sql_yacc.yy 220 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 <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 TEST_ASSERT(A)                  \
  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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  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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  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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%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
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%type <lex_str_ptr>
	opt_table_alias

%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 opt_var_type
        opt_var_ident_type 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_type 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 <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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	using_list 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
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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 <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>
	key_usage_list

%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

%type <symbol> FUNC_ARG0 FUNC_ARG1 FUNC_ARG2 FUNC_ARG3 keyword

%type <lex_user> user grant_user

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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 opt_view_list view_list or_replace algorithm
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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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END_OF_INPUT
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%type <NONE> call sp_proc_stmts sp_proc_stmts1 sp_proc_stmt
%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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	| kill
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	| load
	| lock
	| optimize
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        | keycache
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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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	| 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 (thd->command == COM_PREPARE)
          {
            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 (thd->command == COM_PREPARE)
          {
            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 (thd->command == COM_PREPARE)
          {
            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 ident_or_text
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       {
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	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_HELP;
	  lex->help_arg= $2.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;
	  }
	   '(' key_list ')'
	  {
	    LEX *lex=Lex;

	    lex->key_list.push_back(new Key($2,$4.str, $5, 0, lex->col_list));
	    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 ';'.
	     */
	    sp->m_old_cmq= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
	    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;
	    /* Restore flag if it was cleared above */
	    if (sp->m_old_cmq)
	      YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
	    sp->restore_thd_mem_root(YYTHD);
	  }
	| CREATE or_replace algorithm VIEW_SYM table_ident
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_CREATE_VIEW;
	    lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
	    /* first table in list is target VIEW name */
	    if (!lex->select_lex.add_table_to_list(thd, $5, NULL, 0))
              YYABORT;
	  }
	  opt_view_list AS select_init check_option
	  {}
        | CREATE TRIGGER_SYM ident 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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              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "TRIGGER");
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              YYABORT;
            }
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            if (!(sp= new sp_head()))
              YYABORT;
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            sp->reset_thd_mem_root(YYTHD);
            sp->init(lex);
            
            sp->m_type= TYPE_ENUM_TRIGGER;
            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 ';'.
            */
            sp->m_old_cmq= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
            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->tok_start;
          }
          sp_proc_stmt
          {
            LEX *lex= Lex;
            sp_head *sp= lex->sphead;
            
            lex->sql_command= SQLCOM_CREATE_TRIGGER;
            sp->init_strings(YYTHD, lex, NULL);
            /* Restore flag if it was cleared above */
            if (sp->m_old_cmq)
              YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
            sp->restore_thd_mem_root(YYTHD);

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            lex->ident= $3;
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            /*
              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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	| CREATE USER clear_privileges grant_list
	  {
	    Lex->sql_command = SQLCOM_CREATE_USER;
          }
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	;

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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:
	  RETURNS_SYM udf_type UDF_SONAME_SYM TEXT_STRING_sys
	  {
	    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 ';'.
	     */
	    sp->m_old_cmq= YYTHD->client_capabilities & CLIENT_MULTI_QUERIES;
	    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,
				     0))
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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;
            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->m_multi_results)
	    {
	      my_message(ER_SP_NO_RETSET_IN_FUNC, ER(ER_SP_NO_RETSET_IN_FUNC),
	                 MYF(0));
	      YYABORT;
	    }
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	    if (sp->check_backpatch(YYTHD))
	      YYABORT;
	    lex->sql_command= SQLCOM_CREATE_SPFUNCTION;
	    sp->init_strings(YYTHD, lex, lex->spname);
	    /* Restore flag if it was cleared above */
	    if (sp->m_old_cmq)
	      YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
	    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_to_hash(&lex->spprocs, $2);
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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 
          { 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;
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	    Item *it= $5;
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	    for (uint i = max-$2 ; i < max ; i++)
	    {
	      ctx->set_type(i, type);
	      if (! it)
	        ctx->set_isset(i, FALSE);
	      else
	      {
	        sp_instr_set *in= new sp_instr_set(lex->sphead->instructions(),
	                                           ctx,
						   ctx->pvar_context2index(i),
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                                                   it, type, lex,
                                                   (i == max - 1));
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                /*
                  The last instruction is assigned to be responsible for
                  freeing LEX.
                */
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	        lex->sphead->add_instr(in);
	        ctx->set_isset(i, TRUE);
		ctx->set_default(i, it);
	      }
	    }
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            lex->sphead->restore_lex(YYTHD);
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	    $$.vars= $2;
	    $$.conds= $$.hndlrs= $$.curs= 0;
	  }
	| 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));
	    sp->m_in_handler= TRUE;
	  }
	  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);
	    sp->m_in_handler= FALSE;
	    $$.vars= $$.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;
	    }
            i= new sp_instr_cpush(sp->instructions(), ctx, $5);
	    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:
	  {
	    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;

	    if ((lex->sql_command == SQLCOM_SELECT && !lex->result) ||
	        sp_multi_results_command(lex->sql_command))
	    {
	      /* We maybe have one or more SELECT without INTO */
	      sp->m_multi_results= TRUE;
	    }
	    if (lex->sql_command == SQLCOM_CHANGE_DB)
	    { /* "USE db" doesn't work in a procedure */
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	      my_message(ER_SP_NO_USE, ER(ER_SP_NO_USE), MYF(0));
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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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          | RETURN_SYM 
          { 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);
	      sp->m_has_return= TRUE;
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	    }
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	    sp->restore_lex(YYTHD);
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	  }
	| IF sp_if END IF {}
	| CASE_SYM WHEN_SYM
	  {
	    Lex->sphead->m_simple_case= FALSE;
	  }
	  sp_case END CASE_SYM {}
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        | CASE_SYM
          { 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);
	    lex->sphead->m_simple_case= TRUE;
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            lex->sphead->restore_lex(YYTHD);
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	  }
	  sp_case END CASE_SYM
	  {
	    Lex->spcont->pop_pvar();
	  }
	| sp_labeled_control
	  {}
	| { /* Unlabeled controls get a secret label. */
	    LEX *lex= Lex;

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

	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	| LEAVE_SYM IDENT
	  {
	    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);
	    }
	  }
	| ITERATE_SYM IDENT
	  {
	    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);
	    }
	  }
	| LABEL_SYM IDENT
	  {
	    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);
	    }
	  }
	| GOTO_SYM IDENT
	  {
	    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);
	    }
	  }
	| OPEN_SYM ident
	  {
	    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);
	  }
	| FETCH_SYM sp_opt_fetch_noise ident INTO
	  {
	    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
	  { }
	| CLOSE_SYM ident
	  {
	    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);
	      spv->isset= TRUE;
	    }
	  }
	|
	  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);
	      spv->isset= TRUE;
	    }
	  }
	;

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;

	    if (! sp->m_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;
	      Item *var= (Item*) new Item_splocal(ivar, 
						  ctx->current_pvars()-1);
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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:
	  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  */    { $$= null_lex_str; }
        | IDENT         { $$= $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 {}
        | opt_create_table_options create3 {}
        | 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:
        field_list ')' opt_create_table_options create3 {}
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	|  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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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	{ Lex->create_info.table_options|= $3 ? HA_OPTION_PACK_KEYS : HA_OPTION_NO_PACK_KEYS; Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;}
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	| 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	{ Lex->create_info.raid_type= $3; Lex->create_info.used_fields|= HA_CREATE_USED_RAID;}
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	| RAID_CHUNKS opt_equal ulong_num	{ Lex->create_info.raid_chunks= $3; Lex->create_info.used_fields|= HA_CREATE_USED_RAID;}
	| RAID_CHUNKSIZE opt_equal ulong_num	{ Lex->create_info.raid_chunksize= $3*RAID_BLOCK_SIZE; Lex->create_info.used_fields|= HA_CREATE_USED_RAID;}
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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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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
	{
	  $$ = ha_resolve_by_name($1.str,$1.length);
	  if ($$ == DB_TYPE_UNKNOWN) {
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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 ')'
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	  {
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	    LEX *lex=Lex;
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	    lex->key_list.push_back(new Key($1,$2, $3, 0, lex->col_list));
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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;
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	    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 */
	  }
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	| 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 */
	  }
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	| 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_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	{ $$=$2; }
	;
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field_spec:
	field_ident
	 {
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	   LEX *lex=Lex;
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	   lex->length=lex->dec=0; lex->type=0;
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	   lex->default_value= lex->on_update_value= 0;
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           lex->comment=null_lex_str;
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	   lex->charset=NULL;
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	 }
	type opt_attribute
	{
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	  LEX *lex=Lex;
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	  if (add_field_to_list(lex->thd, $1.str,
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				(enum enum_field_types) $3,
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				lex->length,lex->dec,lex->type,
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				lex->default_value, lex->on_update_value, 
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                                &lex->comment,
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				lex->change,&lex->interval_list,lex->charset,
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				lex->uint_geom_type))
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	    YYABORT;
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	};
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type:
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	int_type opt_len field_options	{ $$=$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 ')'		{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| nchar				{ Lex->length=(char*) "1";
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					  $$=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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					  $$= MYSQL_TYPE_VARCHAR; }
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	| nvarchar '(' NUM ')'		{ Lex->length=$3.str;
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					  $$= 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; }
2864
	| TIMESTAMP opt_len
2865
	  {
2866
	    if (YYTHD->variables.sql_mode & MODE_MAXDB)
2867 2868
	      $$=FIELD_TYPE_DATETIME;
	    else
2869 2870 2871 2872 2873
            {
              /* 
                Unlike other types TIMESTAMP fields are NOT NULL by default.
              */
              Lex->type|= NOT_NULL_FLAG;
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	      $$=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		{ $$=FIELD_TYPE_TINY_BLOB; }
2902
	| TEXT_SYM opt_len opt_binary	{ $$=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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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| ENUM {Lex->interval_list.empty();} '(' string_list ')' opt_binary
2912
	  { $$=FIELD_TYPE_ENUM; }
2913
	| SET { Lex->interval_list.empty();} '(' string_list ')' opt_binary
2914
	  { $$=FIELD_TYPE_SET; }
2915
	| LONG_SYM opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| SERIAL_SYM
	  {
	    $$=FIELD_TYPE_LONGLONG;
	    Lex->type|= (AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNSIGNED_FLAG |
		         UNIQUE_FLAG);
	  }
2922
	;
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spatial_type:
	GEOMETRY_SYM	      { $$= Field::GEOM_GEOMETRY; }
	| GEOMETRYCOLLECTION  { $$= Field::GEOM_GEOMETRYCOLLECTION; }
	| POINT_SYM           { $$= Field::GEOM_POINT; }
	| 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; }
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	| SERIAL_SYM DEFAULT VALUE_SYM
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	  { 
	    LEX *lex=Lex;
	    lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNIQUE_FLAG; 
3023
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3024 3025 3026 3027 3028
	  }
	| opt_primary KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= PRI_KEY_FLAG | NOT_NULL_FLAG; 
3029
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3030 3031 3032 3033 3034
	  }
	| UNIQUE_SYM	  
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_FLAG; 
3035
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3036 3037 3038 3039 3040
	  }
	| UNIQUE_SYM KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_KEY_FLAG; 
3041
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3042
	  }
3043
	| COMMENT_SYM TEXT_STRING_sys { Lex->comment= $2; }
3044
	| BINARY { Lex->type|= BINCMP_FLAG; }
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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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charset_name:
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	ident_or_text
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	{
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	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))))
3074
	  {
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	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    YYABORT;
	  }
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	}
	| BINARY { $$= &my_charset_bin; }
	;
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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)))
	  {
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	    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; } ;

3104
collation_name:
3105
	ident_or_text
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	{
	  if (!($$=get_charset_by_name($1.str,MYF(0))))
	  {
3109
	    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			{ Lex->charset=&my_charset_latin1; }
	| BYTE_SYM			{ Lex->charset=&my_charset_bin; }
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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
3145
	;
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references:
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	REFERENCES table_ident
	{
3150
	  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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	};
3158

3159
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)); };
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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:
3184 3185 3186 3187
	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    { $$= (int) foreign_key::FK_OPTION_DEFAULT;  };
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key_type:
3191
	key_or_index			    { $$= 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:
3239
	/* 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			{ $$=new key_part_spec($1.str); }
3257 3258 3259 3260 3261
	| ident '(' NUM ')'	
        {
          int key_part_len= atoi($3.str);
          if (!key_part_len)
          {
3262
            my_error(ER_KEY_PART_0, MYF(0), $1.str);
3263 3264 3265
          }
          $$=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; };
3274

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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
	{
3286
	  THD *thd= YYTHD;
3287
	  LEX *lex= thd->lex;
3288 3289 3290
	  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();
3297
          lex->select_lex.init_order();
3298
	  lex->select_lex.db=lex->name=0;
3299
	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
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	  lex->create_info.db_type= DB_TYPE_DEFAULT;
3301
	  lex->create_info.default_table_charset= NULL;
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	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
3303
	  lex->alter_info.reset();
3304
	  lex->alter_info.flags= 0;
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	}
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	alter_list
	{}
3308
	| 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
3314 3315 3316
	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_ALTER_DB;
3317
	    lex->name= $3;
3318 3319 3320 3321 3322
	  }
	| ALTER PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

3323 3324 3325 3326 3327
	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
	      YYABORT;
	    }
3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339
	    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;
3340

3341 3342 3343 3344 3345
	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
	      YYABORT;
	    }
3346 3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_FUNCTION;
	    lex->spname= $3;
	  }
	| ALTER algorithm VIEW_SYM table_ident
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_CREATE_VIEW;
	    lex->create_view_mode= VIEW_ALTER;
	    lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
	    /* first table in list is target VIEW name */
	    lex->select_lex.add_table_to_list(thd, $4, NULL, 0);
	  }
	  opt_view_list AS select_init check_option
	  {}
	;
3368

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ident_or_empty:
	/* empty */  { $$= 0; }
	| ident      { $$= $1.str; };

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alter_list:
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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_item
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	| alter_list ',' alter_list_item;
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add_column:
3380
	ADD opt_column
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	{
	  LEX *lex=Lex;
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	  lex->change=0;
	  lex->alter_info.flags|= ALTER_ADD_COLUMN;
3385
	};
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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;
3392
	  }
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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;
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	     lex->change= $3.str;
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	     lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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	  }
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          field_spec opt_place
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        | MODIFY_SYM opt_column field_ident
          {
            LEX *lex=Lex;
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            lex->length=lex->dec=0; lex->type=0;
3408
            lex->default_value= lex->on_update_value= 0;
3409
            lex->comment=null_lex_str;
3410
	    lex->charset= NULL;
3411
	    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,
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				  $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,
3430
                                                               $3.str));
3431
	    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));
3467
	    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));
3474
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
3476
	| RENAME opt_to table_ident
3477
	  {
3478
	    LEX *lex=Lex;
3479
	    lex->select_lex.db=$3->db.str;
3480
	    lex->name= $3->table.str;
3481 3482 3483
            if (check_table_name($3->table.str,$3->table.length) ||
                $3->db.str && check_db_name($3->db.str))
            {
3484
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3->table.str);
3485 3486
              YYABORT;
            }
3487
	    lex->alter_info.flags|= ALTER_RENAME;
3488
	  }
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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))
	    {
3499 3500
	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $5->name, $4->csname);
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	      YYABORT;
	    }
3503
	    LEX *lex= Lex;
3504
	    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);
3508
	    lex->alter_info.flags|= ALTER_CONVERT;
3509
	  }
3510
        | create_table_options_space_separated
3511 3512
	  {
	    LEX *lex=Lex;
3513
	    lex->alter_info.flags|= ALTER_OPTIONS;
3514
	  }
3515 3516 3517 3518
	| FORCE_SYM
	  {
	    Lex->alter_info.flags|= ALTER_FORCE;
	   }
3519
	| order_clause
3520 3521
	  {
	    LEX *lex=Lex;
3522
	    lex->alter_info.flags|= ALTER_ORDER;
3523
	  };
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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	{}
3548
	| EQ		{}
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	| AS		{};
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/*
3552
  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
        {
           Lex->sql_command = SQLCOM_BEGIN;
           Lex->start_transaction_opt= $3;
        }
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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;
        }
3607
        ;
3608

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slave_thread_opts:
3610 3611
	{ Lex->slave_thd_opt= 0; }
	slave_thread_opt_list
3612
        {}
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	;
3614 3615

slave_thread_opt_list:
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	slave_thread_opt
3617 3618
	| slave_thread_opt_list ',' slave_thread_opt
	;
3619 3620

slave_thread_opt:
3621
	/*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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	;
3625

3626 3627 3628 3629 3630 3631 3632 3633 3634 3635
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));
3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648
               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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3669 3670 3671 3672 3673 3674
checksum:
        CHECKSUM_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECKSUM;
	}
3675 3676
	table_list opt_checksum_type
        {}
3677 3678
	;

3679 3680 3681 3682 3683 3684
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:
3686
	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;
3690
           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
3693 3694 3695
	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 {};
3704

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mi_repair_type:
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	QUICK          { Lex->check_opt.flags|= T_QUICK; }
3707
	| 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:
3711
	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;
3715
           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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	}
3735 3736 3737
	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:
3755
	OPTIMIZE opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   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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	}
3762 3763 3764
	table_list opt_mi_check_type
	{}
	;
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3766 3767 3768
opt_no_write_to_binlog:
	/* empty */        { $$= 0; }
	| NO_WRITE_TO_BINLOG  { $$= 1; }
3769
	| LOCAL_SYM  { $$= 1; }
3770 3771
	;

3772 3773 3774 3775 3776
rename:
	RENAME table_or_tables
	{
	   Lex->sql_command=SQLCOM_RENAME_TABLE;
	}
3777 3778
	table_to_table_list
	{}
3779 3780 3781 3782
	| RENAME USER clear_privileges rename_list
          {
	    Lex->sql_command = SQLCOM_RENAME_USER;
          }
3783
	;
3784

3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797
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;
          }
        ;

3798 3799
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
3804
	{
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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))
3811
	    YYABORT;
3812
	};
3813

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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;
3818
          lex->sql_command= SQLCOM_ASSIGN_TO_KEYCACHE;
3819
	  lex->ident= $5;
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        }
        ;

keycache_list:
        assign_to_keycache
        | keycache_list ',' assign_to_keycache;

assign_to_keycache:
3828
        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(),
3835
                                      (List<String> *)0))
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            YYABORT;
        }
        ;

3840 3841 3842
key_cache_name:
	ident	   { $$= $1; }
	| DEFAULT  { $$ = default_key_cache_base; }
3843
	;
3844

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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;
	}
	;

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cache_keys_spec:
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        { 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:
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	/* empty */	{ Lex->select_lex.use_index_ptr= 0; }
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	| 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;
	  lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
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	}
	;
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/* Need select_init2 for subselects. */
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select_init:
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	SELECT_SYM select_init2
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	|
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	'(' select_paren ')' union_opt;

select_paren:
	SELECT_SYM select_part2
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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->set_braces(1))
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	    {
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	      yyerror(ER(ER_SYNTAX_ERROR));
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	      YYABORT;
	    }
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	  if (sel->linkage == UNION_TYPE &&
	      !sel->master_unit()->first_select()->braces)
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	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
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            /* 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 ')';
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select_init2:
	select_part2
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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 (lex->current_select->set_braces(0))
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	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
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	  if (sel->linkage == UNION_TYPE &&
	      sel->master_unit()->first_select()->braces)
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	  {
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	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
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	}
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	union_clause
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	;

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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);
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	  lex->current_select->parsing_place= SELECT_LIST;
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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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	select_into select_lock_type;
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select_into:
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	opt_order_clause opt_limit_clause {}
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        | into
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	| select_from
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	| 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 opt_limit_clause
          /* 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 :) */
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	;
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select_options:
	/* empty*/
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	| select_option_list
	  {
	    if (test_all_bits(Select->options, SELECT_ALL | SELECT_DISTINCT))
	    {
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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:
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	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;
	  }
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	| 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; }
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	;
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select_lock_type:
	/* empty */
	| FOR_SYM UPDATE_SYM
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	  {
	    LEX *lex=Lex;
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	    lex->current_select->set_lock_for_tables(TL_WRITE);
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	    lex->safe_to_cache_query=0;
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	  }
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	| LOCK_SYM IN_SYM SHARE_SYM MODE_SYM
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	  {
	    LEX *lex=Lex;
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	    lex->current_select->
	      set_lock_for_tables(TL_READ_WITH_SHARED_LOCKS);
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	    lex->safe_to_cache_query=0;
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	  }
	;
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select_item_list:
	  select_item_list ',' select_item
	| select_item
	| '*'
	  {
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	    THD *thd= YYTHD;
	    if (add_item_to_list(thd, new Item_field(NULL, NULL, "*")))
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	      YYABORT;
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	    (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);
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	    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 ')'
	  { $4->push_front($1); $$= new Item_func_in(*$4); }
	| bit_expr not IN_SYM '(' expr_list ')'
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	  { $5->push_front($1); $$= negate_expression(YYTHD, new Item_func_in(*$5)); }
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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
	  { $$= new Item_func_between($1,$3,$5); }
	| bit_expr not BETWEEN_SYM bit_expr AND_SYM predicate
	  { $$= negate_expression(YYTHD, new Item_func_between($1,$4,$6)); }
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	| bit_expr SOUNDS_SYM LIKE bit_expr
	  { $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4)); }
	| bit_expr LIKE simple_expr opt_escape
          { $$= new Item_func_like($1,$3,$4); }
	| bit_expr not LIKE simple_expr opt_escape
          { $$= new Item_func_not(new Item_func_like($1,$4,$5)); }
	| bit_expr REGEXP bit_expr	{ $$= 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; }
        ;

4255
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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	  {
	    $$= new Item_func_get_user_var($2);
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	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
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	  }
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	| '@' '@' opt_var_ident_type ident_or_text opt_component
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	  {
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            if ($4.str && $5.str && check_reserved_words(&$4))
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
4292
	    if (!($$= get_system_var(YYTHD, (enum_var_type) $3, $4, $5)))
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	      YYABORT;
4294
	    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 '}'	{ $$= $3; }
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        | MATCH ident_list_arg AGAINST '(' bit_expr fulltext_options ')'
4318
          { $2->push_front($5);
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            Select->add_ftfunc_to_list((Item_func_match*)
                                        ($$=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;
	    }
	    $$= new Item_default_value($3);
	  }
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	| VALUES '(' simple_ident ')'
	  { $$= new Item_insert_value($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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	| 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 ')'
4425
	  { $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
4433
	  { $$= new Item_func_curdate_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME optional_braces
4435
	  { $$= new Item_func_curtime_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME '(' expr ')'
4437
	  {
4438
	    $$= new Item_func_curtime_local($3);
4439
	    Lex->safe_to_cache_query=0;
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	  }
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	| CURRENT_USER optional_braces
4442
          { $$= 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 '(' ')'
4448
	  {
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	    $$= new Item_func_database();
4450
            Lex->safe_to_cache_query=0;
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	  }
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	| DATE_SYM '(' expr ')'
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	  { $$= new Item_date_typecast($3); }
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	| DAY_SYM '(' expr ')'
	  { $$= new Item_func_dayofmonth($3); }
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	| ELT_FUNC '(' expr ',' expr_list ')'
4457
	  { $5->push_front($3); $$= 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);
4463
	    Lex->uncacheable(UNCACHEABLE_RAND);
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	  }
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	| ENCRYPT '(' expr ',' expr ')'   { $$= new Item_func_encrypt($3,$5); }
4466
	| DECODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	  { $$= new Item_func_decode($3,$5.str); }
4468
	| 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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	    $$= new Item_func_date_format (new Item_func_from_unixtime($3),$5,0);
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	  }
	| FIELD_FUNC '(' expr ',' expr_list ')'
4493
	  { $5->push_front($3); $$= new Item_func_field(*$5); }
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	| geometry_function
	  {
#ifdef HAVE_SPATIAL
	    $$= $1;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
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	    YYABORT;
#endif
	  }
4504
	| GET_FORMAT '(' date_time_type  ',' expr ')'
4505
	  { $$= 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 ')'
	  { $$= new Item_func_insert($3,$5,$7,$9); }
4512
	| interval_expr interval '+' expr
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	  /* we cannot put interval before - */
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	  { $$= new Item_date_add_interval($4,$1,$2,0); }
	| interval_expr
	  {
            if ($1->type() != Item::ROW_ITEM)
            {
4519
              yyerror(ER(ER_SYNTAX_ERROR));
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              YYABORT;
            }
            $$= new Item_func_interval((Item_row *)$1);
          }
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	| LAST_INSERT_ID '(' ')'
	  {
4526
	    $$= new Item_func_last_insert_id();
4527
	    Lex->safe_to_cache_query= 0;
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	  }
	| LAST_INSERT_ID '(' expr ')'
	  {
4531
	    $$= new Item_func_last_insert_id($3);
4532
	    Lex->safe_to_cache_query= 0;
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	  }
	| LEFT '(' expr ',' expr ')'
	  { $$= 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); }
4544
	| LOG_SYM '(' expr ')'
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	  { $$= new Item_func_log($3); }
4546
	| LOG_SYM '(' expr ',' expr ')'
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	  { $$= new Item_func_log($3, $5); }
4548
	| MASTER_POS_WAIT '(' expr ',' expr ')'
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	  {
4550
	    $$= new Item_master_pos_wait($3, $5);
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	    Lex->safe_to_cache_query=0;
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		  }
4553
	| MASTER_POS_WAIT '(' expr ',' expr ',' expr ')'
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	  {
4555
	    $$= new Item_master_pos_wait($3, $5, $7);
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	    Lex->safe_to_cache_query=0;
4557
	  }
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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
4567
	  { $$= new Item_func_now_local(); Lex->safe_to_cache_query=0;}
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	| NOW_SYM '(' expr ')'
4569
	  { $$= new Item_func_now_local($3); Lex->safe_to_cache_query=0;}
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	| PASSWORD '(' expr ')'
4571
	  {
4572 4573
	    $$= YYTHD->variables.old_passwords ?
              (Item *) new Item_func_old_password($3) :
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	      (Item *) new Item_func_password($3);
	  }
	| OLD_PASSWORD '(' expr ')'
	  { $$=  new Item_func_old_password($3); }
4578
	| 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 ')'
4583
	  { $$= new Item_func_rand($3); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| RAND '(' ')'
4585
	  { $$= 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 ')'
	  { $$= new Item_func_substr_index($3,$5,$7); }
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	| TIME_SYM '(' expr ')'
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	  { $$= 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); }
4628
	| TRIM '(' TRAILING expr FROM expr ')'
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	  { $$= new Item_func_rtrim($6,$4); }
4630
	| TRIM '(' BOTH expr FROM expr ')'
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	  { $$= 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); }
4642
	| ident '.' ident '(' udf_expr_list ')'
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	  {
4644
	    LEX *lex= Lex;
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	    sp_name *name= new sp_name($1, $3);

	    name->init_qname(YYTHD);
4648
	    sp_add_to_hash(&lex->spfuns, name);
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	    if ($5)
	      $$= new Item_func_sp(name, *$5);
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	    else
4652
	      $$= new Item_func_sp(name);
4653
	    lex->safe_to_cache_query=0;
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	  }
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	| IDENT_sys '(' udf_expr_list ')'
          {
#ifdef HAVE_DLOPEN
            udf_func *udf;

            if (using_udf_functions && (udf=find_udf($1.str, $1.length)))
            {
              switch (udf->returns) {
              case STRING_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_str(udf, *$3);
                  else
                    $$ = new Item_func_udf_str(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_str(udf, *$3);
                  else
                    $$ = new Item_sum_udf_str(udf);
                }
                break;
              case REAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_float(udf, *$3);
                  else
                    $$ = new Item_func_udf_float(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_float(udf, *$3);
                  else
                    $$ = new Item_sum_udf_float(udf);
                }
                break;
              case INT_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_int(udf, *$3);
                  else
                    $$ = new Item_func_udf_int(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_int(udf, *$3);
                  else
                    $$ = new Item_sum_udf_int(udf);
                }
                break;
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              case DECIMAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
                  if ($3 != NULL)
                    $$ = new Item_func_udf_decimal(udf, *$3);
                  else
                    $$ = new Item_func_udf_decimal(udf);
                }
                else
                {
                  if ($3 != NULL)
                    $$ = new Item_sum_udf_decimal(udf, *$3);
                  else
                    $$ = new Item_sum_udf_decimal(udf);
                }
                break;
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              default:
                YYABORT;
              }
            }
            else
#endif /* HAVE_DLOPEN */
            {
4734
	      LEX *lex= Lex;
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              sp_name *name= sp_name_current_db_new(YYTHD, $1);

4737
              sp_add_to_hash(&lex->spfuns, name);
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              if ($3)
                $$= new Item_func_sp(name, *$3);
              else
                $$= new Item_func_sp(name);
4742
	      lex->safe_to_cache_query=0;
4743 4744
	    }
          }
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	| UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' expr_list ')'
4746
	  {
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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();
4752
	    Lex->safe_to_cache_query=0;
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	  }
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	| UNIX_TIMESTAMP '(' expr ')'
	  { $$= new Item_func_unix_timestamp($3); }
	| USER '(' ')'
4757
	  { $$= new Item_func_user(); 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
	  { $$= new Item_func_now_utc(); Lex->safe_to_cache_query=0;}
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	| WEEK_SYM '(' expr ')'
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	  {
4766
            $$= new Item_func_week($3,new Item_int((char*) "0",
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				   YYTHD->variables.default_week_format,1));
4768
          }
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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 ')'
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	  {
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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)
	    $2->set_name($4.str,$4.length,system_charset_info);
	  else
	    $2->set_name($1,(uint) ($3 - $1), YYTHD->charset());
	  $$= $2;
	}
	;
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sum_expr:
	AVG_SYM '(' in_sum_expr ')'
	  { $$=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->in_sum_expr--;
	    $$=new Item_func_group_concat($3,$5,Select->gorder_list,$7);
	    $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));
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	    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            { $$=$1; }
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          {
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	    LEX *lex= Lex;
            if (!($$= 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		{ TEST_ASSERT($$=$1); }
	;
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/* Warning - may return NULL in case of incomplete SELECT */
derived_table_list:
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        table_ref { $$=$1; }
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        | derived_table_list ',' table_ref
          {
            TEST_ASSERT($1 && ($$=$3));
          }
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        ;

join_table:
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        table_ref normal_join table_ref { TEST_ASSERT($1 && ($$=$3)); }
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	| table_ref STRAIGHT_JOIN table_factor
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	  {  TEST_ASSERT($1 && ($$=$3)); $3->straight=1; }
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	| table_ref normal_join table_ref ON expr
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	  { TEST_ASSERT($1 && ($$=$3)); add_join_on($3,$5); }
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	| table_ref normal_join table_ref
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	  USING
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	  {
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	    SELECT_LEX *sel= Select;
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            TEST_ASSERT($1 && $3);
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            sel->save_names_for_using_list($1, $3);
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	  }
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	  '(' using_list ')'
	  { add_join_on($3,$7); $$=$3; }

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	| table_ref LEFT opt_outer JOIN_SYM table_ref ON expr
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	  { TEST_ASSERT($1 && $5); add_join_on($5,$7); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
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	| table_ref LEFT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            TEST_ASSERT($1 && $5);
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            sel->save_names_for_using_list($1, $5);
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	  }
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	  USING '(' using_list ')'
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	  { add_join_on($5,$9); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
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	| table_ref NATURAL LEFT opt_outer JOIN_SYM table_factor
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	  {
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            TEST_ASSERT($1 && $6);
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	    add_join_natural($1,$6);
	    $6->outer_join|=JOIN_TYPE_LEFT;
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	    $$=$6;
	  }
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	| table_ref RIGHT opt_outer JOIN_SYM table_ref ON expr
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          {
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	    LEX *lex= Lex;
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            TEST_ASSERT($1 && $5);
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            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
            add_join_on($$, $7);
          }
	| table_ref RIGHT opt_outer JOIN_SYM table_factor
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	  {
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	    SELECT_LEX *sel= Select;
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            TEST_ASSERT($1 && $5);
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            sel->save_names_for_using_list($1, $5);
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	  }
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	  USING '(' using_list ')'
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          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
            add_join_on($$, $9);
          }
	| table_ref NATURAL RIGHT opt_outer JOIN_SYM table_factor
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	  {
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            TEST_ASSERT($1 && $6);
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	    add_join_natural($6,$1);
	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
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	  }
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	| table_ref NATURAL JOIN_SYM table_factor
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	  { TEST_ASSERT($1 && ($$=$4)); add_join_natural($1,$4); };
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normal_join:
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	JOIN_SYM		{}
	| INNER_SYM JOIN_SYM	{}
	| CROSS JOIN_SYM	{}
	;
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/* Warning - may return NULL in case of incomplete SELECT */
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table_factor:
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	{
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	  SELECT_LEX *sel= Select;
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	  sel->use_index_ptr=sel->ignore_index_ptr=0;
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	  sel->table_join_options= 0;
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	}
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        table_ident opt_table_alias opt_key_definition
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	{
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	  LEX *lex= Lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (!($$= 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())))
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	    YYABORT;
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          sel->add_joined_table($$);
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	}
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	| '{' ident table_ref LEFT OUTER JOIN_SYM table_ref ON expr '}'
	  { TEST_ASSERT($3 && $7); add_join_on($7,$9); $7->outer_join|=JOIN_TYPE_LEFT; $$=$7; }
	| select_derived_init get_select_lex select_derived2
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          {
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            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. */
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          }
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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)
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          {
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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)" */
            $$= 0;
5200
          }
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          else
          if (!$3)
          {
            /* Handle case of derived table, alias may be NULL if there
               are no outer parentheses, add_table_to_list() will throw
               error in this case */
	    LEX *lex=Lex;
            SELECT_LEX *sel= lex->current_select;
	    SELECT_LEX_UNIT *unit= sel->master_unit();
	    lex->current_select= sel= unit->outer_select();
	    if (!($$= 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($$);
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          }
	  else
          if ($4 || $6)
	  {
            /* simple nested joins cannot have aliases or unions */
            yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
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	  }
          else
            $$= $3;
	}
        ;
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/* handle contents of parentheses in join expression */
5232
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;
5258
	  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)
5262 5263
	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
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	    YYABORT;
	  }
5266
	  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);
5270
	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
5271
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
        select_options select_item_list
	{
5275
	  Select->parsing_place= NO_MATTER;
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	}
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	opt_select_from
5278
        ;
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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,
5344
				    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,
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				    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,
5352
				    system_charset_info)); };
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using_list:
	ident
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	  {
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	    SELECT_LEX *sel= Select;
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	    if (!($$= new Item_func_eq(new Item_field(sel->db1, sel->table1,
						      $1.str),
				       new Item_field(sel->db2, sel->table2,
						      $1.str))))
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	      YYABORT;
	  }
	| using_list ',' ident
	  {
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	    SELECT_LEX *sel= Select;
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	    if (!($$= new Item_cond_and(new Item_func_eq(new Item_field(sel->db1,sel->table1,$3.str), new Item_field(sel->db2,sel->table2,$3.str)), $1)))
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	      YYABORT;
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	  };
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interval:
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	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; }
5393
	| QUARTER_SYM		{ $$=INTERVAL_QUARTER; }
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	| SECOND_SYM		{ $$=INTERVAL_SECOND; }
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	| YEAR_SYM		{ $$=INTERVAL_YEAR; }
        ;
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5398
date_time_type:
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          DATE_SYM              {$$=MYSQL_TIMESTAMP_DATE;}
        | TIME_SYM              {$$=MYSQL_TIMESTAMP_TIME;}
        | DATETIME              {$$=MYSQL_TIMESTAMP_DATETIME;}
        | TIMESTAMP             {$$=MYSQL_TIMESTAMP_DATETIME;}
        ;
5404

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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
5427
	  {
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            SELECT_LEX *select= Select;
	    select->where= $3;
            select->parsing_place= NO_MATTER;
	    if ($3)
	      $3->top_level_item();
5433
	  }
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 	;
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having_clause:
	/* empty */
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	| HAVING
	  {
5440
	    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;
5446
	    sel->parsing_place= NO_MATTER;
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	    if ($3)
	      $3->top_level_item();
	  }
5450
	;
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opt_escape:
5453 5454
	ESCAPE_SYM simple_expr { $$= $2; }
	| /* empty */
5455 5456 5457 5458 5459
          {

            $$= ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ?
		 new Item_string("", 0, &my_charset_latin1) :
                 new Item_string("\\", 1, &my_charset_latin1));
5460 5461
          }
        ;
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/*
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   group by statement in select
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*/

group_clause:
	/* empty */
5470
	| 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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olap_opt:
	/* empty */ {}
5480
	| WITH CUBE_SYM
5481
          {
5482
	    LEX *lex=Lex;
5483 5484
	    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");
5491
	    YYABORT;	/* To be deleted in 5.1 */
5492
	  }
5493
	| WITH ROLLUP_SYM
5494
          {
5495 5496 5497
	    LEX *lex= Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH ROLLUP",
5499 5500 5501
		       "global union parameters");
	      YYABORT;
	    }
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	    lex->current_select->olap= ROLLUP_TYPE;
5503
	  }
5504
	;
5505

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/*
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   Order by statement in select
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*/

5510
opt_order_clause:
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	/* empty */
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	| order_clause;
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order_clause:
5515 5516
	ORDER_SYM BY
        {
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	  LEX *lex=Lex;
5518
	  if (lex->current_select->linkage != GLOBAL_OPTIONS_TYPE &&
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	      lex->current_select->olap !=
5520
	      UNSPECIFIED_OLAP_TYPE)
5521
	  {
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	    my_error(ER_WRONG_USAGE, MYF(0),
                     "CUBE/ROLLUP", "ORDER BY");
5524 5525
	    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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5540 5541 5542
opt_limit_clause_init:
	/* empty */
	{
5543 5544
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
5545
          sel->offset_limit= 0L;
5546
          sel->select_limit= HA_POS_ERROR;
5547
	}
5548 5549 5550
	| limit_clause {}
	;

5551 5552 5553 5554 5555
opt_limit_clause:
	/* empty */	{}
	| limit_clause	{}
	;

5556
limit_clause:
5557
	LIMIT limit_options {}
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	;
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limit_options:
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	ulong_num
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	  {
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            SELECT_LEX *sel= Select;
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            sel->select_limit= $1;
            sel->offset_limit= 0L;
5566
	    sel->explicit_limit= 1;
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	  }
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	| ulong_num ',' ulong_num
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $3;
	    sel->offset_limit= $1;
5573
	    sel->explicit_limit= 1;
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	  }
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	| ulong_num OFFSET_SYM ulong_num
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $1;
	    sel->offset_limit= $3;
5580
	    sel->explicit_limit= 1;
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	  }
	;
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delete_limit_clause:
	/* empty */
	{
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	  LEX *lex=Lex;
5589
	  lex->current_select->select_limit= HA_POS_ERROR;
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	}
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	| LIMIT ulonglong_num
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	{
	  SELECT_LEX *sel= Select;
	  sel->select_limit= (ha_rows) $2;
	  sel->explicit_limit= 1;
	};
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ulong_num:
          NUM           { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| HEX_NUM       { int error; $$= (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;
5620 5621
	    if (&lex->select_lex != lex->current_select)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "PROCEDURE", "subquery");
5623 5624
	      YYABORT;
	    }
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	    lex->proc_list.elements=0;
	    lex->proc_list.first=0;
	    lex->proc_list.next= (byte**) &lex->proc_list.first;
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	    if (add_proc_to_list(lex->thd, new Item_field(NULL,NULL,$2.str)))
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	      YYABORT;
5630
	    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)
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	      $2->set_name($1,(uint) ((char*) lex->tok_end - $1), YYTHD->charset());
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	  }
          ;


select_var_list_init:
	   {
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             LEX *lex=Lex;
	     if (!lex->describe && (!(lex->result= new select_dumpvar())))
5659 5660
	        YYABORT;
	   }
5661
	   select_var_list
5662
	   {}
5663
           ;
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select_var_list:
5666 5667 5668 5669
	   select_var_list ',' select_var_ident
	   | select_var_ident {}
           ;

5670 5671 5672 5673 5674 5675 5676 5677 5678 5679
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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           {
5681
             LEX *lex=Lex;
5682 5683 5684 5685
	     sp_pvar_t *t;

	     if (!lex->spcont || !(t=lex->spcont->find_pvar(&$1)))
	     {
5686
	       my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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5687
	       YYABORT;
5688 5689 5690 5691 5692 5693 5694 5695
	     }
	     if (! lex->result)
	       YYABORT;
	     else
	     {
	       ((select_dumpvar *)lex->result)->var_list.push_back( new my_var($1,1,t->offset,t->type));
	       t->isset= TRUE;
	     }
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	   }
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           ;
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5699
into:
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        INTO OUTFILE TEXT_STRING_sys
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	{
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          LEX *lex= Lex;
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          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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5709
	| INTO DUMPFILE TEXT_STRING_sys
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5710
	{
5711
	  LEX *lex=Lex;
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	  if (!lex->describe)
	  {
5714
	    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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	}
5721
        | INTO select_var_list_init
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	{
5723
	  Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
5724 5725
	}
        ;
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/*
  DO statement
*/
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5731
do:	DO_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DO;
5735 5736 5737 5738 5739
	  mysql_init_select(lex);
	}
	expr_list
	{
	  Lex->insert_list= $3;
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	}
5741 5742
	;

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/*
5744
  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;
5752 5753
	  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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5756
	  {
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	     LEX *lex=Lex;
	     lex->sql_command= SQLCOM_DROP_INDEX;
5759 5760 5761
	     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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5772
	 }
5773
	| DROP FUNCTION_SYM if_exists sp_name
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5774
	  {
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	    LEX *lex=Lex;
5776 5777
	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
5779 5780
	      YYABORT;
	    }
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	    lex->sql_command = SQLCOM_DROP_FUNCTION;
5782 5783 5784 5785 5786 5787 5788 5789
	    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");
5791 5792 5793 5794 5795
	      YYABORT;
	    }
	    lex->sql_command = SQLCOM_DROP_PROCEDURE;
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
5796
	  }
5797
	| DROP USER clear_privileges user_list
5798
	  {
5799 5800
	    Lex->sql_command = SQLCOM_DROP_USER;
          }
5801 5802 5803 5804 5805 5806 5807 5808 5809 5810
	| DROP VIEW_SYM if_exists table_list opt_restrict
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    lex->sql_command= SQLCOM_DROP_VIEW;
	    lex->drop_if_exists= $3;
	  }
        | DROP TRIGGER_SYM ident '.' ident
          {
            LEX *lex= Lex;
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5812 5813 5814 5815 5816 5817 5818 5819
            lex->sql_command= SQLCOM_DROP_TRIGGER;
            /* QQ: Could we loosen lock type in certain cases ? */
            if (!lex->select_lex.add_table_to_list(YYTHD,
                                                   new Table_ident($3),
                                                   (LEX_STRING*) 0,
                                                   TL_OPTION_UPDATING,
                                                   TL_WRITE))
              YYABORT;
5820
            lex->ident= $5;
5821 5822
          }
	;
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table_list:
5825
	table_name
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	| table_list ',' table_name;
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5828
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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5835 5836

if_exists:
5837
	/* empty */ { $$= 0; }
5838 5839
	| IF EXISTS { $$= 1; }
	;
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5841 5842 5843 5844
opt_temporary:
	/* empty */ { $$= 0; }
	| TEMPORARY { $$= 1; }
	;
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/*
** Insert : add new data to table
*/

insert:
5850 5851 5852
	INSERT
	{
	  LEX *lex= Lex;
5853 5854
	  lex->sql_command= SQLCOM_INSERT;
	  lex->duplicates= DUP_ERROR; 
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5855
	  mysql_init_select(lex);
5856 5857
	  /* for subselects */
          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
5858
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
5859
	} insert_lock_option
5860
	opt_ignore insert2
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5861
	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
5865
	insert_field_spec opt_insert_update
5866
	{}
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	;
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replace:
5870 5871
	REPLACE
	{
5872
	  LEX *lex=Lex;
5873 5874
	  lex->sql_command = SQLCOM_REPLACE;
	  lex->duplicates= DUP_REPLACE;
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	  mysql_init_select(lex);
5876
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
5877
	}
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	replace_lock_option insert2
	{
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5880
	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
	insert_field_spec
5884
	{}
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5885
	;
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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; }
5892
	;
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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:
5903
	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 {}
5933
        ;
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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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5942
	ident_eq_value;
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ident_eq_value:
5945
	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:
5993
	expr	  { $$= $1;}
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SCRUM  
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5994
	| DEFAULT {$$= new Item_default_value(); }
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5995
	;
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5997 5998
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
6001 6002
        ;

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/* Update rows in a table */

update:
6006 6007
	UPDATE_SYM
	{
6008
	  LEX *lex= Lex;
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6009
	  mysql_init_select(lex);
6010
          lex->sql_command= SQLCOM_UPDATE;
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6011
	  lex->lock_option= TL_UNLOCK; 	/* Will be set later */
6012
	  lex->duplicates= DUP_ERROR; 
6013
        }
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6014
        opt_low_priority opt_ignore join_table_list
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6015
	SET update_list
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6016
	{
6017 6018
	  LEX *lex= Lex;
          if (lex->select_lex.table_list.elements > 1)
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            lex->sql_command= SQLCOM_UPDATE_MULTI;
6020 6021 6022
	  else if (lex->select_lex.get_table_list()->derived)
	  {
	    /* it is single table update and it is update of derived table */
6023 6024
	    my_error(ER_NON_UPDATABLE_TABLE, MYF(0),
                     lex->select_lex.get_table_list()->alias, "UPDATE");
6025 6026
	    YYABORT;
	  }
6027 6028 6029 6030 6031 6032
          /*
            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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6033
	}
6034
	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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6042
	simple_ident_nospvar equal expr_or_default
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unknown committed
6043
	{
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6044
	  if (add_item_to_list(YYTHD, $1) || add_value_to_list(YYTHD, $3))
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6045
	    YYABORT;
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	};

insert_update_list:
	insert_update_list ',' insert_update_elem
	| insert_update_elem;

insert_update_elem:
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6053
	simple_ident_nospvar equal expr_or_default
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6054
	  {
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	  LEX *lex= Lex;
	  if (lex->update_list.push_back($1) || 
	      lex->value_list.push_back($3))
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6058
	      YYABORT;
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6059
	  };
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opt_low_priority:
6062
	/* empty */	{ $$= YYTHD->update_lock_default; }
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unknown committed
6063
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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/* Delete rows from a table */

delete:
6068
	DELETE_SYM
6069
	{
6070 6071
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_DELETE;
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6072
	  mysql_init_select(lex);
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6073
	  lex->lock_option= lex->thd->update_lock_default;
6074
	  lex->ignore= 0;
6075
	  lex->select_lex.init_order();
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6076
	}
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6077 6078
	opt_delete_options single_multi {}
	;
6079 6080

single_multi:
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 	FROM table_ident
	{
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6083 6084
	  if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
					 Lex->lock_option))
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6085 6086 6087
	    YYABORT;
	}
	where_clause opt_order_clause
6088
	delete_limit_clause {}
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6089
	| table_wild_list
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6090
	  { mysql_init_multi_delete(Lex); }
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6091
          FROM join_table_list where_clause
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	| FROM table_wild_list
	  { mysql_init_multi_delete(Lex); }
6094 6095 6096
	  USING join_table_list where_clause
	  {}
	;
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table_wild_list:
	  table_wild_one {}
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6100
	  | table_wild_list ',' table_wild_one {};
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table_wild_one:
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6103
	ident opt_wild opt_table_alias
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6104
	{
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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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6107 6108
	    YYABORT;
        }
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	| ident '.' ident opt_wild opt_table_alias
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unknown committed
6110
	  {
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unknown committed
6111 6112
	    if (!Select->add_table_to_list(YYTHD,
					   new Table_ident(YYTHD, $1, $3, 0),
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6113 6114
					   $5, TL_OPTION_UPDATING,
					   Lex->lock_option))
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6115
	      YYABORT;
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6116
	  }
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6117
	;
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opt_wild:
6120
	/* empty */	{}
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6121
	| '.' '*'	{};
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6124
opt_delete_options:
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6125
	/* empty */	{}
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6126
	| opt_delete_option opt_delete_options {};
6127 6128

opt_delete_option:
6129
	QUICK		{ Select->options|= OPTION_QUICK; }
6130
	| LOW_PRIORITY	{ Lex->lock_option= TL_WRITE_LOW_PRIORITY; }
6131
	| IGNORE_SYM	{ Lex->ignore= 1; };
6132

6133
truncate:
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6134
	TRUNCATE_SYM opt_table_sym table_name
6135
	{
6136
	  LEX* lex= Lex;
6137
	  lex->sql_command= SQLCOM_TRUNCATE;
6138
	  lex->select_lex.options= 0;
6139
	  lex->select_lex.init_order();
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6140 6141
	}
	;
6142

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unknown committed
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opt_table_sym:
	/* empty */
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6145
	| TABLE_SYM;
6146

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/* Show things */

6149 6150
show:	SHOW
	{
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6151 6152
	  LEX *lex=Lex;
	  lex->wild=0;
6153 6154 6155
          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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6158
	show_param
6159 6160
	{}
	;
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show_param:
6163
         DATABASES wild_and_where
6164 6165 6166 6167 6168 6169 6170
         {
           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;
         }
6171
         | opt_full TABLES opt_db wild_and_where
6172 6173 6174 6175
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLES;
6176
             lex->select_lex.db= $3;
6177 6178 6179
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_NAMES))
               YYABORT;
           }
6180
         | TABLE_SYM STATUS_SYM opt_db wild_and_where
6181 6182 6183 6184
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLE_STATUS;
6185
             lex->select_lex.db= $3;
6186 6187 6188
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLES))
               YYABORT;
           }
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        | OPEN_SYM TABLES opt_db wild_and_where
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	  {
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	    LEX *lex= Lex;
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            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_OPEN_TABLES;
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	    lex->select_lex.db= $3;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_OPEN_TABLES))
              YYABORT;
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	  }
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	| ENGINE_SYM storage_engines 
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	  { Lex->create_info.db_type= $2; }
	  show_engine_param
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	| opt_full COLUMNS from_or_in table_ident opt_db 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_FIELDS;
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	    if ($5)
	      $4->change_db($5);
	    if (prepare_schema_table(YYTHD, lex, $4, SCH_COLUMNS))
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	      YYABORT;
	  }
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        | 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;
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	    Lex->mi.server_id = $16;
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          }
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        | master_or_binary LOGS_SYM
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          {
	    Lex->sql_command = SQLCOM_SHOW_BINLOGS;
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          }
        | 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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          {
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	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_BINLOG_EVENTS;
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          } opt_limit_clause_init
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        | keys_or_index from_or_in table_ident opt_db where_clause
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_KEYS;
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	    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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	  }
	| 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;
            lex->option_type= (enum_var_type) $1;
            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->sql_command = SQLCOM_SHOW_INNODB_STATUS; WARN_DEPRECATED("SHOW INNODB STATUS", "SHOW ENGINE INNODB STATUS"); }
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        | MUTEX_SYM STATUS_SYM
          { Lex->sql_command = SQLCOM_SHOW_MUTEX_STATUS; }
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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;
            lex->option_type= (enum_var_type) $1;
            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->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW BDB LOGS", "SHOW ENGINE BDB LOGS"); }
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	| LOGS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_LOGS; 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;
	    LEX_USER *curr_user;
            if (!(curr_user= (LEX_USER*) thd->alloc(sizeof(st_lex_user))))
              YYABORT;
            curr_user->user.str= thd->priv_user;
            curr_user->user.length= strlen(thd->priv_user);
            if (*thd->priv_host != 0)
            {
              curr_user->host.str= thd->priv_host;
              curr_user->host.length= strlen(thd->priv_host);
            }
            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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	  };
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show_engine_param:
	STATUS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_INNODB:
	      Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS;
	      break;
	    default:
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	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "STATUS");
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	      YYABORT;
	    }
	  }
	| LOGS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_BERKELEY_DB:
	      Lex->sql_command = SQLCOM_SHOW_LOGS;
	      break;
	    default:
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	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "LOGS");
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	      YYABORT;
	    }
	  };

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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_FUNCTION)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "FLUSH");
	    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
        {}
6687
        |
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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:
6698
	/* 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; }
6706
	| 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:
6717 6718
	TERMINATED BY text_string 
          {
6719
            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;
6725
            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
6730
          {
6731
            DBUG_ASSERT(Lex->exchange != 0);
6732 6733
            Lex->exchange->enclosed= $3;
          }
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        | ESCAPED BY text_string
6735
          {
6736
            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
6750
          {
6751
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_term= $3;
          }
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        | STARTING BY text_string
6755
          {
6756
            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
          {
6764
            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:
6794
	TEXT_STRING_literal
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	{
	  THD *thd= YYTHD;
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	  $$ = new Item_string($1.str,$1.length,thd->variables.collation_connection);
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	}
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	| NCHAR_STRING
6800
	{ $$=  new Item_string($1.str,$1.length,national_charset_info); }
6801
	| UNDERSCORE_CHARSET TEXT_STRING
6802
	  { $$ = new Item_string($2.str,$2.length,Lex->charset); }
6803
	| text_literal TEXT_STRING_literal
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	  { ((Item_string*) $1)->append($2.str,$2.length); }
	;
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text_string:
6808
	TEXT_STRING_literal
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	{ $$=  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);
6813
	    /*
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	      it is OK only emulate fix_fields, because we need only
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              value of constant
	    */
	    $$= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
6819
	      (String*) 0;
6820
	  }
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        | BIN_NUM
          {
	    Item *tmp= new Item_bin_string($1.str, $1.length);
	    /*
	      it is OK only emulate fix_fields, because we need only
              value of constant
	    */
	    $$= tmp ? tmp->quick_fix_field(), tmp->val_str((String*) 0) :
		      (String*) 0;
          }
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	;

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param_marker:
6834
        '?'
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        {
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          THD *thd=YYTHD;
	  LEX *lex= thd->lex;
          if (thd->command == COM_PREPARE)
6839
          {
6840 6841 6842 6843
            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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	      my_message(ER_OUT_OF_RESOURCES, ER(ER_OUT_OF_RESOURCES), MYF(0));
6845 6846
	      YYABORT;
            }
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          }
6848
          else
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          {
6850
            yyerror(ER(ER_SYNTAX_ERROR));
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            YYABORT;
          }
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        }
	;

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signed_literal:
	literal		{ $$ = $1; }
	| '+' NUM_literal { $$ = $2; }
6859 6860
	| '-' NUM_literal
	  {
6861
	    $2->max_length++;
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	    $$= $2->neg();
6863
	  }
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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	{ $$ =	new Item_null();
6871
			  Lex->next_state=MY_LEX_OPERATOR_OR_IDENT;}
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	| FALSE_SYM	{ $$= 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	{ $$= new Item_bin_string($1.str, $1.length); }
6876
	| UNDERSCORE_CHARSET HEX_NUM
6877
	  {
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	    Item *tmp= new Item_hex_string($2.str, $2.length);
6879
	    /*
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	      it is OK only emulate fix_fieds, because we need only
6881 6882 6883
              value of constant
	    */
	    String *str= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
6885
	      (String*) 0;
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	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
6889
	  }
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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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6908
NUM_literal:
6909 6910
	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); }
6911
	| ULONGLONG_NUM	{ $$ =	new Item_uint($1.str, $1.length); }
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        | DECIMAL_NUM
6913
	{
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           $$= 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;
	   }
	}
6928
	;
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/**********************************************************************
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** Creating different items.
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**********************************************************************/

insert_ident:
6935
	simple_ident_nospvar { $$=$1; }
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	| table_wild	 { $$=$1; };
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table_wild:
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	ident '.' '*'
6940 6941
	{
	  $$ = new Item_field(NullS,$1.str,"*");
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	  Lex->current_select->with_wild++;
6943
	}
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	| ident '.' ident '.' '*'
6945 6946
	{
	  $$ = new Item_field((YYTHD->client_capabilities &
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                             CLIENT_NO_SCHEMA ? NullS : $1.str),
                             $3.str,"*");
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	  Lex->current_select->with_wild++;
6950 6951
	}
	;
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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)))
	  { /* We're compiling a stored procedure and found a variable */
	    $$ = (Item*) new Item_splocal($1, spv->offset);
            lex->variables_used= 1;
	    lex->safe_to_cache_query=0;
	  }
	  else
	  {
	    SELECT_LEX *sel=Select;
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
                 (Item*) new Item_field(NullS,NullS,$1.str) :
	         (Item*) new Item_ref(NullS,NullS,$1.str);
	  }
        }
        | simple_ident_q { $$= $1; }
	;

simple_ident_nospvar:
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	ident
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	{
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	  SELECT_LEX *sel=Select;
6985
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
              (Item*) new Item_field(NullS,NullS,$1.str) :
6988
	      (Item*) new Item_ref(NullS,NullS,$1.str);
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	}
6990
	| simple_ident_q { $$= $1; }
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	;
6992 6993 6994

simple_ident_q:
	ident '.' ident
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	{
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	  THD *thd= YYTHD;
6997
	  LEX *lex= thd->lex;
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6999 7000 7001 7002 7003 7004
          /*
            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") ||
7006 7007
               !my_strcasecmp(system_charset_info, $1.str, "OLD")))
          {
7008
            Item_trigger_field *trg_fld;
7009
            bool new_row= ($1.str[0]=='N' || $1.str[0]=='n');
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7011 7012 7013
            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");
7015 7016
              YYABORT;
            }
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7018 7019 7020
            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");
7022 7023
              YYABORT;
            }
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7025 7026 7027 7028
            if (!(trg_fld= new Item_trigger_field(new_row ?
                                                  Item_trigger_field::NEW_ROW:
                                                  Item_trigger_field::OLD_ROW,
                                                  $3.str)))
7029
              YYABORT;
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7031 7032 7033 7034 7035 7036
            /*
              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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7038 7039 7040 7041 7042 7043 7044
            $$= (Item *)trg_fld;
          }
          else
          {
	    SELECT_LEX *sel= lex->current_select;
	    if (sel->no_table_names_allowed)
	    {
7045 7046
	      my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                       MYF(0), $1.str, thd->where);
7047 7048 7049 7050 7051 7052 7053
	    }
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
	        (Item*) new Item_field(NullS,$1.str,$3.str) :
	        (Item*) new Item_ref(NullS,$1.str,$3.str);
          }
        }
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	| '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
7057
	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
7061 7062
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $2.str, thd->where);
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	  }
7064
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field(NullS,$2.str,$4.str) :
7067
              (Item*) new Item_ref(NullS, $2.str, $4.str);
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	}
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	| ident '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
7072
	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
7076 7077
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $3.str, thd->where);
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	  }
7079
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field((YYTHD->client_capabilities &
				      CLIENT_NO_SCHEMA ? NullS : $1.str),
				     $3.str, $5.str) :
7084 7085
	      (Item*) new Item_ref((YYTHD->client_capabilities &
				    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			{ $$=$1;}
7092 7093 7094 7095 7096
	| ident '.' ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->db))
            {
7097
              my_error(ER_WRONG_DB_NAME, MYF(0), $1.str);
7098 7099
              YYABORT;
            }
7100 7101
            if (my_strcasecmp(table_alias_charset, $3.str,
                              table->table_name))
7102
            {
7103
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3.str);
7104 7105 7106 7107 7108 7109 7110 7111 7112
              YYABORT;
            }
            $$=$5;
          }
	| ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->alias))
            {
7113
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $1.str);
7114 7115 7116 7117
              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);}
7123 7124 7125
	| '.' 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}; $$=new Table_ident(YYTHD, db,$1,0); }
7128
        ;
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IDENT_sys:
7131 7132 7133 7134 7135
	IDENT { $$= $1; }
	| IDENT_QUOTED
	  {
	    THD *thd= YYTHD;
	    if (thd->charset_is_system_charset)
7136 7137
            {
              CHARSET_INFO *cs= system_charset_info;
7138
              int dummy_error;
7139 7140
              uint wlen= cs->cset->well_formed_len(cs, $1.str,
                                                   $1.str+$1.length,
7141
                                                   $1.length, &dummy_error);
7142 7143
              if (wlen < $1.length)
              {
7144 7145
                my_error(ER_INVALID_CHARACTER_STRING, MYF(0),
                         cs->csname, $1.str + wlen);
7146 7147
                YYABORT;
              }
7148
	      $$= $1;
7149
            }
7150 7151 7152 7153
	    else
	      thd->convert_string(&$$, 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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	}
	;

7168
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);
	  $$.length= $1.length;
7188 7189
	}
	;
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ident_or_text:
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        ident                   { $$=$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 (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
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	    YYABORT;
7202 7203 7204 7205
	  $$->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; $$->host=$3;
7212
	  }
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	| CURRENT_USER optional_braces
7214 7215 7216 7217 7218 7219 7220 7221 7222 7223 7224 7225 7226 7227 7228 7229 7230
	{
          THD *thd= YYTHD;
          if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
            YYABORT;
          $$->user.str= thd->priv_user;
          $$->user.length= strlen(thd->priv_user);
          if (*thd->priv_host != 0)
          {
            $$->host.str= thd->priv_host;
            $$->host.length= strlen(thd->priv_host);
          }
          else
          {
            $$->host.str= (char *) "%";
            $$->host.length= 1;
          }
	};
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/* Keyword that we allow for identifiers */

keyword:
	ACTION			{}
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	| ADDDATE_SYM		{}
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	| AFTER_SYM		{}
7238
	| AGAINST		{}
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	| AGGREGATE_SYM		{}
7240
	| ALGORITHM_SYM		{}
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	| ANY_SYM		{}
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	| ASCII_SYM		{}
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	| AUTO_INC		{}
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	| AVG_ROW_LENGTH	{}
	| AVG_SYM		{}
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	| BACKUP_SYM		{}
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	| BEGIN_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		{}
7253
	| BYTE_SYM		{}
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	| BTREE_SYM		{}
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	| CACHE_SYM		{}
7256
	| CASCADED              {}
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	| CHAIN_SYM		{}
7258
	| CHANGED		{}
7259
	| CHARSET		{}
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	| CHECKSUM_SYM		{}
7261
	| CIPHER_SYM		{}
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	| CLIENT_SYM		{}
7263
	| CLOSE_SYM		{}
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	| COLLATION_SYM		{}
7265
        | COLUMNS               {}
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	| COMMENT_SYM		{}
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	| COMMITTED_SYM		{}
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	| COMMIT_SYM		{}
7269
	| COMPACT_SYM		{}
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	| COMPRESSED_SYM	{}
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	| CONCURRENT		{}
7272
	| CONSISTENT_SYM	{}
7273
	| CONTAINS_SYM          {}
7274
	| CUBE_SYM		{}
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	| DATA_SYM		{}
	| DATETIME		{}
	| DATE_SYM		{}
	| DAY_SYM		{}
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        | DEALLOCATE_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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	| DO_SYM		{}
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	| DUMPFILE		{}
	| DUPLICATE_SYM		{}
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	| DYNAMIC_SYM		{}
	| END			{}
	| ENUM			{}
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	| ENGINE_SYM		{}
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	| ENGINES_SYM		{}
7293
	| ERRORS		{}
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	| ESCAPE_SYM		{}
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	| EVENTS_SYM		{}
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	| EXECUTE_SYM		{}
7297
        | EXPANSION_SYM         {}
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	| EXTENDED_SYM		{}
7299
	| FAST_SYM		{}
7300
	| 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		{}
	| FLUSH_SYM		{}
7308
	| FRAC_SECOND_SYM	{}
7309
	| GEOMETRY_SYM		{}
7310
	| GEOMETRYCOLLECTION	{}
7311
	| GET_FORMAT		{}
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	| GRANTS		{}
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	| GLOBAL_SYM		{}
7314
	| HANDLER_SYM		{}
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	| HASH_SYM		{}
7316
	| HELP_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		{}
7326
	| INSERT_METHOD		{}
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	| RELAY_THREAD		{}
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	| LABEL_SYM             {}
	| LANGUAGE_SYM          {}
7330
	| LAST_SYM		{}
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	| LEAVES                {}
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	| LEVEL_SYM		{}
7333
	| LINESTRING		{}
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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	{}
7356
	| MAX_USER_CONNECTIONS_SYM {}
7357
	| MEDIUM_SYM		{}
7358
	| MERGE_SYM		{}
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	| MICROSECOND_SYM	{}
7360
        | 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		{}
7369
        | MUTEX_SYM             {}
7370
	| NAME_SYM              {}
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	| NAMES_SYM		{}
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	| NATIONAL_SYM		{}
	| NCHAR_SYM		{}
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	| NDBCLUSTER_SYM	{}
7375
	| NEXT_SYM		{}
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	| NEW_SYM		{}
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	| NO_SYM		{}
7378
	| NONE_SYM		{}
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	| NVARCHAR_SYM		{}
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	| OFFSET_SYM		{}
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	| OLD_PASSWORD		{}
7382
	| ONE_SHOT_SYM		{}
7383
        | ONE_SYM               {}
7384
	| OPEN_SYM		{}
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	| PACK_KEYS_SYM		{}
7386
	| PARTIAL		{}
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	| PASSWORD		{}
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        | PHASE_SYM             {}
7389
	| POINT_SYM		{}
7390
	| POLYGON		{}
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        | PREPARE_SYM           {}
7392
	| PREV_SYM		{}
7393
        | PRIVILEGES            {}
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	| PROCESS		{}
	| PROCESSLIST_SYM	{}
7396
	| QUARTER_SYM		{}
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	| QUERY_SYM		{}
7398
	| 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		{}
	| REPAIR		{}
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	| REPEATABLE_SYM	{}
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	| REPLICATION		{}
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	| RESET_SYM		{}
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	| RESOURCES		{}
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	| RESTORE_SYM		{}
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        | RESUME_SYM            {}
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	| RETURNS_SYM           {}
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	| ROLLBACK_SYM		{}
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	| ROLLUP_SYM		{}
7419
	| ROUTINE_SYM		{}
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	| ROWS_SYM		{}
	| ROW_FORMAT_SYM	{}
	| ROW_SYM		{}
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	| RTREE_SYM		{}
7424
	| SAVEPOINT_SYM		{}
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	| SECOND_SYM		{}
7426
	| SECURITY_SYM		{}
7427
	| SERIAL_SYM		{}
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	| SERIALIZABLE_SYM	{}
	| SESSION_SYM		{}
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	| SIGNED_SYM		{}
7431
	| SIMPLE_SYM		{}
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	| SHARE_SYM		{}
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	| SHUTDOWN		{}
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	| SLAVE			{}
7435
	| 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		{}
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	| START_SYM		{}
	| STATUS_SYM		{}
	| STOP_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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	| SUPER_SYM		{}
7449
        | SUSPEND_SYM           {}
7450
        | TABLES                {}
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	| TABLESPACE		{}
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	| TEMPORARY		{}
7453
	| TEMPTABLE_SYM		{}
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	| TEXT_SYM		{}
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	| TRANSACTION_SYM	{}
7456
	| TRUNCATE_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		{}
7462
        | TYPE_SYM              {}
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        | UDF_RETURNS_SYM       {}
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	| FUNCTION_SYM		{}
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	| UNCOMMITTED_SYM	{}
7466
	| UNDEFINED_SYM		{}
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	| UNICODE_SYM		{}
7468
	| UNKNOWN_SYM		{}
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	| UNTIL_SYM		{}
7470
	| USER			{}
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	| USE_FRM		{}
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	| VARIABLES		{}
7473
	| VIEW_SYM		{}
7474
	| VALUE_SYM		{}
7475
	| WARNINGS		{}
7476
	| WEEK_SYM		{}
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	| WORK_SYM		{}
7478
	| X509_SYM		{}
7479
        | XA_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);
7491
	  lex->option_type=OPT_SESSION;
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	  lex->var_list.empty();
7493
          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;
          }
        }
7534
	ext_option_value
7535 7536
        {
          LEX *lex= Lex;
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7538 7539 7540
          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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7552 7553 7554
              if (!(i= new sp_instr_stmt(sp->instructions(), lex->spcont,
                                         lex)))
                YYABORT;
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7556 7557 7558 7559
              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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7561 7562
              if (!(qbuff.str= alloc_root(YYTHD->mem_root, qbuff.length + 5)))
                YYABORT;
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7564 7565 7566 7567 7568 7569 7570 7571 7572
              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;
7603

7604 7605 7606 7607
sys_option_value:
        option_type internal_variable_name equal set_expr_or_default
        {
          LEX *lex=Lex;
7608

7609 7610 7611 7612
          if ($2.var == &trg_new_row_fake_var)
          {
            /* We are in trigger and assigning value to field of new row */
            Item *it;
7613
            Item_trigger_field *trg_fld;
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            sp_instr_set_trigger_field *i;
            if ($1)
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
7619
            }
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            if (lex->query_tables)
            {
              my_message(ER_SP_SUBSELECT_NYI, ER(ER_SP_SUBSELECT_NYI),
              MYF(0));
              YYABORT;
            }
            if ($4)
              it= $4;
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            else
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            {
              /* QQ: Shouldn't this be field's default value ? */
              it= new Item_null();
            }
7633

7634 7635 7636 7637 7638
            if (!(trg_fld= new Item_trigger_field(Item_trigger_field::NEW_ROW,
                                                  $2.base_name.str)) ||
                !(i= new sp_instr_set_trigger_field(
                           lex->sphead->instructions(), lex->spcont,
                           trg_fld, it)))
7639
              YYABORT;
7640

7641 7642 7643 7644
            /*
              Let us add this item to list of all Item_trigger_field
              objects in trigger.
            */
7645 7646
            lex->trg_table_fields.link_in_list((byte *)trg_fld,
                                    (byte **)&trg_fld->next_trg_field);
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            lex->sphead->add_instr(i);
          }
          else if ($2.var)
          { /* System variable */
            if ($1)
              lex->option_type= (enum_var_type)$1;
            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;
            sp_instr_set *i;
            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();
            i= new sp_instr_set(lex->sphead->instructions(), ctx,
                                spv->offset, it, spv->type, lex, TRUE);
            lex->sphead->add_instr(i);
            spv->isset= TRUE;
          }
        }
        | option_type TRANSACTION_SYM ISOLATION LEVEL_SYM isolation_types
	{
	  LEX *lex=Lex;
          if (!$1)
            lex->option_type= (enum_var_type)$1;
	  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;
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	    lex->var_list.push_back(new set_var((enum_var_type) $3, $4.var,
						&$4.base_name, $6));
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	  }
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	| 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;
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	  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 charset_name_or_default opt_collate
7715
	{
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	  LEX *lex= Lex;
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	  $2= $2 ? $2 : global_system_variables.character_set_client;
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	  $3= $3 ? $3 : $2;
	  if (!my_charset_same($2,$3))
7720
	  {
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	    my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                     $3->name, $2->csname);
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	    YYABORT;
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	  }
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	  lex->var_list.push_back(new set_var_collation_client($3,$3,$3));
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	}
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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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	    if (!(user=(LEX_USER*) thd->alloc(sizeof(LEX_USER))))
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	      YYABORT;
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	    user->host=null_lex_str;
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	    user->user.str=thd->priv_user;
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	    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));
	  }
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	;
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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
	  {
            /* An SP local variable */
	    $$.var= NULL;
	    $$.base_name= $1;
	  }
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	}
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	| ident '.' ident
	  {
7776
            LEX *lex= Lex;
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            if (check_reserved_words(&$1))
            {
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	      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 */
              $$.var= &trg_new_row_fake_var;
              $$.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())
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	      my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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	    $$.var= tmp;
	    $$.base_name.str=    (char*) "default";
	    $$.base_name.length= 7;
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	  }
7828
        ;
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isolation_types:
	READ_SYM UNCOMMITTED_SYM	{ $$= ISO_READ_UNCOMMITTED; }
	| READ_SYM COMMITTED_SYM	{ $$= ISO_READ_COMMITTED; }
	| REPEATABLE_SYM READ_SYM	{ $$= ISO_REPEATABLE_READ; }
	| SERIALIZABLE_SYM		{ $$= ISO_SERIALIZABLE; }
	;
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text_or_password:
	TEXT_STRING { $$=$1.str;}
	| PASSWORD '(' TEXT_STRING ')'
	  {
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	    $$= $3.length ? YYTHD->variables.old_passwords ?
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	        Item_func_old_password::alloc(YYTHD, $3.str) :
	        Item_func_password::alloc(YYTHD, $3.str) :
	      $3.str;
	  }
	| OLD_PASSWORD '(' TEXT_STRING ')'
	  {
	    $$= $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)
	  {
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	    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
	{}
7879
	;
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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
7891
	{
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	  if (!Select->add_table_to_list(YYTHD, $1, $2, 0, (thr_lock_type) $3))
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	   YYABORT;
	}
7895
        ;
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lock_option:
	READ_SYM	{ $$=TL_READ_NO_INSERT; }
7899
	| WRITE_SYM     { $$=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)
	  {
7911
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "UNLOCK");
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	    YYABORT;
	  }
	  lex->sql_command= SQLCOM_UNLOCK_TABLES;
	}
	table_or_tables
	{}
7918
        ;
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7921
/*
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** Handler: direct access to ISAM functions
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*/

handler:
	HANDLER_SYM table_ident OPEN_SYM opt_table_alias
	{
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	  LEX *lex= Lex;
	  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
7934
	{
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	  LEX *lex= Lex;
	  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
7941
	{
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	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_HA_READ;
	  lex->ha_rkey_mode= HA_READ_KEY_EXACT;	/* Avoid purify warnings */
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	  lex->current_select->select_limit= 1;
	  lex->current_select->offset_limit= 0L;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
7948
	    YYABORT;
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        }
7950
        handler_read_or_scan where_clause opt_limit_clause {}
7951
        ;
7952

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handler_read_or_scan:
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	handler_scan_function         { Lex->ident= null_lex_str; }
        | ident handler_rkey_function { Lex->ident= $1; }
7956
        ;
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handler_scan_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
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	| 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;  }
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	| 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))
7974
	    YYABORT;
7975 7976
	} '(' values ')' { }
        ;
7977 7978

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;   }
7983 7984
	| LT     { $$=HA_READ_BEFORE_KEY;  }
        ;
7985

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/* GRANT / REVOKE */

revoke:
7989
	REVOKE clear_privileges revoke_command
7990 7991 7992 7993
	{}
        ;

revoke_command:
7994
	grant_privileges ON opt_table grant_ident FROM grant_list
7995
	{
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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;
8024
        }
8025
	|
8026
	ALL opt_privileges ',' GRANT OPTION FROM grant_list
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	{
	  Lex->sql_command = SQLCOM_REVOKE_ALL;
	}
8030
	;
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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
8039
	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;
        }
8084
        ;
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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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8095
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; }
8120 8121
	| CREATE ROUTINE_SYM { Lex->grant |= CREATE_PROC_ACL; }
	| ALTER ROUTINE_SYM { Lex->grant |= ALTER_PROC_ACL; }
8122
	| CREATE USER { Lex->grant |= CREATE_USER_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;
	}
	;
8168

8169
grant_ident:
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	'*'
	  {
8172
	    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));
8180
	      YYABORT;
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	    }
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	  }
	| ident '.' '*'
	  {
8185
	    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;
	    }
	  }
	| '*' '.' '*'
	  {
8198
	    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:
8231
	grant_user  { if (Lex->users_list.push_back($1)) YYABORT;}
8232
	| grant_list ',' grant_user
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	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;
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grant_user:
	user IDENTIFIED_SYM BY TEXT_STRING
	{
	   $$=$1; $1->password=$4;
	   if ($4.length)
	   {
8246
             if (YYTHD->variables.old_passwords)
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             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
               if (buff)
                 make_scrambled_password_323(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH_323;
             }
             else
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
               if (buff)
                 make_scrambled_password(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH;
             }
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	  }
	}
	| user IDENTIFIED_SYM BY PASSWORD TEXT_STRING
8267
	  { $$= $1; $1->password= $5; }
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	| user
8269
	  { $$= $1; $1->password= null_lex_str; }
8270
        ;
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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 */
8308
        | REQUIRE_SYM require_list
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          {
            Lex->ssl_type=SSL_TYPE_SPECIFIED;
          }
8312
        | REQUIRE_SYM SSL_SYM
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          {
            Lex->ssl_type=SSL_TYPE_ANY;
          }
8316
        | REQUIRE_SYM X509_SYM
8317 8318 8319 8320 8321 8322 8323
          {
            Lex->ssl_type=SSL_TYPE_X509;
          }
	| REQUIRE_SYM NONE_SYM
	  {
	    Lex->ssl_type=SSL_TYPE_NONE;
	  }
8324
          ;
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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;
8342
	}
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        | MAX_UPDATES_PER_HOUR ulong_num
8344
        {
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	  LEX *lex=Lex;
	  lex->mqh.updates=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::UPDATES_PER_HOUR;
8348
	}
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        | MAX_CONNECTIONS_PER_HOUR ulong_num
8350
        {
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	  LEX *lex=Lex;
	  lex->mqh.conn_per_hour= $2;
	  lex->mqh.specified_limits|= USER_RESOURCES::CONNECTIONS_PER_HOUR;
8354
	}
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        | MAX_USER_CONNECTIONS_SYM ulong_num
8356
        {
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	  LEX *lex=Lex;
          lex->mqh.user_conn= $2;
          lex->mqh.specified_limits|= USER_RESOURCES::USER_CONNECTIONS;
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	}
        ;
8362

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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 {}
8371
	;
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opt_work:
	/* empty */ {}
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	| WORK_SYM  {}
8376
        ;
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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
8407
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
8412
	}
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	| ROLLBACK_SYM opt_work
	  TO_SYM opt_savepoint ident
8415
	{
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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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8440
/*
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   UNIONS : glue selects together
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*/


8445
union_clause:
8446
	/* empty */ {}
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	| union_list
	;
8449 8450

union_list:
8451
	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");
8458
	    YYABORT;
8459
	  }
8460
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
8461
	  {
8462
            yyerror(ER(ER_SYNTAX_ERROR));
8463 8464
	    YYABORT;
	  }
8465
	  if (mysql_new_select(lex, 0))
8466
	    YYABORT;
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          mysql_init_select(lex);
8468
	  lex->current_select->linkage=UNION_TYPE;
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          if ($2) /* UNION DISTINCT - remember position */
            lex->current_select->master_unit()->union_distinct=
                                                      lex->current_select;
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	}
8473
	select_init {}
8474
	;
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union_opt:
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	/* Empty */ { $$= 0; }
	| union_list { $$= 1; }
	| union_order_or_limit { $$= 1; }
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	;
8481

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union_order_or_limit:
8483
	  {
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	    THD *thd= YYTHD;
8485
	    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";
8497
	  }
8498
	order_or_limit
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          {
	    THD *thd= YYTHD;
8501
	    thd->lex->current_select->no_table_names_allowed= 0;
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	    thd->where= "";
          }
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	;

order_or_limit:
8507 8508
	order_clause opt_limit_clause_init
	| limit_clause
8509
	;
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union_option:
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	/* empty */ { $$=1; }
	| DISTINCT  { $$=1; }
	| ALL       { $$=0; }
        ;
8516

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singlerow_subselect:
	subselect_start singlerow_subselect_init
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	subselect_end
	{
	  $$= $2;
	};
8523

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singlerow_subselect_init:
8525
	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:
8539
	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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	};
8544

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

in_subselect_init:
8553
  select_init2
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  {
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    $$= Lex->current_select->master_unit()->first_select();
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  };

8558
subselect_start:
8559
	'(' SELECT_SYM
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	{
8561
	  LEX *lex=Lex;
8562
	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
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	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
8565 8566
	  {
            yyerror(ER(ER_SYNTAX_ERROR));
8567 8568
	    YYABORT;
	  }
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	  if (mysql_new_select(Lex, 1))
	    YYABORT;
	};
8572 8573

subselect_end:
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	')'
	{
	  LEX *lex=Lex;
8577
	  lex->current_select = lex->current_select->return_after_parsing();
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	};
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8580 8581 8582 8583 8584 8585 8586 8587 8588 8589 8590 8591 8592 8593 8594 8595 8596 8597 8598 8599 8600 8601 8602 8603 8604 8605 8606 8607 8608 8609 8610 8611 8612 8613 8614 8615 8616 8617 8618 8619 8620 8621 8622 8623
opt_view_list:
	/* empty */ {}
	| '(' 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)));
	  }
	;

or_replace:
	/* empty */	 { Lex->create_view_mode= VIEW_CREATE_NEW; }
	| OR_SYM REPLACE { Lex->create_view_mode= VIEW_CREATE_OR_REPLACE; }
	;

algorithm:
	/* empty */
	  { Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED; }
	| 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; }
	;
check_option:
        /* empty */
          { 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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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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      }
    | XA_SYM END xid opt_suspend_or_migrate
      {
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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
     {
       TEST_ASSERT($1->length() <= MAXGTRIDSIZE);
       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
         YYABORT;
       Lex->xid->set(1L, $1->ptr(), $1->length(), 0, 0);
     }
     | text_string ',' text_string
     {
       TEST_ASSERT($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
       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
     {
       TEST_ASSERT($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
       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;   }
    ;

opt_suspend_or_migrate:
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | SUSPEND_SYM           { Lex->xa_opt=XA_SUSPEND;     }
    | FOR_SYM MIGRATE_SYM   { Lex->xa_opt=XA_FOR_MIGRATE; }
    ;