;
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  enum enum_tx_isolation tx_isolation;
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  enum Cast_target cast_type;
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  enum Item_udftype udf_type;
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  CHARSET_INFO *charset;
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  thr_lock_type lock_type;
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  interval_type interval, interval_time_st;
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  timestamp_type date_time_type;
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  st_select_lex *select_lex;
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  chooser_compare_func_creator boolfunc2creator;
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  struct sp_cond_type *spcondtype;
  struct { int vars, conds, hndlrs, curs; } spblock;
  sp_name *spname;
  struct st_lex *lex;
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}

%{
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bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
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%}

%pure_parser					/* We have threads */

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%token  UNSIGNED
%token  UNTIL_SYM
%token  UPDATE_SYM
%token  USAGE
%token  USER
%token  USE_FRM
%token  USE_SYM
%token  USING
%token  UTC_DATE_SYM
%token  UTC_TIMESTAMP_SYM
%token  UTC_TIME_SYM
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%token  VAR_SAMP_SYM
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%token  VALUES
%token  VALUE_SYM
%token  VARBINARY
%token  VARCHAR
%token  VARIABLES
%token  VARIANCE_SYM
%token  VARYING
%token  VIEW_SYM
%token  WARNINGS
%token  WEEK_SYM
%token  WHEN_SYM
%token  WHERE
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%token  WHILE_SYM
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%token  WITH
%token  WORK_SYM
%token  WRITE_SYM
%token  X509_SYM
%token  XA_SYM
%token  XOR
%token  YEARWEEK
%token  YEAR_MONTH_SYM
%token  YEAR_SYM
%token  ZEROFILL
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%left   JOIN_SYM INNER_SYM STRAIGHT_JOIN CROSS LEFT RIGHT
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/* A dummy token to force the priority of table_ref production in a join. */
%left   TABLE_REF_PRIORITY
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%left   SET_VAR
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%left	OR_OR_SYM OR_SYM OR2_SYM XOR
%left	AND_SYM AND_AND_SYM
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%left	BETWEEN_SYM CASE_SYM WHEN_SYM THEN_SYM ELSE
%left	EQ EQUAL_SYM GE GT_SYM LE LT NE IS LIKE REGEXP IN_SYM
%left	'|'
%left	'&'
%left	SHIFT_LEFT SHIFT_RIGHT
%left	'-' '+'
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%left	'*' '/' '%' DIV_SYM MOD_SYM
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%left   '^'
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%left	NEG '~'
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%right	NOT_SYM NOT2_SYM
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%right	BINARY COLLATE_SYM
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%type <lex_str>
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        IDENT IDENT_QUOTED TEXT_STRING DECIMAL_NUM FLOAT_NUM NUM LONG_NUM HEX_NUM
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	LEX_HOSTNAME ULONGLONG_NUM field_ident select_alias ident ident_or_text
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        UNDERSCORE_CHARSET IDENT_sys TEXT_STRING_sys TEXT_STRING_literal
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	NCHAR_STRING opt_component key_cache_name
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        sp_opt_label BIN_NUM label_ident
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%type <lex_str_ptr>
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	opt_table_alias opt_fulltext_parser
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%type <table>
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	table_ident table_ident_nodb references xid
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%type <simple_string>
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	remember_name remember_end opt_ident opt_db text_or_password
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	opt_constraint constraint ident_or_empty
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%type <string>
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	text_string opt_gconcat_separator
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%type <num>
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	type int_type real_type order_dir lock_option
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	udf_type if_exists opt_local opt_table_options table_options
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        table_option opt_if_not_exists opt_no_write_to_binlog
        delete_option opt_temporary all_or_any opt_distinct
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        opt_ignore_leaves fulltext_options spatial_type union_option
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        start_transaction_opts opt_chain opt_release
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        union_opt select_derived_init option_type2
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%type <ulong_num>
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	ulong_num raid_types merge_insert_types
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%type <ulonglong_number>
	ulonglong_num
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%type <longlong_number>
        part_bit_expr

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%type <lock_type>
	replace_lock_option opt_low_priority insert_lock_option load_data_lock

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%type <item>
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	literal text_literal insert_ident order_ident
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	simple_ident select_item2 expr opt_expr opt_else sum_expr in_sum_expr
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	bool_term bool_factor bool_test bool_pri 
	predicate bit_expr bit_term bit_factor value_expr term factor
	table_wild simple_expr udf_expr
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	expr_or_default set_expr_or_default interval_expr
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	param_marker singlerow_subselect singlerow_subselect_init
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	exists_subselect exists_subselect_init geometry_function
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	signed_literal now_or_signed_literal opt_escape
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	sp_opt_default
	simple_ident_nospvar simple_ident_q
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        field_or_var limit_option
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        part_func_expr
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%type <item_num>
	NUM_literal
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%type <item_list>
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	expr_list udf_expr_list udf_expr_list2 when_list
	ident_list ident_list_arg
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%type <var_type>
        option_type opt_var_type opt_var_ident_type

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%type <key_type>
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	key_type opt_unique_or_fulltext constraint_key_type
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%type <key_alg>
	key_alg opt_btree_or_rtree

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%type <string_list>
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	key_usage_list using_list
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%type <key_part>
	key_part

%type <table_list>
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	join_table_list  join_table
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        table_factor table_ref
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        select_derived derived_table_list
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%type <date_time_type> date_time_type;
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%type <interval> interval

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%type <interval_time_st> interval_time_st

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%type <db_type> storage_engines
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%type <row_type> row_types

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%type <tx_isolation> isolation_types
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%type <ha_rkey_mode> handler_rkey_mode

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%type <cast_type> cast_type
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%type <udf_type> udf_func_type

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%type <symbol> FUNC_ARG0 FUNC_ARG1 FUNC_ARG2 FUNC_ARG3 keyword keyword_sp
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%type <lex_user> user grant_user get_definer
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%type <charset>
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	opt_collate
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	charset_name
	charset_name_or_default
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	old_or_new_charset_name
	old_or_new_charset_name_or_default
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	collation_name
	collation_name_or_default
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%type <variable> internal_variable_name

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%type <select_lex> in_subselect in_subselect_init
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	get_select_lex
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%type <boolfunc2creator> comp_op

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%type <NONE>
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	query verb_clause create change select do drop insert replace insert2
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	insert_values update delete truncate rename
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	show describe load alter optimize keycache preload flush
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	reset purge begin commit rollback savepoint release
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	slave master_def master_defs master_file_def slave_until_opts
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	repair restore backup analyze check start checksum
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	field_list field_list_item field_spec kill column_def key_def
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	keycache_list assign_to_keycache preload_list preload_keys
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	select_item_list select_item values_list no_braces
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	opt_limit_clause delete_limit_clause fields opt_values values
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	procedure_list procedure_list2 procedure_item
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	when_list2 expr_list2 udf_expr_list3 handler
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	opt_precision opt_ignore opt_column opt_restrict
	grant revoke set lock unlock string_list field_options field_option
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	field_opt_list opt_binary table_lock_list table_lock
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	ref_list opt_on_delete opt_on_delete_list opt_on_delete_item use
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	opt_delete_options opt_delete_option varchar nchar nvarchar
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	opt_outer table_list table_name opt_option opt_place
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	opt_attribute opt_attribute_list attribute column_list column_list_id
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	opt_column_list grant_privileges grant_ident grant_list grant_option
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	object_privilege object_privilege_list user_list rename_list
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	clear_privileges flush_options flush_option
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	equal optional_braces opt_key_definition key_usage_list2
	opt_mi_check_type opt_to mi_check_types normal_join
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	table_to_table_list table_to_table opt_table_list opt_as
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	handler_rkey_function handler_read_or_scan
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	single_multi table_wild_list table_wild_one opt_wild
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	union_clause union_list
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	precision subselect_start opt_and charset
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	subselect_end select_var_list select_var_list_init help opt_len
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	opt_extended_describe
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        prepare prepare_src execute deallocate
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	statement sp_suid
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	sp_c_chistics sp_a_chistics sp_chistic sp_c_chistic xa
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        load_data opt_field_or_var_spec fields_or_vars opt_load_data_set_spec
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        definer view_replace_or_algorithm view_replace view_algorithm_opt
        view_algorithm view_or_trigger_tail view_suid view_tail view_list_opt
        view_list view_select view_check_option trigger_tail
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        install uninstall partition_entry
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END_OF_INPUT
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%type <NONE> call sp_proc_stmts sp_proc_stmts1 sp_proc_stmt
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%type <NONE> sp_proc_stmt_statement sp_proc_stmt_return
%type <NONE> sp_proc_stmt_if sp_proc_stmt_case_simple sp_proc_stmt_case
%type <NONE> sp_labeled_control sp_proc_stmt_unlabeled sp_proc_stmt_leave
%type <NONE> sp_proc_stmt_iterate sp_proc_stmt_label sp_proc_stmt_goto
%type <NONE> sp_proc_stmt_open sp_proc_stmt_fetch sp_proc_stmt_close

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%type <num>  sp_decl_idents sp_opt_inout sp_handler_type sp_hcond_list
%type <spcondtype> sp_cond sp_hcond
%type <spblock> sp_decls sp_decl
%type <lex> sp_cursor_stmt
%type <spname> sp_name

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%type <NONE>
	'-' '+' '*' '/' '%' '(' ')'
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	',' '!' '{' '}' '&' '|' AND_SYM OR_SYM OR_OR_SYM BETWEEN_SYM CASE_SYM
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	THEN_SYM WHEN_SYM DIV_SYM MOD_SYM OR2_SYM AND_AND_SYM
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%%


query:
	END_OF_INPUT
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	{
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	   THD *thd= YYTHD;
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	   if (!thd->bootstrap &&
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	      (!(thd->lex->select_lex.options & OPTION_FOUND_COMMENT)))
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	   {
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	     my_message(ER_EMPTY_QUERY, ER(ER_EMPTY_QUERY), MYF(0));
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	     YYABORT;
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	   }
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	   else
	   {
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	     thd->lex->sql_command= SQLCOM_EMPTY_QUERY;
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	   }
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	}
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	| verb_clause END_OF_INPUT {};
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verb_clause:
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	  statement
	| begin
	;

/* Verb clauses, except begin */
statement:
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	  alter
	| analyze
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	| backup
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	| call
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	| change
	| check
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	| checksum
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	| commit
	| create
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        | deallocate
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	| delete
	| describe
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	| do
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	| drop
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        | execute
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	| flush
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	| grant
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	| handler
	| help
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	| insert
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        | install
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	| kill
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	| load
	| lock
	| optimize
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        | keycache
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        | partition_entry
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	| preload
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        | prepare
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	| purge
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	| release
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	| rename
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	| repair
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	| replace
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	| reset
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	| restore
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	| revoke
	| rollback
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	| savepoint
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	| select
	| set
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	| show
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	| slave
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	| start
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	| truncate
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        | uninstall
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	| unlock
	| update
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	| use
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	| xa
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        ;
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deallocate:
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        deallocate_or_drop PREPARE_SYM ident
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        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (lex->stmt_prepare_mode)
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          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_DEALLOCATE_PREPARE;
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          lex->prepared_stmt_name= $3;
        };

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deallocate_or_drop:
	DEALLOCATE_SYM |
	DROP
	;


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prepare:
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        PREPARE_SYM ident FROM prepare_src
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        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (lex->stmt_prepare_mode)
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          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_PREPARE;
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          lex->prepared_stmt_name= $2;
        };

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prepare_src:
        TEXT_STRING_sys
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $1;
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          lex->prepared_stmt_code_is_varref= FALSE;
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        }
        | '@' ident_or_text
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $2;
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          lex->prepared_stmt_code_is_varref= TRUE;
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        };
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execute:
        EXECUTE_SYM ident
        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
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          if (lex->stmt_prepare_mode)
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          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
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          lex->sql_command= SQLCOM_EXECUTE;
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          lex->prepared_stmt_name= $2;
        }
        execute_using
        {}
        ;

execute_using:
        /* nothing */
        | USING execute_var_list
        ;

execute_var_list:
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        execute_var_list ',' execute_var_ident
        | execute_var_ident
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        ;

execute_var_ident: '@' ident_or_text
        {
          LEX *lex=Lex;
          LEX_STRING *lexstr= (LEX_STRING*)sql_memdup(&$2, sizeof(LEX_STRING));
          if (!lexstr || lex->prepared_stmt_params.push_back(lexstr))
              YYABORT;
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        }
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        ;

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/* help */

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help:
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       HELP_SYM
       {
         if (Lex->sphead)
         {
           my_error(ER_SP_BADSTATEMENT, MYF(0), "HELP");
           YYABORT;
         }
       }
       ident_or_text
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       {
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	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_HELP;
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	  lex->help_arg= $3.str;
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       };
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/* change master */

change:
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       CHANGE MASTER_SYM TO_SYM
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        {
	  LEX *lex = Lex;
	  lex->sql_command = SQLCOM_CHANGE_MASTER;
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	  bzero((char*) &lex->mi, sizeof(lex->mi));
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        }
       master_defs
	{}
       ;
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master_defs:
       master_def
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       | master_defs ',' master_def;
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master_def:
       MASTER_HOST_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.host = $3.str;
       }
       |
       MASTER_USER_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.user = $3.str;
       }
       |
       MASTER_PASSWORD_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.password = $3.str;
       }
       |
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       MASTER_PORT_SYM EQ ulong_num
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       {
	 Lex->mi.port = $3;
       }
       |
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       MASTER_CONNECT_RETRY_SYM EQ ulong_num
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       {
	 Lex->mi.connect_retry = $3;
       }
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       | MASTER_SSL_SYM EQ ulong_num
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         {
           Lex->mi.ssl= $3 ? 
               LEX_MASTER_INFO::SSL_ENABLE : LEX_MASTER_INFO::SSL_DISABLE;
         }
       | MASTER_SSL_CA_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_ca= $3.str;
         }
       | MASTER_SSL_CAPATH_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_capath= $3.str;
         }
       | MASTER_SSL_CERT_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_cert= $3.str;
         }
       | MASTER_SSL_CIPHER_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_cipher= $3.str;
         }
       | MASTER_SSL_KEY_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.ssl_key= $3.str;
	 }
       |
         master_file_def
       ;

master_file_def:
       MASTER_LOG_FILE_SYM EQ TEXT_STRING_sys
       {
	 Lex->mi.log_file_name = $3.str;
       }
       | MASTER_LOG_POS_SYM EQ ulonglong_num
         {
           Lex->mi.pos = $3;
           /* 
              If the user specified a value < BIN_LOG_HEADER_SIZE, adjust it
              instead of causing subsequent errors. 
              We need to do it in this file, because only there we know that 
              MASTER_LOG_POS has been explicitely specified. On the contrary
              in change_master() (sql_repl.cc) we cannot distinguish between 0
              (MASTER_LOG_POS explicitely specified as 0) and 0 (unspecified),
              whereas we want to distinguish (specified 0 means "read the binlog
              from 0" (4 in fact), unspecified means "don't change the position
              (keep the preceding value)").
           */
           Lex->mi.pos = max(BIN_LOG_HEADER_SIZE, Lex->mi.pos);
         }
       | RELAY_LOG_FILE_SYM EQ TEXT_STRING_sys
         {
           Lex->mi.relay_log_name = $3.str;
         }
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       | RELAY_LOG_POS_SYM EQ ulong_num
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         {
           Lex->mi.relay_log_pos = $3;
           /* Adjust if < BIN_LOG_HEADER_SIZE (same comment as Lex->mi.pos) */
           Lex->mi.relay_log_pos = max(BIN_LOG_HEADER_SIZE, Lex->mi.relay_log_pos);
         }
       ;

/* create a table */

create:
	CREATE opt_table_options TABLE_SYM opt_if_not_exists table_ident
	{
	  THD *thd= YYTHD;
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_CREATE_TABLE;
	  if (!lex->select_lex.add_table_to_list(thd, $5, NULL,
						 TL_OPTION_UPDATING,
						 (using_update_log ?
						  TL_READ_NO_INSERT:
						  TL_READ)))
	    YYABORT;
	  lex->create_list.empty();
	  lex->key_list.empty();
	  lex->col_list.empty();
	  lex->change=NullS;
	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	  lex->create_info.options=$2 | $4;
	  lex->create_info.db_type= (enum db_type) lex->thd->variables.table_type;
	  lex->create_info.default_table_charset= NULL;
	  lex->name=0;
	}
	create2
	  { Lex->current_select= &Lex->select_lex; }
	| CREATE opt_unique_or_fulltext INDEX_SYM ident key_alg ON table_ident
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_CREATE_INDEX;
	    if (!lex->current_select->add_table_to_list(lex->thd, $7, NULL,
							TL_OPTION_UPDATING))
	      YYABORT;
	    lex->create_list.empty();
	    lex->key_list.empty();
	    lex->col_list.empty();
	    lex->change=NullS;
	  }
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	   '(' key_list ')' opt_fulltext_parser
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	  {
	    LEX *lex=Lex;
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	    if ($2 != Key::FULLTEXT && $12)
	    {
	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
	    lex->key_list.push_back(new Key($2,$4.str,$5,0,lex->col_list,$12));
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	    lex->col_list.empty();
	  }
	| CREATE DATABASE opt_if_not_exists ident
	  {
             Lex->create_info.default_table_charset= NULL;
             Lex->create_info.used_fields= 0;
          }
	  opt_create_database_options
	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_CREATE_DB;
	    lex->name=$4.str;
            lex->create_info.options=$3;
	  }
	| CREATE udf_func_type FUNCTION_SYM sp_name
	  {
	    LEX *lex=Lex;
	    lex->spname= $4;
	    lex->udf.type= $2;
	  }
	  create_function_tail
	  {}
	| CREATE PROCEDURE sp_name
	  {
	    LEX *lex= Lex;
	    sp_head *sp;

	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "PROCEDURE");
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	      YYABORT;
	    }
	    /* Order is important here: new - reset - init */
	    sp= new sp_head();
	    sp->reset_thd_mem_root(YYTHD);
	    sp->init(lex);

	    sp->m_type= TYPE_ENUM_PROCEDURE;
	    lex->sphead= sp;
	    /*
	     * We have to turn of CLIENT_MULTI_QUERIES while parsing a
	     * stored procedure, otherwise yylex will chop it into pieces
	     * at each ';'.
	     */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
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	    YYTHD->client_capabilities &= (~CLIENT_MULTI_QUERIES);
	  }
          '('
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_begin= lex->tok_start+1;
	  }
	  sp_pdparam_list
	  ')'
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_end= lex->tok_start;
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  }
	  sp_c_chistics
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_chistics= &lex->sp_chistics;
	    lex->sphead->m_body_begin= lex->tok_start;
	  }
	  sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    if (sp->check_backpatch(YYTHD))
	      YYABORT;
	    sp->init_strings(YYTHD, lex, $3);
	    lex->sql_command= SQLCOM_CREATE_PROCEDURE;
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	    /* Restore flag if it was cleared above */
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	    YYTHD->client_capabilities |= $<ulong_num>3;
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	    sp->restore_thd_mem_root(YYTHD);
	  }
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	| CREATE
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	  {
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            Lex->create_view_mode= VIEW_CREATE_NEW;
            Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED;
            Lex->create_view_suid= TRUE;
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	  }
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	  view_or_trigger
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	  {}
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	| CREATE USER clear_privileges grant_list
	  {
	    Lex->sql_command = SQLCOM_CREATE_USER;
          }
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	| CREATE EVENT_SYM opt_if_not_exists sp_name
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          /* 
             BE CAREFUL when you add a new rule to update the block where 
             YYTHD->client_capabilities is set back to original value
          */
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          {
            LEX *lex=Lex;

            if (lex->et)
            {
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              /*
                Recursive events are not possible because recursive SPs
                are not also possible. lex->sp_head is not stacked.
              */
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              // ToDo Andrey : Change the error message
              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
              YYABORT;
            }

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            lex->create_info.options= $3;
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            if (!(lex->et= new event_timed())) // implicitly calls event_timed::init()
              YYABORT;
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            /*
              We have to turn of CLIENT_MULTI_QUERIES while parsing a
              stored procedure, otherwise yylex will chop it into pieces
              at each ';'.
            */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
            YYTHD->client_capabilities &= (~CLIENT_MULTI_QUERIES);

            if (!lex->et_compile_phase) 
              lex->et->init_name(YYTHD, $4);

            lex->sphead= 0;//defensive programming
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          }
          ON SCHEDULE_SYM ev_schedule_time
          ev_on_completion
          ev_status
          ev_comment
          DO_SYM ev_sql_stmt
          {
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            /*
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              Restore flag if it was cleared above
              $1 - CREATE
              $2 - EVENT_SYM
              $3 - opt_if_not_exists
              $4 - sp_name
              $5 - the block above
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            */
            YYTHD->client_capabilities |= $<ulong_num>5;
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            /*
              sql_command is set here because some rules in ev_sql_stmt
              can overwrite it
            */
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            Lex->sql_command= SQLCOM_CREATE_EVENT;
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          }
      ;

ev_schedule_time: EVERY_SYM expr interval
	  {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
            {
              switch (lex->et->init_interval(YYTHD , $2, $3)) {
              case EVEX_PARSE_ERROR:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
                break;
              case EVEX_BAD_PARAMS:
                my_error(ER_EVENT_INTERVAL_NOT_POSITIVE, MYF(0));
                YYABORT;
                break;
              }
            }
          }
          ev_starts
          ev_ends
        | AT_SYM expr
          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
            {
              switch (lex->et->init_execute_at(YYTHD, $2)) {
              case EVEX_PARSE_ERROR:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;  
                break;
              case EVEX_BAD_PARAMS:
                my_error(ER_EVENT_EXEC_TIME_IN_THE_PAST, MYF(0));
                YYABORT;
                break;             
              }
            }
          }
      ;
    
ev_status: /* empty */
        | ENABLE_SYM
          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
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              lex->et->m_status= MYSQL_EVENT_ENABLED;	   
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          }
        | DISABLE_SYM
          {
            LEX *lex=Lex;
            
            if (!lex->et_compile_phase)
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              lex->et->m_status= MYSQL_EVENT_DISABLED;
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          }
      ;
ev_starts: /* empty */
        | STARTS_SYM expr
          {
            LEX *lex= Lex;
            if (!lex->et_compile_phase)
              lex->et->init_starts(YYTHD, $2);
          }
      ;
ev_ends: /* empty */
        | ENDS_SYM expr
          {
            LEX *lex= Lex;
            if (!lex->et_compile_phase)
            {
              switch (lex->et->init_ends(YYTHD, $2)) {
              case EVEX_PARSE_ERROR:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
                break;
              case EVEX_BAD_PARAMS:
                my_error(ER_EVENT_ENDS_BEFORE_STARTS, MYF(0));
                YYABORT;
                break;
              }
            }
          }
      ;
ev_on_completion: /* empty */
        | ON COMPLETION_SYM PRESERVE_SYM
          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
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              lex->et->m_on_completion= MYSQL_EVENT_ON_COMPLETION_PRESERVE;  
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          }
        | ON COMPLETION_SYM NOT_SYM PRESERVE_SYM
          {
            LEX *lex=Lex;
            if (!lex->et_compile_phase)
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              lex->et->m_on_completion= MYSQL_EVENT_ON_COMPLETION_DROP;	    
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          }
      ;
ev_comment: /* empty */
        | COMMENT_SYM TEXT_STRING_sys
          {
            LEX *lex= Lex;
            if (!lex->et_compile_phase)
            {
              lex->comment= $2;
              lex->et->init_comment(YYTHD, &$2);
            }
          }
      ;

ev_sql_stmt:
          {
            LEX *lex= Lex;
            sp_head *sp;
	  
            if (!(sp= new sp_head()))
              YYABORT;

            sp->reset_thd_mem_root(YYTHD);
            sp->init(lex);
            
            sp->m_type= TYPE_ENUM_PROCEDURE;
            lex->sphead= sp;

            bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
            lex->sphead->m_chistics= &lex->sp_chistics;
	
            lex->sphead->m_body_begin= lex->ptr;
            if (!lex->et_compile_phase)
              lex->et->m_body_begin= lex->ptr;
          }
          ev_sql_stmt_inner
          {
            LEX *lex=Lex;
            sp_head *sp= lex->sphead;
            // return back to the original memory root ASAP
            sp->init_strings(YYTHD, lex, NULL);
            sp->restore_thd_mem_root(YYTHD);
	    
            lex->sp_chistics.suid= SP_IS_SUID;//always the definer!

            if (!lex->et_compile_phase)
            {
              lex->et->init_body(YYTHD);
              lex->et->init_definer(YYTHD);
            }
          }
      ;
	  
ev_sql_stmt_inner:
          sp_proc_stmt_statement
        | sp_proc_stmt_return
        | sp_proc_stmt_if
        | sp_proc_stmt_case_simple
        | sp_proc_stmt_case
        | sp_labeled_control {}
        | sp_proc_stmt_unlabeled
        | sp_proc_stmt_leave
        | sp_proc_stmt_iterate
        | sp_proc_stmt_label
        | sp_proc_stmt_goto
        | sp_proc_stmt_open
        | sp_proc_stmt_fetch
        | sp_proc_stmt_close
      ;
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clear_privileges:
        /* Nothing */
        {
          LEX *lex=Lex;
          lex->users_list.empty();
          lex->columns.empty();
          lex->grant= lex->grant_tot_col= 0;
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	  lex->all_privileges= 0;
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          lex->select_lex.db= 0;
          lex->ssl_type= SSL_TYPE_NOT_SPECIFIED;
          lex->ssl_cipher= lex->x509_subject= lex->x509_issuer= 0;
          bzero((char *)&(lex->mqh),sizeof(lex->mqh));
        }
        ;

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sp_name:
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	  ident '.' ident
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	  {
	    $$= new sp_name($1, $3);
	    $$->init_qname(YYTHD);
	  }
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	| ident
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	  {
	    $$= sp_name_current_db_new(YYTHD, $1);
	  }
	;

create_function_tail:
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	  RETURNS_SYM udf_type SONAME_SYM TEXT_STRING_sys
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	  {
	    LEX *lex=Lex;
	    lex->sql_command = SQLCOM_CREATE_FUNCTION;
	    lex->udf.name = lex->spname->m_name;
	    lex->udf.returns=(Item_result) $2;
	    lex->udf.dl=$4.str;
	  }
	| '('
	  {
	    LEX *lex= Lex;
	    sp_head *sp;

	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "FUNCTION");
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	      YYABORT;
	    }
	    /* Order is important here: new - reset - init */
	    sp= new sp_head();
	    sp->reset_thd_mem_root(YYTHD);
	    sp->init(lex);

	    sp->m_type= TYPE_ENUM_FUNCTION;
	    lex->sphead= sp;
	    /*
	     * We have to turn of CLIENT_MULTI_QUERIES while parsing a
	     * stored procedure, otherwise yylex will chop it into pieces
	     * at each ';'.
	     */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
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	    YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
	    lex->sphead->m_param_begin= lex->tok_start+1;
	  }
          sp_fdparam_list ')'
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_param_end= lex->tok_start;
	  }
	  RETURNS_SYM
	  {
	    LEX *lex= Lex;
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	    lex->charset= NULL;
	    lex->length= lex->dec= NULL;
	    lex->interval_list.empty();
	    lex->type= 0;
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	  }
	  type
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
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            LEX_STRING cmt = { 0, 0 };
	    create_field *new_field;
	    uint unused1= 0;
	    int unused2= 0;

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	    if (!(new_field= new_create_field(YYTHD, (char*) "",
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					      (enum enum_field_types)$8,
			  		      lex->length, lex->dec, lex->type,
			  		      (Item *)0, (Item *) 0, &cmt, 0,
					      &lex->interval_list, 
			  		      (lex->charset ? lex->charset :
					       default_charset_info),
					      lex->uint_geom_type)))
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	      YYABORT;

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	    sp->m_returns_cs= new_field->charset;

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            if (new_field->interval_list.elements)
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            {
	      new_field->interval= 
                sp->create_typelib(&new_field->interval_list);
            }
            sp_prepare_create_field(YYTHD, new_field);

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	    if (prepare_create_field(new_field, &unused1, &unused2, &unused2,
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				     HA_CAN_GEOMETRY))
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	      YYABORT;

	    sp->m_returns= new_field->sql_type;
	    sp->m_returns_cs= new_field->charset;
	    sp->m_returns_len= new_field->length;
	    sp->m_returns_pack= new_field->pack_flag;
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            sp->m_returns_typelib= new_field->interval;
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            sp->m_geom_returns= new_field->geom_type;
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            new_field->interval= NULL;
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	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  }
	  sp_c_chistics
	  {
	    LEX *lex= Lex;

	    lex->sphead->m_chistics= &lex->sp_chistics;
	    lex->sphead->m_body_begin= lex->tok_start;
	  }
	  sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

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            if (sp->is_not_allowed_in_function("function"))
              YYABORT;

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	    if (sp->check_backpatch(YYTHD))
	      YYABORT;
	    lex->sql_command= SQLCOM_CREATE_SPFUNCTION;
	    sp->init_strings(YYTHD, lex, lex->spname);
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	    /* Restore flag if it was cleared above */
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	    YYTHD->client_capabilities |= $<ulong_num>2;
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	    sp->restore_thd_mem_root(YYTHD);
	  }
	;

sp_a_chistics:
	  /* Empty */ {}
	| sp_a_chistics sp_chistic {}
	;

sp_c_chistics:
	  /* Empty */ {}
	| sp_c_chistics sp_c_chistic {}
	;

/* Characteristics for both create and alter */
sp_chistic:
	  COMMENT_SYM TEXT_STRING_sys
	  { Lex->sp_chistics.comment= $2; }
	| LANGUAGE_SYM SQL_SYM
	  { /* Just parse it, we only have one language for now. */ }
	| NO_SYM SQL_SYM
	  { Lex->sp_chistics.daccess= SP_NO_SQL; }
	| CONTAINS_SYM SQL_SYM
	  { Lex->sp_chistics.daccess= SP_CONTAINS_SQL; }
	| READS_SYM SQL_SYM DATA_SYM
	  { Lex->sp_chistics.daccess= SP_READS_SQL_DATA; }
	| MODIFIES_SYM SQL_SYM DATA_SYM
	  { Lex->sp_chistics.daccess= SP_MODIFIES_SQL_DATA; }
	| sp_suid
	  { }
	;

/* Create characteristics */
sp_c_chistic:
	  sp_chistic            { }
	| DETERMINISTIC_SYM     { Lex->sp_chistics.detistic= TRUE; }
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	| not DETERMINISTIC_SYM { Lex->sp_chistics.detistic= FALSE; }
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	;

sp_suid:
	  SQL_SYM SECURITY_SYM DEFINER_SYM
	  {
	    Lex->sp_chistics.suid= SP_IS_SUID;
	  }
	| SQL_SYM SECURITY_SYM INVOKER_SYM
	  {
	    Lex->sp_chistics.suid= SP_IS_NOT_SUID;
	  }
	;

call:
	  CALL_SYM sp_name
	  {
	    LEX *lex = Lex;

	    lex->sql_command= SQLCOM_CALL;
	    lex->spname= $2;
	    lex->value_list.empty();
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	    sp_add_used_routine(lex, YYTHD, $2, TYPE_ENUM_PROCEDURE);
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	  }
          '(' sp_cparam_list ')' {}
	;

/* CALL parameters */
sp_cparam_list:
	  /* Empty */
	| sp_cparams
	;

sp_cparams:
	  sp_cparams ',' expr
	  {
	    Lex->value_list.push_back($3);
	  }
	| expr
	  {
	    Lex->value_list.push_back($1);
	  }
	;

/* Stored FUNCTION parameter declaration list */
sp_fdparam_list:
	  /* Empty */
	| sp_fdparams
	;

sp_fdparams:
	  sp_fdparams ',' sp_fdparam
	| sp_fdparam
	;

sp_fdparam:
	  ident type
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$1, TRUE))
	    {
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	      my_error(ER_SP_DUP_PARAM, MYF(0), $1.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$1, (enum enum_field_types)$2, sp_param_in);
	  }
	;

/* Stored PROCEDURE parameter declaration list */
sp_pdparam_list:
	  /* Empty */
	| sp_pdparams
	;

sp_pdparams:
	  sp_pdparams ',' sp_pdparam
	| sp_pdparam
	;

sp_pdparam:
	  sp_opt_inout ident type
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$2, TRUE))
	    {
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	      my_error(ER_SP_DUP_PARAM, MYF(0), $2.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$2, (enum enum_field_types)$3,
			   (sp_param_mode_t)$1);
	  }
	;

sp_opt_inout:
	  /* Empty */ { $$= sp_param_in; }
	| IN_SYM      { $$= sp_param_in; }
	| OUT_SYM     { $$= sp_param_out; }
	| INOUT_SYM   { $$= sp_param_inout; }
	;

sp_proc_stmts:
	  /* Empty */ {}
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	| sp_proc_stmts  sp_proc_stmt ';'
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	;

sp_proc_stmts1:
	  sp_proc_stmt ';' {}
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	| sp_proc_stmts1  sp_proc_stmt ';'
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	;

sp_decls:
	  /* Empty */
	  {
	    $$.vars= $$.conds= $$.hndlrs= $$.curs= 0;
	  }
	| sp_decls sp_decl ';'
	  {
	    /* We check for declarations out of (standard) order this way
	       because letting the grammar rules reflect it caused tricky
	       shift/reduce conflicts with the wrong result. (And we get
	       better error handling this way.) */
	    if (($2.vars || $2.conds) && ($1.curs || $1.hndlrs))
	    { /* Variable or condition following cursor or handler */
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	      my_message(ER_SP_VARCOND_AFTER_CURSHNDLR,
                         ER(ER_SP_VARCOND_AFTER_CURSHNDLR), MYF(0));
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	      YYABORT;
	    }
	    if ($2.curs && $1.hndlrs)
	    { /* Cursor following handler */
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	      my_message(ER_SP_CURSOR_AFTER_HANDLER,
                         ER(ER_SP_CURSOR_AFTER_HANDLER), MYF(0));
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	      YYABORT;
	    }
	    $$.vars= $1.vars + $2.vars;
	    $$.conds= $1.conds + $2.conds;
	    $$.hndlrs= $1.hndlrs + $2.hndlrs;
	    $$.curs= $1.curs + $2.curs;
	  }
	;

sp_decl:
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          DECLARE_SYM sp_decl_idents type 
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          { Lex->sphead->reset_lex(YYTHD); }
          sp_opt_default
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          {
            LEX *lex= Lex;
            sp_pcontext *ctx= lex->spcont;
            uint max= ctx->context_pvars();
            enum enum_field_types type= (enum enum_field_types)$3;
            Item *it= $5;
            bool has_default= (it != NULL);
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            for (uint i = max-$2 ; i < max ; i++)
            {
              sp_instr_set *in;
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	      uint off= ctx->pvar_context2index(i);
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              ctx->set_type(off, type);
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              if (! has_default)
                it= new Item_null();  /* QQ Set to the type with null_value? */
              in = new sp_instr_set(lex->sphead->instructions(),
                                    ctx,
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                                    off,
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                                    it, type, lex,
                                    (i == max - 1));

              /*
                The last instruction is assigned to be responsible for
                freeing LEX.
              */
              lex->sphead->add_instr(in);
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              ctx->set_default(off, it);
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            }
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            lex->sphead->restore_lex(YYTHD);
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            $$.vars= $2;
            $$.conds= $$.hndlrs= $$.curs= 0;
          }
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	| DECLARE_SYM ident CONDITION_SYM FOR_SYM sp_cond
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_cond(&$2, TRUE))
	    {
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	      my_error(ER_SP_DUP_COND, MYF(0), $2.str);
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	      YYABORT;
	    }
	    YYTHD->lex->spcont->push_cond(&$2, $5);
	    $$.vars= $$.hndlrs= $$.curs= 0;
	    $$.conds= 1;
	  }
	| DECLARE_SYM sp_handler_type HANDLER_SYM FOR_SYM
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_instr_hpush_jump *i=
              new sp_instr_hpush_jump(sp->instructions(), ctx, $2,
	                              ctx->current_pvars());

	    sp->add_instr(i);
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
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	    sp->m_flags|= sp_head::IN_HANDLER;
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	  }
	  sp_hcond_list sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *hlab= lex->spcont->pop_label(); /* After this hdlr */
	    sp_instr_hreturn *i;

	    if ($2 == SP_HANDLER_CONTINUE)
	    {
	      i= new sp_instr_hreturn(sp->instructions(), ctx,
	                              ctx->current_pvars());
	      sp->add_instr(i);
	    }
	    else
	    {  /* EXIT or UNDO handler, just jump to the end of the block */
	      i= new sp_instr_hreturn(sp->instructions(), ctx, 0);

	      sp->add_instr(i);
	      sp->push_backpatch(i, lex->spcont->last_label()); /* Block end */
	    }
	    lex->sphead->backpatch(hlab);
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	    sp->m_flags&= ~sp_head::IN_HANDLER;
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	    $$.vars= $$.conds= $$.curs= 0;
	    $$.hndlrs= $6;
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	    ctx->add_handlers($6);
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	  }
	| DECLARE_SYM ident CURSOR_SYM FOR_SYM sp_cursor_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint offp;
	    sp_instr_cpush *i;

	    if (ctx->find_cursor(&$2, &offp, TRUE))
	    {
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	      my_error(ER_SP_DUP_CURS, MYF(0), $2.str);
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	      delete $5;
	      YYABORT;
	    }
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            i= new sp_instr_cpush(sp->instructions(), ctx, $5,
                                  ctx->current_cursors());
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	    sp->add_instr(i);
	    ctx->push_cursor(&$2);
	    $$.vars= $$.conds= $$.hndlrs= 0;
	    $$.curs= 1;
	  }
	;

sp_cursor_stmt:
	  {
	    Lex->sphead->reset_lex(YYTHD);

	    /* We use statement here just be able to get a better
	       error message. Using 'select' works too, but will then
	       result in a generic "syntax error" if a non-select
	       statement is given. */
	  }
	  statement
	  {
	    LEX *lex= Lex;

	    if (lex->sql_command != SQLCOM_SELECT)
	    {
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	      my_message(ER_SP_BAD_CURSOR_QUERY, ER(ER_SP_BAD_CURSOR_QUERY),
                         MYF(0));
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	      YYABORT;
	    }
	    if (lex->result)
	    {
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	      my_message(ER_SP_BAD_CURSOR_SELECT, ER(ER_SP_BAD_CURSOR_SELECT),
                         MYF(0));
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	      YYABORT;
	    }
	    lex->sp_lex_in_use= TRUE;
	    $$= lex;
	    lex->sphead->restore_lex(YYTHD);
	  }
	;

sp_handler_type:
	  EXIT_SYM      { $$= SP_HANDLER_EXIT; }
	| CONTINUE_SYM  { $$= SP_HANDLER_CONTINUE; }
/*	| UNDO_SYM      { QQ No yet } */
	;

sp_hcond_list:
	  sp_hcond
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
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	    sp_pcontext *ctx= lex->spcont;

	    if (ctx->find_handler($1))
	    {
	      my_message(ER_SP_DUP_HANDLER, ER(ER_SP_DUP_HANDLER), MYF(0));
	      YYABORT;
	    }
	    else
	    {
	      sp_instr_hpush_jump *i=
                (sp_instr_hpush_jump *)sp->last_instruction();
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	      i->add_condition($1);
	      ctx->push_handler($1);
	      $$= 1;
	    }
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	  }
	| sp_hcond_list ',' sp_hcond
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
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	    sp_pcontext *ctx= lex->spcont;

	    if (ctx->find_handler($3))
	    {
	      my_message(ER_SP_DUP_HANDLER, ER(ER_SP_DUP_HANDLER), MYF(0));
	      YYABORT;
	    }
	    else
	    {
	      sp_instr_hpush_jump *i=
	        (sp_instr_hpush_jump *)sp->last_instruction();
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	      i->add_condition($3);
	      ctx->push_handler($3);
	      $$= $1 + 1;
	    }
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	  }
	;

sp_cond:
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	  ulong_num
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	  {			/* mysql errno */
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::number;
	    $$->mysqlerr= $1;
	  }
	| SQLSTATE_SYM opt_value TEXT_STRING_literal
	  {		/* SQLSTATE */
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	    if (!sp_cond_check(&$3))
	    {
	      my_error(ER_SP_BAD_SQLSTATE, MYF(0), $3.str);
	      YYABORT;
	    }
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	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::state;
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	    memcpy($$->sqlstate, $3.str, 5);
	    $$->sqlstate[5]= '\0';
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	  }
	;

opt_value:
	  /* Empty */  {}
	| VALUE_SYM    {}
	;

sp_hcond:
	  sp_cond
	  {
	    $$= $1;
	  }
	| ident			/* CONDITION name */
	  {
	    $$= Lex->spcont->find_cond(&$1);
	    if ($$ == NULL)
	    {
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	      my_error(ER_SP_COND_MISMATCH, MYF(0), $1.str);
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	      YYABORT;
	    }
	  }
	| SQLWARNING_SYM	/* SQLSTATEs 01??? */
	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::warning;
	  }
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	| not FOUND_SYM		/* SQLSTATEs 02??? */
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	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::notfound;
	  }
	| SQLEXCEPTION_SYM	/* All other SQLSTATEs */
	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::exception;
	  }
	;

sp_decl_idents:
	  ident
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$1, TRUE))
	    {
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	      my_error(ER_SP_DUP_VAR, MYF(0), $1.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$1, (enum_field_types)0, sp_param_in);
	    $$= 1;
	  }
	| sp_decl_idents ',' ident
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_pvar(&$3, TRUE))
	    {
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	      my_error(ER_SP_DUP_VAR, MYF(0), $3.str);
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	      YYABORT;
	    }
	    spc->push_pvar(&$3, (enum_field_types)0, sp_param_in);
	    $$= $1 + 1;
	  }
	;

sp_opt_default:
	  /* Empty */ { $$ = NULL; }
        | DEFAULT expr { $$ = $2; }
	;

sp_proc_stmt:
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	  sp_proc_stmt_statement
        | sp_proc_stmt_return
	| sp_proc_stmt_if
	| sp_proc_stmt_case_simple
        | sp_proc_stmt_case
	| sp_labeled_control
	  {}
	| sp_proc_stmt_unlabeled
	| sp_proc_stmt_leave
	| sp_proc_stmt_iterate
	| sp_proc_stmt_label
	| sp_proc_stmt_goto
	| sp_proc_stmt_open
	| sp_proc_stmt_fetch
        | sp_proc_stmt_close
        ;

sp_proc_stmt_if:
        IF sp_if END IF {}
        ;
        
sp_proc_stmt_statement:
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	  {
	    LEX *lex= Lex;

	    lex->sphead->reset_lex(YYTHD);
	    lex->sphead->m_tmp_query= lex->tok_start;
	  }
	  statement
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

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            sp->m_flags|= sp_get_flags_for_command(lex);
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	    if (lex->sql_command == SQLCOM_CHANGE_DB)
	    { /* "USE db" doesn't work in a procedure */
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	      my_error(ER_SP_BADSTATEMENT, MYF(0), "USE");
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	      YYABORT;
	    }
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	    /*
              Don't add an instruction for SET statements, since all
              instructions for them were already added during processing
              of "set" rule.
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	    */
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            DBUG_ASSERT(lex->sql_command != SQLCOM_SET_OPTION ||
                        lex->var_list.is_empty());
            if (lex->sql_command != SQLCOM_SET_OPTION)
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	    {
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              sp_instr_stmt *i=new sp_instr_stmt(sp->instructions(),
                                                 lex->spcont, lex);
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              /* Extract the query statement from the tokenizer:
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                 The end is either lex->tok_end or tok->ptr. */
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              if (lex->ptr - lex->tok_end > 1)
                i->m_query.length= lex->ptr - sp->m_tmp_query;
              else
                i->m_query.length= lex->tok_end - sp->m_tmp_query;
              i->m_query.str= strmake_root(YYTHD->mem_root,
                                           (char *)sp->m_tmp_query,
                                           i->m_query.length);
              sp->add_instr(i);
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            }
	    sp->restore_lex(YYTHD);
          }
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        ;

sp_proc_stmt_return:
        RETURN_SYM 
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          { Lex->sphead->reset_lex(YYTHD); }
          expr
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	  {
	    LEX *lex= Lex;
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	    sp_head *sp= lex->sphead;
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	    if (sp->m_type == TYPE_ENUM_PROCEDURE)
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	    {
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	      my_message(ER_SP_BADRETURN, ER(ER_SP_BADRETURN), MYF(0));
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	      YYABORT;
	    }
	    else
	    {
	      sp_instr_freturn *i;

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	      i= new sp_instr_freturn(sp->instructions(), lex->spcont,
		                      $3, sp->m_returns, lex);
	      sp->add_instr(i);
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	      sp->m_flags|= sp_head::HAS_RETURN;
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	    }
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	    sp->restore_lex(YYTHD);
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	  }
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        ;

sp_proc_stmt_case_simple:
	CASE_SYM WHEN_SYM
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	  {
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	    Lex->sphead->m_flags&= ~sp_head::IN_SIMPLE_CASE;
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	  }
	  sp_case END CASE_SYM {}
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        ;
        
sp_proc_stmt_case:
          CASE_SYM
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          { Lex->sphead->reset_lex(YYTHD); }
          expr WHEN_SYM
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	  {
	    /* We "fake" this by using an anonymous variable which we
	       set to the expression. Note that all WHENs are evaluate
	       at the same frame level, so we then know that it's the
	       top-most variable in the frame. */
	    LEX *lex= Lex;
	    uint offset= lex->spcont->current_pvars();
	    sp_instr_set *i = new sp_instr_set(lex->sphead->instructions(),
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                                               lex->spcont, offset, $3,
                                               MYSQL_TYPE_STRING, lex, TRUE);
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	    LEX_STRING dummy={(char*)"", 0};
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	    lex->spcont->push_pvar(&dummy, MYSQL_TYPE_STRING, sp_param_in);
	    lex->sphead->add_instr(i);
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	    lex->sphead->m_flags|= sp_head::IN_SIMPLE_CASE;
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            lex->sphead->restore_lex(YYTHD);
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	  }
	  sp_case END CASE_SYM
	  {
	    Lex->spcont->pop_pvar();
	  }
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        ;

sp_proc_stmt_unlabeled:
	  { /* Unlabeled controls get a secret label. */
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	    LEX *lex= Lex;

	    lex->spcont->push_label((char *)"", lex->sphead->instructions());
	  }
	  sp_unlabeled_control
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
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        ;

sp_proc_stmt_leave:
	  LEAVE_SYM label_ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp = lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (! lab)
	    {
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	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "LEAVE", $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      uint ip= sp->instructions();
	      sp_instr_jump *i;
	      sp_instr_hpop *ih;
	      sp_instr_cpop *ic;

	      ih= new sp_instr_hpop(ip++, ctx, 0);
	      sp->push_backpatch(ih, lab);
	      sp->add_instr(ih);
	      ic= new sp_instr_cpop(ip++, ctx, 0);
	      sp->push_backpatch(ic, lab);
	      sp->add_instr(ic);
	      i= new sp_instr_jump(ip, ctx);
	      sp->push_backpatch(i, lab);  /* Jumping forward */
              sp->add_instr(i);
	    }
	  }
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        ;

sp_proc_stmt_iterate:
	  ITERATE_SYM label_ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (! lab || lab->type != SP_LAB_ITER)
	    {
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	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "ITERATE", $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      sp_instr_jump *i;
	      uint ip= sp->instructions();
	      uint n;

	      n= ctx->diff_handlers(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_hpop(ip++, ctx, n));
	      n= ctx->diff_cursors(lab->ctx);
	      if (n)
	        sp->add_instr(new sp_instr_cpop(ip++, ctx, n));
	      i= new sp_instr_jump(ip, ctx, lab->ip); /* Jump back */
              sp->add_instr(i);
	    }
	  }
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        ;

sp_proc_stmt_label:
	  LABEL_SYM IDENT
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	  {
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#ifdef SP_GOTO
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (lab)
	    {
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	      my_error(ER_SP_LABEL_REDEFINE, MYF(0), $2.str);
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	      YYABORT;
	    }
	    else
	    {
	      lab= ctx->push_label($2.str, sp->instructions());
	      lab->type= SP_LAB_GOTO;
	      lab->ctx= ctx;
              sp->backpatch(lab);
	    }
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#else
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
#endif
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	  }
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        ;

sp_proc_stmt_goto:
	  GOTO_SYM IDENT
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	  {
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#ifdef SP_GOTO
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab;
	    sp_instr_jump *i;
	    sp_instr_hpop *ih;
	    sp_instr_cpop *ic;

	    if (sp->m_in_handler)
	    {
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	      my_message(ER_SP_GOTO_IN_HNDLR, ER(ER_SP_GOTO_IN_HNDLR), MYF(0));
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	      YYABORT;
	    }
	    lab= ctx->find_label($2.str);
	    if (! lab)
	    {
	      lab= (sp_label_t *)YYTHD->alloc(sizeof(sp_label_t));
	      lab->name= $2.str;
	      lab->ip= 0;
	      lab->type= SP_LAB_REF;
	      lab->ctx= ctx;

	      ih= new sp_instr_hpop(ip++, ctx, 0);
	      sp->push_backpatch(ih, lab);
	      sp->add_instr(ih);
	      ic= new sp_instr_cpop(ip++, ctx, 0);
	      sp->add_instr(ic);
	      sp->push_backpatch(ic, lab);
	      i= new sp_instr_jump(ip, ctx);
	      sp->push_backpatch(i, lab);  /* Jumping forward */
	      sp->add_instr(i);
	    }
	    else
	    {
	      uint n;

	      n= ctx->diff_handlers(lab->ctx);
	      if (n)
	      {
	        ih= new sp_instr_hpop(ip++, ctx, n);
	        sp->add_instr(ih);
	      }
	      n= ctx->diff_cursors(lab->ctx);
	      if (n)
	      {
	        ic= new sp_instr_cpop(ip++, ctx, n);
	        sp->add_instr(ic);
	      }
	      i= new sp_instr_jump(ip, ctx, lab->ip); /* Jump back */
	      sp->add_instr(i);
	    }
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#else
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
#endif
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	  }
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        ;

sp_proc_stmt_open:
	  OPEN_SYM ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_copen *i;

	    if (! lex->spcont->find_cursor(&$2, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
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	      YYABORT;
	    }
	    i= new sp_instr_copen(sp->instructions(), lex->spcont, offset);
	    sp->add_instr(i);
	  }
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        ;

sp_proc_stmt_fetch:
	  FETCH_SYM sp_opt_fetch_noise ident INTO
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_cfetch *i;

	    if (! lex->spcont->find_cursor(&$3, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $3.str);
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	      YYABORT;
	    }
	    i= new sp_instr_cfetch(sp->instructions(), lex->spcont, offset);
	    sp->add_instr(i);
	  }
	  sp_fetch_list
	  { }
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        ;

sp_proc_stmt_close:
	  CLOSE_SYM ident
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_cclose *i;

	    if (! lex->spcont->find_cursor(&$2, &offset))
	    {
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	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
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	      YYABORT;
	    }
	    i= new sp_instr_cclose(sp->instructions(), lex->spcont,  offset);
	    sp->add_instr(i);
	  }
	;

sp_opt_fetch_noise:
	  /* Empty */
	| NEXT_SYM FROM
	| FROM
	;

sp_fetch_list:
	  ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *spc= lex->spcont;
	    sp_pvar_t *spv;

	    if (!spc || !(spv = spc->find_pvar(&$1)))
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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	      YYABORT;
	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	    }
	  }
	|
	  sp_fetch_list ',' ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *spc= lex->spcont;
	    sp_pvar_t *spv;

	    if (!spc || !(spv = spc->find_pvar(&$3)))
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $3.str);
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	      YYABORT;
	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	    }
	  }
	;

sp_if:
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          { Lex->sphead->reset_lex(YYTHD); }
          expr THEN_SYM
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	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint ip= sp->instructions();
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	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, ctx,
                                                               $2, lex);
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	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
            sp->add_instr(i);
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            sp->restore_lex(YYTHD);
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	  }
	  sp_proc_stmts1
	  {
	    sp_head *sp= Lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump *i = new sp_instr_jump(ip, ctx);

	    sp->add_instr(i);
	    sp->backpatch(ctx->pop_label());
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	  }
	  sp_elseifs
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	;

sp_elseifs:
	  /* Empty */
	| ELSEIF_SYM sp_if
	| ELSE sp_proc_stmts1
	;

sp_case:
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	  { Lex->sphead->reset_lex(YYTHD); }
          expr THEN_SYM
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	  {
            LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i;

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	    if (! (sp->m_flags & sp_head::IN_SIMPLE_CASE))
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	      i= new sp_instr_jump_if_not(ip, ctx, $2, lex);
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	    else
	    { /* Simple case: <caseval> = <whenval> */
	      LEX_STRING ivar;

	      ivar.str= (char *)"_tmp_";
	      ivar.length= 5;
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	      Item_splocal *var= new Item_splocal(ivar,
                                                  ctx->current_pvars()-1);
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#ifndef DBUG_OFF
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              if (var)
                var->owner= sp;
#endif
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	      Item *expr= new Item_func_eq(var, $2);
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	      i= new sp_instr_jump_if_not(ip, ctx, expr, lex);
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              lex->variables_used= 1;
	    }
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
            sp->add_instr(i);
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            sp->restore_lex(YYTHD);
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	  }
	  sp_proc_stmts1
	  {
	    sp_head *sp= Lex->sphead;
	    sp_pcontext *ctx= Lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump *i = new sp_instr_jump(ip, ctx);

	    sp->add_instr(i);
	    sp->backpatch(ctx->pop_label());
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	  }
	  sp_whens
	  {
	    LEX *lex= Lex;

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	;
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sp_whens:
	  /* Empty */
	  {
	    sp_head *sp= Lex->sphead;
	    uint ip= sp->instructions();
	    sp_instr_error *i= new sp_instr_error(ip, Lex->spcont,
						  ER_SP_CASE_NOT_FOUND);
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	    sp->add_instr(i);
	  }
	| ELSE sp_proc_stmts1 {}
	| WHEN_SYM sp_case {}
	;
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sp_labeled_control:
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	  label_ident ':'
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	  {
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	    LEX *lex= Lex;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($1.str);

	    if (lab)
	    {
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	      my_error(ER_SP_LABEL_REDEFINE, MYF(0), $1.str);
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	      YYABORT;
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	    }
	    else
	    {
	      lab= lex->spcont->push_label($1.str,
	                                   lex->sphead->instructions());
	      lab->type= SP_LAB_ITER;
	    }
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	  }
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	  sp_unlabeled_control sp_opt_label
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	  {
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	    LEX *lex= Lex;
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	    if ($5.str)
	    {
	      sp_label_t *lab= lex->spcont->find_label($5.str);

	      if (!lab ||
	          my_strcasecmp(system_charset_info, $5.str, lab->name) != 0)
	      {
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	        my_error(ER_SP_LABEL_MISMATCH, MYF(0), $5.str);
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	        YYABORT;
	      }
	    }
	    lex->sphead->backpatch(lex->spcont->pop_label());
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	  }
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	;

sp_opt_label:
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        /* Empty  */    { $$= null_lex_str; }
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        | label_ident   { $$= $1; }
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	;

sp_unlabeled_control:
	  BEGIN_SYM
	  { /* QQ This is just a dummy for grouping declarations and statements
	       together. No [[NOT] ATOMIC] yet, and we need to figure out how
	       make it coexist with the existing BEGIN COMMIT/ROLLBACK. */
	    LEX *lex= Lex;
	    sp_label_t *lab= lex->spcont->last_label();

	    lab->type= SP_LAB_BEGIN;
	    lex->spcont= lex->spcont->push_context();
	  }
	  sp_decls
	  sp_proc_stmts
	  END
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	  {
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;

  	    sp->backpatch(ctx->last_label());	/* We always have a label */
	    if ($3.hndlrs)
	      sp->add_instr(new sp_instr_hpop(sp->instructions(), ctx,
					      $3.hndlrs));
	    if ($3.curs)
	      sp->add_instr(new sp_instr_cpop(sp->instructions(), ctx,
					      $3.curs));
	    lex->spcont= ctx->pop_context();
	  }
	| LOOP_SYM
	  sp_proc_stmts1 END LOOP_SYM
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	  {
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	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump *i = new sp_instr_jump(ip, lex->spcont, lab->ip);

	    lex->sphead->add_instr(i);
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	  }
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        | WHILE_SYM 
          { Lex->sphead->reset_lex(YYTHD); }
          expr DO_SYM
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	  {
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	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, lex->spcont,
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							       $3, lex);
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	    /* Jumping forward */
	    sp->push_backpatch(i, lex->spcont->last_label());
            sp->add_instr(i);
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            sp->restore_lex(YYTHD);
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	  }
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	  sp_proc_stmts1 END WHILE_SYM
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	  {
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	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump *i = new sp_instr_jump(ip, lex->spcont, lab->ip);

	    lex->sphead->add_instr(i);
	  }
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        | REPEAT_SYM sp_proc_stmts1 UNTIL_SYM 
          { Lex->sphead->reset_lex(YYTHD); }
          expr END REPEAT_SYM
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	  {
	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, lex->spcont,
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                                                               $5, lab->ip,
                                                               lex);
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            lex->sphead->add_instr(i);
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            lex->sphead->restore_lex(YYTHD);
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	  }
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	;

trg_action_time:
            BEFORE_SYM 
            { Lex->trg_chistics.action_time= TRG_ACTION_BEFORE; }
          | AFTER_SYM 
            { Lex->trg_chistics.action_time= TRG_ACTION_AFTER; }
          ;

trg_event:
            INSERT 
            { Lex->trg_chistics.event= TRG_EVENT_INSERT; }
          | UPDATE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_UPDATE; }
          | DELETE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_DELETE; }
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          ;
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create2:
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        '(' create2a {}
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        | opt_create_table_options
          opt_partitioning {} 
          create3 {}
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        | LIKE table_ident
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$2))
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              YYABORT;
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          }
        | '(' LIKE table_ident ')'
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$3))
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              YYABORT;
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          }
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        ;
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create2a:
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        field_list ')' opt_create_table_options
          opt_partitioning {}
          create3 {}
        |  opt_partitioning {}
           create_select ')'
           { Select->set_braces(1);} union_opt {}
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        ;
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create3:
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	/* empty */ {}
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	| opt_duplicate opt_as     create_select
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          { Select->set_braces(0);} union_clause {}
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	| opt_duplicate opt_as '(' create_select ')'
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          { Select->set_braces(1);} union_opt {}
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        ;

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/*
 This part of the parser is about handling of the partition information.

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 It's first version was written by Mikael Ronström with lots of answers to
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 questions provided by Antony Curtis.

 The partition grammar can be called from three places.
 1) CREATE TABLE ... PARTITION ..
 2) ALTER TABLE table_name PARTITION ...
 3) PARTITION ...

 The first place is called when a new table is created from a MySQL client.
 The second place is called when a table is altered with the ALTER TABLE
 command from a MySQL client.
 The third place is called when opening an frm file and finding partition
 info in the .frm file. It is necessary to avoid allowing PARTITION to be
 an allowed entry point for SQL client queries. This is arranged by setting
 some state variables before arriving here.

 To be able to handle errors we will only set error code in this code
 and handle the error condition in the function calling the parser. This
 is necessary to ensure we can also handle errors when calling the parser
 from the openfrm function.
*/
opt_partitioning:
        /* empty */ {}
        | partitioning
        ;

partitioning:
        PARTITION_SYM
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        {
          LEX *lex= Lex;
          lex->part_info= new partition_info();
          if (!lex->part_info)
          {
            my_error(ER_OUTOFMEMORY, MYF(0), sizeof(partition_info));
            YYABORT;
          }
        }
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        partition
        ;

partition_entry:
        PARTITION_SYM
        {
          LEX *lex= Lex;
          if (lex->part_info)
          {
            /*
              We enter here when opening the frm file to translate
              partition info string into part_info data structure.
            */
            lex->part_info= new partition_info();
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            if (!lex->part_info)
            {
              my_error(ER_OUTOFMEMORY, MYF(0), sizeof(partition_info));
              YYABORT;
            }
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          }
          else
          {
            yyerror(ER(ER_PARTITION_ENTRY_ERROR));
            YYABORT;
          }
        }
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        partition {}
        ;
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partition:
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        BY part_type_def opt_no_parts {} opt_sub_part {} part_defs
        ;
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part_type_def:
        opt_linear KEY_SYM '(' part_field_list ')'
        {
          LEX *lex= Lex;
          lex->part_info->list_of_part_fields= TRUE;
          lex->part_info->part_type= HASH_PARTITION;
        }
        | opt_linear HASH_SYM
        { Lex->part_info->part_type= HASH_PARTITION; }
        part_func {}
        | RANGE_SYM
        { Lex->part_info->part_type= RANGE_PARTITION; }
        part_func {}
        | LIST_SYM
        { Lex->part_info->part_type= LIST_PARTITION; }
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        part_func {}
        ;
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opt_linear:
        /* empty */ {}
        | LINEAR_SYM
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        { Lex->part_info->linear_hash_ind= TRUE;}
        ;
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part_field_list:
        part_field_item {}
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        | part_field_list ',' part_field_item {}
        ;
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part_field_item:
        ident
        {
          Lex->part_info->part_field_list.push_back($1.str);
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        }
        ;
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part_func:
        '(' remember_name part_func_expr remember_end ')'
        {
          LEX *lex= Lex;
          uint expr_len= (uint)($4 - $2) - 1;
          lex->part_info->list_of_part_fields= FALSE;
          lex->part_info->part_expr= $3;
          lex->part_info->part_func_string= $2+1;
          lex->part_info->part_func_len= expr_len;
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        }
        ;
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sub_part_func:
        '(' remember_name part_func_expr remember_end ')'
        {
          LEX *lex= Lex;
          uint expr_len= (uint)($4 - $2) - 1;
          lex->part_info->list_of_subpart_fields= FALSE;
          lex->part_info->subpart_expr= $3;
          lex->part_info->subpart_func_string= $2+1;
          lex->part_info->subpart_func_len= expr_len;
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        }
        ;
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opt_no_parts:
        /* empty */ {}
        | PARTITIONS_SYM ulong_num 
        { 
          uint no_parts= $2;
          if (no_parts == 0)
          {
            my_error(ER_NO_PARTS_ERROR, MYF(0), "partitions");
            YYABORT;
          }
          Lex->part_info->no_parts= no_parts;
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        }
        ;
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opt_sub_part:
        /* empty */ {}
        | SUBPARTITION_SYM BY opt_linear HASH_SYM sub_part_func
        { Lex->part_info->subpart_type= HASH_PARTITION; }
        opt_no_subparts {}
        | SUBPARTITION_SYM BY opt_linear KEY_SYM
          '(' sub_part_field_list ')'
        {
          LEX *lex= Lex;
          lex->part_info->subpart_type= HASH_PARTITION;
          lex->part_info->list_of_subpart_fields= TRUE;
        }
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        opt_no_subparts {}
        ;
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sub_part_field_list:
        sub_part_field_item {}
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        | sub_part_field_list ',' sub_part_field_item {}
        ;
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sub_part_field_item:
        ident
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        { Lex->part_info->subpart_field_list.push_back($1.str); }
        ;
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part_func_expr:
        bit_expr
        {
          LEX *lex= Lex;
          bool not_corr_func;
          not_corr_func= !lex->safe_to_cache_query;
          lex->safe_to_cache_query= 1;
          if (not_corr_func)
          {
            yyerror(ER(ER_CONST_EXPR_IN_PARTITION_FUNC_ERROR));
            YYABORT;
          }
          $$=$1;
        }
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        ;
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opt_no_subparts:
        /* empty */ {}
        | SUBPARTITIONS_SYM ulong_num
        {
          uint no_parts= $2;
          if (no_parts == 0)
          {
            my_error(ER_NO_PARTS_ERROR, MYF(0), "subpartitions");
            YYABORT;
          }
          Lex->part_info->no_subparts= no_parts;
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        }
        ;
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part_defs:
        /* empty */
        {}
        | '(' part_def_list ')'
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          if (part_info->no_parts != 0)
          {
            if (part_info->no_parts !=
                part_info->count_curr_parts)
            {
              yyerror(ER(ER_PARTITION_WRONG_NO_PART_ERROR));
              YYABORT;
            }
          }
          else if (part_info->count_curr_parts > 0)
          {
            part_info->no_parts= part_info->count_curr_parts;
          }
          part_info->count_curr_subparts= 0;
          part_info->count_curr_parts= 0;
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        }
        ;
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part_def_list:
        part_definition {}
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        | part_def_list ',' part_definition {}
        ;
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part_definition:
        PARTITION_SYM
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          partition_element *p_elem= new partition_element();
          if (!p_elem)
          {
            my_error(ER_OUTOFMEMORY, MYF(0), sizeof(partition_element));
            YYABORT;
          }
          part_info->curr_part_elem= p_elem;
          part_info->current_partition= p_elem;
          part_info->use_default_partitions= FALSE;
          part_info->partitions.push_back(p_elem);
          p_elem->engine_type= DB_TYPE_UNKNOWN;
          part_info->count_curr_parts++;
        }
        part_name {}
        opt_part_values {}
        opt_part_options {}
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        opt_sub_partition {}
        ;
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part_name:
        ident_or_text
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        { Lex->part_info->curr_part_elem->partition_name= $1.str; }
        ;
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opt_part_values:
        /* empty */
        {
          LEX *lex= Lex;
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          if (!is_partition_management(lex))
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          {
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            if (lex->part_info->part_type == RANGE_PARTITION)
            {
              my_error(ER_PARTITION_REQUIRES_VALUES_ERROR, MYF(0),
              "RANGE", "LESS THAN");
              YYABORT;
            }
            if (lex->part_info->part_type == LIST_PARTITION)
            {
              my_error(ER_PARTITION_REQUIRES_VALUES_ERROR, MYF(0),
              "LIST", "IN");
              YYABORT;
            }
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          }
        }
        | VALUES LESS_SYM THAN_SYM part_func_max
        {
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          LEX *lex= Lex;
          if (!is_partition_management(lex))
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          {
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            if (Lex->part_info->part_type != RANGE_PARTITION)
            {
              my_error(ER_PARTITION_WRONG_VALUES_ERROR, MYF(0),
              "RANGE", "LESS THAN");
              YYABORT;
            }
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          }
        }
        | VALUES IN_SYM '(' part_list_func ')'
        {
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          LEX *lex= Lex;
          if (!is_partition_management(lex))
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          {
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            if (Lex->part_info->part_type != LIST_PARTITION)
            {
              my_error(ER_PARTITION_WRONG_VALUES_ERROR, MYF(0),
              "LIST", "IN");
              YYABORT;
            }
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          }
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        }
        ;
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part_func_max:
        MAX_VALUE_SYM
        {
          LEX *lex= Lex;
          if (lex->part_info->defined_max_value)
          {
            yyerror(ER(ER_PARTITION_MAXVALUE_ERROR));
            YYABORT;
          }
          lex->part_info->defined_max_value= TRUE;
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          lex->part_info->curr_part_elem->range_value= LONGLONG_MAX;
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        }
        | part_range_func
        {
          if (Lex->part_info->defined_max_value)
          {
            yyerror(ER(ER_PARTITION_MAXVALUE_ERROR));
            YYABORT;
          }
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        }
        ;
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part_range_func:
        '(' part_bit_expr ')' 
        {
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          Lex->part_info->curr_part_elem->range_value= $2;
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        }
        ;
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part_list_func:
        part_list_item {}
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        | part_list_func ',' part_list_item {}
        ;
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part_list_item:
        part_bit_expr
        {
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          longlong *value_ptr;
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          if (!(value_ptr= (longlong*)sql_alloc(sizeof(longlong))))
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          {
            my_error(ER_OUTOFMEMORY, MYF(0), sizeof(longlong));
            YYABORT;
          }
          *value_ptr= $1;
          Lex->part_info->curr_part_elem->list_val_list.push_back(value_ptr);
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        }
        ;
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part_bit_expr:
        bit_expr
        {
          Item *part_expr= $1;
          bool not_corr_func;
          LEX *lex= Lex;
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          longlong item_value;
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          Name_resolution_context *context= &lex->current_select->context;
          TABLE_LIST *save_list= context->table_list;

          context->table_list= 0;
          part_expr->fix_fields(YYTHD, (Item**)0);
          context->table_list= save_list;
          not_corr_func= !part_expr->const_item() ||
                         !lex->safe_to_cache_query;
          if (not_corr_func)
          {
            yyerror(ER(ER_NO_CONST_EXPR_IN_RANGE_OR_LIST_ERROR));
            YYABORT;
          }
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          if (part_expr->result_type() != INT_RESULT)
          {
            yyerror(ER(ER_INCONSISTENT_TYPE_OF_FUNCTIONS_ERROR));
            YYABORT;
          }
          item_value= part_expr->val_int();
          $$= item_value; 
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        }
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        ;
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opt_sub_partition:
        /* empty */ {}
        | '(' sub_part_list ')'
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          if (part_info->no_subparts != 0)
          {
            if (part_info->no_subparts !=
                part_info->count_curr_subparts)
            {
              yyerror(ER(ER_PARTITION_WRONG_NO_SUBPART_ERROR));
              YYABORT;
            }
          }
          else if (part_info->count_curr_subparts > 0)
          {
            part_info->no_subparts= part_info->count_curr_subparts;
          }
          part_info->count_curr_subparts= 0;
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        }
        ;
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sub_part_list:
        sub_part_definition {}
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        | sub_part_list ',' sub_part_definition {}
        ;
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sub_part_definition:
        SUBPARTITION_SYM
        {
          LEX *lex= Lex;
          partition_info *part_info= lex->part_info;
          partition_element *p_elem= new partition_element();
          if (!p_elem)
          {
            my_error(ER_OUTOFMEMORY, MYF(0), sizeof(partition_element));
            YYABORT;
          }
          part_info->curr_part_elem= p_elem;
          part_info->current_partition->subpartitions.push_back(p_elem);
          part_info->use_default_subpartitions= FALSE;
          part_info->count_curr_subparts++;
          p_elem->engine_type= DB_TYPE_UNKNOWN;
        }
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        sub_name opt_part_options {}
        ;
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sub_name:
        ident_or_text
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        { Lex->part_info->curr_part_elem->partition_name= $1.str; }
        ;
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opt_part_options:
       /* empty */ {}
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       | opt_part_option_list {}
       ;
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opt_part_option_list:
       opt_part_option_list opt_part_option {}
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       | opt_part_option {}
       ;
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opt_part_option:
        TABLESPACE opt_equal ident_or_text
        { Lex->part_info->curr_part_elem->tablespace_name= $3.str; }
        | opt_storage ENGINE_SYM opt_equal storage_engines
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        {
          LEX *lex= Lex;
          lex->part_info->curr_part_elem->engine_type= $4;
          lex->part_info->default_engine_type= $4;
        }
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        | NODEGROUP_SYM opt_equal ulong_num
        { Lex->part_info->curr_part_elem->nodegroup_id= $3; }
        | MAX_ROWS opt_equal ulonglong_num
        { Lex->part_info->curr_part_elem->part_max_rows= $3; }
        | MIN_ROWS opt_equal ulonglong_num
        { Lex->part_info->curr_part_elem->part_min_rows= $3; }
        | DATA_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys
        { Lex->part_info->curr_part_elem->data_file_name= $4.str; }
        | INDEX_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys
        { Lex->part_info->curr_part_elem->index_file_name= $4.str; }
        | COMMENT_SYM opt_equal TEXT_STRING_sys
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        { Lex->part_info->curr_part_elem->part_comment= $3.str; }
        ;
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/*
 End of partition parser part
*/

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create_select:
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          SELECT_SYM
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          {
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	    LEX *lex=Lex;
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	    lex->lock_option= using_update_log ? TL_READ_NO_INSERT : TL_READ;
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	    if (lex->sql_command == SQLCOM_INSERT)
	      lex->sql_command= SQLCOM_INSERT_SELECT;
	    else if (lex->sql_command == SQLCOM_REPLACE)
	      lex->sql_command= SQLCOM_REPLACE_SELECT;
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	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
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	    lex->current_select->table_list.save_and_clear(&lex->save_list);
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	    mysql_init_select(lex);
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	    lex->current_select->parsing_place= SELECT_LIST;
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          }
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          select_options select_item_list
	  {
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	    Select->parsing_place= NO_MATTER;
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	  }
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	  opt_select_from
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	  {
	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
	    Lex->current_select->table_list.push_front(&Lex->save_list);
	  }
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        ;
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opt_as:
	/* empty */ {}
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	| AS	    {};
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opt_create_database_options:
	/* empty */			{}
	| create_database_options	{};

create_database_options:
	create_database_option					{}
	| create_database_options create_database_option	{};

create_database_option:
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	default_collation   {}
	| default_charset   {};
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opt_table_options:
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	/* empty */	 { $$= 0; }
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	| table_options  { $$= $1;};
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table_options:
	table_option	{ $$=$1; }
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	| table_option table_options { $$= $1 | $2; };
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table_option:
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	TEMPORARY	{ $$=HA_LEX_CREATE_TMP_TABLE; };
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opt_if_not_exists:
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	/* empty */	 { $$= 0; }
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	| IF not EXISTS	 { $$=HA_LEX_CREATE_IF_NOT_EXISTS; };
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opt_create_table_options:
	/* empty */
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	| create_table_options;
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create_table_options_space_separated:
	create_table_option
	| create_table_option create_table_options_space_separated;

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create_table_options:
	create_table_option
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	| create_table_option     create_table_options
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	| create_table_option ',' create_table_options;
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create_table_option:
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	ENGINE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE; }
	| TYPE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; WARN_DEPRECATED("TYPE=storage_engine","ENGINE=storage_engine");   Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE; }
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	| MAX_ROWS opt_equal ulonglong_num	{ Lex->create_info.max_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MAX_ROWS;}
	| MIN_ROWS opt_equal ulonglong_num	{ Lex->create_info.min_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MIN_ROWS;}
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	| AVG_ROW_LENGTH opt_equal ulong_num	{ Lex->create_info.avg_row_length=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AVG_ROW_LENGTH;}
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	| PASSWORD opt_equal TEXT_STRING_sys	{ Lex->create_info.password=$3.str; Lex->create_info.used_fields|= HA_CREATE_USED_PASSWORD; }
	| COMMENT_SYM opt_equal TEXT_STRING_sys	{ Lex->create_info.comment=$3.str; Lex->create_info.used_fields|= HA_CREATE_USED_COMMENT; }
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	| AUTO_INC opt_equal ulonglong_num	{ Lex->create_info.auto_increment_value=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AUTO;}
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        | PACK_KEYS_SYM opt_equal ulong_num
          {
            switch($3) {
            case 0:
                Lex->create_info.table_options|= HA_OPTION_NO_PACK_KEYS;
                break;
            case 1:
                Lex->create_info.table_options|= HA_OPTION_PACK_KEYS;
                break;
            default:
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
            }
            Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;
          }
        | PACK_KEYS_SYM opt_equal DEFAULT
          {
            Lex->create_info.table_options&=
              ~(HA_OPTION_PACK_KEYS | HA_OPTION_NO_PACK_KEYS);
            Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;
          }
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	| CHECKSUM_SYM opt_equal ulong_num	{ Lex->create_info.table_options|= $3 ? HA_OPTION_CHECKSUM : HA_OPTION_NO_CHECKSUM; Lex->create_info.used_fields|= HA_CREATE_USED_CHECKSUM; }
	| DELAY_KEY_WRITE_SYM opt_equal ulong_num { Lex->create_info.table_options|= $3 ? HA_OPTION_DELAY_KEY_WRITE : HA_OPTION_NO_DELAY_KEY_WRITE;  Lex->create_info.used_fields|= HA_CREATE_USED_DELAY_KEY_WRITE; }
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	| ROW_FORMAT_SYM opt_equal row_types	{ Lex->create_info.row_type= $3;  Lex->create_info.used_fields|= HA_CREATE_USED_ROW_FORMAT; }
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	| RAID_TYPE opt_equal raid_types
	  {
	    my_error(ER_WARN_DEPRECATED_SYNTAX, MYF(0), "RAID_TYPE", "PARTITION");
	    YYABORT;
	  }
	| RAID_CHUNKS opt_equal ulong_num
	  {
	    my_error(ER_WARN_DEPRECATED_SYNTAX, MYF(0), "RAID_CHUNKS", "PARTITION");
	    YYABORT;
	  }
	| RAID_CHUNKSIZE opt_equal ulong_num
	  {
	    my_error(ER_WARN_DEPRECATED_SYNTAX, MYF(0), "RAID_CHUNKSIZE", "PARTITION");
	    YYABORT;
	  }
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	| UNION_SYM opt_equal '(' table_list ')'
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	  {
	    /* Move the union list to the merge_list */
	    LEX *lex=Lex;
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	    TABLE_LIST *table_list= lex->select_lex.get_table_list();
	    lex->create_info.merge_list= lex->select_lex.table_list;
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	    lex->create_info.merge_list.elements--;
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	    lex->create_info.merge_list.first=
	      (byte*) (table_list->next_local);
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	    lex->select_lex.table_list.elements=1;
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	    lex->select_lex.table_list.next=
	      (byte**) &(table_list->next_local);
	    table_list->next_local= 0;
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	    lex->create_info.used_fields|= HA_CREATE_USED_UNION;
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	  }
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	| default_charset
	| default_collation
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	| INSERT_METHOD opt_equal merge_insert_types   { Lex->create_info.merge_insert_method= $3; Lex->create_info.used_fields|= HA_CREATE_USED_INSERT_METHOD;}
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	| DATA_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.data_file_name= $4.str; Lex->create_info.used_fields|= HA_CREATE_USED_DATADIR; }
	| INDEX_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.index_file_name= $4.str;  Lex->create_info.used_fields|= HA_CREATE_USED_INDEXDIR; }
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	| CONNECTION_SYM opt_equal TEXT_STRING_sys { Lex->create_info.connect_string.str= $3.str; Lex->create_info.connect_string.length= $3.length;  Lex->create_info.used_fields|= HA_CREATE_USED_CONNECTION; }
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        ;
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default_charset:
        opt_default charset opt_equal charset_name_or_default
        {
          HA_CREATE_INFO *cinfo= &Lex->create_info;
          if ((cinfo->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) &&
               cinfo->default_table_charset && $4 &&
               !my_charset_same(cinfo->default_table_charset,$4))
          {
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            my_error(ER_CONFLICTING_DECLARATIONS, MYF(0),
                     "CHARACTER SET ", cinfo->default_table_charset->csname,
                     "CHARACTER SET ", $4->csname);
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            YYABORT;
          }
	  Lex->create_info.default_table_charset= $4;
          Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

default_collation:
        opt_default COLLATE_SYM opt_equal collation_name_or_default
        {
          HA_CREATE_INFO *cinfo= &Lex->create_info;
          if ((cinfo->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) &&
               cinfo->default_table_charset && $4 &&
               !my_charset_same(cinfo->default_table_charset,$4))
            {
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              my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $4->name, cinfo->default_table_charset->csname);
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              YYABORT;
            }
            Lex->create_info.default_table_charset= $4;
            Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

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storage_engines:
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	ident_or_text
	{
	  $$ = ha_resolve_by_name($1.str,$1.length);
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	  if ($$ == DB_TYPE_UNKNOWN &&
	      test(YYTHD->variables.sql_mode & MODE_NO_ENGINE_SUBSTITUTION))
	  {
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	    my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), $1.str);
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	    YYABORT;
	  }
	};
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row_types:
	DEFAULT		{ $$= ROW_TYPE_DEFAULT; }
	| FIXED_SYM	{ $$= ROW_TYPE_FIXED; }
	| DYNAMIC_SYM	{ $$= ROW_TYPE_DYNAMIC; }
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	| COMPRESSED_SYM { $$= ROW_TYPE_COMPRESSED; }
	| REDUNDANT_SYM	{ $$= ROW_TYPE_REDUNDANT; }
	| COMPACT_SYM	{ $$= ROW_TYPE_COMPACT; };
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raid_types:
	RAID_STRIPED_SYM { $$= RAID_TYPE_0; }
	| RAID_0_SYM	 { $$= RAID_TYPE_0; }
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	| ulong_num	 { $$=$1;};
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merge_insert_types:
       NO_SYM            { $$= MERGE_INSERT_DISABLED; }
       | FIRST_SYM       { $$= MERGE_INSERT_TO_FIRST; }
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       | LAST_SYM        { $$= MERGE_INSERT_TO_LAST; };
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opt_select_from:
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	opt_limit_clause {}
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	| select_from select_lock_type;
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udf_func_type:
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	/* empty */	{ $$ = UDFTYPE_FUNCTION; }
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	| AGGREGATE_SYM { $$ = UDFTYPE_AGGREGATE; };
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udf_type:
	STRING_SYM {$$ = (int) STRING_RESULT; }
	| REAL {$$ = (int) REAL_RESULT; }
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        | DECIMAL_SYM {$$ = (int) DECIMAL_RESULT; }
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	| INT_SYM {$$ = (int) INT_RESULT; };
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field_list:
	  field_list_item
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	| field_list ',' field_list_item;
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field_list_item:
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	   column_def
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         | key_def
         ;

column_def:
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	  field_spec opt_check_constraint
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	| field_spec references
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	;
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key_def:
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	key_type opt_ident key_alg '(' key_list ')' opt_fulltext_parser
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	  {
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	    LEX *lex=Lex;
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	    if ($1 != Key::FULLTEXT && $7)
	    {
	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
	    lex->key_list.push_back(new Key($1,$2, $3, 0, lex->col_list, $7));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| opt_constraint constraint_key_type opt_ident key_alg '(' key_list ')'
	  {
	    LEX *lex=Lex;
	    const char *key_name= $3 ? $3:$1;
3560 3561
	    lex->key_list.push_back(new Key($2, key_name, $4, 0,
				    lex->col_list));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
3564
	| opt_constraint FOREIGN KEY_SYM opt_ident '(' key_list ')' references
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	  {
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	    LEX *lex=Lex;
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	    lex->key_list.push_back(new foreign_key($4 ? $4:$1, lex->col_list,
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				    $8,
				    lex->ref_list,
				    lex->fk_delete_opt,
				    lex->fk_update_opt,
				    lex->fk_match_option));
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	    lex->key_list.push_back(new Key(Key::MULTIPLE, $4 ? $4 : $1,
					    HA_KEY_ALG_UNDEF, 1,
					    lex->col_list));
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| constraint opt_check_constraint
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
3582
	| opt_constraint check_constraint
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	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
	;

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opt_fulltext_parser:
        /* empty */               { $$= (LEX_STRING *)0; }
	| WITH PARSER_SYM IDENT_sys
          {
            if (plugin_is_ready(&$3, MYSQL_FTPARSER_PLUGIN))
              $$= (LEX_STRING *)sql_memdup(&$3, sizeof(LEX_STRING));
            else
            {
              my_error(ER_FUNCTION_NOT_DEFINED, MYF(0), $3.str);
              YYABORT;
            }
          }
        ;

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opt_check_constraint:
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	/* empty */
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	| check_constraint
	;

check_constraint:
	CHECK_SYM expr
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	;
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opt_constraint:
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	/* empty */		{ $$=(char*) 0; }
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	| constraint		{ $$= $1; }
	;

constraint:
	CONSTRAINT opt_ident	{ $$=$2; }
	;
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field_spec:
	field_ident
	 {
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	   LEX *lex=Lex;
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	   lex->length=lex->dec=0; lex->type=0;
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	   lex->default_value= lex->on_update_value= 0;
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           lex->comment=null_lex_str;
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	   lex->charset=NULL;
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	 }
	type opt_attribute
	{
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	  LEX *lex=Lex;
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	  if (add_field_to_list(lex->thd, $1.str,
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				(enum enum_field_types) $3,
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				lex->length,lex->dec,lex->type,
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				lex->default_value, lex->on_update_value, 
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                                &lex->comment,
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				lex->change,&lex->interval_list,lex->charset,
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				lex->uint_geom_type))
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	    YYABORT;
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	};
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type:
3643
	int_type opt_len field_options	{ $$=$1; }
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	| real_type opt_precision field_options { $$=$1; }
	| FLOAT_SYM float_options field_options { $$=FIELD_TYPE_FLOAT; }
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	| BIT_SYM			{ Lex->length= (char*) "1";
					  $$=FIELD_TYPE_BIT; }
	| BIT_SYM '(' NUM ')'		{ Lex->length= $3.str;
					  $$=FIELD_TYPE_BIT; }
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	| BOOL_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| BOOLEAN_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| char '(' NUM ')' opt_binary	{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING; }
	| char opt_binary		{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_STRING; }
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	| nchar '(' NUM ')' opt_bin_mod	{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| nchar opt_bin_mod		{ Lex->length=(char*) "1";
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| BINARY '(' NUM ')'		{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_STRING; }
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	| BINARY			{ Lex->length= (char*) "1";
					  Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_STRING; }
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	| varchar '(' NUM ')' opt_binary { Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| nvarchar '(' NUM ')' opt_bin_mod { Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR;
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					  Lex->charset=national_charset_info; }
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	| VARBINARY '(' NUM ')' 	{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| YEAR_SYM opt_len field_options { $$=FIELD_TYPE_YEAR; }
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	| DATE_SYM			{ $$=FIELD_TYPE_DATE; }
	| TIME_SYM			{ $$=FIELD_TYPE_TIME; }
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	| TIMESTAMP opt_len
3682
	  {
3683
	    if (YYTHD->variables.sql_mode & MODE_MAXDB)
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	      $$=FIELD_TYPE_DATETIME;
	    else
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            {
              /* 
                Unlike other types TIMESTAMP fields are NOT NULL by default.
              */
              Lex->type|= NOT_NULL_FLAG;
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	      $$=FIELD_TYPE_TIMESTAMP;
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            }
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	   }
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	| DATETIME			{ $$=FIELD_TYPE_DATETIME; }
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	| TINYBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_TINY_BLOB; }
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	| BLOB_SYM opt_len		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_BLOB; }
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	| spatial_type
          {
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#ifdef HAVE_SPATIAL
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            Lex->charset=&my_charset_bin;
            Lex->uint_geom_type= (uint)$1;
            $$=FIELD_TYPE_GEOMETRY;
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#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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            YYABORT;
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#endif
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          }
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	| MEDIUMBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONGBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_LONG_BLOB; }
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	| LONG_SYM VARBINARY		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONG_SYM varchar opt_binary	{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| TINYTEXT opt_binary		{ $$=FIELD_TYPE_TINY_BLOB; }
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	| TEXT_SYM opt_len opt_binary	{ $$=FIELD_TYPE_BLOB; }
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	| MEDIUMTEXT opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| LONGTEXT opt_binary		{ $$=FIELD_TYPE_LONG_BLOB; }
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	| DECIMAL_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| NUMERIC_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| FIXED_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| ENUM {Lex->interval_list.empty();} '(' string_list ')' opt_binary
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	  { $$=FIELD_TYPE_ENUM; }
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	| SET { Lex->interval_list.empty();} '(' string_list ')' opt_binary
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	  { $$=FIELD_TYPE_SET; }
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	| LONG_SYM opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| SERIAL_SYM
	  {
	    $$=FIELD_TYPE_LONGLONG;
	    Lex->type|= (AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNSIGNED_FLAG |
		         UNIQUE_FLAG);
	  }
3739
	;
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spatial_type:
	GEOMETRY_SYM	      { $$= Field::GEOM_GEOMETRY; }
	| GEOMETRYCOLLECTION  { $$= Field::GEOM_GEOMETRYCOLLECTION; }
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	| POINT_SYM           { Lex->length= (char*)"21";
                                $$= Field::GEOM_POINT;
                              }
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	| MULTIPOINT          { $$= Field::GEOM_MULTIPOINT; }
	| LINESTRING          { $$= Field::GEOM_LINESTRING; }
	| MULTILINESTRING     { $$= Field::GEOM_MULTILINESTRING; }
	| POLYGON             { $$= Field::GEOM_POLYGON; }
	| MULTIPOLYGON        { $$= Field::GEOM_MULTIPOLYGON; }
	;

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char:
	CHAR_SYM {}
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	;

nchar:
	NCHAR_SYM {}
	| NATIONAL_SYM CHAR_SYM {}
	;
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varchar:
	char VARYING {}
	| VARCHAR {}
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	;

nvarchar:
	NATIONAL_SYM VARCHAR {}
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	| NVARCHAR_SYM {}
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	| NCHAR_SYM VARCHAR {}
	| NATIONAL_SYM CHAR_SYM VARYING {}
	| NCHAR_SYM VARYING {}
	;
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int_type:
	INT_SYM		{ $$=FIELD_TYPE_LONG; }
	| TINYINT	{ $$=FIELD_TYPE_TINY; }
	| SMALLINT	{ $$=FIELD_TYPE_SHORT; }
	| MEDIUMINT	{ $$=FIELD_TYPE_INT24; }
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	| BIGINT	{ $$=FIELD_TYPE_LONGLONG; };
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real_type:
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	REAL		{ $$= YYTHD->variables.sql_mode & MODE_REAL_AS_FLOAT ?
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			      FIELD_TYPE_FLOAT : FIELD_TYPE_DOUBLE; }
	| DOUBLE_SYM	{ $$=FIELD_TYPE_DOUBLE; }
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	| DOUBLE_SYM PRECISION { $$=FIELD_TYPE_DOUBLE; };
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float_options:
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        /* empty */		{ Lex->dec=Lex->length= (char*)0; }
        | '(' NUM ')'		{ Lex->length=$2.str; Lex->dec= (char*)0; }
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	| precision		{};
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precision:
	'(' NUM ',' NUM ')'
	{
	  LEX *lex=Lex;
	  lex->length=$2.str; lex->dec=$4.str;
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	};
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field_options:
	/* empty */		{}
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	| field_opt_list	{};
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field_opt_list:
	field_opt_list field_option {}
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	| field_option {};
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field_option:
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	SIGNED_SYM	{}
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	| UNSIGNED	{ Lex->type|= UNSIGNED_FLAG;}
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	| ZEROFILL	{ Lex->type|= UNSIGNED_FLAG | ZEROFILL_FLAG; };
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opt_len:
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	/* empty */	{ Lex->length=(char*) 0; } /* use default length */
	| '(' NUM ')'	{ Lex->length= $2.str; };
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opt_precision:
	/* empty */	{}
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	| precision	{};
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opt_attribute:
	/* empty */ {}
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	| opt_attribute_list {};
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opt_attribute_list:
	opt_attribute_list attribute {}
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	| attribute;
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attribute:
	NULL_SYM	  { Lex->type&= ~ NOT_NULL_FLAG; }
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	| not NULL_SYM	  { Lex->type|= NOT_NULL_FLAG; }
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	| DEFAULT now_or_signed_literal { Lex->default_value=$2; }
	| ON UPDATE_SYM NOW_SYM optional_braces 
          { Lex->on_update_value= new Item_func_now_local(); }
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	| AUTO_INC	  { Lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG; }
3838
	| SERIAL_SYM DEFAULT VALUE_SYM
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	  { 
	    LEX *lex=Lex;
	    lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNIQUE_FLAG; 
3842
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| opt_primary KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= PRI_KEY_FLAG | NOT_NULL_FLAG; 
3848
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| UNIQUE_SYM	  
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_FLAG; 
3854
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| UNIQUE_SYM KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_KEY_FLAG; 
3860
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3861
	  }
3862
	| COMMENT_SYM TEXT_STRING_sys { Lex->comment= $2; }
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	| COLLATE_SYM collation_name
	  {
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	    if (Lex->charset && !my_charset_same(Lex->charset,$2))
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	    {
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	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $2->name,Lex->charset->csname);
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	      YYABORT;
	    }
	    else
	    {
	      Lex->charset=$2;
	    }
	  }
	;
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now_or_signed_literal:
        NOW_SYM optional_braces { $$= new Item_func_now_local(); }
        | signed_literal { $$=$1; }
        ;

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charset:
	CHAR_SYM SET	{}
	| CHARSET	{}
	;
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3888
charset_name:
3889
	ident_or_text
3890
	{
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	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))))
3892
	  {
3893
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    YYABORT;
	  }
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	}
	| BINARY { $$= &my_charset_bin; }
	;
3899

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charset_name_or_default:
	charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;
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old_or_new_charset_name:
	ident_or_text
	{
	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))) &&
	      !($$=get_old_charset_by_name($1.str)))
	  {
3911
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    YYABORT;
	  }
	}
	| BINARY { $$= &my_charset_bin; }
	;

old_or_new_charset_name_or_default:
	old_or_new_charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;

3922
collation_name:
3923
	ident_or_text
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	{
	  if (!($$=get_charset_by_name($1.str,MYF(0))))
	  {
3927
	    my_error(ER_UNKNOWN_COLLATION, MYF(0), $1.str);
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	    YYABORT;
	  }
	};

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opt_collate:
	/* empty */	{ $$=NULL; }
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	| COLLATE_SYM collation_name_or_default { $$=$2; }
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	;

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collation_name_or_default:
	collation_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;

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opt_default:
	/* empty */	{}
	| DEFAULT	{};

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opt_binary:
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	/* empty */			{ Lex->charset=NULL; }
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	| ASCII_SYM opt_bin_mod		{ Lex->charset=&my_charset_latin1; }
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	| BYTE_SYM			{ Lex->charset=&my_charset_bin; }
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	| UNICODE_SYM opt_bin_mod
	{
	  if (!(Lex->charset=get_charset_by_csname("ucs2",
                                                   MY_CS_PRIMARY,MYF(0))))
	  {
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), "ucs2");
	    YYABORT;
	  }
	}
	| charset charset_name opt_bin_mod	{ Lex->charset=$2; }
        | BINARY opt_bin_charset { Lex->type|= BINCMP_FLAG; };

opt_bin_mod:
	/* empty */ { }
	| BINARY { Lex->type|= BINCMP_FLAG; };

opt_bin_charset:
	/* empty */ { }
	| ASCII_SYM	{ Lex->charset=&my_charset_latin1; }
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	| UNICODE_SYM
	{
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	  if (!(Lex->charset=get_charset_by_csname("ucs2",
                                                   MY_CS_PRIMARY,MYF(0))))
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	  {
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	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), "ucs2");
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	    YYABORT;
	  }
	}
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	| charset charset_name	{ Lex->charset=$2; } ;
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opt_primary:
	/* empty */
	| PRIMARY_SYM
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	;
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references:
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	REFERENCES table_ident
	{
3987
	  LEX *lex=Lex;
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	  lex->fk_delete_opt= lex->fk_update_opt= lex->fk_match_option= 0;
	  lex->ref_list.empty();
	}
	opt_ref_list
	{
	  $$=$2;
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	};
3995

3996
opt_ref_list:
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	/* empty */ opt_on_delete {}
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	| '(' ref_list ')' opt_on_delete {};
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ref_list:
	ref_list ',' ident	{ Lex->ref_list.push_back(new key_part_spec($3.str)); }
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	| ident			{ Lex->ref_list.push_back(new key_part_spec($1.str)); };
4003

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opt_on_delete:
	/* empty */ {}
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	| opt_on_delete_list {};
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opt_on_delete_list:
	opt_on_delete_list opt_on_delete_item {}
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	| opt_on_delete_item {};
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opt_on_delete_item:
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	ON DELETE_SYM delete_option   { Lex->fk_delete_opt= $3; }
	| ON UPDATE_SYM delete_option { Lex->fk_update_opt= $3; }
	| MATCH FULL	{ Lex->fk_match_option= foreign_key::FK_MATCH_FULL; }
	| MATCH PARTIAL { Lex->fk_match_option= foreign_key::FK_MATCH_PARTIAL; }
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	| MATCH SIMPLE_SYM { Lex->fk_match_option= foreign_key::FK_MATCH_SIMPLE; };
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delete_option:
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	RESTRICT	 { $$= (int) foreign_key::FK_OPTION_RESTRICT; }
	| CASCADE	 { $$= (int) foreign_key::FK_OPTION_CASCADE; }
	| SET NULL_SYM   { $$= (int) foreign_key::FK_OPTION_SET_NULL; }
	| NO_SYM ACTION  { $$= (int) foreign_key::FK_OPTION_NO_ACTION; }
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	| SET DEFAULT    { $$= (int) foreign_key::FK_OPTION_DEFAULT;  };
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key_type:
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	key_or_index			    { $$= Key::MULTIPLE; }
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	| FULLTEXT_SYM opt_key_or_index	    { $$= Key::FULLTEXT; }
	| SPATIAL_SYM opt_key_or_index
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	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  };
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constraint_key_type:
	PRIMARY_SYM KEY_SYM  { $$= Key::PRIMARY; }
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	| UNIQUE_SYM opt_key_or_index { $$= Key::UNIQUE; };
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key_or_index:
	KEY_SYM {}
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	| INDEX_SYM {};
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opt_key_or_index:
	/* empty */ {}
	| key_or_index
	;

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keys_or_index:
	KEYS {}
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	| INDEX_SYM {}
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	| INDEXES {};
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opt_unique_or_fulltext:
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	/* empty */	{ $$= Key::MULTIPLE; }
	| UNIQUE_SYM	{ $$= Key::UNIQUE; }
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	| FULLTEXT_SYM	{ $$= Key::FULLTEXT;}
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	| SPATIAL_SYM
	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  }
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        ;
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key_alg:
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	/* empty */		   { $$= HA_KEY_ALG_UNDEF; }
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	| USING opt_btree_or_rtree { $$= $2; }
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	| TYPE_SYM opt_btree_or_rtree  { $$= $2; };
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opt_btree_or_rtree:
	BTREE_SYM	{ $$= HA_KEY_ALG_BTREE; }
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	| RTREE_SYM
	  {
	    $$= HA_KEY_ALG_RTREE;
	  }
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	| HASH_SYM	{ $$= HA_KEY_ALG_HASH; };
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key_list:
	key_list ',' key_part order_dir { Lex->col_list.push_back($3); }
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	| key_part order_dir		{ Lex->col_list.push_back($1); };
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key_part:
	ident			{ $$=new key_part_spec($1.str); }
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	| ident '(' NUM ')'	
        {
          int key_part_len= atoi($3.str);
          if (!key_part_len)
          {
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            my_error(ER_KEY_PART_0, MYF(0), $1.str);
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          }
          $$=new key_part_spec($1.str,(uint) key_part_len);
        };
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opt_ident:
	/* empty */	{ $$=(char*) 0; }	/* Defaultlength */
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	| field_ident	{ $$=$1.str; };
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opt_component:
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        /* empty */      { $$= null_lex_str; }
        | '.' ident      { $$= $2; };
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string_list:
	text_string			{ Lex->interval_list.push_back($1); }
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	| string_list ',' text_string	{ Lex->interval_list.push_back($3); };
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/*
** Alter table
*/

alter:
	ALTER opt_ignore TABLE_SYM table_ident
	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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	  lex->sql_command= SQLCOM_ALTER_TABLE;
	  lex->name= 0;
	  lex->duplicates= DUP_ERROR; 
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	  if (!lex->select_lex.add_table_to_list(thd, $4, NULL,
						 TL_OPTION_UPDATING))
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	    YYABORT;
	  lex->create_list.empty();
	  lex->key_list.empty();
	  lex->col_list.empty();
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          lex->select_lex.init_order();
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	  lex->select_lex.db=lex->name=0;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
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	  lex->create_info.db_type= DB_TYPE_DEFAULT;
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	  lex->create_info.default_table_charset= NULL;
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	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
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	  lex->alter_info.reset();
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	  lex->alter_info.flags= 0;
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	}
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	alter_commands
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	{}
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	| ALTER DATABASE ident_or_empty
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          {
            Lex->create_info.default_table_charset= NULL;
            Lex->create_info.used_fields= 0;
          }
          opt_create_database_options
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	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_ALTER_DB;
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	    lex->name= $3;
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	  }
	| ALTER PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

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	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
	      YYABORT;
	    }
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	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_PROCEDURE;
	    lex->spname= $3;
	  }
	| ALTER FUNCTION_SYM sp_name
	  {
	    LEX *lex= Lex;
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	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
	      YYABORT;
	    }
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	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_FUNCTION;
	    lex->spname= $3;
	  }
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        | ALTER view_algorithm_opt definer view_suid
          VIEW_SYM table_ident
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	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_CREATE_VIEW;
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            lex->create_view_start= thd->query;
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	    lex->create_view_mode= VIEW_ALTER;
	    /* first table in list is target VIEW name */
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	    lex->select_lex.add_table_to_list(thd, $6, NULL, 0);
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	  }
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	  view_list_opt AS view_select view_check_option
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	  {}
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	| ALTER EVENT_SYM sp_name
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          /* 
             BE CAREFUL when you add a new rule to update the block where 
             YYTHD->client_capabilities is set back to original value
          */
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          {
            LEX *lex=Lex;
            event_timed *et;

            if (lex->et)
            {
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              /*
                Recursive events are not possible because recursive SPs
                are not also possible. lex->sp_head is not stacked.
              */
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              // ToDo Andrey : Change the error message
              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
              YYABORT;
            }
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            lex->spname= 0;//defensive programming
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            et= new event_timed();// implicitly calls event_timed::init()
            lex->et = et;
            et->init_name(YYTHD, $3);

            /*
                We have to turn of CLIENT_MULTI_QUERIES while parsing a
                stored procedure, otherwise yylex will chop it into pieces
                at each ';'.
            */
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            $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
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            YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
	    
	    /*
	       defensive. in sql_parse.cc it is checked whether is not null
	       and then deleted
	    */
            lex->sphead= 0;	    
          }
          ev_on_schedule
          ev_rename_to
          ev_on_completion
          ev_status
          ev_comment
          ev_opt_sql_stmt
          {
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            /*
              $1 - ALTER
              $2 - EVENT_SYM
              $3 - sp_name
              $4 - the block above
            */
            YYTHD->client_capabilities |= $<ulong_num>4;

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            /*
              sql_command is set here because some rules in ev_sql_stmt
              can overwrite it
            */
            Lex->sql_command= SQLCOM_ALTER_EVENT;
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          }	  
      ;

ev_on_schedule: /* empty */
        | ON SCHEDULE_SYM ev_schedule_time;
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ev_opt_sql_stmt: /* empty*/
        | DO_SYM ev_sql_stmt;

ev_rename_to: /* empty */
        | RENAME TO_SYM sp_name
          {
            LEX *lex=Lex;
            lex->spname= $3; //use lex's spname to hold the new name
	                     //the original name is in the event_timed object
          }
      ;
  
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ident_or_empty:
	/* empty */  { $$= 0; }
	| ident      { $$= $1.str; };

4286
alter_commands:
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	| DISCARD TABLESPACE { Lex->alter_info.tablespace_op= DISCARD_TABLESPACE; }
	| IMPORT TABLESPACE { Lex->alter_info.tablespace_op= IMPORT_TABLESPACE; }
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        | alter_list
        opt_partitioning
        | partitioning
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/*
4293
  This part was added for release 5.1 by Mikael Ronström.
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  From here we insert a number of commands to manage the partitions of a
  partitioned table such as adding partitions, dropping partitions,
  reorganising partitions in various manners. In future releases the list
  will be longer and also include moving partitions to a
  new table and so forth.
*/
        | add_partition_rule
        | DROP PARTITION_SYM alt_part_name_list
          {
	    Lex->alter_info.flags|= ALTER_DROP_PARTITION;
          }
        | COALESCE PARTITION_SYM ulong_num
          {
            LEX *lex= Lex;
	    lex->alter_info.flags|= ALTER_COALESCE_PARTITION;
	    lex->alter_info.no_parts= $3;
          }
        | reorg_partition_rule
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        ;

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add_partition_rule:
        ADD PARTITION_SYM
        {
          LEX *lex= Lex;
          lex->part_info= new partition_info();
          if (!lex->part_info)
          {
            my_error(ER_OUTOFMEMORY, MYF(0), sizeof(partition_info));
            YYABORT;
          }
	  lex->alter_info.flags|= ALTER_ADD_PARTITION;
        }
        add_part_extra
        {}
        ;

add_part_extra:
        | '(' part_def_list ')'
        {
          LEX *lex= Lex;
          lex->part_info->no_parts= lex->part_info->count_curr_parts;
        }
        | PARTITIONS_SYM ulong_num
        {
          LEX *lex= Lex;
          lex->part_info->no_parts= $2;
        }
        ;

reorg_partition_rule:
        REORGANISE_SYM PARTITION_SYM
        {
          LEX *lex= Lex;
          lex->part_info= new partition_info();
          if (!lex->part_info)
          {
            my_error(ER_OUTOFMEMORY, MYF(0), sizeof(partition_info));
            YYABORT;
          }
	  lex->alter_info.flags|= ALTER_REORGANISE_PARTITION;
        }
        alt_part_name_list INTO '(' part_def_list ')'
        {
          LEX *lex= Lex;
          lex->part_info->no_parts= lex->part_info->count_curr_parts;
        }
        ;

alt_part_name_list:
        alt_part_name_item {}
        | alt_part_name_list ',' alt_part_name_item {}
        ;

alt_part_name_item:
        ident
        {
          Lex->alter_info.partition_names.push_back($1.str);
        }
        ;

/*
  End of management of partition commands
*/

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alter_list:
        alter_list_item
	| alter_list ',' alter_list_item
        ;
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add_column:
4384
	ADD opt_column
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	{
	  LEX *lex=Lex;
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	  lex->change=0;
	  lex->alter_info.flags|= ALTER_ADD_COLUMN;
4389
	};
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alter_list_item:
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	add_column column_def opt_place { }
	| ADD key_def
	  {
	    Lex->alter_info.flags|= ALTER_ADD_INDEX;
4396
	  }
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	| add_column '(' field_list ')'
          {
	    Lex->alter_info.flags|= ALTER_ADD_COLUMN | ALTER_ADD_INDEX;
          }
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	| CHANGE opt_column field_ident
	  {
	     LEX *lex=Lex;
4404
	     lex->change= $3.str;
4405
	     lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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	  }
4407
          field_spec opt_place
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        | MODIFY_SYM opt_column field_ident
          {
            LEX *lex=Lex;
4411
            lex->length=lex->dec=0; lex->type=0;
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            lex->default_value= lex->on_update_value= 0;
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            lex->comment=null_lex_str;
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	    lex->charset= NULL;
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	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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          }
          type opt_attribute
          {
            LEX *lex=Lex;
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            if (add_field_to_list(lex->thd,$3.str,
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                                  (enum enum_field_types) $5,
                                  lex->length,lex->dec,lex->type,
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                                  lex->default_value, lex->on_update_value,
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                                  &lex->comment,
4425
				  $3.str, &lex->interval_list, lex->charset,
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				  lex->uint_geom_type))
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	       YYABORT;
          }
          opt_place
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	| DROP opt_column field_ident opt_restrict
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::COLUMN,
4434
                                                               $3.str));
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	    lex->alter_info.flags|= ALTER_DROP_COLUMN;
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	  }
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	| DROP FOREIGN KEY_SYM opt_ident
          {
	    Lex->alter_info.flags|= ALTER_DROP_INDEX;
          }
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	| DROP PRIMARY_SYM KEY_SYM
	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
				               primary_key_name));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DROP key_or_index field_ident
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
					                       $3.str));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DISABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= DISABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
	| ENABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= ENABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
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	| ALTER opt_column field_ident SET DEFAULT signed_literal
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,$6));
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	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
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	| ALTER opt_column field_ident DROP DEFAULT
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,
                                                                  (Item*) 0));
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	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
4480
	| RENAME opt_to table_ident
4481
	  {
4482
	    LEX *lex=Lex;
4483
	    lex->select_lex.db=$3->db.str;
4484
	    lex->name= $3->table.str;
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            if (check_table_name($3->table.str,$3->table.length) ||
                $3->db.str && check_db_name($3->db.str))
            {
4488
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3->table.str);
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              YYABORT;
            }
4491
	    lex->alter_info.flags|= ALTER_RENAME;
4492
	  }
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	| CONVERT_SYM TO_SYM charset charset_name_or_default opt_collate
	  {
	    if (!$4)
	    {
	      THD *thd= YYTHD;
	      $4= thd->variables.collation_database;
	    }
	    $5= $5 ? $5 : $4;
	    if (!my_charset_same($4,$5))
	    {
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	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $5->name, $4->csname);
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	      YYABORT;
	    }
4507
	    LEX *lex= Lex;
4508
	    lex->create_info.table_charset=
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	      lex->create_info.default_table_charset= $5;
	    lex->create_info.used_fields|= (HA_CREATE_USED_CHARSET |
					    HA_CREATE_USED_DEFAULT_CHARSET);
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	    lex->alter_info.flags|= ALTER_CONVERT;
4513
	  }
4514
        | create_table_options_space_separated
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	  {
	    LEX *lex=Lex;
4517
	    lex->alter_info.flags|= ALTER_OPTIONS;
4518
	  }
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	| FORCE_SYM
	  {
	    Lex->alter_info.flags|= ALTER_FORCE;
	   }
4523
	| order_clause
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	  {
	    LEX *lex=Lex;
4526
	    lex->alter_info.flags|= ALTER_ORDER;
4527
	  };
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opt_column:
	/* empty */	{}
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	| COLUMN_SYM	{};
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opt_ignore:
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	/* empty */	{ Lex->ignore= 0;}
	| IGNORE_SYM	{ Lex->ignore= 1;}
	;
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opt_restrict:
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	/* empty */	{ Lex->drop_mode= DROP_DEFAULT; }
	| RESTRICT	{ Lex->drop_mode= DROP_RESTRICT; }
	| CASCADE	{ Lex->drop_mode= DROP_CASCADE; }
	;
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opt_place:
	/* empty */	{}
	| AFTER_SYM ident { store_position_for_column($2.str); }
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	| FIRST_SYM	  { store_position_for_column(first_keyword); };
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opt_to:
	/* empty */	{}
	| TO_SYM	{}
4552
	| EQ		{}
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	| AS		{};
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/*
4556
  SLAVE START and SLAVE STOP are deprecated. We keep them for compatibility.
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*/

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slave:
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	  START_SYM SLAVE slave_thread_opts
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          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_START;
	    lex->type = 0;
	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
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            /* If you change this code don't forget to update SLAVE START too */
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          }
          slave_until
          {}
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        | STOP_SYM SLAVE slave_thread_opts
          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_STOP;
	    lex->type = 0;
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            /* If you change this code don't forget to update SLAVE STOP too */
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          }
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	| SLAVE START_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_START;
	   lex->type = 0;
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	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
          }
          slave_until
          {}
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	| SLAVE STOP_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_STOP;
	   lex->type = 0;
         }
        ;

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start:
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	START_SYM TRANSACTION_SYM start_transaction_opts
        {
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          LEX *lex= Lex;
          lex->sql_command= SQLCOM_BEGIN;
          lex->start_transaction_opt= $3;
4603
        }
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	;

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start_transaction_opts:
        /*empty*/ { $$ = 0; }
        | WITH CONSISTENT_SYM SNAPSHOT_SYM
        {
           $$= MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT;
        }
4612
        ;
4613

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slave_thread_opts:
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	{ Lex->slave_thd_opt= 0; }
	slave_thread_opt_list
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        {}
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	;
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slave_thread_opt_list:
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	slave_thread_opt
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	| slave_thread_opt_list ',' slave_thread_opt
	;
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slave_thread_opt:
4626
	/*empty*/	{}
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	| SQL_THREAD	{ Lex->slave_thd_opt|=SLAVE_SQL; }
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	| RELAY_THREAD 	{ Lex->slave_thd_opt|=SLAVE_IO; }
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	;
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slave_until:
	/*empty*/	{}
	| UNTIL_SYM slave_until_opts
          {
            LEX *lex=Lex;
            if ((lex->mi.log_file_name || lex->mi.pos) &&
                (lex->mi.relay_log_name || lex->mi.relay_log_pos) ||
                !((lex->mi.log_file_name && lex->mi.pos) ||
                  (lex->mi.relay_log_name && lex->mi.relay_log_pos)))
            {
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               my_message(ER_BAD_SLAVE_UNTIL_COND,
                          ER(ER_BAD_SLAVE_UNTIL_COND), MYF(0));
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               YYABORT;
            }

          }
	;

slave_until_opts:
       master_file_def
       | slave_until_opts ',' master_file_def ;


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restore:
	RESTORE_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_RESTORE_TABLE;
	}
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	table_list FROM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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backup:
	BACKUP_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_BACKUP_TABLE;
	}
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	table_list TO_SYM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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checksum:
        CHECKSUM_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECKSUM;
	}
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	table_list opt_checksum_type
        {}
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	;

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opt_checksum_type:
        /* nothing */  { Lex->check_opt.flags= 0; }
	| QUICK        { Lex->check_opt.flags= T_QUICK; }
	| EXTENDED_SYM { Lex->check_opt.flags= T_EXTEND; }
        ;

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repair:
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	REPAIR opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_REPAIR;
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           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_repair_type
	{}
	;
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opt_mi_repair_type:
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	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_repair_types {};
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mi_repair_types:
	mi_repair_type {}
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	| mi_repair_type mi_repair_types {};
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mi_repair_type:
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	QUICK          { Lex->check_opt.flags|= T_QUICK; }
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	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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        | USE_FRM      { Lex->check_opt.sql_flags|= TT_USEFRM; };
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analyze:
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	ANALYZE_SYM opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_ANALYZE;
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           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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check:
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	CHECK_SYM table_or_tables
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	{
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	  LEX *lex=Lex;

	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "CHECK");
	    YYABORT;
	  }
	  lex->sql_command = SQLCOM_CHECK;
	  lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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opt_mi_check_type:
	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_check_types {};
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mi_check_types:
	mi_check_type {}
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	| mi_check_type mi_check_types {};
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mi_check_type:
	QUICK      { Lex->check_opt.flags|= T_QUICK; }
	| FAST_SYM { Lex->check_opt.flags|= T_FAST; }
	| MEDIUM_SYM { Lex->check_opt.flags|= T_MEDIUM; }
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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	| CHANGED  { Lex->check_opt.flags|= T_CHECK_ONLY_CHANGED; };
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optimize:
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	OPTIMIZE opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
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	   if (lex->sphead)
	   {
	     my_error(ER_SP_BADSTATEMENT, MYF(0), "OPTIMIZE TABLE");
	     YYABORT;
	   }
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	   lex->sql_command = SQLCOM_OPTIMIZE;
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           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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opt_no_write_to_binlog:
	/* empty */        { $$= 0; }
	| NO_WRITE_TO_BINLOG  { $$= 1; }
4779
	| LOCAL_SYM  { $$= 1; }
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	;

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rename:
	RENAME table_or_tables
	{
4785
          Lex->sql_command= SQLCOM_RENAME_TABLE;
4786
	}
4787 4788
	table_to_table_list
	{}
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	| RENAME USER clear_privileges rename_list
          {
	    Lex->sql_command = SQLCOM_RENAME_USER;
          }
4793
	;
4794

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rename_list:
        user TO_SYM user
        {
          if (Lex->users_list.push_back($1) || Lex->users_list.push_back($3))
            YYABORT;
        }
        | rename_list ',' user TO_SYM user
          {
            if (Lex->users_list.push_back($3) || Lex->users_list.push_back($5))
              YYABORT;
          }
        ;

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table_to_table_list:
	table_to_table
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	| table_to_table_list ',' table_to_table;
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table_to_table:
	table_ident TO_SYM table_ident
4814
	{
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	  LEX *lex=Lex;
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	  SELECT_LEX *sl= lex->current_select;
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	  if (!sl->add_table_to_list(lex->thd, $1,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE) ||
	      !sl->add_table_to_list(lex->thd, $3,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE))
4821
	    YYABORT;
4822
	};
4823

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keycache:
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        CACHE_SYM INDEX_SYM keycache_list IN_SYM key_cache_name
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        {
          LEX *lex=Lex;
4828
          lex->sql_command= SQLCOM_ASSIGN_TO_KEYCACHE;
4829
	  lex->ident= $5;
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        }
        ;

keycache_list:
        assign_to_keycache
        | keycache_list ',' assign_to_keycache;

assign_to_keycache:
4838
        table_ident cache_keys_spec
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        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          if (!sel->add_table_to_list(lex->thd, $1, NULL, 0,
                                      TL_READ,
                                      sel->get_use_index(),
4845
                                      (List<String> *)0))
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            YYABORT;
        }
        ;

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key_cache_name:
	ident	   { $$= $1; }
	| DEFAULT  { $$ = default_key_cache_base; }
4853
	;
4854

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preload:
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	LOAD INDEX_SYM INTO CACHE_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command=SQLCOM_PRELOAD_KEYS;
	}
	preload_list
	{}
	;

preload_list:
	preload_keys
	| preload_list ',' preload_keys;

preload_keys:
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	table_ident cache_keys_spec opt_ignore_leaves
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	{
	  LEX *lex=Lex;
	  SELECT_LEX *sel= &lex->select_lex;
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	  if (!sel->add_table_to_list(lex->thd, $1, NULL, $3,
                                      TL_READ,
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                                      sel->get_use_index(),
                                      (List<String> *)0))
            YYABORT;
	}
	;

4882
cache_keys_spec:
4883
        { Select->interval_list.empty(); }
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        cache_key_list_or_empty
        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          sel->use_index= sel->interval_list;
        }
        ;
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cache_key_list_or_empty:
4893
	/* empty */	{ Lex->select_lex.use_index_ptr= 0; }
4894
	| opt_key_or_index '(' key_usage_list2 ')'
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	  {
            SELECT_LEX *sel= &Lex->select_lex;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	;

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opt_ignore_leaves:
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	/* empty */
	{ $$= 0; }
	| IGNORE_SYM LEAVES { $$= TL_OPTION_IGNORE_LEAVES; }
	;

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/*
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  Select : retrieve data from table
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*/


select:
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	select_init
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_SELECT;
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	}
	;
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4920
/* Need select_init2 for subselects. */
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select_init:
4922
	SELECT_SYM select_init2
4923
	|
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	'(' select_paren ')' union_opt;

select_paren:
	SELECT_SYM select_part2
4928
	  {
4929
	    LEX *lex= Lex;
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            SELECT_LEX * sel= lex->current_select;
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	    if (sel->set_braces(1))
4932
	    {
4933
	      yyerror(ER(ER_SYNTAX_ERROR));
4934 4935
	      YYABORT;
	    }
4936 4937
	  if (sel->linkage == UNION_TYPE &&
	      !sel->master_unit()->first_select()->braces)
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	  {
4939
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
4942
            /* select in braces, can't contain global parameters */
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	    if (sel->master_unit()->fake_select_lex)
              sel->master_unit()->global_parameters=
                 sel->master_unit()->fake_select_lex;
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          }
	| '(' select_paren ')';
4948

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select_init2:
	select_part2
4951
        {
4952
	  LEX *lex= Lex;
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          SELECT_LEX * sel= lex->current_select;
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          if (lex->current_select->set_braces(0))
4955
	  {
4956
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
4959 4960
	  if (sel->linkage == UNION_TYPE &&
	      sel->master_unit()->first_select()->braces)
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	  {
4962
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
4965
	}
4966
	union_clause
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	;

4969
select_part2:
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	{
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	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->linkage != UNION_TYPE)
	    mysql_init_select(lex);
4975
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
	select_options select_item_list
	{
4979
	  Select->parsing_place= NO_MATTER;
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	}
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	select_into select_lock_type;
4982

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select_into:
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	opt_order_clause opt_limit_clause {}
4985
        | into
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	| select_from
4987 4988
	| into select_from
	| select_from into;
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select_from:
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	  FROM join_table_list where_clause group_clause having_clause
	       opt_order_clause opt_limit_clause procedure_clause
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        | FROM DUAL_SYM where_clause opt_limit_clause
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          /* oracle compatibility: oracle always requires FROM clause,
             and DUAL is system table without fields.
             Is "SELECT 1 FROM DUAL" any better than "SELECT 1" ?
          Hmmm :) */
4998
	;
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select_options:
	/* empty*/
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	| select_option_list
	  {
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	    if (Select->options & SELECT_DISTINCT && Select->options & SELECT_ALL)
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	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "ALL", "DISTINCT");
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              YYABORT;
	    }
          }
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	  ;
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select_option_list:
	select_option_list select_option
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	| select_option;
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select_option:
5017
	STRAIGHT_JOIN { Select->options|= SELECT_STRAIGHT_JOIN; }
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	| HIGH_PRIORITY
	  {
	    if (check_simple_select())
	      YYABORT;
	    Lex->lock_option= TL_READ_HIGH_PRIORITY;
	  }
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	| DISTINCT         { Select->options|= SELECT_DISTINCT; }
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	| SQL_SMALL_RESULT { Select->options|= SELECT_SMALL_RESULT; }
	| SQL_BIG_RESULT { Select->options|= SELECT_BIG_RESULT; }
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	| SQL_BUFFER_RESULT
	  {
	    if (check_simple_select())
	      YYABORT;
	    Select->options|= OPTION_BUFFER_RESULT;
	  }
	| SQL_CALC_FOUND_ROWS
	  {
	    if (check_simple_select())
	      YYABORT;
	    Select->options|= OPTION_FOUND_ROWS;
	  }
5039
	| SQL_NO_CACHE_SYM { Lex->safe_to_cache_query=0; }
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	| SQL_CACHE_SYM
	  {
	    Lex->select_lex.options|= OPTION_TO_QUERY_CACHE;
	  }
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	| ALL		    { Select->options|= SELECT_ALL; }
5045
	;
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select_lock_type:
	/* empty */
	| FOR_SYM UPDATE_SYM
5050 5051
	  {
	    LEX *lex=Lex;
5052
	    lex->current_select->set_lock_for_tables(TL_WRITE);
5053
	    lex->safe_to_cache_query=0;
5054
	  }
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	| LOCK_SYM IN_SYM SHARE_SYM MODE_SYM
5056 5057
	  {
	    LEX *lex=Lex;
5058 5059
	    lex->current_select->
	      set_lock_for_tables(TL_READ_WITH_SHARED_LOCKS);
5060
	    lex->safe_to_cache_query=0;
5061 5062
	  }
	;
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select_item_list:
	  select_item_list ',' select_item
	| select_item
	| '*'
	  {
5069
	    THD *thd= YYTHD;
5070 5071 5072 5073
	    if (add_item_to_list(thd,
                                 new Item_field(&thd->lex->current_select->
                                                context,
                                                NULL, NULL, "*")))
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	      YYABORT;
5075
	    (thd->lex->current_select->with_wild)++;
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	  };
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select_item:
	  remember_name select_item2 remember_end select_alias
	  {
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	    if (add_item_to_list(YYTHD, $2))
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	      YYABORT;
	    if ($4.str)
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            {
	      $2->set_name($4.str, $4.length, system_charset_info);
              $2->is_autogenerated_name= FALSE;
            }
5089 5090 5091 5092 5093 5094
	    else if (!$2->name) {
	      char *str = $1;
	      if (str[-1] == '`')
	        str--;
	      $2->set_name(str,(uint) ($3 - str), YYTHD->charset());
	    }
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	  };
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remember_name:
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	{ $$=(char*) Lex->tok_start; };
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remember_end:
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	{ $$=(char*) Lex->tok_end; };
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select_item2:
	table_wild	{ $$=$1; } /* table.* */
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	| expr		{ $$=$1; };
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select_alias:
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	/* empty */		{ $$=null_lex_str;}
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	| AS ident		{ $$=$2; }
	| AS TEXT_STRING_sys	{ $$=$2; }
	| ident			{ $$=$1; }
	| TEXT_STRING_sys	{ $$=$1; }
	;
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optional_braces:
	/* empty */ {}
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	| '(' ')' {};
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/* all possible expressions */
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expr:	
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	  bool_term { Select->expr_list.push_front(new List<Item>); }
          bool_or_expr
          {
            List<Item> *list= Select->expr_list.pop();
            if (list->elements)
            {
              list->push_front($1);
              $$= new Item_cond_or(*list);
              /* optimize construction of logical OR to reduce
                 amount of objects for complex expressions */
            }
            else
              $$= $1;
            delete list;
          }
	;

bool_or_expr:
	/* empty */
        | bool_or_expr or bool_term
          { Select->expr_list.head()->push_back($3); }
        ;
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bool_term:
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	bool_term XOR bool_term { $$= new Item_cond_xor($1,$3); }
	| bool_factor { Select->expr_list.push_front(new List<Item>); }
          bool_and_expr
          {
            List<Item> *list= Select->expr_list.pop();
            if (list->elements)
            {
              list->push_front($1);
              $$= new Item_cond_and(*list);
              /* optimize construction of logical AND to reduce
                 amount of objects for complex expressions */
            }
            else
              $$= $1;
            delete list;
          }
	;

bool_and_expr:
	/* empty */
        | bool_and_expr and bool_factor
          { Select->expr_list.head()->push_back($3); }
        ;
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bool_factor:
	NOT_SYM bool_factor	{ $$= negate_expression(YYTHD, $2); }
	| bool_test ;

bool_test:
	bool_pri IS TRUE_SYM	{ $$= is_truth_value($1,1,0); }
	| bool_pri IS not TRUE_SYM { $$= is_truth_value($1,0,0); }
	| bool_pri IS FALSE_SYM	{ $$= is_truth_value($1,0,1); }
	| bool_pri IS not FALSE_SYM { $$= is_truth_value($1,1,1); }
	| bool_pri IS UNKNOWN_SYM { $$= new Item_func_isnull($1); }
	| bool_pri IS not UNKNOWN_SYM { $$= new Item_func_isnotnull($1); }
	| bool_pri ;

bool_pri:
	bool_pri IS NULL_SYM	{ $$= new Item_func_isnull($1); }
	| bool_pri IS not NULL_SYM { $$= new Item_func_isnotnull($1); }
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	| bool_pri EQUAL_SYM predicate	{ $$= new Item_func_equal($1,$3); }
	| bool_pri comp_op predicate %prec EQ
	  { $$= (*$2)(0)->create($1,$3); }
	| bool_pri comp_op all_or_any in_subselect %prec EQ
	  { $$= all_any_subquery_creator($1, $2, $3, $4); }
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	| predicate ;

predicate:
	 bit_expr IN_SYM '(' expr_list ')'
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	  { 
            if ($4->elements == 1)
              $$= new Item_func_eq($1, $4->head());
            else
            {
              $4->push_front($1);
              $$= new Item_func_in(*$4);
            }
          }
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	| bit_expr not IN_SYM '(' expr_list ')'
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          {
            if ($5->elements == 1)
              $$= new Item_func_ne($1, $5->head());
            else
            {
              $5->push_front($1);
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              Item_func_in *item = new Item_func_in(*$5);
              item->negate();
              $$= item;
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            }            
          }
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        | bit_expr IN_SYM in_subselect
	  { $$= new Item_in_subselect($1, $3); }
	| bit_expr not IN_SYM in_subselect
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          { $$= negate_expression(YYTHD, new Item_in_subselect($1, $4)); }
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	| bit_expr BETWEEN_SYM bit_expr AND_SYM predicate
	  { $$= new Item_func_between($1,$3,$5); }
	| bit_expr not BETWEEN_SYM bit_expr AND_SYM predicate
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    {
      Item_func_between *item= new Item_func_between($1,$4,$6);
      item->negate();
      $$= item;
    }
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	| bit_expr SOUNDS_SYM LIKE bit_expr
	  { $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4)); }
	| bit_expr LIKE simple_expr opt_escape
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          { $$= new Item_func_like($1,$3,$4,Lex->escape_used); }
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	| bit_expr not LIKE simple_expr opt_escape
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          { $$= new Item_func_not(new Item_func_like($1,$4,$5, Lex->escape_used)); }
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	| bit_expr REGEXP bit_expr	{ $$= new Item_func_regex($1,$3); }
	| bit_expr not REGEXP bit_expr
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          { $$= negate_expression(YYTHD, new Item_func_regex($1,$4)); }
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	| bit_expr ;

bit_expr:
	bit_expr '|' bit_term	{ $$= new Item_func_bit_or($1,$3); }
	| bit_term ;

bit_term:
	bit_term '&' bit_factor	{ $$= new Item_func_bit_and($1,$3); }
	| bit_factor ;

bit_factor:
	bit_factor SHIFT_LEFT value_expr
	  { $$= new Item_func_shift_left($1,$3); }
	| bit_factor SHIFT_RIGHT value_expr 
	  { $$= new Item_func_shift_right($1,$3); }
	| value_expr ;

value_expr:
	value_expr '+' term	{ $$= new Item_func_plus($1,$3); }
	| value_expr '-' term	{ $$= new Item_func_minus($1,$3); }
	| value_expr '+' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,0); }
	| value_expr '-' interval_expr interval
	  { $$= new Item_date_add_interval($1,$3,$4,1); }
	| term ;

term:
	term '*' factor		{ $$= new Item_func_mul($1,$3); }
	| term '/' factor	{ $$= new Item_func_div($1,$3); }
	| term '%' factor	{ $$= new Item_func_mod($1,$3); }
	| term DIV_SYM factor	{ $$= new Item_func_int_div($1,$3); }
	| term MOD_SYM factor	{ $$= new Item_func_mod($1,$3); }
	| factor ;

factor:
        factor '^' simple_expr	{ $$= new Item_func_bit_xor($1,$3); }
	| simple_expr ;

or:	OR_SYM | OR2_SYM;
and:	AND_SYM | AND_AND_SYM;
not:	NOT_SYM | NOT2_SYM;
not2:	'!' | NOT2_SYM;
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comp_op:  EQ		{ $$ = &comp_eq_creator; }
	| GE		{ $$ = &comp_ge_creator; }
	| GT_SYM	{ $$ = &comp_gt_creator; }
	| LE		{ $$ = &comp_le_creator; }
	| LT		{ $$ = &comp_lt_creator; }
	| NE		{ $$ = &comp_ne_creator; }
	;

all_or_any: ALL     { $$ = 1; }
        |   ANY_SYM { $$ = 0; }
        ;

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interval_expr:
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         INTERVAL_SYM expr { $$=$2; }
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        ;

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simple_expr:
	simple_ident
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 	| simple_expr COLLATE_SYM ident_or_text %prec NEG
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	  {
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	    $$= new Item_func_set_collation($1,
					    new Item_string($3.str,
							    $3.length,
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                                                            YYTHD->charset()));
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	  }
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	| literal
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	| param_marker
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	| '@' ident_or_text SET_VAR expr
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	  {
	    $$= new Item_func_set_user_var($2,$4);
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	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
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	  }
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	| '@' ident_or_text
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	  {
	    $$= new Item_func_get_user_var($2);
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	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
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	  }
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	| '@' '@' opt_var_ident_type ident_or_text opt_component
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	  {
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            if ($4.str && $5.str && check_reserved_words(&$4))
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
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	    if (!($$= get_system_var(YYTHD, $3, $4, $5)))
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	      YYABORT;
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	    Lex->variables_used= 1;
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	  }
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	| sum_expr
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	| simple_expr OR_OR_SYM simple_expr
	  { $$= new Item_func_concat($1, $3); }
	| '+' simple_expr %prec NEG	{ $$= $2; }
	| '-' simple_expr %prec NEG	{ $$= new Item_func_neg($2); }
	| '~' simple_expr %prec NEG	{ $$= new Item_func_bit_neg($2); }
	| not2 simple_expr %prec NEG	{ $$= negate_expression(YYTHD, $2); }
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	| '(' expr ')'		{ $$= $2; }
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	| '(' expr ',' expr_list ')'
	  {
	    $4->push_front($2);
	    $$= new Item_row(*$4);
	  }
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	| ROW_SYM '(' expr ',' expr_list ')'
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	  {
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	    $5->push_front($3);
	    $$= new Item_row(*$5);
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	  }
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	| EXISTS exists_subselect { $$= $2; }
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	| singlerow_subselect   { $$= $1; }
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	| '{' ident expr '}'	{ $$= $3; }
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        | MATCH ident_list_arg AGAINST '(' bit_expr fulltext_options ')'
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          { $2->push_front($5);
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            Select->add_ftfunc_to_list((Item_func_match*)
                                        ($$=new Item_func_match(*$2,$6))); }
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	| ASCII_SYM '(' expr ')' { $$= new Item_func_ascii($3); }
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	| BINARY simple_expr %prec NEG
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	  {
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            $$= create_func_cast($2, ITEM_CAST_CHAR, -1, 0, &my_charset_bin);
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	  }
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	| CAST_SYM '(' expr AS cast_type ')'
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	  {
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            LEX *lex= Lex;
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	    $$= create_func_cast($3, $5,
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                                 lex->length ? atoi(lex->length) : -1,
                                 lex->dec ? atoi(lex->dec) : 0,
                                 lex->charset);
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	  }
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	| CASE_SYM opt_expr WHEN_SYM when_list opt_else END
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	  { $$= new Item_func_case(* $4, $2, $5 ); }
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	| CONVERT_SYM '(' expr ',' cast_type ')'
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	  {
	    $$= create_func_cast($3, $5,
				 Lex->length ? atoi(Lex->length) : -1,
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                                 Lex->dec ? atoi(Lex->dec) : 0,
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				 Lex->charset);
	  }
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	| CONVERT_SYM '(' expr USING charset_name ')'
	  { $$= new Item_func_conv_charset($3,$5); }
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	| DEFAULT '(' simple_ident ')'
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	  {
	    if ($3->is_splocal())
	    {
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	      LEX_STRING *name;
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	      Item_splocal *il= static_cast<Item_splocal *>($3);

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	      name= il->my_name(NULL);
	      my_error(ER_WRONG_COLUMN_NAME, MYF(0), name->str);
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	      YYABORT;
	    }
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	    $$= new Item_default_value(Lex->current_context(), $3);
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	  }
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	| VALUES '(' simple_ident ')'
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	  { $$= new Item_insert_value(Lex->current_context(), $3); }
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	| FUNC_ARG0 '(' ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(void))($1.symbol->create_func))();
	  }
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	| FUNC_ARG1 '(' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*))($1.symbol->create_func))($3);
	  }
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	| FUNC_ARG2 '(' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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	      my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*))($1.symbol->create_func))($3,$5);
	  }
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	| FUNC_ARG3 '(' expr ',' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*,Item*))($1.symbol->create_func))($3,$5,$7);
	  }
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	| ADDDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 0);}
	| ADDDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 0); }
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	| REPEAT_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_repeat($3,$5); }
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	| ATAN	'(' expr ')'
	  { $$= new Item_func_atan($3); }
	| ATAN	'(' expr ',' expr ')'
	  { $$= new Item_func_atan($3,$5); }
	| CHAR_SYM '(' expr_list ')'
	  { $$= new Item_func_char(*$3); }
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	| CHAR_SYM '(' expr_list USING charset_name ')'
	  { $$= new Item_func_char(*$3, $5); }
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	| CHARSET '(' expr ')'
	  { $$= new Item_func_charset($3); }
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	| COALESCE '(' expr_list ')'
	  { $$= new Item_func_coalesce(* $3); }
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	| COLLATION_SYM '(' expr ')'
	  { $$= new Item_func_collation($3); }
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	| CONCAT '(' expr_list ')'
	  { $$= new Item_func_concat(* $3); }
	| CONCAT_WS '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_concat_ws(*$5); }
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	| CONVERT_TZ_SYM '(' expr ',' expr ',' expr ')'
	  {
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            if (Lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
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	    $$= new Item_func_convert_tz($3, $5, $7);
	  }
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	| CURDATE optional_braces
5472
	  { $$= new Item_func_curdate_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME optional_braces
5474
	  { $$= new Item_func_curtime_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME '(' expr ')'
5476
	  {
5477
	    $$= new Item_func_curtime_local($3);
5478
	    Lex->safe_to_cache_query=0;
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	  }
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	| CURRENT_USER optional_braces
5481
          { $$= create_func_current_user(); }
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	| DATE_ADD_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,0); }
	| DATE_SUB_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,1); }
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	| DATABASE '(' ')'
5487
	  {
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	    $$= new Item_func_database();
5489
            Lex->safe_to_cache_query=0;
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	  }
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	| DATE_SYM '(' expr ')'
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	  { $$= new Item_date_typecast($3); }
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	| DAY_SYM '(' expr ')'
	  { $$= new Item_func_dayofmonth($3); }
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	| ELT_FUNC '(' expr ',' expr_list ')'
5496
	  { $5->push_front($3); $$= new Item_func_elt(*$5); }
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	| MAKE_SET_SYM '(' expr ',' expr_list ')'
	  { $$= new Item_func_make_set($3, *$5); }
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	| ENCRYPT '(' expr ')'
	  {
	    $$= new Item_func_encrypt($3);
5502
	    Lex->uncacheable(UNCACHEABLE_RAND);
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	  }
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	| ENCRYPT '(' expr ',' expr ')'   { $$= new Item_func_encrypt($3,$5); }
5505
	| DECODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	  { $$= new Item_func_decode($3,$5.str); }
5507
	| ENCODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	 { $$= new Item_func_encode($3,$5.str); }
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	| DES_DECRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_decrypt($3); }
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	| DES_DECRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_decrypt($3,$5); }
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	| DES_ENCRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_encrypt($3); }
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	| DES_ENCRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_encrypt($3,$5); }
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	| EXPORT_SET '(' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9, $11); }
	| FORMAT_SYM '(' expr ',' NUM ')'
	  { $$= new Item_func_format($3,atoi($5.str)); }
	| FROM_UNIXTIME '(' expr ')'
	  { $$= new Item_func_from_unixtime($3); }
	| FROM_UNIXTIME '(' expr ',' expr ')'
	  {
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	    $$= new Item_func_date_format (new Item_func_from_unixtime($3),$5,0);
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	  }
	| FIELD_FUNC '(' expr ',' expr_list ')'
5532
	  { $5->push_front($3); $$= new Item_func_field(*$5); }
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	| geometry_function
	  {
#ifdef HAVE_SPATIAL
	    $$= $1;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  }
5543
	| GET_FORMAT '(' date_time_type  ',' expr ')'
5544
	  { $$= new Item_func_get_format($3, $5); }
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	| HOUR_SYM '(' expr ')'
	  { $$= new Item_func_hour($3); }
	| IF '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_if($3,$5,$7); }
	| INSERT '(' expr ',' expr ',' expr ',' expr ')'
	  { $$= new Item_func_insert($3,$5,$7,$9); }
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	| interval_expr interval '+' expr
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	  /* we cannot put interval before - */
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	  { $$= new Item_date_add_interval($4,$1,$2,0); }
	| interval_expr
	  {
            if ($1->type() != Item::ROW_ITEM)
            {
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              yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
            $$= new Item_func_interval((Item_row *)$1);
          }
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	| LAST_INSERT_ID '(' ')'
	  {
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	    $$= new Item_func_last_insert_id();
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	    Lex->safe_to_cache_query= 0;
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	  }
	| LAST_INSERT_ID '(' expr ')'
	  {
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	    $$= new Item_func_last_insert_id($3);
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	    Lex->safe_to_cache_query= 0;
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	  }
	| LEFT '(' expr ',' expr ')'
	  { $$= new Item_func_left($3,$5); }
	| LOCATE '(' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3); }
	| LOCATE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3,$7); }
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	| GREATEST_SYM '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_max(*$5); }
	| LEAST_SYM '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_min(*$5); }
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	| LOG_SYM '(' expr ')'
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	  { $$= new Item_func_log($3); }
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	| LOG_SYM '(' expr ',' expr ')'
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	  { $$= new Item_func_log($3, $5); }
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	| MASTER_POS_WAIT '(' expr ',' expr ')'
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	  {
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	    $$= new Item_master_pos_wait($3, $5);
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	    Lex->safe_to_cache_query=0;
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		  }
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	| MASTER_POS_WAIT '(' expr ',' expr ',' expr ')'
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	  {
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	    $$= new Item_master_pos_wait($3, $5, $7);
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	    Lex->safe_to_cache_query=0;
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	  }
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	| MICROSECOND_SYM '(' expr ')'
	  { $$= new Item_func_microsecond($3); }
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	| MINUTE_SYM '(' expr ')'
	  { $$= new Item_func_minute($3); }
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	| MOD_SYM '(' expr ',' expr ')'
	  { $$ = new Item_func_mod( $3, $5); }
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	| MONTH_SYM '(' expr ')'
	  { $$= new Item_func_month($3); }
	| NOW_SYM optional_braces
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	  { $$= new Item_func_now_local(); Lex->safe_to_cache_query=0;}
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	| NOW_SYM '(' expr ')'
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	  { $$= new Item_func_now_local($3); Lex->safe_to_cache_query=0;}
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	| PASSWORD '(' expr ')'
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	  {
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	    $$= YYTHD->variables.old_passwords ?
              (Item *) new Item_func_old_password($3) :
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	      (Item *) new Item_func_password($3);
	  }
	| OLD_PASSWORD '(' expr ')'
	  { $$=  new Item_func_old_password($3); }
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	| POSITION_SYM '(' bit_expr IN_SYM expr ')'
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	  { $$ = new Item_func_locate($5,$3); }
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	| QUARTER_SYM '(' expr ')'
	  { $$ = new Item_func_quarter($3); }
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	| RAND '(' expr ')'
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	  { $$= new Item_func_rand($3); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| RAND '(' ')'
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	  { $$= new Item_func_rand(); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| REPLACE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_replace($3,$5,$7); }
	| RIGHT '(' expr ',' expr ')'
	  { $$= new Item_func_right($3,$5); }
	| ROUND '(' expr ')'
	  { $$= new Item_func_round($3, new Item_int((char*)"0",0,1),0); }
	| ROUND '(' expr ',' expr ')' { $$= new Item_func_round($3,$5,0); }
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	| ROW_COUNT_SYM '(' ')'
	  {
	    $$= new Item_func_row_count();
	    Lex->safe_to_cache_query= 0;
	  }
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	| SUBDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 1);}
	| SUBDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 1); }
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	| SECOND_SYM '(' expr ')'
	  { $$= new Item_func_second($3); }
	| SUBSTRING '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING '(' expr FROM expr FOR_SYM expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr FROM expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING_INDEX '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr_index($3,$5,$7); }
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	| SYSDATE optional_braces
	  { $$= new Item_func_sysdate_local(); Lex->safe_to_cache_query=0;}
	| SYSDATE '(' expr ')'
	  { $$= new Item_func_sysdate_local($3); Lex->safe_to_cache_query=0;}
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	| TIME_SYM '(' expr ')'
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	  { $$= new Item_time_typecast($3); }
	| TIMESTAMP '(' expr ')'
	  { $$= new Item_datetime_typecast($3); }
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	| TIMESTAMP '(' expr ',' expr ')'
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	  { $$= new Item_func_add_time($3, $5, 1, 0); }
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	| TIMESTAMP_ADD '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_date_add_interval($7,$5,$3,0); }
	| TIMESTAMP_DIFF '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_func_timestamp_diff($5,$7,$3); }
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	| TRIM '(' expr ')'
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	  { $$= new Item_func_trim($3); }
	| TRIM '(' LEADING expr FROM expr ')'
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	  { $$= new Item_func_ltrim($6,$4); }
5671
	| TRIM '(' TRAILING expr FROM expr ')'
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	  { $$= new Item_func_rtrim($6,$4); }
5673
	| TRIM '(' BOTH expr FROM expr ')'
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	  { $$= new Item_func_trim($6,$4); }
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	| TRIM '(' LEADING FROM expr ')'
	 { $$= new Item_func_ltrim($5); }
	| TRIM '(' TRAILING FROM expr ')'
	  { $$= new Item_func_rtrim($5); }
	| TRIM '(' BOTH FROM expr ')'
	  { $$= new Item_func_trim($5); }
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	| TRIM '(' expr FROM expr ')'
	  { $$= new Item_func_trim($5,$3); }
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	| TRUNCATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_round($3,$5,1); }
5685
	| ident '.' ident '(' udf_expr_list ')'
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	  {
5687
	    LEX *lex= Lex;
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	    sp_name *name= new sp_name($1, $3);

	    name->init_qname(YYTHD);
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	    sp_add_used_routine(lex, YYTHD, name, TYPE_ENUM_FUNCTION);
5692
	    if ($5)
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	      $$= new Item_func_sp(Lex->current_context(), name, *$5);
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	    else
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	      $$= new Item_func_sp(Lex->current_context(), name);
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	    lex->safe_to_cache_query=0;
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	  }
5698
	| IDENT_sys '(' 
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          {
#ifdef HAVE_DLOPEN
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            udf_func *udf= 0;
            if (using_udf_functions &&
                (udf= find_udf($1.str, $1.length)) &&
                udf->type == UDFTYPE_AGGREGATE)
            {
              LEX *lex= Lex;
              if (lex->current_select->inc_in_sum_expr())
              {
                yyerror(ER(ER_SYNTAX_ERROR));
                YYABORT;
              }
            }
            $<udf>$= udf;
#endif
          }
          udf_expr_list ')'
          {
#ifdef HAVE_DLOPEN
            udf_func *udf= $<udf>3;
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            SELECT_LEX *sel= Select;
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5722
            if (udf)
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            {
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              if (udf->type == UDFTYPE_AGGREGATE)
                Select->in_sum_expr--;

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              switch (udf->returns) {
              case STRING_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_str(udf, *$4);
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                  else
                    $$ = new Item_func_udf_str(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_str(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_str(udf);
                }
                break;
              case REAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_float(udf, *$4);
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                  else
                    $$ = new Item_func_udf_float(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_float(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_float(udf);
                }
                break;
              case INT_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_int(udf, *$4);
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                  else
                    $$ = new Item_func_udf_int(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_int(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_int(udf);
                }
                break;
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              case DECIMAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_decimal(udf, *$4);
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                  else
                    $$ = new Item_func_udf_decimal(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_decimal(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_decimal(udf);
                }
                break;
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              default:
                YYABORT;
              }
            }
            else
#endif /* HAVE_DLOPEN */
            {
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	      LEX *lex= Lex;
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              sp_name *name= sp_name_current_db_new(YYTHD, $1);

5802
              sp_add_used_routine(lex, YYTHD, name, TYPE_ENUM_FUNCTION);
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              if ($4)
                $$= new Item_func_sp(Lex->current_context(), name, *$4);
5805
              else
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                $$= new Item_func_sp(Lex->current_context(), name);
5807
	      lex->safe_to_cache_query=0;
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	    }
          }
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	| UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' expr_list ')'
5811
	  {
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            $$= new Item_func_unique_users($3,atoi($5.str),atoi($7.str), * $9);
	  }
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	| UNIX_TIMESTAMP '(' ')'
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	  {
	    $$= new Item_func_unix_timestamp();
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	    Lex->safe_to_cache_query=0;
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	  }
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	| UNIX_TIMESTAMP '(' expr ')'
	  { $$= new Item_func_unix_timestamp($3); }
	| USER '(' ')'
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	  { $$= new Item_func_user(FALSE); Lex->safe_to_cache_query=0; }
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	| UTC_DATE_SYM optional_braces
	  { $$= new Item_func_curdate_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIME_SYM optional_braces
	  { $$= new Item_func_curtime_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIMESTAMP_SYM optional_braces
	  { $$= new Item_func_now_utc(); Lex->safe_to_cache_query=0;}
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	| WEEK_SYM '(' expr ')'
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	  {
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            $$= new Item_func_week($3,new Item_int((char*) "0",
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				   YYTHD->variables.default_week_format,1));
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          }
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	| WEEK_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_week($3,$5); }
	| YEAR_SYM '(' expr ')'
	  { $$= new Item_func_year($3); }
	| YEARWEEK '(' expr ')'
	  { $$= new Item_func_yearweek($3,new Item_int((char*) "0",0,1)); }
	| YEARWEEK '(' expr ',' expr ')'
	  { $$= new Item_func_yearweek($3, $5); }
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	| BENCHMARK_SYM '(' ulong_num ',' expr ')'
5843
	  {
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	    $$=new Item_func_benchmark($3,$5);
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	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	| EXTRACT_SYM '(' interval FROM expr ')'
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	{ $$=new Item_extract( $3, $5); };
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geometry_function:
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	  CONTAINS_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_spatial_rel($3, $5, Item_func::SP_CONTAINS_FUNC)); }
	| GEOMFROMTEXT '(' expr ')'
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	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| GEOMFROMWKB '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3)); }
	| GEOMFROMWKB '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3, $5)); }
	| GEOMETRYCOLLECTION '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                           Geometry::wkb_geometrycollection,
                           Geometry::wkb_point)); }
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	| LINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_linestring, Geometry::wkb_point)); }
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 	| MULTILINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW( Item_func_spatial_collection(* $3,
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                   Geometry::wkb_multilinestring, Geometry::wkb_linestring)); }
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 	| MLINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MLINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MULTIPOINT '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipoint, Geometry::wkb_point)); }
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 	| MULTIPOLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipolygon, Geometry::wkb_polygon)); }
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	| POINT_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_point($3,$5)); }
 	| POINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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	          Geometry::wkb_polygon, Geometry::wkb_linestring)); }
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 	| GEOMCOLLFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMCOLLFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
 	| LINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| LINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	;

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fulltext_options:
        /* nothing */                   { $$= FT_NL;  }
        | WITH QUERY_SYM EXPANSION_SYM  { $$= FT_NL | FT_EXPAND; }
        | IN_SYM BOOLEAN_SYM MODE_SYM   { $$= FT_BOOL; }
        ;

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udf_expr_list:
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	/* empty */	 { $$= NULL; }
	| udf_expr_list2 { $$= $1;}
	;

udf_expr_list2:
	{ Select->expr_list.push_front(new List<Item>); }
	udf_expr_list3
	{ $$= Select->expr_list.pop(); }
	;

udf_expr_list3:
	udf_expr 
	  {
	    Select->expr_list.head()->push_back($1);
	  }
	| udf_expr_list3 ',' udf_expr 
	  {
	    Select->expr_list.head()->push_back($3);
	  }
	;

udf_expr:
	remember_name expr remember_end select_alias
	{
	  if ($4.str)
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          {
	    $2->set_name($4.str, $4.length, system_charset_info);
            $2->is_autogenerated_name= FALSE;
          }
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	  else
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	    $2->set_name($1, (uint) ($3 - $1), YYTHD->charset());
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	  $$= $2;
	}
	;
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sum_expr:
	AVG_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_avg($3); }
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	| AVG_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_avg_distinct($4); }
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	| BIT_AND  '(' in_sum_expr ')'
	  { $$=new Item_sum_and($3); }
	| BIT_OR  '(' in_sum_expr ')'
	  { $$=new Item_sum_or($3); }
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	| BIT_XOR  '(' in_sum_expr ')'
	  { $$=new Item_sum_xor($3); }
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	| COUNT_SYM '(' opt_all '*' ')'
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	  { $$=new Item_sum_count(new Item_int((int32) 0L,1)); }
	| COUNT_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_count($3); }
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	| COUNT_SYM '(' DISTINCT
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	  { Select->in_sum_expr++; }
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	   expr_list
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	  { Select->in_sum_expr--; }
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	  ')'
	  { $$=new Item_sum_count_distinct(* $5); }
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	| GROUP_UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' in_sum_expr ')'
	  { $$= new Item_sum_unique_users($3,atoi($5.str),atoi($7.str),$9); }
	| MIN_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_min($3); }
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/*
   According to ANSI SQL, DISTINCT is allowed and has
   no sence inside MIN and MAX grouping functions; so MIN|MAX(DISTINCT ...)
   is processed like an ordinary MIN | MAX()
 */
	| MIN_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_min($4); }
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	| MAX_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_max($3); }
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	| MAX_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_max($4); }
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	| STD_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_std($3, 0); }
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	| VARIANCE_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_variance($3, 0); }
	| STDDEV_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_std($3, 1); }
	| VAR_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_variance($3, 1); }
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	| SUM_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_sum($3); }
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	| SUM_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_sum_distinct($4); }
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	| GROUP_CONCAT_SYM '(' opt_distinct
	  { Select->in_sum_expr++; }
	  expr_list opt_gorder_clause
	  opt_gconcat_separator
	 ')'
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	  {
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            SELECT_LEX *sel= Select;
	    sel->in_sum_expr--;
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	    $$=new Item_func_group_concat(Lex->current_context(), $3, $5,
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                                          sel->gorder_list, $7);
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	    $5->empty();
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	  };

opt_distinct:
    /* empty */ { $$ = 0; }
    |DISTINCT   { $$ = 1; };

opt_gconcat_separator:
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    /* empty */        { $$ = new (YYTHD->mem_root) String(",",1,default_charset_info); }
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    |SEPARATOR_SYM text_string  { $$ = $2; };
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opt_gorder_clause:
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	  /* empty */
	  {
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            Select->gorder_list = NULL;
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	  }
	| order_clause
          {
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            SELECT_LEX *select= Select;
            select->gorder_list=
	      (SQL_LIST*) sql_memdup((char*) &select->order_list,
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				     sizeof(st_sql_list));
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	    select->order_list.empty();
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	  };
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in_sum_expr:
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	opt_all
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	{
	  LEX *lex= Lex;
	  if (lex->current_select->inc_in_sum_expr())
	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
6046
	    YYABORT;
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	  }
	}
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	expr
	{
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	  Select->in_sum_expr--;
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	  $$= $3;
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	};
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cast_type:
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        BINARY opt_len		{ $$=ITEM_CAST_CHAR; Lex->charset= &my_charset_bin; Lex->dec= 0; }
        | CHAR_SYM opt_len opt_binary	{ $$=ITEM_CAST_CHAR; Lex->dec= 0; }
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	| NCHAR_SYM opt_len	{ $$=ITEM_CAST_CHAR; Lex->charset= national_charset_info; Lex->dec=0; }
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        | SIGNED_SYM		{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | SIGNED_SYM INT_SYM	{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED		{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED INT_SYM	{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATE_SYM		{ $$=ITEM_CAST_DATE; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | TIME_SYM		{ $$=ITEM_CAST_TIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATETIME		{ $$=ITEM_CAST_DATETIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DECIMAL_SYM float_options { $$=ITEM_CAST_DECIMAL; Lex->charset= NULL; }
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	;

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expr_list:
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	{ Select->expr_list.push_front(new List<Item>); }
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	expr_list2
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	{ $$= Select->expr_list.pop(); };
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expr_list2:
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	expr { Select->expr_list.head()->push_back($1); }
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	| expr_list2 ',' expr { Select->expr_list.head()->push_back($3); };
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ident_list_arg:
          ident_list          { $$= $1; }
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        | '(' ident_list ')'  { $$= $2; };
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ident_list:
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        { Select->expr_list.push_front(new List<Item>); }
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        ident_list2
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        { $$= Select->expr_list.pop(); };
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ident_list2:
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        simple_ident { Select->expr_list.head()->push_back($1); }
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        | ident_list2 ',' simple_ident { Select->expr_list.head()->push_back($3); };
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opt_expr:
	/* empty */      { $$= NULL; }
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	| expr           { $$= $1; };
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opt_else:
	/* empty */    { $$= NULL; }
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	| ELSE expr    { $$= $2; };
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when_list:
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        { Select->when_list.push_front(new List<Item>); }
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	when_list2
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	{ $$= Select->when_list.pop(); };
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when_list2:
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	expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($1);
	    sel->when_list.head()->push_back($3);
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	}
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	| when_list2 WHEN_SYM expr THEN_SYM expr
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	  {
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	    SELECT_LEX *sel=Select;
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	    sel->when_list.head()->push_back($3);
	    sel->when_list.head()->push_back($5);
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	  };
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/* Warning - may return NULL in case of incomplete SELECT */
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table_ref:
        table_factor            { $$=$1; }
        | join_table            { $$=$1; }
6122
          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->nest_last_join(lex->thd)))
              YYABORT;
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          }
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        ;

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join_table_list:
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	derived_table_list		{ YYERROR_UNLESS($$=$1); }
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	;
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/* Warning - may return NULL in case of incomplete SELECT */
derived_table_list:
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        table_ref { $$=$1; }
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        | derived_table_list ',' table_ref
          {
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            YYERROR_UNLESS($1 && ($$=$3));
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          }
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        ;

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/*
  Notice that JOIN is a left-associative operation, and it must be parsed
  as such, that is, the parser must process first the left join operand
  then the right one. Such order of processing ensures that the parser
  produces correct join trees which is essential for semantic analysis
  and subsequent optimization phases.
*/
6149
join_table:
6150
/* INNER JOIN variants */
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        /*
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          Use %prec to evaluate production 'table_ref' before 'normal_join'
          so that [INNER | CROSS] JOIN is properly nested as other
          left-associative joins.
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        */
        table_ref %prec TABLE_REF_PRIORITY normal_join table_ref
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          { YYERROR_UNLESS($1 && ($$=$3)); }
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	| table_ref STRAIGHT_JOIN table_factor
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	  { YYERROR_UNLESS($1 && ($$=$3)); $3->straight=1; }
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	| table_ref normal_join table_ref
          ON
          {
            YYERROR_UNLESS($1 && ($$=$3));
            /* Change the current name resolution context to a local context. */
            Name_resolution_context *on_context;
            if (!(on_context= make_join_on_context(YYTHD,$1,$3)))
              YYABORT;
            Lex->push_context(on_context);
          }
          expr
	  {
            add_join_on($3,$6);
            Lex->pop_context();
          }
        | table_ref STRAIGHT_JOIN table_factor
          ON
          {
            YYERROR_UNLESS($1 && ($$=$3));
            /* Change the current name resolution context to a local context. */
            Name_resolution_context *on_context;
            if (!(on_context= make_join_on_context(YYTHD,$1,$3)))
              YYABORT;
            Lex->push_context(on_context);
          }
          expr
          {
            $3->straight=1;
            add_join_on($3,$6);
            Lex->pop_context();
          }
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	| table_ref normal_join table_ref
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	  USING
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	  {
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	    SELECT_LEX *sel= Select;
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            YYERROR_UNLESS($1 && $3);
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	  }
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	  '(' using_list ')'
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          { add_join_natural($1,$3,$7); $$=$3; }
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	| table_ref NATURAL JOIN_SYM table_factor
	  {
            YYERROR_UNLESS($1 && ($$=$4));
            add_join_natural($1,$4,NULL);
          }

/* LEFT JOIN variants */
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	| table_ref LEFT opt_outer JOIN_SYM table_ref
          ON
          {
            /* Change the current name resolution context to a local context. */
            Name_resolution_context *on_context;
            if (!(on_context= make_join_on_context(YYTHD,$1,$5)))
              YYABORT;
            Lex->push_context(on_context);
          }
          expr
	  {
            YYERROR_UNLESS($1 && $5);
            add_join_on($5,$8);
            Lex->pop_context();
            $5->outer_join|=JOIN_TYPE_LEFT;
            $$=$5;
          }
6223
	| table_ref LEFT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            YYERROR_UNLESS($1 && $5);
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	  }
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	  USING '(' using_list ')'
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          { add_join_natural($1,$5,$9); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
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	| table_ref NATURAL LEFT opt_outer JOIN_SYM table_factor
6231
	  {
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            YYERROR_UNLESS($1 && $6);
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 	    add_join_natural($1,$6,NULL);
6234
	    $6->outer_join|=JOIN_TYPE_LEFT;
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	    $$=$6;
	  }
6237 6238

/* RIGHT JOIN variants */
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	| table_ref RIGHT opt_outer JOIN_SYM table_ref
          ON
          {
            /* Change the current name resolution context to a local context. */
            Name_resolution_context *on_context;
            if (!(on_context= make_join_on_context(YYTHD,$1,$5)))
              YYABORT;
            Lex->push_context(on_context);
          }
          expr
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          {
6250
	    LEX *lex= Lex;
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            YYERROR_UNLESS($1 && $5);
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            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
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            add_join_on($$, $8);
            Lex->pop_context();
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          }
	| table_ref RIGHT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            YYERROR_UNLESS($1 && $5);
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	  }
6262
	  USING '(' using_list ')'
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          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
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            add_join_natural($$,$5,$9);
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          }
	| table_ref NATURAL RIGHT opt_outer JOIN_SYM table_factor
6270
	  {
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            YYERROR_UNLESS($1 && $6);
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	    add_join_natural($6,$1,NULL);
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
6276
	  };
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normal_join:
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	JOIN_SYM		{}
	| INNER_SYM JOIN_SYM	{}
	| CROSS JOIN_SYM	{}
	;
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/* Warning - may return NULL in case of incomplete SELECT */
6285
table_factor:
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	{
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	  SELECT_LEX *sel= Select;
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	  sel->use_index_ptr=sel->ignore_index_ptr=0;
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	  sel->table_join_options= 0;
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	}
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        table_ident opt_table_alias opt_key_definition
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	{
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	  LEX *lex= Lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (!($$= sel->add_table_to_list(lex->thd, $2, $3,
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					   sel->get_table_join_options(),
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					   lex->lock_option,
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					   sel->get_use_index(),
					   sel->get_ignore_index())))
6300
	    YYABORT;
6301
          sel->add_joined_table($$);
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	}
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	| '{' ident table_ref LEFT OUTER JOIN_SYM table_ref
          ON
          {
            /* Change the current name resolution context to a local context. */
            Name_resolution_context *on_context;
            if (!(on_context= make_join_on_context(YYTHD,$3,$7)))
              YYABORT;
            Lex->push_context(on_context);
          }
          expr '}'
	  {
            YYERROR_UNLESS($3 && $7);
            add_join_on($7,$10);
            Lex->pop_context();
            $7->outer_join|=JOIN_TYPE_LEFT;
            $$=$7;
          }
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	| select_derived_init get_select_lex select_derived2
6321
          {
6322
            LEX *lex= Lex;
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            SELECT_LEX *sel= lex->current_select;
            if ($1)
            {
	      if (sel->set_braces(1))
	      {
	        yyerror(ER(ER_SYNTAX_ERROR));
	        YYABORT;
	      }
              /* select in braces, can't contain global parameters */
	      if (sel->master_unit()->fake_select_lex)
                sel->master_unit()->global_parameters=
                   sel->master_unit()->fake_select_lex;
            }
            if ($2->init_nested_join(lex->thd))
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              YYABORT;
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            $$= 0;
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            /* incomplete derived tables return NULL, we must be
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               nested in select_derived rule to be here. */
6341
          }
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	| '(' get_select_lex select_derived union_opt ')' opt_table_alias
	{
          /* Use $2 instead of Lex->current_select as derived table will
             alter value of Lex->current_select. */

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          if (!($3 || $6) && $2->embedding &&
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              !$2->embedding->nested_join->join_list.elements)
6349
          {
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            /* we have a derived table ($3 == NULL) but no alias,
               Since we are nested in further parentheses so we
               can pass NULL to the outer level parentheses
               Permits parsing of "((((select ...))) as xyz)" */
            $$= 0;
6355
          }
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          else
          if (!$3)
          {
            /* Handle case of derived table, alias may be NULL if there
               are no outer parentheses, add_table_to_list() will throw
               error in this case */
	    LEX *lex=Lex;
            SELECT_LEX *sel= lex->current_select;
	    SELECT_LEX_UNIT *unit= sel->master_unit();
	    lex->current_select= sel= unit->outer_select();
	    if (!($$= sel->
                  add_table_to_list(lex->thd, new Table_ident(unit), $6, 0,
				    TL_READ,(List<String> *)0,
	                            (List<String> *)0)))
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	      YYABORT;
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            sel->add_joined_table($$);
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            lex->pop_context();
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          }
	  else
          if ($4 || $6)
	  {
            /* simple nested joins cannot have aliases or unions */
            yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
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	  }
          else
            $$= $3;
	}
        ;
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/* handle contents of parentheses in join expression */
6388
select_derived:
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	  get_select_lex
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	  {
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            LEX *lex= Lex;
            if ($1->init_nested_join(lex->thd))
              YYABORT;
          }
          derived_table_list
          {
            LEX *lex= Lex;
            /* for normal joins, $3 != NULL and end_nested_join() != NULL,
               for derived tables, both must equal NULL */
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            if (!($$= $1->end_nested_join(lex->thd)) && $3)
              YYABORT;
            if (!$3 && $$)
            {
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	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
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            }
          }
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 	;
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select_derived2:
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        {
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	  LEX *lex= Lex;
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	  lex->derived_tables|= DERIVED_SUBQUERY;
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	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
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	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
6422
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE ||
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              mysql_new_select(lex, 1))
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	    YYABORT;
	  mysql_init_select(lex);
6426
	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
6427
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
        select_options select_item_list
	{
6431
	  Select->parsing_place= NO_MATTER;
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	}
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	opt_select_from
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        ;
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get_select_lex:
	/* Empty */ { $$= Select; }
        ;

select_derived_init:
          SELECT_SYM
          {
            LEX *lex= Lex;
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            SELECT_LEX *sel= lex->current_select;
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            TABLE_LIST *embedding;
            if (!sel->embedding || sel->end_nested_join(lex->thd))
	    {
              /* we are not in parentheses */
              yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
            embedding= Select->embedding;
            $$= embedding &&
                !embedding->nested_join->join_list.elements;
            /* return true if we are deeply nested */
          }
        ;

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opt_outer:
	/* empty */	{}
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	| OUTER		{};
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opt_key_definition:
	/* empty */	{}
	| USE_SYM    key_usage_list
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          {
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	    SELECT_LEX *sel= Select;
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	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	| FORCE_SYM key_usage_list
          {
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	    SELECT_LEX *sel= Select;
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	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	    sel->table_join_options|= TL_OPTION_FORCE_INDEX;
	  }
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	| IGNORE_SYM key_usage_list
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->ignore_index= *$2;
	    sel->ignore_index_ptr= &sel->ignore_index;
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	  };
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key_usage_list:
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	key_or_index { Select->interval_list.empty(); }
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        '(' key_list_or_empty ')'
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        { $$= &Select->interval_list; }
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	;

key_list_or_empty:
	/* empty */ 		{}
	| key_usage_list2	{}
	;
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key_usage_list2:
	key_usage_list2 ',' ident
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $3.str, $3.length,
6500
				    system_charset_info)); }
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	| ident
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $1.str, $1.length,
6504
				    system_charset_info)); }
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	| PRIMARY_SYM
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        { Select->
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	    interval_list.push_back(new (YYTHD->mem_root) String("PRIMARY", 7,
6508
				    system_charset_info)); };
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using_list:
	ident
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	  {
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            if (!($$= new List<String>))
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	      YYABORT;
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            $$->push_back(new (YYTHD->mem_root)
                              String((const char *) $1.str, $1.length,
                                      system_charset_info));
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	  }
	| using_list ',' ident
	  {
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            $1->push_back(new (YYTHD->mem_root)
                              String((const char *) $3.str, $3.length,
                                      system_charset_info));
            $$= $1;
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	  };
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interval:
6528 6529
	interval_time_st	{}
	| DAY_HOUR_SYM		{ $$=INTERVAL_DAY_HOUR; }
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	| DAY_MICROSECOND_SYM	{ $$=INTERVAL_DAY_MICROSECOND; }
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	| DAY_MINUTE_SYM	{ $$=INTERVAL_DAY_MINUTE; }
	| DAY_SECOND_SYM	{ $$=INTERVAL_DAY_SECOND; }
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	| HOUR_MICROSECOND_SYM	{ $$=INTERVAL_HOUR_MICROSECOND; }
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	| HOUR_MINUTE_SYM	{ $$=INTERVAL_HOUR_MINUTE; }
	| HOUR_SECOND_SYM	{ $$=INTERVAL_HOUR_SECOND; }
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	| MICROSECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
	| MINUTE_MICROSECOND_SYM	{ $$=INTERVAL_MINUTE_MICROSECOND; }
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	| MINUTE_SECOND_SYM	{ $$=INTERVAL_MINUTE_SECOND; }
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	| SECOND_MICROSECOND_SYM	{ $$=INTERVAL_SECOND_MICROSECOND; }
	| YEAR_MONTH_SYM	{ $$=INTERVAL_YEAR_MONTH; };

interval_time_st:
	DAY_SYM			{ $$=INTERVAL_DAY; }
	| WEEK_SYM		{ $$=INTERVAL_WEEK; }
	| HOUR_SYM		{ $$=INTERVAL_HOUR; }
	| FRAC_SECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
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	| MINUTE_SYM		{ $$=INTERVAL_MINUTE; }
	| MONTH_SYM		{ $$=INTERVAL_MONTH; }
6549
	| QUARTER_SYM		{ $$=INTERVAL_QUARTER; }
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	| SECOND_SYM		{ $$=INTERVAL_SECOND; }
6551 6552
	| YEAR_SYM		{ $$=INTERVAL_YEAR; }
        ;
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6554
date_time_type:
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          DATE_SYM              {$$=MYSQL_TIMESTAMP_DATE;}
        | TIME_SYM              {$$=MYSQL_TIMESTAMP_TIME;}
        | DATETIME              {$$=MYSQL_TIMESTAMP_DATETIME;}
        | TIMESTAMP             {$$=MYSQL_TIMESTAMP_DATETIME;}
        ;
6560

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table_alias:
	/* empty */
	| AS
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	| EQ;
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opt_table_alias:
	/* empty */		{ $$=0; }
	| table_alias ident
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	  { $$= (LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING)); };
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opt_all:
	/* empty */
	| ALL
	;
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where_clause:
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	/* empty */  { Select->where= 0; }
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	| WHERE
          {
            Select->parsing_place= IN_WHERE;
          }
          expr
6583
	  {
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            SELECT_LEX *select= Select;
	    select->where= $3;
            select->parsing_place= NO_MATTER;
	    if ($3)
	      $3->top_level_item();
6589
	  }
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 	;
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having_clause:
	/* empty */
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	| HAVING
	  {
6596
	    Select->parsing_place= IN_HAVING;
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          }
	  expr
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->having= $3;
6602
	    sel->parsing_place= NO_MATTER;
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	    if ($3)
	      $3->top_level_item();
	  }
6606
	;
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opt_escape:
6609 6610 6611 6612 6613
	ESCAPE_SYM simple_expr 
          {
            Lex->escape_used= TRUE;
            $$= $2;
          }
6614
	| /* empty */
6615
          {
6616
            Lex->escape_used= FALSE;
6617 6618 6619
            $$= ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ?
		 new Item_string("", 0, &my_charset_latin1) :
                 new Item_string("\\", 1, &my_charset_latin1));
6620 6621
          }
        ;
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/*
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   group by statement in select
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*/

group_clause:
	/* empty */
6630
	| GROUP BY group_list olap_opt;
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group_list:
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	group_list ',' order_ident order_dir
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	  { if (add_group_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
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	| order_ident order_dir
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	  { if (add_group_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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6638 6639
olap_opt:
	/* empty */ {}
6640
	| WITH CUBE_SYM
6641
          {
6642
	    LEX *lex=Lex;
6643 6644
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH CUBE",
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		       "global union parameters");
	      YYABORT;
	    }
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	    lex->current_select->olap= CUBE_TYPE;
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	    my_error(ER_NOT_SUPPORTED_YET, MYF(0), "CUBE");
6651
	    YYABORT;	/* To be deleted in 5.1 */
6652
	  }
6653
	| WITH ROLLUP_SYM
6654
          {
6655 6656 6657
	    LEX *lex= Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH ROLLUP",
6659 6660 6661
		       "global union parameters");
	      YYABORT;
	    }
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	    lex->current_select->olap= ROLLUP_TYPE;
6663
	  }
6664
	;
6665

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/*
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   Order by statement in select
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*/

6670
opt_order_clause:
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	/* empty */
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	| order_clause;
6673 6674

order_clause:
6675 6676
	ORDER_SYM BY
        {
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	  LEX *lex=Lex;
6678
	  if (lex->current_select->linkage != GLOBAL_OPTIONS_TYPE &&
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	      lex->current_select->olap !=
6680
	      UNSPECIFIED_OLAP_TYPE)
6681
	  {
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	    my_error(ER_WRONG_USAGE, MYF(0),
                     "CUBE/ROLLUP", "ORDER BY");
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	    YYABORT;
	  }
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	} order_list;
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order_list:
	order_list ',' order_ident order_dir
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	  { if (add_order_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
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	| order_ident order_dir
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	  { if (add_order_to_list(YYTHD, $1,(bool) $2)) YYABORT; };
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order_dir:
	/* empty */ { $$ =  1; }
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	| ASC  { $$ =1; }
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	| DESC { $$ =0; };
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6700 6701 6702
opt_limit_clause_init:
	/* empty */
	{
6703 6704
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
6705 6706
          sel->offset_limit= 0;
          sel->select_limit= 0;
6707
	}
6708 6709 6710
	| limit_clause {}
	;

6711 6712 6713 6714 6715
opt_limit_clause:
	/* empty */	{}
	| limit_clause	{}
	;

6716
limit_clause:
6717
	LIMIT limit_options {}
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	;
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limit_options:
6721
	limit_option
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	  {
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            SELECT_LEX *sel= Select;
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            sel->select_limit= $1;
6725
            sel->offset_limit= 0;
6726
	    sel->explicit_limit= 1;
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	  }
6728
	| limit_option ',' limit_option
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $3;
	    sel->offset_limit= $1;
6733
	    sel->explicit_limit= 1;
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	  }
6735
	| limit_option OFFSET_SYM limit_option
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $1;
	    sel->offset_limit= $3;
6740
	    sel->explicit_limit= 1;
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	  }
	;
6743 6744 6745 6746 6747
limit_option:
        param_marker
        | ULONGLONG_NUM { $$= new Item_uint($1.str, $1.length); }
        | LONG_NUM     { $$= new Item_uint($1.str, $1.length); }
        | NUM           { $$= new Item_uint($1.str, $1.length); }
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        ;
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delete_limit_clause:
	/* empty */
	{
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	  LEX *lex=Lex;
6754
	  lex->current_select->select_limit= 0;
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	}
6756
	| LIMIT limit_option
6757 6758
	{
	  SELECT_LEX *sel= Select;
6759
	  sel->select_limit= $2;
6760 6761
	  sel->explicit_limit= 1;
	};
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ulong_num:
          NUM           { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
6765
	| HEX_NUM       { $$= (ulong) strtol($1.str, (char**) 0, 16); }
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	| LONG_NUM      { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM   { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM	{ int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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ulonglong_num:
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	NUM	    { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| LONG_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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procedure_clause:
	/* empty */
	| PROCEDURE ident			/* Procedure name */
	  {
	    LEX *lex=Lex;
6785 6786
	    if (&lex->select_lex != lex->current_select)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "PROCEDURE", "subquery");
6788 6789
	      YYABORT;
	    }
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	    lex->proc_list.elements=0;
	    lex->proc_list.first=0;
	    lex->proc_list.next= (byte**) &lex->proc_list.first;
6793 6794 6795 6796
	    if (add_proc_to_list(lex->thd, new Item_field(&lex->
                                                          current_select->
                                                          context,
                                                          NULL,NULL,$2.str)))
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	      YYABORT;
6798
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	  '(' procedure_list ')';
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procedure_list:
	/* empty */ {}
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	| procedure_list2 {};
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procedure_list2:
	procedure_list2 ',' procedure_item
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	| procedure_item;
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procedure_item:
	  remember_name expr
	  {
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	    LEX *lex= Lex;
	    if (add_proc_to_list(lex->thd, $2))
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	      YYABORT;
	    if (!$2->name)
6818 6819
	      $2->set_name($1,(uint) ((char*) lex->tok_end - $1),
                           YYTHD->charset());
6820 6821 6822 6823 6824 6825
	  }
          ;


select_var_list_init:
	   {
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             LEX *lex=Lex;
	     if (!lex->describe && (!(lex->result= new select_dumpvar())))
6828 6829
	        YYABORT;
	   }
6830
	   select_var_list
6831
	   {}
6832
           ;
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select_var_list:
6835 6836 6837 6838
	   select_var_list ',' select_var_ident
	   | select_var_ident {}
           ;

6839 6840 6841 6842 6843 6844 6845 6846 6847 6848
select_var_ident:  
	   '@' ident_or_text
           {
             LEX *lex=Lex;
	     if (lex->result) 
	       ((select_dumpvar *)lex->result)->var_list.push_back( new my_var($2,0,0,(enum_field_types)0));
	     else
	       YYABORT;
	   }
           | ident_or_text
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           {
6850
             LEX *lex=Lex;
6851 6852 6853 6854
	     sp_pvar_t *t;

	     if (!lex->spcont || !(t=lex->spcont->find_pvar(&$1)))
	     {
6855
	       my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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	       YYABORT;
6857 6858 6859 6860 6861
	     }
	     if (! lex->result)
	       YYABORT;
	     else
	     {
6862 6863 6864
               my_var *var;
	       ((select_dumpvar *)lex->result)->
                 var_list.push_back(var= new my_var($1,1,t->offset,t->type));
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#ifndef DBUG_OFF
6866 6867 6868
	       if (var)
		 var->owner= lex->sphead;
#endif
6869
	     }
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	   }
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           ;
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6873
into:
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        INTO OUTFILE TEXT_STRING_sys
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	{
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          LEX *lex= Lex;
6877 6878 6879 6880
          lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
          if (!(lex->exchange= new sql_exchange($3.str, 0)) ||
              !(lex->result= new select_export(lex->exchange)))
            YYABORT;
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	}
	opt_field_term opt_line_term
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	| INTO DUMPFILE TEXT_STRING_sys
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6884
	{
6885
	  LEX *lex=Lex;
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	  if (!lex->describe)
	  {
6888
	    lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	    if (!(lex->exchange= new sql_exchange($3.str,1)))
	      YYABORT;
	    if (!(lex->result= new select_dump(lex->exchange)))
	      YYABORT;
	  }
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	}
6895
        | INTO select_var_list_init
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6896
	{
6897
	  Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
6898 6899
	}
        ;
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6900

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/*
  DO statement
*/
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6904

6905
do:	DO_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DO;
6909 6910 6911 6912 6913
	  mysql_init_select(lex);
	}
	expr_list
	{
	  Lex->insert_list= $3;
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	}
6915 6916
	;

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/*
6918
  Drop : delete tables or index or user
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*/

drop:
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	DROP opt_temporary table_or_tables if_exists table_list opt_restrict
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	{
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	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DROP_TABLE;
6926 6927
	  lex->drop_temporary= $2;
	  lex->drop_if_exists= $4;
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	}
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	| DROP INDEX_SYM ident ON table_ident {}
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	  {
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	     LEX *lex=Lex;
	     lex->sql_command= SQLCOM_DROP_INDEX;
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	     lex->alter_info.drop_list.empty();
	     lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
                                                                $3.str));
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	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,
							TL_OPTION_UPDATING))
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	      YYABORT;
	  }
	| DROP DATABASE if_exists ident
	  {
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	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_DROP_DB;
	    lex->drop_if_exists=$3;
	    lex->name=$4.str;
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	 }
6947
	| DROP FUNCTION_SYM if_exists sp_name
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	  {
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	    LEX *lex=Lex;
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	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
6953 6954
	      YYABORT;
	    }
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	    lex->sql_command = SQLCOM_DROP_FUNCTION;
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	    lex->drop_if_exists= $3;
	    lex->spname= $4;
	  }
	| DROP PROCEDURE if_exists sp_name
	  {
	    LEX *lex=Lex;
	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
6965 6966 6967 6968 6969
	      YYABORT;
	    }
	    lex->sql_command = SQLCOM_DROP_PROCEDURE;
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
6970
	  }
6971
	| DROP USER clear_privileges user_list
6972
	  {
6973 6974
	    Lex->sql_command = SQLCOM_DROP_USER;
          }
6975 6976
	| DROP VIEW_SYM if_exists table_list opt_restrict
	  {
6977
	    LEX *lex= Lex;
6978 6979 6980
	    lex->sql_command= SQLCOM_DROP_VIEW;
	    lex->drop_if_exists= $3;
	  }
6981
        | DROP TRIGGER_SYM sp_name
6982 6983 6984
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_DROP_TRIGGER;
6985
            lex->spname= $3;
6986
          }
6987 6988 6989 6990 6991 6992 6993
        | DROP EVENT_SYM if_exists sp_name
          {
            LEX *lex=Lex;

            if (lex->et)
            {
              // ToDo Andrey : Change the error message
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              /*
                Recursive events are not possible because recursive SPs
                are not also possible. lex->sp_head is not stacked.
              */
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              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "EVENT");
              YYABORT;
            }

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            if (!(lex->et= new event_timed()))
              YYABORT;
            lex->et->init_name(YYTHD, $4);
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            lex->sql_command = SQLCOM_DROP_EVENT;
            lex->drop_if_exists= $3;
          }
      ;
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table_list:
7012
	table_name
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	| table_list ',' table_name;
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7015
table_name:
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	table_ident
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	{
	  if (!Select->add_table_to_list(YYTHD, $1, NULL, TL_OPTION_UPDATING))
	    YYABORT;
	}
	;
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if_exists:
7024
	/* empty */ { $$= 0; }
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	| IF EXISTS { $$= 1; }
	;
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opt_temporary:
	/* empty */ { $$= 0; }
	| TEMPORARY { $$= 1; }
	;
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/*
** Insert : add new data to table
*/

insert:
7037 7038 7039
	INSERT
	{
	  LEX *lex= Lex;
7040 7041
	  lex->sql_command= SQLCOM_INSERT;
	  lex->duplicates= DUP_ERROR; 
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	  mysql_init_select(lex);
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	  /* for subselects */
          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
	} insert_lock_option
7046
	opt_ignore insert2
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	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
7051
	insert_field_spec opt_insert_update
7052
	{}
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	;
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replace:
7056 7057
	REPLACE
	{
7058
	  LEX *lex=Lex;
7059 7060
	  lex->sql_command = SQLCOM_REPLACE;
	  lex->duplicates= DUP_REPLACE;
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	  mysql_init_select(lex);
7062
	}
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	replace_lock_option insert2
	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
	insert_field_spec
7069
	{}
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	;
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insert_lock_option:
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	/* empty */	{ $$= TL_WRITE_CONCURRENT_INSERT; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; }
	| DELAYED_SYM	{ $$= TL_WRITE_DELAYED; }
	| HIGH_PRIORITY { $$= TL_WRITE; }
7077
	;
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replace_lock_option:
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	opt_low_priority { $$= $1; }
	| DELAYED_SYM	 { $$= TL_WRITE_DELAYED; };
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insert2:
	INTO insert_table {}
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	| insert_table {};
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insert_table:
7088
	table_name
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	{
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	  LEX *lex=Lex;
	  lex->field_list.empty();
	  lex->many_values.empty();
	  lex->insert_list=0;
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	};
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insert_field_spec:
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	insert_values {}
	| '(' ')' insert_values {}
	| '(' fields ')' insert_values {}
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	| SET
	  {
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	    LEX *lex=Lex;
	    if (!(lex->insert_list = new List_item) ||
		lex->many_values.push_back(lex->insert_list))
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	      YYABORT;
	   }
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	   ident_eq_list;
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fields:
	fields ',' insert_ident { Lex->field_list.push_back($3); }
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	| insert_ident		{ Lex->field_list.push_back($1); };
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insert_values:
	VALUES	values_list  {}
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	| VALUE_SYM values_list  {}
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	|     create_select     { Select->set_braces(0);} union_clause {}
	| '(' create_select ')' { Select->set_braces(1);} union_opt {}
7118
        ;
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values_list:
	values_list ','  no_braces
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	| no_braces;
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ident_eq_list:
	ident_eq_list ',' ident_eq_value
	|
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	ident_eq_value;
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ident_eq_value:
7130
	simple_ident_nospvar equal expr_or_default
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	 {
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	  LEX *lex=Lex;
	  if (lex->field_list.push_back($1) ||
	      lex->insert_list->push_back($3))
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	    YYABORT;
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	 };
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equal:	EQ		{}
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	| SET_VAR	{}
	;

opt_equal:
	/* empty */	{}
	| equal		{}
	;
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no_braces:
	 '('
	 {
	    if (!(Lex->insert_list = new List_item))
	      YYABORT;
	 }
	 opt_values ')'
	 {
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	  LEX *lex=Lex;
	  if (lex->many_values.push_back(lex->insert_list))
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	    YYABORT;
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	 };
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opt_values:
	/* empty */ {}
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	| values;
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values:
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	values ','  expr_or_default
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	{
	  if (Lex->insert_list->push_back($3))
	    YYABORT;
	}
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	| expr_or_default
	  {
	    if (Lex->insert_list->push_back($1))
	      YYABORT;
	  }
	;

expr_or_default:
7178
	expr	  { $$= $1;}
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	| DEFAULT {$$= new Item_default_value(Lex->current_context()); }
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	;
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7182 7183
opt_insert_update:
        /* empty */
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        | ON DUPLICATE_SYM	{ Lex->duplicates= DUP_UPDATE; }
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          KEY_SYM UPDATE_SYM insert_update_list
7186 7187
        ;

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/* Update rows in a table */

update:
7191 7192
	UPDATE_SYM
	{
7193
	  LEX *lex= Lex;
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	  mysql_init_select(lex);
7195
          lex->sql_command= SQLCOM_UPDATE;
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	  lex->lock_option= TL_UNLOCK; 	/* Will be set later */
7197
	  lex->duplicates= DUP_ERROR; 
7198
        }
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        opt_low_priority opt_ignore join_table_list
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	SET update_list
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	{
7202 7203
	  LEX *lex= Lex;
          if (lex->select_lex.table_list.elements > 1)
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            lex->sql_command= SQLCOM_UPDATE_MULTI;
7205 7206 7207
	  else if (lex->select_lex.get_table_list()->derived)
	  {
	    /* it is single table update and it is update of derived table */
7208 7209
	    my_error(ER_NON_UPDATABLE_TABLE, MYF(0),
                     lex->select_lex.get_table_list()->alias, "UPDATE");
7210 7211
	    YYABORT;
	  }
7212 7213 7214 7215 7216 7217
          /*
            In case of multi-update setting write lock for all tables may
            be too pessimistic. We will decrease lock level if possible in
            mysql_multi_update().
          */
          Select->set_lock_for_tables($3);
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	}
7219
	where_clause opt_order_clause delete_limit_clause {}
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	;
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update_list:
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	update_list ',' update_elem
	| update_elem;

update_elem:
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	simple_ident_nospvar equal expr_or_default
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7228
	{
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	  if (add_item_to_list(YYTHD, $1) || add_value_to_list(YYTHD, $3))
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	    YYABORT;
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	};

insert_update_list:
	insert_update_list ',' insert_update_elem
	| insert_update_elem;

insert_update_elem:
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	simple_ident_nospvar equal expr_or_default
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7239
	  {
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	  LEX *lex= Lex;
	  if (lex->update_list.push_back($1) || 
	      lex->value_list.push_back($3))
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	      YYABORT;
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	  };
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opt_low_priority:
7247
	/* empty */	{ $$= YYTHD->update_lock_default; }
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7248
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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/* Delete rows from a table */

delete:
7253
	DELETE_SYM
7254
	{
7255 7256
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_DELETE;
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7257
	  mysql_init_select(lex);
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7258
	  lex->lock_option= lex->thd->update_lock_default;
7259
	  lex->ignore= 0;
7260
	  lex->select_lex.init_order();
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7261
	}
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	opt_delete_options single_multi {}
	;
7264 7265

single_multi:
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 	FROM table_ident
	{
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	  if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
					 Lex->lock_option))
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7270 7271 7272
	    YYABORT;
	}
	where_clause opt_order_clause
7273
	delete_limit_clause {}
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	| table_wild_list
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7275
	  { mysql_init_multi_delete(Lex); }
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          FROM join_table_list where_clause
7277 7278 7279 7280
          { 
            if (multi_delete_set_locks_and_link_aux_tables(Lex))
              YYABORT;
          }
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	| FROM table_wild_list
	  { mysql_init_multi_delete(Lex); }
7283
	  USING join_table_list where_clause
7284 7285 7286 7287
          { 
            if (multi_delete_set_locks_and_link_aux_tables(Lex))
              YYABORT;
          }
7288
	;
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table_wild_list:
	  table_wild_one {}
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7292
	  | table_wild_list ',' table_wild_one {};
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table_wild_one:
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7295
	ident opt_wild opt_table_alias
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7296
	{
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	  if (!Select->add_table_to_list(YYTHD, new Table_ident($1), $3,
					 TL_OPTION_UPDATING, Lex->lock_option))
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7299 7300
	    YYABORT;
        }
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	| ident '.' ident opt_wild opt_table_alias
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7302
	  {
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7303 7304
	    if (!Select->add_table_to_list(YYTHD,
					   new Table_ident(YYTHD, $1, $3, 0),
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					   $5, TL_OPTION_UPDATING,
					   Lex->lock_option))
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7307
	      YYABORT;
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	  }
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7309
	;
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opt_wild:
7312
	/* empty */	{}
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	| '.' '*'	{};
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7316
opt_delete_options:
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7317
	/* empty */	{}
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	| opt_delete_option opt_delete_options {};
7319 7320

opt_delete_option:
7321
	QUICK		{ Select->options|= OPTION_QUICK; }
7322
	| LOW_PRIORITY	{ Lex->lock_option= TL_WRITE_LOW_PRIORITY; }
7323
	| IGNORE_SYM	{ Lex->ignore= 1; };
7324

7325
truncate:
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7326
	TRUNCATE_SYM opt_table_sym table_name
7327
	{
7328
	  LEX* lex= Lex;
7329
	  lex->sql_command= SQLCOM_TRUNCATE;
7330
	  lex->select_lex.options= 0;
7331
	  lex->select_lex.init_order();
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7332 7333
	}
	;
7334

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opt_table_sym:
	/* empty */
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7337
	| TABLE_SYM;
7338

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7339 7340
/* Show things */

7341 7342
show:	SHOW
	{
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7343 7344
	  LEX *lex=Lex;
	  lex->wild=0;
7345 7346 7347
          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	}
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	show_param
7351 7352
	{}
	;
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show_param:
7355
         DATABASES wild_and_where
7356 7357 7358 7359 7360 7361 7362
         {
           LEX *lex= Lex;
           lex->sql_command= SQLCOM_SELECT;
           lex->orig_sql_command= SQLCOM_SHOW_DATABASES;
           if (prepare_schema_table(YYTHD, lex, 0, SCH_SCHEMATA))
             YYABORT;
         }
7363
         | opt_full TABLES opt_db wild_and_where
7364 7365 7366 7367
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLES;
7368
             lex->select_lex.db= $3;
7369 7370 7371
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_NAMES))
               YYABORT;
           }
7372 7373 7374 7375 7376 7377 7378 7379 7380
         | opt_full TRIGGERS_SYM opt_db wild_and_where
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TRIGGERS;
             lex->select_lex.db= $3;
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TRIGGERS))
               YYABORT;
           }
7381
         | TABLE_SYM STATUS_SYM opt_db wild_and_where
7382 7383 7384 7385
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLE_STATUS;
7386
             lex->select_lex.db= $3;
7387 7388 7389
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLES))
               YYABORT;
           }
7390
        | OPEN_SYM TABLES opt_db wild_and_where
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7391
	  {
7392
	    LEX *lex= Lex;
7393 7394
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_OPEN_TABLES;
7395
	    lex->select_lex.db= $3;
7396 7397
            if (prepare_schema_table(YYTHD, lex, 0, SCH_OPEN_TABLES))
              YYABORT;
7398
	  }
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7399
	| ENGINE_SYM storage_engines 
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	  { Lex->create_info.db_type= $2; }
	  show_engine_param
7402 7403 7404
	| ENGINE_SYM ALL 
	  { Lex->create_info.db_type= DB_TYPE_DEFAULT; }
	  show_engine_param
7405
	| opt_full COLUMNS from_or_in table_ident opt_db wild_and_where
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7406
	  {
7407 7408 7409
 	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SELECT;
	    lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
7410 7411 7412
	    if ($5)
	      $4->change_db($5);
	    if (prepare_schema_table(YYTHD, lex, $4, SCH_COLUMNS))
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	      YYABORT;
	  }
7415
        | NEW_SYM MASTER_SYM FOR_SYM SLAVE WITH MASTER_LOG_FILE_SYM EQ
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	  TEXT_STRING_sys AND_SYM MASTER_LOG_POS_SYM EQ ulonglong_num
	  AND_SYM MASTER_SERVER_ID_SYM EQ
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	ulong_num
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          {
	    Lex->sql_command = SQLCOM_SHOW_NEW_MASTER;
	    Lex->mi.log_file_name = $8.str;
	    Lex->mi.pos = $12;
7423
	    Lex->mi.server_id = $16;
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7424
          }
7425
        | master_or_binary LOGS_SYM
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          {
	    Lex->sql_command = SQLCOM_SHOW_BINLOGS;
7428 7429 7430 7431 7432
          }
        | SLAVE HOSTS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_HOSTS;
          }
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        | BINLOG_SYM EVENTS_SYM binlog_in binlog_from
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          {
7435 7436
	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_BINLOG_EVENTS;
7437
          } opt_limit_clause_init
7438
        | keys_or_index from_or_in table_ident opt_db where_clause
7439 7440 7441 7442
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_KEYS;
7443 7444 7445
	    if ($4)
	      $3->change_db($4);
            if (prepare_schema_table(YYTHD, lex, $3, SCH_STATISTICS))
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              YYABORT;
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	  }
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	| COLUMN_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_COLUMN_TYPES;
	  }
	| TABLE_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
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	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
	    WARN_DEPRECATED("SHOW TABLE TYPES", "SHOW [STORAGE] ENGINES");
	  }
	| opt_storage ENGINES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
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	  }
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	| AUTHORS_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_AUTHORS;
	  }
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	| PRIVILEGES
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_PRIVILEGES;
	  }
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        | COUNT_SYM '(' '*' ')' WARNINGS
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          { (void) create_select_for_variable("warning_count"); }
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        | COUNT_SYM '(' '*' ')' ERRORS
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	  { (void) create_select_for_variable("error_count"); }
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        | WARNINGS opt_limit_clause_init
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          { Lex->sql_command = SQLCOM_SHOW_WARNS;}
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        | ERRORS opt_limit_clause_init
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          { Lex->sql_command = SQLCOM_SHOW_ERRORS;}
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        | opt_var_type STATUS_SYM wild_and_where
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          {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS;
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            lex->option_type= $1;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_STATUS))
              YYABORT;
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	  }	
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        | INNOBASE_SYM STATUS_SYM
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          {
            LEX *lex= Lex;
            lex->sql_command = SQLCOM_SHOW_ENGINE_STATUS;
            lex->create_info.db_type= DB_TYPE_INNODB;
            WARN_DEPRECATED("SHOW INNODB STATUS", "SHOW ENGINE INNODB STATUS");
	  }
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        | MUTEX_SYM STATUS_SYM
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          {
	    LEX *lex= Lex;
            lex->sql_command = SQLCOM_SHOW_ENGINE_MUTEX; 
            lex->create_info.db_type= DB_TYPE_INNODB;
            WARN_DEPRECATED("SHOW MUTEX STATUS", "SHOW ENGINE INNODB MUTEX");
	  }
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	| opt_full PROCESSLIST_SYM
	  { Lex->sql_command= SQLCOM_SHOW_PROCESSLIST;}
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        | opt_var_type  VARIABLES wild_and_where
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	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_VARIABLES;
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            lex->option_type= $1;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_VARIABLES))
              YYABORT;
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	  }
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        | charset wild_and_where
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_CHARSETS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_CHARSETS))
              YYABORT;
          }
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        | COLLATION_SYM wild_and_where
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_COLLATIONS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_COLLATIONS))
              YYABORT;
          }
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	| BERKELEY_DB_SYM LOGS_SYM
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	  {
	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_ENGINE_LOGS;
	    lex->create_info.db_type= DB_TYPE_BERKELEY_DB;
	    WARN_DEPRECATED("SHOW BDB LOGS", "SHOW ENGINE BDB LOGS");
	  }
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	| LOGS_SYM
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	  {
	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_ENGINE_LOGS;
	    lex->create_info.db_type= DB_TYPE_BERKELEY_DB;
	    WARN_DEPRECATED("SHOW LOGS", "SHOW ENGINE BDB LOGS");
	  }
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	| GRANTS
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    THD *thd= lex->thd;
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            Security_context *sctx= thd->security_ctx;
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	    LEX_USER *curr_user;
            if (!(curr_user= (LEX_USER*) thd->alloc(sizeof(st_lex_user))))
              YYABORT;
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            curr_user->user.str= sctx->priv_user;
            curr_user->user.length= strlen(sctx->priv_user);
            if (*sctx->priv_host != 0)
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            {
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              curr_user->host.str= sctx->priv_host;
              curr_user->host.length= strlen(sctx->priv_host);
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            }
            else
            {
              curr_user->host.str= (char *) "%";
              curr_user->host.length= 1;
            }
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            curr_user->password=null_lex_str;
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	    lex->grant_user= curr_user;
	  }
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	| GRANTS FOR_SYM user
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	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    lex->grant_user=$3;
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	    lex->grant_user->password=null_lex_str;
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	  }
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	| CREATE DATABASE opt_if_not_exists ident
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	  {
	    Lex->sql_command=SQLCOM_SHOW_CREATE_DB;
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	    Lex->create_info.options=$3;
	    Lex->name=$4.str;
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	  }
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        | CREATE TABLE_SYM table_ident
          {
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            LEX *lex= Lex;
	    lex->sql_command = SQLCOM_SHOW_CREATE;
	    if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL,0))
	      YYABORT;
            lex->only_view= 0;
	  }
        | CREATE VIEW_SYM table_ident
          {
            LEX *lex= Lex;
	    lex->sql_command = SQLCOM_SHOW_CREATE;
	    if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL, 0))
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	      YYABORT;
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            lex->only_view= 1;
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	  }
        | MASTER_SYM STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_MASTER_STAT;
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          }
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        | SLAVE STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_STAT;
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          }
	| CREATE PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

	    lex->sql_command = SQLCOM_SHOW_CREATE_PROC;
	    lex->spname= $3;
	  }
	| CREATE FUNCTION_SYM sp_name
	  {
	    LEX *lex= Lex;

	    lex->sql_command = SQLCOM_SHOW_CREATE_FUNC;
	    lex->spname= $3;
	  }
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	| PROCEDURE STATUS_SYM wild_and_where
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	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_PROC;
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	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
	      YYABORT;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
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	  }
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	| FUNCTION_SYM STATUS_SYM wild_and_where
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	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_FUNC;
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	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
	      YYABORT;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
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	  }
        | PROCEDURE CODE_SYM sp_name
          {
#ifdef DBUG_OFF
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
#else
            Lex->sql_command= SQLCOM_SHOW_PROC_CODE;
	    Lex->spname= $3;
#endif
          }
        | FUNCTION_SYM CODE_SYM sp_name
          {
#ifdef DBUG_OFF
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
#else
            Lex->sql_command= SQLCOM_SHOW_FUNC_CODE;
	    Lex->spname= $3;
#endif
          }
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        | CREATE EVENT_SYM sp_name
          {
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            Lex->sql_command = SQLCOM_SHOW_CREATE_EVENT;
            Lex->spname= $3;
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          };
       ;
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show_engine_param:
	STATUS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_ENGINE_STATUS; }
	| MUTEX_SYM
	  { Lex->sql_command= SQLCOM_SHOW_ENGINE_MUTEX; }
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	| LOGS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_ENGINE_LOGS; };
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master_or_binary:
	MASTER_SYM
	| BINARY;

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opt_storage:
	/* empty */
	| STORAGE_SYM;

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opt_db:
	/* empty */  { $$= 0; }
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	| from_or_in ident { $$= $2.str; };
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opt_full:
	/* empty */ { Lex->verbose=0; }
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	| FULL	    { Lex->verbose=1; };
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from_or_in:
	FROM
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	| IN_SYM;
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binlog_in:
	/* empty */ { Lex->mi.log_file_name = 0; }
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        | IN_SYM TEXT_STRING_sys { Lex->mi.log_file_name = $2.str; };
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binlog_from:
	/* empty */ { Lex->mi.pos = 4; /* skip magic number */ }
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        | FROM ulonglong_num { Lex->mi.pos = $2; };
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wild_and_where:
      /* empty */
      | LIKE TEXT_STRING_sys
	{ Lex->wild=  new (YYTHD->mem_root) String($2.str, $2.length,
                                                   system_charset_info); }
      | WHERE expr
        {
          Select->where= $2;
          if ($2)
            $2->top_level_item();
        }
      ;

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/* A Oracle compatible synonym for show */
describe:
	describe_command table_ident
	{
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          LEX *lex= Lex;
          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
          lex->sql_command= SQLCOM_SELECT;
          lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
          lex->select_lex.db= 0;
          lex->verbose= 0;
          if (prepare_schema_table(YYTHD, lex, $2, SCH_COLUMNS))
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	    YYABORT;
	}
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	opt_describe_column {}
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	| describe_command opt_extended_describe
	  { Lex->describe|= DESCRIBE_NORMAL; }
	  select
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          {
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	    LEX *lex=Lex;
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	    lex->select_lex.options|= SELECT_DESCRIBE;
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	  }
	;
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describe_command:
	DESC
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	| DESCRIBE;
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opt_extended_describe:
	/* empty */ {}
	| EXTENDED_SYM { Lex->describe|= DESCRIBE_EXTENDED; }
	;

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opt_describe_column:
	/* empty */	{}
	| text_string	{ Lex->wild= $1; }
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	| ident
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	  { Lex->wild= new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info); };
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/* flush things */

flush:
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	FLUSH_SYM opt_no_write_to_binlog
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	{
	  LEX *lex=Lex;
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	  if (lex->sphead && lex->sphead->m_type != TYPE_ENUM_PROCEDURE)
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	  {
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            /*
              Note that both FLUSH TABLES and FLUSH PRIVILEGES will break
              execution in prelocked mode. So it is better to disable
              FLUSH in stored functions and triggers completely.
            */
            my_error(ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG, MYF(0), "FLUSH");
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	    YYABORT;
	  }
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	  lex->sql_command= SQLCOM_FLUSH; lex->type=0;
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          lex->no_write_to_binlog= $2;
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	}
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	flush_options
	{}
	;
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flush_options:
	flush_options ',' flush_option
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	| flush_option;
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flush_option:
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	table_or_tables	{ Lex->type|= REFRESH_TABLES; } opt_table_list {}
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	| TABLES WITH READ_SYM LOCK_SYM { Lex->type|= REFRESH_TABLES | REFRESH_READ_LOCK; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE_FREE; }
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	| HOSTS_SYM	{ Lex->type|= REFRESH_HOSTS; }
	| PRIVILEGES	{ Lex->type|= REFRESH_GRANT; }
	| LOGS_SYM	{ Lex->type|= REFRESH_LOG; }
	| STATUS_SYM	{ Lex->type|= REFRESH_STATUS; }
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        | SLAVE         { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM    { Lex->type|= REFRESH_MASTER; }
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	| DES_KEY_FILE	{ Lex->type|= REFRESH_DES_KEY_FILE; }
 	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; };
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opt_table_list:
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	/* empty */  {;}
	| table_list {;};
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reset:
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	RESET_SYM
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RESET; lex->type=0;
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	} reset_options
	{}
	;

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reset_options:
	reset_options ',' reset_option
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	| reset_option;
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reset_option:
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        SLAVE                 { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM          { Lex->type|= REFRESH_MASTER; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE;};
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purge:
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	PURGE
	{
	  LEX *lex=Lex;
	  lex->type=0;
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	} purge_options
	{}
	;

purge_options:
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	master_or_binary LOGS_SYM purge_option
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	;
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purge_option:
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        TO_SYM TEXT_STRING_sys
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        {
	   Lex->sql_command = SQLCOM_PURGE;
	   Lex->to_log = $2.str;
        }
	| BEFORE_SYM expr
	{
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	  LEX *lex= Lex;
	  lex->value_list.empty();
	  lex->value_list.push_front($2);
	  lex->sql_command= SQLCOM_PURGE_BEFORE;
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	}
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	;
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/* kill threads */

kill:
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	KILL_SYM kill_option expr
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	{
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	  LEX *lex=Lex;
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	  lex->value_list.empty();
	  lex->value_list.push_front($3);
          lex->sql_command= SQLCOM_KILL;
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	};
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kill_option:
	/* empty */	 { Lex->type= 0; }
	| CONNECTION_SYM { Lex->type= 0; }
	| QUERY_SYM      { Lex->type= ONLY_KILL_QUERY; };

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/* change database */

use:	USE_SYM ident
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	{
	  LEX *lex=Lex;
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	  lex->sql_command=SQLCOM_CHANGE_DB;
	  lex->select_lex.db= $2.str;
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	};
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/* import, export of files */

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load:   LOAD DATA_SYM 
        {
          LEX *lex=Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOAD DATA");
	    YYABORT;
	  }
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          lex->fname_start= lex->ptr;
        }
        load_data
        {}
        |
        LOAD TABLE_SYM table_ident FROM MASTER_SYM
        {
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	  LEX *lex=Lex;
	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOAD TABLE");
	    YYABORT;
	  }
          lex->sql_command = SQLCOM_LOAD_MASTER_TABLE;
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          if (!Select->add_table_to_list(YYTHD, $3, NULL, TL_OPTION_UPDATING))
            YYABORT;
        };

load_data:
	load_data_lock opt_local INFILE TEXT_STRING_sys
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	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_LOAD;
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	  lex->lock_option= $1;
	  lex->local_file=  $2;
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	  lex->duplicates= DUP_ERROR;
	  lex->ignore= 0;
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	  if (!(lex->exchange= new sql_exchange($4.str, 0)))
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	    YYABORT;
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        }
        opt_duplicate INTO
        {
	  LEX *lex=Lex;
	  lex->fname_end= lex->ptr;
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	}
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        TABLE_SYM table_ident
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        {
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          LEX *lex=Lex;
          if (!Select->add_table_to_list(YYTHD, $10, NULL, TL_OPTION_UPDATING,
                                         lex->lock_option))
            YYABORT;
          lex->field_list.empty();
          lex->update_list.empty();
          lex->value_list.empty();
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        }
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        opt_field_term opt_line_term opt_ignore_lines opt_field_or_var_spec
        opt_load_data_set_spec
        {}
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        |
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	FROM MASTER_SYM
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        {
	  Lex->sql_command = SQLCOM_LOAD_MASTER_DATA;
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        };
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opt_local:
	/* empty */	{ $$=0;}
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	| LOCAL_SYM	{ $$=1;};
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load_data_lock:
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	/* empty */	{ $$= YYTHD->update_lock_default; }
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	| CONCURRENT	{ $$= TL_WRITE_CONCURRENT_INSERT ; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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opt_duplicate:
	/* empty */	{ Lex->duplicates=DUP_ERROR; }
	| REPLACE	{ Lex->duplicates=DUP_REPLACE; }
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	| IGNORE_SYM	{ Lex->ignore= 1; };
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opt_field_term:
	/* empty */
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	| COLUMNS field_term_list;
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field_term_list:
	field_term_list field_term
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	| field_term;
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field_term:
7962 7963
	TERMINATED BY text_string 
          {
7964
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->field_term= $3;
          }
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	| OPTIONALLY ENCLOSED BY text_string
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	  {
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            LEX *lex= Lex;
7970
            DBUG_ASSERT(lex->exchange != 0);
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            lex->exchange->enclosed= $4;
            lex->exchange->opt_enclosed= 1;
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	  }
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        | ENCLOSED BY text_string
7975
          {
7976
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->enclosed= $3;
          }
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        | ESCAPED BY text_string
7980
          {
7981
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->escaped= $3;
          };
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opt_line_term:
	/* empty */
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	| LINES line_term_list;
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line_term_list:
	line_term_list line_term
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	| line_term;
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line_term:
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        TERMINATED BY text_string
7995
          {
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            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_term= $3;
          }
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        | STARTING BY text_string
8000
          {
8001
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_start= $3;
          };
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opt_ignore_lines:
	/* empty */
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        | IGNORE_SYM NUM LINES
          {
8009
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->skip_lines= atol($2.str);
          };
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opt_field_or_var_spec:
	/* empty */	          { }
	| '(' fields_or_vars ')'  { }
	| '(' ')'	          { };

fields_or_vars:
        fields_or_vars ',' field_or_var
          { Lex->field_list.push_back($3); }
        | field_or_var
          { Lex->field_list.push_back($1); }
        ;
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field_or_var:
        simple_ident_nospvar {$$= $1;}
        | '@' ident_or_text
          { $$= new Item_user_var_as_out_param($2); }
        ;

opt_load_data_set_spec:
        /* empty */           { }
        | SET insert_update_list  { };


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/* Common definitions */

text_literal:
8039
	TEXT_STRING_literal
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	{
	  THD *thd= YYTHD;
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	  $$ = new Item_string($1.str,$1.length,thd->variables.collation_connection);
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	}
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	| NCHAR_STRING
8045
	{ $$=  new Item_string($1.str,$1.length,national_charset_info); }
8046
	| UNDERSCORE_CHARSET TEXT_STRING
8047
	  { $$ = new Item_string($2.str,$2.length,Lex->charset); }
8048
	| text_literal TEXT_STRING_literal
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	  { ((Item_string*) $1)->append($2.str,$2.length); }
	;
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text_string:
8053
	TEXT_STRING_literal
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	{ $$=  new (YYTHD->mem_root) String($1.str,$1.length,YYTHD->variables.collation_connection); }
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	| HEX_NUM
	  {
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	    Item *tmp= new Item_hex_string($1.str, $1.length);
8058
	    /*
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	      it is OK only emulate fix_fields, because we need only
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              value of constant
	    */
	    $$= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
8064
	      (String*) 0;
8065
	  }
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        | BIN_NUM
          {
	    Item *tmp= new Item_bin_string($1.str, $1.length);
	    /*
	      it is OK only emulate fix_fields, because we need only
              value of constant
	    */
	    $$= tmp ? tmp->quick_fix_field(), tmp->val_str((String*) 0) :
		      (String*) 0;
          }
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	;

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param_marker:
8079
        PARAM_MARKER
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        {
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          THD *thd=YYTHD;
	  LEX *lex= thd->lex;
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          Item_param *item= new Item_param((uint) (lex->tok_start -
                                                   (uchar *) thd->query));
          if (!($$= item) || lex->param_list.push_back(item))
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          {
8087
            my_message(ER_OUT_OF_RESOURCES, ER(ER_OUT_OF_RESOURCES), MYF(0));
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            YYABORT;
          }
8090 8091 8092
        }
	;

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signed_literal:
	literal		{ $$ = $1; }
	| '+' NUM_literal { $$ = $2; }
8096 8097
	| '-' NUM_literal
	  {
8098
	    $2->max_length++;
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	    $$= $2->neg();
8100
	  }
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	;


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literal:
	text_literal	{ $$ =	$1; }
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	| NUM_literal	{ $$ = $1; }
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	| NULL_SYM	{ $$ =	new Item_null();
8108
			  Lex->next_state=MY_LEX_OPERATOR_OR_IDENT;}
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	| FALSE_SYM	{ $$= new Item_int((char*) "FALSE",0,1); }
	| TRUE_SYM	{ $$= new Item_int((char*) "TRUE",1,1); }
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	| HEX_NUM	{ $$ =	new Item_hex_string($1.str, $1.length);}
	| BIN_NUM	{ $$= new Item_bin_string($1.str, $1.length); }
8113
	| UNDERSCORE_CHARSET HEX_NUM
8114
	  {
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	    Item *tmp= new Item_hex_string($2.str, $2.length);
8116
	    /*
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	      it is OK only emulate fix_fieds, because we need only
8118 8119 8120
              value of constant
	    */
	    String *str= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
8122
	      (String*) 0;
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	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
8126
	  }
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	| UNDERSCORE_CHARSET BIN_NUM
          {
	    Item *tmp= new Item_bin_string($2.str, $2.length);
	    /*
	      it is OK only emulate fix_fieds, because we need only
              value of constant
	    */
	    String *str= tmp ?
	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
	      (String*) 0;
	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
          }
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	| DATE_SYM text_literal { $$ = $2; }
	| TIME_SYM text_literal { $$ = $2; }
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	| TIMESTAMP text_literal { $$ = $2; };
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8145
NUM_literal:
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	NUM		{ int error; $$ = new Item_int($1.str, (longlong) my_strtoll10($1.str, NULL, &error), $1.length); }
	| LONG_NUM	{ int error; $$ = new Item_int($1.str, (longlong) my_strtoll10($1.str, NULL, &error), $1.length); }
8148
	| ULONGLONG_NUM	{ $$ =	new Item_uint($1.str, $1.length); }
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        | DECIMAL_NUM
8150
	{
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           $$= new Item_decimal($1.str, $1.length, YYTHD->charset());
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	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
	| FLOAT_NUM
	{
	   $$ =	new Item_float($1.str, $1.length);
	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
8165
	;
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8166

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/**********************************************************************
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** Creating different items.
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**********************************************************************/

insert_ident:
8172
	simple_ident_nospvar { $$=$1; }
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	| table_wild	 { $$=$1; };
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table_wild:
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	ident '.' '*'
8177
	{
8178
          SELECT_LEX *sel= Select;
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	  $$ = new Item_field(Lex->current_context(), NullS, $1.str, "*");
8180
	  sel->with_wild++;
8181
	}
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	| ident '.' ident '.' '*'
8183
	{
8184
          SELECT_LEX *sel= Select;
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	  $$ = new Item_field(Lex->current_context(), (YYTHD->client_capabilities &
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                             CLIENT_NO_SCHEMA ? NullS : $1.str),
                             $3.str,"*");
8188
	  sel->with_wild++;
8189 8190
	}
	;
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order_ident:
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	expr { $$=$1; };
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simple_ident:
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	ident
	{
	  sp_pvar_t *spv;
	  LEX *lex = Lex;
          sp_pcontext *spc = lex->spcont;
	  if (spc && (spv = spc->find_pvar(&$1)))
8202 8203 8204 8205 8206
	  {
            /* We're compiling a stored procedure and found a variable */
            Item_splocal *splocal;
            splocal= new Item_splocal($1, spv->offset, lex->tok_start_prev - 
                                      lex->sphead->m_tmp_query);
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#ifndef DBUG_OFF
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            if (splocal)
              splocal->owner= lex->sphead;
#endif
8211
	    $$ = (Item*) splocal;
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            lex->variables_used= 1;
	    lex->safe_to_cache_query=0;
	  }
	  else
	  {
	    SELECT_LEX *sel=Select;
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
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                 (Item*) new Item_field(Lex->current_context(), NullS, NullS, $1.str) :
	         (Item*) new Item_ref(Lex->current_context(), NullS, NullS, $1.str);
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	  }
        }
        | simple_ident_q { $$= $1; }
	;

simple_ident_nospvar:
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	ident
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	{
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	  SELECT_LEX *sel=Select;
8231
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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              (Item*) new Item_field(Lex->current_context(), NullS, NullS, $1.str) :
	      (Item*) new Item_ref(Lex->current_context(), NullS, NullS, $1.str);
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	}
8236
	| simple_ident_q { $$= $1; }
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	;
8238 8239 8240

simple_ident_q:
	ident '.' ident
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	{
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	  THD *thd= YYTHD;
8243
	  LEX *lex= thd->lex;
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          /*
            FIXME This will work ok in simple_ident_nospvar case because
            we can't meet simple_ident_nospvar in trigger now. But it
            should be changed in future.
          */
          if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
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              (!my_strcasecmp(system_charset_info, $1.str, "NEW") ||
8252 8253
               !my_strcasecmp(system_charset_info, $1.str, "OLD")))
          {
8254
            Item_trigger_field *trg_fld;
8255
            bool new_row= ($1.str[0]=='N' || $1.str[0]=='n');
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8257 8258 8259
            if (lex->trg_chistics.event == TRG_EVENT_INSERT &&
                !new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "OLD", "on INSERT");
8261 8262
              YYABORT;
            }
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8264 8265 8266
            if (lex->trg_chistics.event == TRG_EVENT_DELETE &&
                new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "NEW", "on DELETE");
8268 8269
              YYABORT;
            }
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            if (!(trg_fld= new Item_trigger_field(Lex->current_context(),
8272
                                                  new_row ?
8273 8274 8275
                                                  Item_trigger_field::NEW_ROW:
                                                  Item_trigger_field::OLD_ROW,
                                                  $3.str)))
8276
              YYABORT;
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8278 8279 8280 8281 8282 8283
            /*
              Let us add this item to list of all Item_trigger_field objects
              in trigger.
            */
            lex->trg_table_fields.link_in_list((byte *)trg_fld,
              (byte**)&trg_fld->next_trg_field);
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8285 8286 8287 8288 8289 8290 8291
            $$= (Item *)trg_fld;
          }
          else
          {
	    SELECT_LEX *sel= lex->current_select;
	    if (sel->no_table_names_allowed)
	    {
8292 8293
	      my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                       MYF(0), $1.str, thd->where);
8294 8295 8296
	    }
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
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	        (Item*) new Item_field(Lex->current_context(), NullS, $1.str, $3.str) :
	        (Item*) new Item_ref(Lex->current_context(), NullS, $1.str, $3.str);
8299 8300
          }
        }
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	| '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
8304
	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
8308 8309
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $2.str, thd->where);
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	  }
8311
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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	      (Item*) new Item_field(Lex->current_context(), NullS, $2.str, $4.str) :
              (Item*) new Item_ref(Lex->current_context(), NullS, $2.str, $4.str);
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	}
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	| ident '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
8319
	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
8323 8324
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $3.str, thd->where);
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	  }
8326
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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	      (Item*) new Item_field(Lex->current_context(),
8329
                                     (YYTHD->client_capabilities &
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				      CLIENT_NO_SCHEMA ? NullS : $1.str),
				     $3.str, $5.str) :
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	      (Item*) new Item_ref(Lex->current_context(),
8333
                                   (YYTHD->client_capabilities &
8334
				    CLIENT_NO_SCHEMA ? NullS : $1.str),
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                                   $3.str, $5.str);
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	};
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field_ident:
	ident			{ $$=$1;}
8341 8342 8343 8344 8345
	| ident '.' ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->db))
            {
8346
              my_error(ER_WRONG_DB_NAME, MYF(0), $1.str);
8347 8348
              YYABORT;
            }
8349 8350
            if (my_strcasecmp(table_alias_charset, $3.str,
                              table->table_name))
8351
            {
8352
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3.str);
8353 8354 8355 8356 8357 8358 8359 8360 8361
              YYABORT;
            }
            $$=$5;
          }
	| ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->alias))
            {
8362
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $1.str);
8363 8364 8365 8366
              YYABORT;
            }
            $$=$3;
          }
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	| '.' ident		{ $$=$2;}	/* For Delphi */;
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table_ident:
	ident			{ $$=new Table_ident($1); }
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	| ident '.' ident	{ $$=new Table_ident(YYTHD, $1,$3,0);}
8372 8373 8374
	| '.' ident		{ $$=new Table_ident($2);} /* For Delphi */
        ;

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table_ident_nodb:
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	ident			{ LEX_STRING db={(char*) any_db,3}; $$=new Table_ident(YYTHD, db,$1,0); }
8377
        ;
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IDENT_sys:
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	IDENT { $$= $1; }
	| IDENT_QUOTED
	  {
	    THD *thd= YYTHD;
	    if (thd->charset_is_system_charset)
8385 8386
            {
              CHARSET_INFO *cs= system_charset_info;
8387
              int dummy_error;
8388 8389
              uint wlen= cs->cset->well_formed_len(cs, $1.str,
                                                   $1.str+$1.length,
8390
                                                   $1.length, &dummy_error);
8391 8392
              if (wlen < $1.length)
              {
8393 8394
                my_error(ER_INVALID_CHARACTER_STRING, MYF(0),
                         cs->csname, $1.str + wlen);
8395 8396
                YYABORT;
              }
8397
	      $$= $1;
8398
            }
8399 8400 8401 8402
	    else
	      thd->convert_string(&$$, system_charset_info,
				  $1.str, $1.length, thd->charset());
	  }
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	;

TEXT_STRING_sys:
	TEXT_STRING
	{
	  THD *thd= YYTHD;
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	  if (thd->charset_is_system_charset)
	    $$= $1;
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	  else
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	    thd->convert_string(&$$, system_charset_info,
				$1.str, $1.length, thd->charset());
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	}
	;

8417
TEXT_STRING_literal:
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	TEXT_STRING
	{
	  THD *thd= YYTHD;
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	  if (thd->charset_is_collation_connection)
	    $$= $1;
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	  else
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	    thd->convert_string(&$$, thd->variables.collation_connection,
				$1.str, $1.length, thd->charset());
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	}
	;


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ident:
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	IDENT_sys	    { $$=$1; }
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	| keyword
	{
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	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
8437 8438
	}
	;
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label_ident:
	IDENT_sys	    { $$=$1; }
	| keyword_sp
	{
	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
	}
	;

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ident_or_text:
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        ident                   { $$=$1;}
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	| TEXT_STRING_sys	{ $$=$1;}
	| LEX_HOSTNAME		{ $$=$1;};
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user:
	ident_or_text
	{
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	  THD *thd= YYTHD;
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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	    YYABORT;
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	  $$->user = $1;
	  $$->host.str= (char *) "%";
	  $$->host.length= 1;
	}
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	| ident_or_text '@' ident_or_text
	  {
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	    THD *thd= YYTHD;
	    if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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	      YYABORT;
	    $$->user = $1; $$->host=$3;
8471
	  }
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	| CURRENT_USER optional_braces
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	{
          THD *thd= YYTHD;
8475
          Security_context *sctx= thd->security_ctx;
8476 8477
          if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
            YYABORT;
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          $$->user.str= sctx->priv_user;
          $$->user.length= strlen(sctx->priv_user);
          if (*sctx->priv_host != 0)
8481
          {
8482 8483
            $$->host.str= sctx->priv_host;
            $$->host.length= strlen(sctx->priv_host);
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          }
          else
          {
            $$->host.str= (char *) "%";
            $$->host.length= 1;
          }
	};
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8491

8492
/* Keyword that we allow for identifiers (except SP labels) */
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keyword:
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	keyword_sp		{}
	| ASCII_SYM		{}
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	| AUTHORS_SYM		{}
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	| BACKUP_SYM		{}
	| BEGIN_SYM		{}
	| BYTE_SYM		{}
	| CACHE_SYM		{}
	| CHARSET		{}
	| CHECKSUM_SYM		{}
	| CLOSE_SYM		{}
	| COMMENT_SYM		{}
	| COMMIT_SYM		{}
	| CONTAINS_SYM          {}
        | DEALLOCATE_SYM        {}
	| DO_SYM		{}
	| END			{}
	| EXECUTE_SYM		{}
	| FLUSH_SYM		{}
	| HANDLER_SYM		{}
	| HELP_SYM		{}
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        | INSTALL_SYM           {}
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	| LANGUAGE_SYM          {}
	| NO_SYM		{}
	| OPEN_SYM		{}
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        | PARSER_SYM            {}
8519
	| PARTITION_SYM		{}
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        | PLUGIN_SYM            {}
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        | PREPARE_SYM           {}
	| REPAIR		{}
	| RESET_SYM		{}
	| RESTORE_SYM		{}
	| ROLLBACK_SYM		{}
	| SAVEPOINT_SYM		{}
	| SECURITY_SYM		{}
	| SIGNED_SYM		{}
	| SLAVE			{}
8530
        | SONAME_SYM            {}
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	| START_SYM		{}
	| STOP_SYM		{}
	| TRUNCATE_SYM		{}
	| UNICODE_SYM		{}
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        | UNINSTALL_SYM         {}
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        | XA_SYM                {}
	;

/*
 * Keywords that we allow for labels in SPs.
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 * Anything that's the beginning of a statement or characteristics
 * must be in keyword above, otherwise we get (harmful) shift/reduce
 * conflicts.
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 */
keyword_sp:
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	ACTION			{}
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	| ADDDATE_SYM		{}
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	| AFTER_SYM		{}
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	| AGAINST		{}
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	| AGGREGATE_SYM		{}
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	| ALGORITHM_SYM		{}
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	| ANY_SYM		{}
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	| AT_SYM                {}
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	| AUTO_INC		{}
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	| AVG_ROW_LENGTH	{}
	| AVG_SYM		{}
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	| BERKELEY_DB_SYM	{}
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	| BINLOG_SYM		{}
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	| BIT_SYM		{}
	| BOOL_SYM		{}
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	| BOOLEAN_SYM		{}
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	| BTREE_SYM		{}
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	| CASCADED              {}
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	| CHAIN_SYM		{}
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	| CHANGED		{}
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	| CIPHER_SYM		{}
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	| CLIENT_SYM		{}
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	| COALESCE		{}
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	| CODE_SYM              {}
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	| COLLATION_SYM		{}
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        | COLUMNS               {}
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	| COMMITTED_SYM		{}
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	| COMPACT_SYM		{}
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	| COMPLETION_SYM	{}
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	| COMPRESSED_SYM	{}
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	| CONCURRENT		{}
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	| CONSISTENT_SYM	{}
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	| CUBE_SYM		{}
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	| DATA_SYM		{}
	| DATETIME		{}
	| DATE_SYM		{}
	| DAY_SYM		{}
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	| DEFINER_SYM		{}
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	| DELAY_KEY_WRITE_SYM	{}
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	| DES_KEY_FILE		{}
	| DIRECTORY_SYM		{}
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	| DISCARD		{}
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	| DUMPFILE		{}
	| DUPLICATE_SYM		{}
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	| DYNAMIC_SYM		{}
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	| ENDS_SYM		{}
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	| ENUM			{}
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	| ENGINE_SYM		{}
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	| ENGINES_SYM		{}
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	| ERRORS		{}
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	| ESCAPE_SYM		{}
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	| EVENT_SYM		{}
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	| EVENTS_SYM		{}
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	| EVERY_SYM             {}
	| EXPANSION_SYM         {}
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	| EXTENDED_SYM		{}
8602
	| FAST_SYM		{}
8603
	| FOUND_SYM		{}
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	| DISABLE_SYM		{}
	| ENABLE_SYM		{}
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	| FULL			{}
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	| FILE_SYM		{}
	| FIRST_SYM		{}
	| FIXED_SYM		{}
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	| FRAC_SECOND_SYM	{}
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	| GEOMETRY_SYM		{}
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	| GEOMETRYCOLLECTION	{}
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	| GET_FORMAT		{}
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	| GRANTS		{}
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	| GLOBAL_SYM		{}
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	| HASH_SYM		{}
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	| HOSTS_SYM		{}
	| HOUR_SYM		{}
	| IDENTIFIED_SYM	{}
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	| INVOKER_SYM		{}
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	| IMPORT		{}
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	| INDEXES		{}
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	| ISOLATION		{}
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	| ISSUER_SYM		{}
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	| INNOBASE_SYM		{}
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	| INSERT_METHOD		{}
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	| RELAY_THREAD		{}
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	| LAST_SYM		{}
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	| LEAVES                {}
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	| LESS_SYM		{}
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	| LEVEL_SYM		{}
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	| LINESTRING		{}
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	| LIST_SYM		{}
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	| LOCAL_SYM		{}
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	| LOCKS_SYM		{}
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	| LOGS_SYM		{}
	| MAX_ROWS		{}
	| MASTER_SYM		{}
	| MASTER_HOST_SYM	{}
	| MASTER_PORT_SYM	{}
	| MASTER_LOG_FILE_SYM	{}
	| MASTER_LOG_POS_SYM	{}
	| MASTER_USER_SYM	{}
	| MASTER_PASSWORD_SYM	{}
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	| MASTER_SERVER_ID_SYM  {}
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	| MASTER_CONNECT_RETRY_SYM	{}
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	| MASTER_SSL_SYM	{}
	| MASTER_SSL_CA_SYM	{}
	| MASTER_SSL_CAPATH_SYM	{}
	| MASTER_SSL_CERT_SYM	{}
	| MASTER_SSL_CIPHER_SYM	{}
	| MASTER_SSL_KEY_SYM	{}
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	| MAX_CONNECTIONS_PER_HOUR	 {}
	| MAX_QUERIES_PER_HOUR	{}
	| MAX_UPDATES_PER_HOUR	{}
8656
	| MAX_USER_CONNECTIONS_SYM {}
8657
	| MAX_VALUE_SYM         {}
8658
	| MEDIUM_SYM		{}
8659
	| MERGE_SYM		{}
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	| MICROSECOND_SYM	{}
8661
        | MIGRATE_SYM           {}
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	| MINUTE_SYM		{}
	| MIN_ROWS		{}
	| MODIFY_SYM		{}
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	| MODE_SYM		{}
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	| MONTH_SYM		{}
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	| MULTILINESTRING	{}
	| MULTIPOINT		{}
	| MULTIPOLYGON		{}
8670
        | MUTEX_SYM             {}
8671
	| NAME_SYM              {}
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	| NAMES_SYM		{}
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	| NATIONAL_SYM		{}
	| NCHAR_SYM		{}
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	| NDBCLUSTER_SYM	{}
8676
	| NEXT_SYM		{}
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	| NEW_SYM		{}
8678
	| NODEGROUP_SYM		{}
8679
	| NONE_SYM		{}
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	| NVARCHAR_SYM		{}
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	| OFFSET_SYM		{}
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	| OLD_PASSWORD		{}
8683
	| ONE_SHOT_SYM		{}
8684
        | ONE_SYM               {}
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	| PACK_KEYS_SYM		{}
8686
	| PARTIAL		{}
8687
	| PARTITIONS_SYM	{}
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	| PASSWORD		{}
8689
        | PHASE_SYM             {}
8690
	| POINT_SYM		{}
8691
	| POLYGON		{}
8692
        | PRESERVE_SYM          {}
8693
	| PREV_SYM		{}
8694
        | PRIVILEGES            {}
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	| PROCESS		{}
	| PROCESSLIST_SYM	{}
8697
	| QUARTER_SYM		{}
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	| QUERY_SYM		{}
8699
	| QUICK			{}
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	| RAID_0_SYM		{}
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	| RAID_CHUNKS		{}
	| RAID_CHUNKSIZE	{}
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	| RAID_STRIPED_SYM	{}
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	| RAID_TYPE		{}
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        | RECOVER_SYM           {}
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        | REDUNDANT_SYM         {}
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	| RELAY_LOG_FILE_SYM	{}
	| RELAY_LOG_POS_SYM	{}
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	| RELOAD		{}
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	| REORGANISE_SYM	{}
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	| REPEATABLE_SYM	{}
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	| REPLICATION		{}
8713
	| RESOURCES		{}
8714
        | RESUME_SYM            {}
8715
	| RETURNS_SYM           {}
8716
	| ROLLUP_SYM		{}
8717
	| ROUTINE_SYM		{}
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	| ROWS_SYM		{}
	| ROW_FORMAT_SYM	{}
	| ROW_SYM		{}
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	| RTREE_SYM		{}
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	| SCHEDULE_SYM		{}	
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	| SECOND_SYM		{}
8724
	| SERIAL_SYM		{}
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	| SERIALIZABLE_SYM	{}
	| SESSION_SYM		{}
8727
	| SIMPLE_SYM		{}
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	| SHARE_SYM		{}
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	| SHUTDOWN		{}
8730
	| SNAPSHOT_SYM		{}
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	| SOUNDS_SYM		{}
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	| SQL_CACHE_SYM		{}
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	| SQL_BUFFER_RESULT	{}
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	| SQL_NO_CACHE_SYM	{}
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	| SQL_THREAD		{}
8736
	| STARTS_SYM		{}
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	| STATUS_SYM		{}
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	| STORAGE_SYM		{}
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	| STRING_SYM		{}
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	| SUBDATE_SYM		{}
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	| SUBJECT_SYM		{}
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	| SUBPARTITION_SYM	{}
	| SUBPARTITIONS_SYM	{}
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	| SUPER_SYM		{}
8745
        | SUSPEND_SYM           {}
8746
        | TABLES                {}
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	| TABLESPACE		{}
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	| TEMPORARY		{}
8749
	| TEMPTABLE_SYM		{}
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	| TEXT_SYM		{}
8751
	| THAN_SYM		{}
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	| TRANSACTION_SYM	{}
8753
	| TRIGGERS_SYM		{}
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	| TIMESTAMP		{}
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	| TIMESTAMP_ADD		{}
	| TIMESTAMP_DIFF	{}
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	| TIME_SYM		{}
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	| TYPES_SYM		{}
8759
        | TYPE_SYM              {}
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        | UDF_RETURNS_SYM       {}
8761
	| FUNCTION_SYM		{}
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	| UNCOMMITTED_SYM	{}
8763
	| UNDEFINED_SYM		{}
8764
	| UNKNOWN_SYM		{}
8765
	| UNTIL_SYM		{}
8766
	| USER			{}
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	| USE_FRM		{}
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	| VARIABLES		{}
8769
	| VIEW_SYM		{}
8770
	| VALUE_SYM		{}
8771
	| WARNINGS		{}
8772
	| WEEK_SYM		{}
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	| WORK_SYM		{}
8774
	| X509_SYM		{}
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	| YEAR_SYM		{}
	;
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/* Option functions */

set:
	SET opt_option
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SET_OPTION;
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	  mysql_init_select(lex);
8786
	  lex->option_type=OPT_SESSION;
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	  lex->var_list.empty();
8788
          lex->one_shot_set= 0;
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	}
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	option_value_list
	{}
	;
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opt_option:
	/* empty */ {}
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	| OPTION {};
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option_value_list:
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	option_type_value
	| option_value_list ',' option_type_value;

option_type_value:
        {
          if (Lex->sphead)
          {
            /*
              If we are in SP we want have own LEX for each assignment.
              This is mostly because it is hard for several sp_instr_set
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              and sp_instr_set_trigger instructions share one LEX.
              (Well, it is theoretically possible but adds some extra
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               overhead on preparation for execution stage and IMO less
               robust).

              QQ: May be we should simply prohibit group assignments in SP?
            */
            LEX *lex;
            Lex->sphead->reset_lex(YYTHD);
            lex= Lex;
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            /* Set new LEX as if we at start of set rule. */
	    lex->sql_command= SQLCOM_SET_OPTION;
	    mysql_init_select(lex);
	    lex->option_type=OPT_SESSION;
	    lex->var_list.empty();
            lex->one_shot_set= 0;
	    lex->sphead->m_tmp_query= lex->tok_start;
          }
        }
8829
	ext_option_value
8830 8831
        {
          LEX *lex= Lex;
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8833 8834 8835
          if (lex->sphead)
          {
            sp_head *sp= lex->sphead;
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	    if (!lex->var_list.is_empty())
	    {
              /*
                We have assignment to user or system variable or
                option setting, so we should construct sp_instr_stmt
                for it.
              */
              LEX_STRING qbuff;
	      sp_instr_stmt *i;
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8847 8848 8849
              if (!(i= new sp_instr_stmt(sp->instructions(), lex->spcont,
                                         lex)))
                YYABORT;
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              if (lex->ptr - lex->tok_end > 1)
                qbuff.length= lex->ptr - sp->m_tmp_query;
              else
                qbuff.length= lex->tok_end - sp->m_tmp_query;
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              if (!(qbuff.str= alloc_root(YYTHD->mem_root, qbuff.length + 5)))
                YYABORT;
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              strmake(strmake(qbuff.str, "SET ", 4), (char *)sp->m_tmp_query,
                      qbuff.length);
              qbuff.length+= 4;
              i->m_query= qbuff;
              sp->add_instr(i);
            }
            lex->sphead->restore_lex(YYTHD);
          }
        };
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option_type:
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        option_type2    {}
	| GLOBAL_SYM	{ $$=OPT_GLOBAL; }
	| LOCAL_SYM	{ $$=OPT_SESSION; }
	| SESSION_SYM	{ $$=OPT_SESSION; }
	;

option_type2:
	/* empty */	{ $$= OPT_DEFAULT; }
	| ONE_SHOT_SYM	{ Lex->one_shot_set= 1; $$= OPT_SESSION; }
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	;

opt_var_type:
	/* empty */	{ $$=OPT_SESSION; }
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	| GLOBAL_SYM	{ $$=OPT_GLOBAL; }
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	| LOCAL_SYM	{ $$=OPT_SESSION; }
	| SESSION_SYM	{ $$=OPT_SESSION; }
	;

opt_var_ident_type:
	/* empty */		{ $$=OPT_DEFAULT; }
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	| GLOBAL_SYM '.'	{ $$=OPT_GLOBAL; }
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	| LOCAL_SYM '.'		{ $$=OPT_SESSION; }
	| SESSION_SYM '.'	{ $$=OPT_SESSION; }
	;
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ext_option_value:
        sys_option_value
        | option_type2 option_value;
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sys_option_value:
        option_type internal_variable_name equal set_expr_or_default
        {
          LEX *lex=Lex;
8903

8904
          if ($2.var == trg_new_row_fake_var)
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          {
            /* We are in trigger and assigning value to field of new row */
            Item *it;
8908
            Item_trigger_field *trg_fld;
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            sp_instr_set_trigger_field *sp_fld;
	    LINT_INIT(sp_fld);
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            if ($1)
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
8915
            }
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            if ($4)
              it= $4;
8918
            else
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            {
              /* QQ: Shouldn't this be field's default value ? */
              it= new Item_null();
            }
8923

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            if (!(trg_fld= new Item_trigger_field(Lex->current_context(),
8925
                                                  Item_trigger_field::NEW_ROW,
8926
                                                  $2.base_name.str)) ||
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                !(sp_fld= new sp_instr_set_trigger_field(lex->sphead->
                          	                         instructions(),
                                	                 lex->spcont,
							 trg_fld,
                                        	         it, lex)))
8932
              YYABORT;
8933

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            /*
              Let us add this item to list of all Item_trigger_field
              objects in trigger.
            */
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            lex->trg_table_fields.link_in_list((byte *)trg_fld,
                                    (byte **)&trg_fld->next_trg_field);
8940

8941
            lex->sphead->add_instr(sp_fld);
8942 8943 8944 8945
          }
          else if ($2.var)
          { /* System variable */
            if ($1)
8946
              lex->option_type= $1;
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            lex->var_list.push_back(new set_var(lex->option_type, $2.var,
                                    &$2.base_name, $4));
          }
          else
          {
            /* An SP local variable */
            sp_pcontext *ctx= lex->spcont;
            sp_pvar_t *spv;
8955
            sp_instr_set *sp_set;
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            Item *it;
            if ($1)
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }

            spv= ctx->find_pvar(&$2.base_name);

            if ($4)
              it= $4;
            else if (spv->dflt)
              it= spv->dflt;
            else
              it= new Item_null();
8971 8972 8973
            sp_set= new sp_instr_set(lex->sphead->instructions(), ctx,
                                     spv->offset, it, spv->type, lex, TRUE);
            lex->sphead->add_instr(sp_set);
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          }
        }
        | option_type TRANSACTION_SYM ISOLATION LEVEL_SYM isolation_types
	{
	  LEX *lex=Lex;
8979
          if ($1)
8980
            lex->option_type= $1;
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	  lex->var_list.push_back(new set_var(lex->option_type,
                                              find_sys_var("tx_isolation"),
                                              &null_lex_str,
                                              new Item_int((int32) $5)));
	}
        ;

option_value:
	'@' ident_or_text equal expr
	{
          Lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
	}
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	| '@' '@' opt_var_ident_type internal_variable_name equal set_expr_or_default
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	  {
	    LEX *lex=Lex;
8996
	    lex->var_list.push_back(new set_var($3, $4.var, &$4.base_name, $6));
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	  }
8998
	| charset old_or_new_charset_name_or_default
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= Lex;
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	  $2= $2 ? $2: global_system_variables.character_set_client;
9003
	  lex->var_list.push_back(new set_var_collation_client($2,thd->variables.collation_database,$2));
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	}
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        | NAMES_SYM equal expr
	  {
	    LEX *lex= Lex;
            sp_pcontext *spc= lex->spcont;
	    LEX_STRING names;

	    names.str= (char *)"names";
	    names.length= 5;
	    if (spc && spc->find_pvar(&names))
              my_error(ER_SP_BAD_VAR_SHADOW, MYF(0), names.str);
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            else
              yyerror(ER(ER_SYNTAX_ERROR));

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	    YYABORT;
	  }
9020
	| NAMES_SYM charset_name_or_default opt_collate
9021
	{
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	  LEX *lex= Lex;
9023
	  $2= $2 ? $2 : global_system_variables.character_set_client;
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	  $3= $3 ? $3 : $2;
	  if (!my_charset_same($2,$3))
9026
	  {
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	    my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                     $3->name, $2->csname);
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	    YYABORT;
9030
	  }
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	  lex->var_list.push_back(new set_var_collation_client($3,$3,$3));
9032
	}
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	| PASSWORD equal text_or_password
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	  {
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	    THD *thd=YYTHD;
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	    LEX_USER *user;
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	    LEX *lex= Lex;	    
            sp_pcontext *spc= lex->spcont;
	    LEX_STRING pw;

	    pw.str= (char *)"password";
	    pw.length= 8;
	    if (spc && spc->find_pvar(&pw))
	    {
              my_error(ER_SP_BAD_VAR_SHADOW, MYF(0), pw.str);
	      YYABORT;
	    }
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	    if (!(user=(LEX_USER*) thd->alloc(sizeof(LEX_USER))))
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	      YYABORT;
9050
	    user->host=null_lex_str;
9051
	    user->user.str=thd->security_ctx->priv_user;
9052
	    thd->lex->var_list.push_back(new set_var_password(user, $3));
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	  }
	| PASSWORD FOR_SYM user equal text_or_password
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	  {
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	    Lex->var_list.push_back(new set_var_password($3,$5));
	  }
9058
	;
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internal_variable_name:
	ident
	{
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	  LEX *lex= Lex;
          sp_pcontext *spc= lex->spcont;
	  sp_pvar_t *spv;

	  /* We have to lookup here since local vars can shadow sysvars */
	  if (!spc || !(spv = spc->find_pvar(&$1)))
	  {
            /* Not an SP local variable */
	    sys_var *tmp=find_sys_var($1.str, $1.length);
	    if (!tmp)
	      YYABORT;
	    $$.var= tmp;
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	    $$.base_name= null_lex_str;
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            /*
              If this is time_zone variable we should open time zone
              describing tables 
            */
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            if (tmp == &sys_time_zone &&
                lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
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            else if (spc && tmp == &sys_autocommit)
            {
              /*
                We don't allow setting AUTOCOMMIT from a stored function
		or trigger.
              */
              lex->sphead->m_flags|= sp_head::HAS_SET_AUTOCOMMIT_STMT;
            }
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	  }
	  else
	  {
            /* An SP local variable */
	    $$.var= NULL;
	    $$.base_name= $1;
	  }
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	}
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	| ident '.' ident
	  {
9101
            LEX *lex= Lex;
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            if (check_reserved_words(&$1))
            {
9104
	      yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
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            if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
                (!my_strcasecmp(system_charset_info, $1.str, "NEW") || 
                 !my_strcasecmp(system_charset_info, $1.str, "OLD")))
            {
              if ($1.str[0]=='O' || $1.str[0]=='o')
              {
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                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "OLD", "");
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                YYABORT;
              }
              if (lex->trg_chistics.event == TRG_EVENT_DELETE)
              {
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                my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0),
                         "NEW", "on DELETE");
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                YYABORT;
              }
              if (lex->trg_chistics.action_time == TRG_ACTION_AFTER)
              {
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                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "NEW", "after ");
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                YYABORT;
              }
              /* This special combination will denote field of NEW row */
9128
              $$.var= trg_new_row_fake_var;
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              $$.base_name= $3;
            }
            else
            {
              sys_var *tmp=find_sys_var($3.str, $3.length);
              if (!tmp)
                YYABORT;
              if (!tmp->is_struct())
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                my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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              $$.var= tmp;
              $$.base_name= $1;
            }
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	  }
	| DEFAULT '.' ident
	  {
	    sys_var *tmp=find_sys_var($3.str, $3.length);
	    if (!tmp)
	      YYABORT;
	    if (!tmp->is_struct())
9148
	      my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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	    $$.var= tmp;
	    $$.base_name.str=    (char*) "default";
	    $$.base_name.length= 7;
9152
	  }
9153
        ;
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isolation_types:
	READ_SYM UNCOMMITTED_SYM	{ $$= ISO_READ_UNCOMMITTED; }
	| READ_SYM COMMITTED_SYM	{ $$= ISO_READ_COMMITTED; }
	| REPEATABLE_SYM READ_SYM	{ $$= ISO_REPEATABLE_READ; }
	| SERIALIZABLE_SYM		{ $$= ISO_SERIALIZABLE; }
	;
9161

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text_or_password:
	TEXT_STRING { $$=$1.str;}
	| PASSWORD '(' TEXT_STRING ')'
	  {
9166
	    $$= $3.length ? YYTHD->variables.old_passwords ?
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	        Item_func_old_password::alloc(YYTHD, $3.str) :
	        Item_func_password::alloc(YYTHD, $3.str) :
	      $3.str;
	  }
	| OLD_PASSWORD '(' TEXT_STRING ')'
	  {
	    $$= $3.length ? Item_func_old_password::alloc(YYTHD, $3.str) :
	      $3.str;
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	  }
          ;
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set_expr_or_default:
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	expr      { $$=$1; }
	| DEFAULT { $$=0; }
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	| ON	  { $$=new Item_string("ON",  2, system_charset_info); }
	| ALL	  { $$=new Item_string("ALL", 3, system_charset_info); }
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	| BINARY  { $$=new Item_string("binary", 6, system_charset_info); }
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	;
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/* Lock function */

lock:
	LOCK_SYM table_or_tables
	{
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	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
9197
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOCK");
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	    YYABORT;
	  }
	  lex->sql_command= SQLCOM_LOCK_TABLES;
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	}
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	table_lock_list
	{}
9204
	;
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table_or_tables:
	TABLE_SYM
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	| TABLES;
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table_lock_list:
	table_lock
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	| table_lock_list ',' table_lock;
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table_lock:
	table_ident opt_table_alias lock_option
9216
	{
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	  if (!Select->add_table_to_list(YYTHD, $1, $2, 0, (thr_lock_type) $3))
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	   YYABORT;
	}
9220
        ;
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lock_option:
	READ_SYM	{ $$=TL_READ_NO_INSERT; }
9224
	| WRITE_SYM     { $$=YYTHD->update_lock_default; }
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	| LOW_PRIORITY WRITE_SYM { $$=TL_WRITE_LOW_PRIORITY; }
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	| READ_SYM LOCAL_SYM { $$= TL_READ; }
        ;
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unlock:
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	UNLOCK_SYM
	{
	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
9236
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "UNLOCK");
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	    YYABORT;
	  }
	  lex->sql_command= SQLCOM_UNLOCK_TABLES;
	}
	table_or_tables
	{}
9243
        ;
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9246
/*
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** Handler: direct access to ISAM functions
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*/

handler:
	HANDLER_SYM table_ident OPEN_SYM opt_table_alias
	{
9253
	  LEX *lex= Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
	    YYABORT;
	  }
9259
	  lex->sql_command = SQLCOM_HA_OPEN;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, $4, 0))
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	    YYABORT;
	}
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	| HANDLER_SYM table_ident_nodb CLOSE_SYM
9264
	{
9265
	  LEX *lex= Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
	    YYABORT;
	  }
9271
	  lex->sql_command = SQLCOM_HA_CLOSE;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
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	    YYABORT;
	}
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	| HANDLER_SYM table_ident_nodb READ_SYM
9276
	{
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	  LEX *lex=Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
	    YYABORT;
	  }
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	  lex->sql_command = SQLCOM_HA_READ;
	  lex->ha_rkey_mode= HA_READ_KEY_EXACT;	/* Avoid purify warnings */
9285
	  lex->current_select->select_limit= new Item_int((int32) 1);
9286
	  lex->current_select->offset_limit= 0;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
9288
	    YYABORT;
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        }
9290
        handler_read_or_scan where_clause opt_limit_clause {}
9291
        ;
9292

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handler_read_or_scan:
9294 9295
	handler_scan_function         { Lex->ident= null_lex_str; }
        | ident handler_rkey_function { Lex->ident= $1; }
9296
        ;
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handler_scan_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
9300 9301
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
        ;
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handler_rkey_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
	| PREV_SYM { Lex->ha_read_mode = RPREV;  }
	| LAST_SYM { Lex->ha_read_mode = RLAST;  }
9308 9309
	| handler_rkey_mode
	{
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	  LEX *lex=Lex;
	  lex->ha_read_mode = RKEY;
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	  lex->ha_rkey_mode=$1;
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	  if (!(lex->insert_list = new List_item))
9314
	    YYABORT;
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	} '(' values ')' { }
        ;
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handler_rkey_mode:
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	  EQ     { $$=HA_READ_KEY_EXACT;   }
	| GE     { $$=HA_READ_KEY_OR_NEXT; }
	| LE     { $$=HA_READ_KEY_OR_PREV; }
	| GT_SYM { $$=HA_READ_AFTER_KEY;   }
9323 9324
	| LT     { $$=HA_READ_BEFORE_KEY;  }
        ;
9325

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/* GRANT / REVOKE */

revoke:
9329
	REVOKE clear_privileges revoke_command
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	{}
        ;

revoke_command:
9334
	grant_privileges ON opt_table grant_ident FROM grant_list
9335
	{
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          LEX *lex= Lex;
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= 0;
        }
        |
        grant_privileges ON FUNCTION_SYM grant_ident FROM grant_list
        {
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= TYPE_ENUM_FUNCTION;
          
        }
	|
        grant_privileges ON PROCEDURE grant_ident FROM grant_list
        {
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= TYPE_ENUM_PROCEDURE;
9364
        }
9365
	|
9366
	ALL opt_privileges ',' GRANT OPTION FROM grant_list
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	{
	  Lex->sql_command = SQLCOM_REVOKE_ALL;
	}
9370
	;
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grant:
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	GRANT clear_privileges grant_command
	{}
        ;

grant_command:
	grant_privileges ON opt_table grant_ident TO_SYM grant_list
9379
	require_clause grant_options
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	{
          LEX *lex= Lex;
          lex->sql_command= SQLCOM_GRANT;
          lex->type= 0;
        }
        |
	grant_privileges ON FUNCTION_SYM grant_ident TO_SYM grant_list
	require_clause grant_options
	{
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
          lex->sql_command= SQLCOM_GRANT;
          lex->type= TYPE_ENUM_FUNCTION;
        }
        |
	grant_privileges ON PROCEDURE grant_ident TO_SYM grant_list
	require_clause grant_options
	{
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
          }
          lex->sql_command= SQLCOM_GRANT;
          lex->type= TYPE_ENUM_PROCEDURE;
        }
        ;
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opt_table:
	/* Empty */
	| TABLE_SYM ;
        
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grant_privileges:
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	object_privilege_list { }
	| ALL opt_privileges
        { 
          Lex->all_privileges= 1; 
          Lex->grant= GLOBAL_ACLS;
        }
9424
        ;
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opt_privileges:
	/* empty */
	| PRIVILEGES
	;

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object_privilege_list:
	object_privilege
	| object_privilege_list ',' object_privilege;
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9435
object_privilege:
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	SELECT_SYM	{ Lex->which_columns = SELECT_ACL;} opt_column_list {}
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	| INSERT	{ Lex->which_columns = INSERT_ACL;} opt_column_list {}
	| UPDATE_SYM	{ Lex->which_columns = UPDATE_ACL; } opt_column_list {}
	| REFERENCES	{ Lex->which_columns = REFERENCES_ACL;} opt_column_list {}
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	| DELETE_SYM	{ Lex->grant |= DELETE_ACL;}
	| USAGE		{}
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	| INDEX_SYM	{ Lex->grant |= INDEX_ACL;}
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	| ALTER		{ Lex->grant |= ALTER_ACL;}
	| CREATE	{ Lex->grant |= CREATE_ACL;}
	| DROP		{ Lex->grant |= DROP_ACL;}
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	| EXECUTE_SYM	{ Lex->grant |= EXECUTE_ACL;}
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	| RELOAD	{ Lex->grant |= RELOAD_ACL;}
	| SHUTDOWN	{ Lex->grant |= SHUTDOWN_ACL;}
	| PROCESS	{ Lex->grant |= PROCESS_ACL;}
	| FILE_SYM	{ Lex->grant |= FILE_ACL;}
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	| GRANT OPTION  { Lex->grant |= GRANT_ACL;}
	| SHOW DATABASES { Lex->grant |= SHOW_DB_ACL;}
	| SUPER_SYM	{ Lex->grant |= SUPER_ACL;}
	| CREATE TEMPORARY TABLES { Lex->grant |= CREATE_TMP_ACL;}
	| LOCK_SYM TABLES   { Lex->grant |= LOCK_TABLES_ACL; }
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	| REPLICATION SLAVE  { Lex->grant |= REPL_SLAVE_ACL; }
	| REPLICATION CLIENT_SYM { Lex->grant |= REPL_CLIENT_ACL; }
	| CREATE VIEW_SYM { Lex->grant |= CREATE_VIEW_ACL; }
	| SHOW VIEW_SYM { Lex->grant |= SHOW_VIEW_ACL; }
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	| CREATE ROUTINE_SYM { Lex->grant |= CREATE_PROC_ACL; }
	| ALTER ROUTINE_SYM { Lex->grant |= ALTER_PROC_ACL; }
9462
	| CREATE USER { Lex->grant |= CREATE_USER_ACL; }
9463
        | EVENT_SYM { Lex->grant |= EVENT_ACL;}
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	;
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opt_and:
	/* empty */	{}
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	| AND_SYM	{}
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	;

require_list:
	 require_list_element opt_and require_list
	 | require_list_element
	 ;

require_list_element:
	SUBJECT_SYM TEXT_STRING
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	{
	  LEX *lex=Lex;
	  if (lex->x509_subject)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "SUBJECT");
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	    YYABORT;
	  }
	  lex->x509_subject=$2.str;
	}
	| ISSUER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->x509_issuer)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "ISSUER");
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	    YYABORT;
	  }
	  lex->x509_issuer=$2.str;
	}
	| CIPHER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->ssl_cipher)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "CIPHER");
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	    YYABORT;
	  }
	  lex->ssl_cipher=$2.str;
	}
	;
9509

9510
grant_ident:
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	'*'
	  {
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	    LEX *lex= Lex;
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	    lex->current_select->db= lex->thd->db;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
9521
	      YYABORT;
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	    }
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	  }
	| ident '.' '*'
	  {
9526
	    LEX *lex= Lex;
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	    lex->current_select->db = $1.str;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
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	      YYABORT;
	    }
	  }
	| '*' '.' '*'
	  {
9539
	    LEX *lex= Lex;
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	    lex->current_select->db = NULL;
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	    if (lex->grant == GLOBAL_ACLS)
	      lex->grant= GLOBAL_ACLS & ~GRANT_ACL;
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	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
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	      YYABORT;
	    }
	  }
	| table_ident
	  {
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	    LEX *lex=Lex;
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	    if (!lex->current_select->add_table_to_list(lex->thd, $1,NULL,0))
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	      YYABORT;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant =  TABLE_ACLS & ~GRANT_ACL;
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	  }
          ;
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user_list:
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	user  { if (Lex->users_list.push_back($1)) YYABORT;}
	| user_list ',' user
	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;


grant_list:
9572
	grant_user  { if (Lex->users_list.push_back($1)) YYABORT;}
9573
	| grant_list ',' grant_user
9574 9575 9576 9577 9578
	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;
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grant_user:
	user IDENTIFIED_SYM BY TEXT_STRING
	{
	   $$=$1; $1->password=$4;
	   if ($4.length)
	   {
9587
             if (YYTHD->variables.old_passwords)
9588 9589 9590 9591 9592 9593 9594 9595 9596 9597 9598 9599 9600 9601 9602 9603 9604
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
               if (buff)
                 make_scrambled_password_323(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH_323;
             }
             else
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
               if (buff)
                 make_scrambled_password(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH;
             }
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	  }
	}
	| user IDENTIFIED_SYM BY PASSWORD TEXT_STRING
9608
	  { $$= $1; $1->password= $5; }
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	| user
9610
	  { $$= $1; $1->password= null_lex_str; }
9611
        ;
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opt_column_list:
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	/* empty */
	{
	  LEX *lex=Lex;
	  lex->grant |= lex->which_columns;
	}
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	| '(' column_list ')';
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column_list:
	column_list ',' column_list_id
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	| column_list_id;
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column_list_id:
	ident
	{
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	  String *new_str = new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info);
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	  List_iterator <LEX_COLUMN> iter(Lex->columns);
	  class LEX_COLUMN *point;
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	  LEX *lex=Lex;
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	  while ((point=iter++))
	  {
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	    if (!my_strcasecmp(system_charset_info,
                               point->column.ptr(), new_str->ptr()))
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		break;
	  }
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	  lex->grant_tot_col|= lex->which_columns;
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	  if (point)
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	    point->rights |= lex->which_columns;
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	  else
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	    lex->columns.push_back(new LEX_COLUMN (*new_str,lex->which_columns));
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	}
        ;
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require_clause: /* empty */
9649
        | REQUIRE_SYM require_list
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          {
            Lex->ssl_type=SSL_TYPE_SPECIFIED;
          }
9653
        | REQUIRE_SYM SSL_SYM
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          {
            Lex->ssl_type=SSL_TYPE_ANY;
          }
9657
        | REQUIRE_SYM X509_SYM
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          {
            Lex->ssl_type=SSL_TYPE_X509;
          }
	| REQUIRE_SYM NONE_SYM
	  {
	    Lex->ssl_type=SSL_TYPE_NONE;
	  }
9665
          ;
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grant_options:
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	/* empty */ {}
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	| WITH grant_option_list;
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grant_option_list:
	grant_option_list grant_option {}
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	| grant_option {}
        ;
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grant_option:
	GRANT OPTION { Lex->grant |= GRANT_ACL;}
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        | MAX_QUERIES_PER_HOUR ulong_num
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        {
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	  LEX *lex=Lex;
	  lex->mqh.questions=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::QUERIES_PER_HOUR;
9683
	}
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        | MAX_UPDATES_PER_HOUR ulong_num
9685
        {
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	  LEX *lex=Lex;
	  lex->mqh.updates=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::UPDATES_PER_HOUR;
9689
	}
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        | MAX_CONNECTIONS_PER_HOUR ulong_num
9691
        {
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	  LEX *lex=Lex;
	  lex->mqh.conn_per_hour= $2;
	  lex->mqh.specified_limits|= USER_RESOURCES::CONNECTIONS_PER_HOUR;
9695
	}
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        | MAX_USER_CONNECTIONS_SYM ulong_num
9697
        {
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	  LEX *lex=Lex;
          lex->mqh.user_conn= $2;
          lex->mqh.specified_limits|= USER_RESOURCES::USER_CONNECTIONS;
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	}
        ;
9703

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begin:
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	BEGIN_SYM  
        {
	  LEX *lex=Lex;
          lex->sql_command = SQLCOM_BEGIN;
          lex->start_transaction_opt= 0;
        }
        opt_work {}
9712
	;
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opt_work:
	/* empty */ {}
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	| WORK_SYM  {}
9717
        ;
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opt_chain:
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	/* empty */ { $$= (YYTHD->variables.completion_type == 1); }
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	| AND_SYM NO_SYM CHAIN_SYM	{ $$=0; }
	| AND_SYM CHAIN_SYM		{ $$=1; }
	;

opt_release:
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	/* empty */ { $$= (YYTHD->variables.completion_type == 2); }
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	| RELEASE_SYM 			{ $$=1; }
	| NO_SYM RELEASE_SYM 		{ $$=0; }
	;
	
opt_savepoint:
	/* empty */	{}
	| SAVEPOINT_SYM {}
	;

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commit:
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	COMMIT_SYM opt_work opt_chain opt_release
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	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_COMMIT;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
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	}
	;
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rollback:
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	ROLLBACK_SYM opt_work opt_chain opt_release
9748
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
9753
	}
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	| ROLLBACK_SYM opt_work
	  TO_SYM opt_savepoint ident
9756
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK_TO_SAVEPOINT;
	  lex->ident= $5;
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	}
	;

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savepoint:
	SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SAVEPOINT;
	  lex->ident= $2;
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	}
	;

release:
	RELEASE_SYM SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RELEASE_SAVEPOINT;
	  lex->ident= $3;
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	}
	;
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9781
/*
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   UNIONS : glue selects together
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*/


9786
union_clause:
9787
	/* empty */ {}
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	| union_list
	;
9790 9791

union_list:
9792
	UNION_SYM union_option
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	{
	  LEX *lex=Lex;
	  if (lex->exchange)
	  {
	    /* Only the last SELECT can have  INTO...... */
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	    my_error(ER_WRONG_USAGE, MYF(0), "UNION", "INTO");
9799
	    YYABORT;
9800
	  }
9801
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
9802
	  {
9803
            yyerror(ER(ER_SYNTAX_ERROR));
9804 9805
	    YYABORT;
	  }
9806
	  if (mysql_new_select(lex, 0))
9807
	    YYABORT;
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          mysql_init_select(lex);
9809
	  lex->current_select->linkage=UNION_TYPE;
9810 9811 9812
          if ($2) /* UNION DISTINCT - remember position */
            lex->current_select->master_unit()->union_distinct=
                                                      lex->current_select;
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	}
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	select_init
        {
9816 9817 9818 9819
          /*
	    Remove from the name resolution context stack the context of the
            last select in the union.
	  */
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          Lex->pop_context();
        }
9822
	;
9823 9824

union_opt:
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	/* Empty */ { $$= 0; }
	| union_list { $$= 1; }
	| union_order_or_limit { $$= 1; }
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	;
9829

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union_order_or_limit:
9831
	  {
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	    THD *thd= YYTHD;
9833
	    LEX *lex= thd->lex;
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	    DBUG_ASSERT(lex->current_select->linkage != GLOBAL_OPTIONS_TYPE);
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	    SELECT_LEX *sel= lex->current_select;
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	    SELECT_LEX_UNIT *unit= sel->master_unit();
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	    SELECT_LEX *fake= unit->fake_select_lex;
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	    if (fake)
	    {
	      unit->global_parameters= fake;
	      fake->no_table_names_allowed= 1;
	      lex->current_select= fake;
	    }
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	    thd->where= "global ORDER clause";
9845
	  }
9846
	order_or_limit
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          {
	    THD *thd= YYTHD;
9849
	    thd->lex->current_select->no_table_names_allowed= 0;
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	    thd->where= "";
          }
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	;

order_or_limit:
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	order_clause opt_limit_clause_init
	| limit_clause
9857
	;
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union_option:
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	/* empty */ { $$=1; }
	| DISTINCT  { $$=1; }
	| ALL       { $$=0; }
        ;
9864

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singlerow_subselect:
	subselect_start singlerow_subselect_init
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	subselect_end
	{
	  $$= $2;
	};
9871

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singlerow_subselect_init:
9873
	select_init2
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	{
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	  $$= new Item_singlerow_subselect(Lex->current_select->
					   master_unit()->first_select());
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	};
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exists_subselect:
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	subselect_start exists_subselect_init
	subselect_end
	{
	  $$= $2;
	};
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exists_subselect_init:
9887
	select_init2
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	{
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	  $$= new Item_exists_subselect(Lex->current_select->master_unit()->
					first_select());
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	};
9892

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in_subselect:
  subselect_start in_subselect_init
  subselect_end
  {
    $$= $2;
  };

in_subselect_init:
9901
  select_init2
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  {
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    $$= Lex->current_select->master_unit()->first_select();
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  };

9906
subselect_start:
9907
	'(' SELECT_SYM
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	{
9909
	  LEX *lex=Lex;
9910
	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
9911 9912
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
9913 9914
	  {
            yyerror(ER(ER_SYNTAX_ERROR));
9915 9916
	    YYABORT;
	  }
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	  if (mysql_new_select(Lex, 1))
	    YYABORT;
	};
9920 9921

subselect_end:
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	')'
	{
	  LEX *lex=Lex;
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          lex->pop_context();
9926
	  lex->current_select = lex->current_select->return_after_parsing();
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	};
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9929 9930 9931 9932 9933 9934 9935 9936 9937 9938 9939 9940 9941 9942 9943 9944 9945 9946 9947 9948 9949 9950 9951 9952 9953 9954 9955 9956 9957 9958 9959 9960 9961 9962 9963 9964 9965 9966 9967 9968 9969 9970 9971 9972 9973 9974 9975 9976 9977 9978 9979 9980 9981 9982 9983 9984 9985 9986 9987 9988 9989 9990 9991 9992 9993 9994 9995 9996 9997 9998 9999 10000 10001 10002 10003 10004 10005 10006 10007 10008 10009 10010 10011 10012 10013 10014 10015 10016 10017 10018 10019 10020 10021 10022 10023 10024 10025 10026 10027 10028 10029 10030 10031 10032 10033 10034 10035 10036 10037 10038 10039 10040 10041
definer:
	get_definer
	{
	  THD *thd= YYTHD;
	  
	  if (! (thd->lex->definer= create_definer(thd, &$1->user, &$1->host)))
	    YYABORT;
	}
	;

get_definer:
	opt_current_definer
	{
	  THD *thd= YYTHD;
          
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
	    YYABORT;

	  if (get_default_definer(thd, $$))
	    YYABORT;
	}
	| DEFINER_SYM EQ ident_or_text '@' ident_or_text
	{
	  if (!($$=(LEX_USER*) YYTHD->alloc(sizeof(st_lex_user))))
	    YYABORT;

	  $$->user= $3;
	  $$->host= $5;
	}
	;

opt_current_definer:
	/* empty */
	| DEFINER_SYM EQ CURRENT_USER optional_braces
	;

/**************************************************************************

 CREATE VIEW statement options.

**************************************************************************/

view_replace_or_algorithm:
	view_replace
	{}
	| view_replace view_algorithm
	{}
	| view_algorithm
	{}
	;

view_replace:
	OR_SYM REPLACE
	{ Lex->create_view_mode= VIEW_CREATE_OR_REPLACE; }
	;

view_algorithm:
	ALGORITHM_SYM EQ UNDEFINED_SYM
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED; }
	| ALGORITHM_SYM EQ MERGE_SYM
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_MERGE; }
	| ALGORITHM_SYM EQ TEMPTABLE_SYM
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_TMPTABLE; }
	;

view_algorithm_opt:
	/* empty */
	{ Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED; }
	| view_algorithm
	{}
	;

view_or_trigger:
	definer view_or_trigger_tail
	{}
	| view_replace_or_algorithm definer view_tail
	{}
	;

view_or_trigger_tail:
	view_tail
	{}
	| trigger_tail
	{}
	;

view_suid:
	/* empty */
	{ Lex->create_view_suid= TRUE; }
	| SQL_SYM SECURITY_SYM DEFINER_SYM
	{ Lex->create_view_suid= TRUE; }
	| SQL_SYM SECURITY_SYM INVOKER_SYM
	{ Lex->create_view_suid= FALSE; }
	;

view_tail:
	view_suid VIEW_SYM table_ident
	{
	  THD *thd= YYTHD;
	  LEX *lex= thd->lex;
	  lex->sql_command= SQLCOM_CREATE_VIEW;
	  lex->create_view_start= thd->query;
	  /* first table in list is target VIEW name */
	  if (!lex->select_lex.add_table_to_list(thd, $3, NULL, 0))
	    YYABORT;
	}
	view_list_opt AS view_select view_check_option
	{}
	;

view_list_opt:
	/* empty */
	{}
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	| '(' view_list ')'
	;

view_list:
	ident 
	  {
	    Lex->view_list.push_back((LEX_STRING*)
				     sql_memdup(&$1, sizeof(LEX_STRING)));
	  }
	| view_list ',' ident
	  {
	    Lex->view_list.push_back((LEX_STRING*)
				     sql_memdup(&$3, sizeof(LEX_STRING)));
	  }
	;

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view_select:
	SELECT_SYM remember_name select_init2
	{
	  Lex->create_view_select_start= $2;
	}
	| '(' remember_name select_paren ')' union_opt
	{
	  Lex->create_view_select_start= $2;
	}
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	;

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view_check_option:
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	/* empty */
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	{ Lex->create_view_check= VIEW_CHECK_NONE; }
	| WITH CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_CASCADED; }
	| WITH CASCADED CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_CASCADED; }
	| WITH LOCAL_SYM CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_LOCAL; }
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	;
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/**************************************************************************

 CREATE TRIGGER statement parts.

**************************************************************************/

trigger_tail:
	TRIGGER_SYM remember_name sp_name trg_action_time trg_event 
	ON table_ident FOR_SYM EACH_SYM ROW_SYM
	{
	  LEX *lex= Lex;
	  sp_head *sp;
	 
	  if (lex->sphead)
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	  {
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	    my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "TRIGGER");
	    YYABORT;
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	  }
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	  if (!(sp= new sp_head()))
	    YYABORT;
	  sp->reset_thd_mem_root(YYTHD);
	  sp->init(lex);
	
	  lex->trigger_definition_begin= $2;
	  
	  sp->m_type= TYPE_ENUM_TRIGGER;
	  lex->sphead= sp;
	  lex->spname= $3;
	  /*
	    We have to turn of CLIENT_MULTI_QUERIES while parsing a
	    stored procedure, otherwise yylex will chop it into pieces
	    at each ';'.
	  */
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	  $<ulong_num>$= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
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	  YYTHD->client_capabilities &= ~CLIENT_MULTI_QUERIES;
	  
	  bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  lex->sphead->m_chistics= &lex->sp_chistics;
	  lex->sphead->m_body_begin= lex->ptr;
	}
	sp_proc_stmt
	{
	  LEX *lex= Lex;
	  sp_head *sp= lex->sphead;
	  
	  lex->sql_command= SQLCOM_CREATE_TRIGGER;
	  sp->init_strings(YYTHD, lex, $3);
	  /* Restore flag if it was cleared above */
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	  YYTHD->client_capabilities |= $<ulong_num>11;
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	  sp->restore_thd_mem_root(YYTHD);
	
	  if (sp->is_not_allowed_in_function("trigger"))
	      YYABORT;
	
	  /*
	    We have to do it after parsing trigger body, because some of
	    sp_proc_stmt alternatives are not saving/restoring LEX, so
	    lex->query_tables can be wiped out.
	    
	    QQ: What are other consequences of this?
	    
	    QQ: Could we loosen lock type in certain cases ?
	  */
	  if (!lex->select_lex.add_table_to_list(YYTHD, $7, 
	                                         (LEX_STRING*) 0,
	                                         TL_OPTION_UPDATING,
	                                         TL_WRITE))
	    YYABORT;
	}
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	;

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/*************************************************************************/
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xa: XA_SYM begin_or_start xid opt_join_or_resume
      {
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        Lex->sql_command = SQLCOM_XA_START;
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      }
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    | XA_SYM END xid opt_suspend
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      {
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        Lex->sql_command = SQLCOM_XA_END;
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      }
    | XA_SYM PREPARE_SYM xid
      {
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        Lex->sql_command = SQLCOM_XA_PREPARE;
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      }
    | XA_SYM COMMIT_SYM xid opt_one_phase
      {
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        Lex->sql_command = SQLCOM_XA_COMMIT;
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      }
    | XA_SYM ROLLBACK_SYM xid
      {
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        Lex->sql_command = SQLCOM_XA_ROLLBACK;
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      }
    | XA_SYM RECOVER_SYM
      {
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        Lex->sql_command = SQLCOM_XA_RECOVER;
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      }
    ;

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xid: text_string
     {
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       YYERROR_UNLESS($1->length() <= MAXGTRIDSIZE);
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       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
         YYABORT;
       Lex->xid->set(1L, $1->ptr(), $1->length(), 0, 0);
     }
     | text_string ',' text_string
     {
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       YYERROR_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
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       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
         YYABORT;
       Lex->xid->set(1L, $1->ptr(), $1->length(), $3->ptr(), $3->length());
     }
     | text_string ',' text_string ',' ulong_num
     {
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       YYERROR_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
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       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
         YYABORT;
       Lex->xid->set($5, $1->ptr(), $1->length(), $3->ptr(), $3->length());
     }
     ;
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begin_or_start:   BEGIN_SYM {}
    |             START_SYM {}
    ;

opt_join_or_resume:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | JOIN_SYM              { Lex->xa_opt=XA_JOIN;        }
    | RESUME_SYM            { Lex->xa_opt=XA_RESUME;      }
    ;

opt_one_phase:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | ONE_SYM PHASE_SYM     { Lex->xa_opt=XA_ONE_PHASE;   }
    ;

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opt_suspend:
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    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | SUSPEND_SYM           { Lex->xa_opt=XA_SUSPEND;     }
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      opt_migrate
    ;

opt_migrate:
    /* nothing */           { }
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    | FOR_SYM MIGRATE_SYM   { Lex->xa_opt=XA_FOR_MIGRATE; }
    ;

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install:
  INSTALL_SYM PLUGIN_SYM IDENT_sys SONAME_SYM TEXT_STRING_sys
  {
    LEX *lex= Lex;
    lex->sql_command= SQLCOM_INSTALL_PLUGIN;
    lex->comment= $3;
    lex->ident= $5;
  };
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uninstall:
  UNINSTALL_SYM PLUGIN_SYM IDENT_sys
  {
    LEX *lex= Lex;
    lex->sql_command= SQLCOM_UNINSTALL_PLUGIN;
    lex->comment= $3;
  };