sql_yacc.yy

/* Copyright (C) 2000-2003 MySQL AB

   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.

   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.

   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 */

/* sql_yacc.yy */

%{
/* 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.
*/
#define YYPARSE_PARAM yythd
#define YYLEX_PARAM yythd
#define YYTHD ((THD *)yythd)

#define MYSQL_YACC
#define YYINITDEPTH 100
#define YYMAXDEPTH 3200				/* Because of 64K stack */
#define Lex (YYTHD->lex)
#define Select Lex->current_select
#include "mysql_priv.h"
#include "slave.h"
#include "lex_symbol.h"
#include "item_create.h"
#include "sp_head.h"
#include "sp_pcontext.h"
#include "sp_rcontext.h"
#include "sp.h"
#include <myisam.h>
#include <myisammrg.h>

int yylex(void *yylval, void *yythd);

#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; }}

#define WARN_DEPRECATED(A,B) \
  push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN, \
		      ER_WARN_DEPRECATED_SYNTAX, \
		      ER(ER_WARN_DEPRECATED_SYNTAX), (A), (B)); 

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

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

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

%pure_parser					/* We have threads */

%token	END_OF_INPUT

%token CLOSE_SYM
%token HANDLER_SYM
%token LAST_SYM
%token NEXT_SYM
%token PREV_SYM

%token	DIV_SYM
%token	EQ
%token	EQUAL_SYM
%token	SOUNDS_SYM
%token	GE
%token	GT_SYM
%token	LE
%token	LT
%token	NE
%token	IS
%token	MOD_SYM
%token	SHIFT_LEFT
%token	SHIFT_RIGHT
%token  SET_VAR

%token	ABORT_SYM
%token	ADD
%token	AFTER_SYM
%token	ALTER
%token	ANALYZE_SYM
%token	ANY_SYM
%token	AVG_SYM
%token	BEGIN_SYM
%token	BINLOG_SYM
%token  CALL_SYM
%token	CHANGE
%token	CLIENT_SYM
%token	COMMENT_SYM
%token	COMMIT_SYM
%token  CONSISTENT_SYM
%token	COUNT_SYM
%token	CREATE
%token	CROSS
%token  CUBE_SYM
%token  DEFINER_SYM
%token	DELETE_SYM
%token  DETERMINISTIC_SYM
%token	DUAL_SYM
%token	DO_SYM
%token	DROP
%token	EVENTS_SYM
%token	EXECUTE_SYM
%token	EXPANSION_SYM
%token	FLUSH_SYM
%token  HELP_SYM
%token	INSERT
%token	RELAY_THREAD
%token	KILL_SYM
%token	LOAD
%token	LOCKS_SYM
%token	LOCK_SYM
%token	MASTER_SYM
%token	MAX_SYM
%token	MIN_SYM
%token	NONE_SYM
%token	OPTIMIZE
%token	PURGE
%token	REPAIR
%token	REPLICATION
%token	RESET_SYM
%token	ROLLBACK_SYM
%token  ROLLUP_SYM
%token	SAVEPOINT_SYM
%token	SELECT_SYM
%token	SHOW
%token	SLAVE
%token  SNAPSHOT_SYM
%token  SQL_SYM
%token	SQL_THREAD
%token	START_SYM
%token	STD_SYM
%token  VARIANCE_SYM
%token	STOP_SYM
%token	SUM_SYM
%token	ADDDATE_SYM
%token	SUPER_SYM
%token	TRUNCATE_SYM
%token	UNLOCK_SYM
%token	UNTIL_SYM
%token	UPDATE_SYM

%token	ACTION
%token	AGGREGATE_SYM
%token	ALGORITHM_SYM
%token	ALL
%token	AND_SYM
%token	AND_AND_SYM
%token	AS
%token	ASC
%token	AUTO_INC
%token	AVG_ROW_LENGTH
%token	BACKUP_SYM
%token	BERKELEY_DB_SYM
%token	BINARY
%token  BIN_NUM
%token	BIT_SYM
%token	BOOL_SYM
%token	BOOLEAN_SYM
%token	BOTH
%token	BTREE_SYM
%token	BY
%token	BYTE_SYM
%token	CACHE_SYM
%token	CASCADE
%token  CASCADED
%token	CAST_SYM
%token	CHAIN_SYM
%token	CHARSET
%token	CHECKSUM_SYM
%token	CHECK_SYM
%token	COMMITTED_SYM
%token	COLLATE_SYM
%token	COLLATION_SYM
%token	COLUMNS
%token	COLUMN_SYM
%token	COMPACT_SYM
%token	CONCURRENT
%token  CONDITION_SYM
%token	CONNECTION_SYM
%token	CONSTRAINT
%token  CONTAINS_SYM
%token  CONTINUE_SYM
%token	CONVERT_SYM
%token  CURRENT_USER
%token	DATABASES
%token	DATA_SYM
%token  DECLARE_SYM
%token	DEFAULT
%token	DELAYED_SYM
%token	DELAY_KEY_WRITE_SYM
%token	DESC
%token	DESCRIBE
%token	DES_KEY_FILE
%token	DISABLE_SYM
%token	DISCARD
%token	DISTINCT
%token  DUPLICATE_SYM
%token	DYNAMIC_SYM
%token  EACH_SYM
%token	ENABLE_SYM
%token	ENCLOSED
%token	ESCAPED
%token	DIRECTORY_SYM
%token	ESCAPE_SYM
%token	EXISTS
%token  EXIT_SYM
%token	EXTENDED_SYM
%token	FALSE_SYM
%token  FETCH_SYM
%token	FILE_SYM
%token	FIRST_SYM
%token	FIXED_SYM
%token	FLOAT_NUM
%token	FORCE_SYM
%token	FOREIGN
%token  FOUND_SYM
%token	FROM
%token	FULL
%token	FULLTEXT_SYM
%token	GLOBAL_SYM
%token	GRANT
%token	GRANTS
%token	GREATEST_SYM
%token	GROUP
%token	HAVING
%token	HASH_SYM
%token	HEX_NUM
%token	HIGH_PRIORITY
%token	HOSTS_SYM
%token	IDENT
%token	IDENT_QUOTED
%token	IGNORE_SYM
%token	IMPORT
%token	INDEX_SYM
%token	INDEXES
%token	INFILE
%token	INNER_SYM
%token	INNOBASE_SYM
%token  INOUT_SYM
%token	INTO
%token	IN_SYM
%token  INVOKER_SYM
%token	ISOLATION
%token	JOIN_SYM
%token	KEYS
%token	KEY_SYM
%token	LEADING
%token	LEAST_SYM
%token	LEAVES
%token	LEVEL_SYM
%token	LEX_HOSTNAME
%token  LANGUAGE_SYM
%token	LIKE
%token	LINES
%token	LOCAL_SYM
%token  LOCATOR_SYM
%token	LOG_SYM
%token	LOGS_SYM
%token	LONG_NUM
%token	LONG_SYM
%token	LOW_PRIORITY
%token	MERGE_SYM
%token	MASTER_HOST_SYM
%token	MASTER_USER_SYM
%token	MASTER_LOG_FILE_SYM
%token	MASTER_LOG_POS_SYM
%token	MASTER_PASSWORD_SYM
%token	MASTER_PORT_SYM
%token	MASTER_CONNECT_RETRY_SYM
%token	MASTER_SERVER_ID_SYM
%token	MASTER_SSL_SYM
%token	MASTER_SSL_CA_SYM
%token	MASTER_SSL_CAPATH_SYM
%token	MASTER_SSL_CERT_SYM
%token	MASTER_SSL_CIPHER_SYM
%token	MASTER_SSL_KEY_SYM
%token	RELAY_LOG_FILE_SYM
%token	RELAY_LOG_POS_SYM
%token	MATCH
%token	MAX_ROWS
%token	MAX_CONNECTIONS_PER_HOUR
%token	MAX_QUERIES_PER_HOUR
%token	MAX_UPDATES_PER_HOUR
%token	MAX_USER_CONNECTIONS_SYM
%token	MEDIUM_SYM
%token	MIN_ROWS
%token  MUTEX_SYM
%token	NAMES_SYM
%token	NAME_SYM
%token	NATIONAL_SYM
%token	NATURAL
%token  NDBCLUSTER_SYM
%token	NEW_SYM
%token	NCHAR_SYM
%token	NCHAR_STRING
%token  NVARCHAR_SYM
%token	NOT_SYM
%token	NOT2_SYM
%token	NO_SYM
%token	NULL_SYM
%token	NUM
%token	OFFSET_SYM
%token	ON
%token  ONE_SHOT_SYM
%token	OPEN_SYM
%token	OPTION
%token	OPTIONALLY
%token	OR_SYM
%token	OR2_SYM
%token	OR_OR_SYM
%token	ORDER_SYM
%token  OUT_SYM
%token	OUTER
%token	OUTFILE
%token	DUMPFILE
%token	PACK_KEYS_SYM
%token	PARTIAL
%token	PRIMARY_SYM
%token	PRIVILEGES
%token	PROCESS
%token	PROCESSLIST_SYM
%token	QUERY_SYM
%token	RAID_0_SYM
%token	RAID_STRIPED_SYM
%token	RAID_TYPE
%token	RAID_CHUNKS
%token	RAID_CHUNKSIZE
%token	READ_SYM
%token	READS_SYM
%token	REAL_NUM
%token	REDUNDANT_SYM
%token	REFERENCES
%token	REGEXP
%token	RELEASE_SYM
%token	RELOAD
%token	RENAME
%token	REPEATABLE_SYM
%token	REQUIRE_SYM
%token	RESOURCES
%token	RESTORE_SYM
%token	RESTRICT
%token	REVOKE
%token	ROUTINE_SYM
%token	ROWS_SYM
%token	ROW_FORMAT_SYM
%token	ROW_SYM
%token	RTREE_SYM
%token  SECURITY_SYM
%token	SET
%token  SEPARATOR_SYM
%token	SERIAL_SYM
%token	SERIALIZABLE_SYM
%token	SESSION_SYM
%token	SIMPLE_SYM
%token	SHUTDOWN
%token	SPATIAL_SYM
%token  SPECIFIC_SYM
%token  SQLEXCEPTION_SYM
%token  SQLSTATE_SYM
%token  SQLWARNING_SYM
%token  SSL_SYM
%token	STARTING
%token	STATUS_SYM
%token	STORAGE_SYM
%token	STRAIGHT_JOIN
%token	SUBJECT_SYM
%token	TABLES
%token	TABLE_SYM
%token	TABLESPACE
%token	TEMPORARY
%token	TEMPTABLE_SYM
%token	TERMINATED
%token	TEXT_STRING
%token	TO_SYM
%token	TRAILING
%token	TRANSACTION_SYM
%token  TRIGGER_SYM
%token	TRUE_SYM
%token	TYPE_SYM
%token  TYPES_SYM
%token	FUNC_ARG0
%token	FUNC_ARG1
%token	FUNC_ARG2
%token	FUNC_ARG3
%token	RETURN_SYM
%token	RETURNS_SYM
%token	UDF_SONAME_SYM
%token	UDF_RETURNS_SYM
%token	FUNCTION_SYM
%token	UNCOMMITTED_SYM
%token	UNDEFINED_SYM
%token	UNDERSCORE_CHARSET
%token  UNDO_SYM
%token	UNICODE_SYM
%token	UNION_SYM
%token	UNIQUE_SYM
%token	UNKNOWN_SYM
%token	USAGE
%token	USE_FRM
%token	USE_SYM
%token	USING
%token	VALUE_SYM
%token	VALUES
%token	VARIABLES
%token	VIEW_SYM
%token	WHERE
%token	WITH
%token	WRITE_SYM
%token  NO_WRITE_TO_BINLOG
%token	X509_SYM
%token	XOR
%token	COMPRESSED_SYM
%token  ROW_COUNT_SYM

%token  ERRORS
%token  WARNINGS

%token	ASCII_SYM
%token	BIGINT
%token	BLOB_SYM
%token	CHAR_SYM
%token	CHANGED
%token	COALESCE
%token	DATETIME
%token	DATE_SYM
%token	DECIMAL_SYM
%token	DOUBLE_SYM
%token	ENUM
%token	FAST_SYM
%token	FLOAT_SYM
%token  GEOMETRY_SYM
%token	INT_SYM
%token	LIMIT
%token	LONGBLOB
%token	LONGTEXT
%token	MEDIUMBLOB
%token	MEDIUMINT
%token	MEDIUMTEXT
%token	NUMERIC_SYM
%token	PRECISION
%token  PREPARE_SYM
%token  DEALLOCATE_SYM
%token	QUICK
%token	REAL
%token	SIGNED_SYM
%token	SMALLINT
%token	STRING_SYM
%token	TEXT_SYM
%token	TIMESTAMP
%token	TIMESTAMP_ADD
%token	TIMESTAMP_DIFF
%token	TIME_SYM
%token	TINYBLOB
%token	TINYINT
%token	TINYTEXT
%token	ULONGLONG_NUM
%token	UNSIGNED
%token	VARBINARY
%token	VARCHAR
%token	VARYING
%token	ZEROFILL

%token	ADDDATE_SYM
%token	AGAINST
%token	ATAN
%token	BETWEEN_SYM
%token	BIT_AND
%token	BIT_OR
%token  BIT_XOR
%token	CASE_SYM
%token	CONCAT
%token	CONCAT_WS
%token  CONVERT_TZ_SYM
%token	CURDATE
%token	CURTIME
%token	DATABASE
%token	DATE_ADD_INTERVAL
%token	DATE_SUB_INTERVAL
%token	DAY_HOUR_SYM
%token	DAY_MICROSECOND_SYM
%token	DAY_MINUTE_SYM
%token	DAY_SECOND_SYM
%token	DAY_SYM
%token	DECODE_SYM
%token	DES_ENCRYPT_SYM
%token	DES_DECRYPT_SYM
%token	ELSE
%token	ELT_FUNC
%token	ENCODE_SYM
%token	ENGINE_SYM
%token	ENGINES_SYM
%token	ENCRYPT
%token	EXPORT_SET
%token	EXTRACT_SYM
%token	FIELD_FUNC
%token	FORMAT_SYM
%token	FOR_SYM
%token  FRAC_SECOND_SYM
%token	FROM_UNIXTIME
%token	GEOMCOLLFROMTEXT
%token	GEOMFROMTEXT
%token	GEOMFROMWKB
%token  GEOMETRYCOLLECTION
%token  GROUP_CONCAT_SYM
%token	GROUP_UNIQUE_USERS
%token  GET_FORMAT
%token	HOUR_MICROSECOND_SYM
%token	HOUR_MINUTE_SYM
%token	HOUR_SECOND_SYM
%token	HOUR_SYM
%token	IDENTIFIED_SYM
%token	IF
%token	INSERT_METHOD
%token	INTERVAL_SYM
%token	LAST_INSERT_ID
%token	LEFT
%token	LINEFROMTEXT
%token  LINESTRING
%token	LOCATE
%token	MAKE_SET_SYM
%token	MASTER_POS_WAIT
%token  MICROSECOND_SYM
%token	MINUTE_MICROSECOND_SYM
%token	MINUTE_SECOND_SYM
%token	MINUTE_SYM
%token	MODE_SYM
%token	MODIFIES_SYM
%token	MODIFY_SYM
%token	MONTH_SYM
%token	MLINEFROMTEXT
%token	MPOINTFROMTEXT
%token	MPOLYFROMTEXT
%token  MULTILINESTRING
%token  MULTIPOINT
%token  MULTIPOLYGON
%token	NOW_SYM
%token	OLD_PASSWORD
%token	PASSWORD
%token	POINTFROMTEXT
%token	POINT_SYM
%token	POLYFROMTEXT
%token  POLYGON
%token	POSITION_SYM
%token	PROCEDURE
%token	QUARTER_SYM
%token	RAND
%token	REPLACE
%token	RIGHT
%token	ROUND
%token	SECOND_SYM
%token	SECOND_MICROSECOND_SYM
%token	SHARE_SYM
%token	SUBDATE_SYM
%token	SUBSTRING
%token	SUBSTRING_INDEX
%token	TRIM
%token	UNIQUE_USERS
%token	UNIX_TIMESTAMP
%token	USER
%token	UTC_DATE_SYM
%token	UTC_TIME_SYM
%token	UTC_TIMESTAMP_SYM
%token	WEEK_SYM
%token	WHEN_SYM
%token	WORK_SYM
%token	YEAR_MONTH_SYM
%token	YEAR_SYM
%token	YEARWEEK
%token	BENCHMARK_SYM
%token	END
%token	THEN_SYM

%token	SQL_BIG_RESULT
%token	SQL_CACHE_SYM
%token	SQL_CALC_FOUND_ROWS
%token	SQL_NO_CACHE_SYM
%token	SQL_SMALL_RESULT
%token  SQL_BUFFER_RESULT

%token  CURSOR_SYM
%token  ELSEIF_SYM
%token  ITERATE_SYM
%token  GOTO_SYM
%token  LABEL_SYM
%token  LEAVE_SYM
%token  LOOP_SYM
%token  REPEAT_SYM
%token  UNTIL_SYM
%token  WHILE_SYM
%token  ASENSITIVE_SYM
%token  INSENSITIVE_SYM
%token  SENSITIVE_SYM

%token  ISSUER_SYM
%token  SUBJECT_SYM
%token  CIPHER_SYM

%token  BEFORE_SYM
%left   SET_VAR
%left	OR_OR_SYM OR_SYM OR2_SYM XOR
%left	AND_SYM AND_AND_SYM
%left	BETWEEN_SYM CASE_SYM WHEN_SYM THEN_SYM ELSE
%left	EQ EQUAL_SYM GE GT_SYM LE LT NE IS LIKE REGEXP IN_SYM
%left	'|'
%left	'&'
%left	SHIFT_LEFT SHIFT_RIGHT
%left	'-' '+'
%left	'*' '/' '%' DIV_SYM MOD_SYM
%left   '^'
%left	NEG '~'
%right	NOT_SYM NOT2_SYM
%right	BINARY COLLATE_SYM

%type <lex_str>
	IDENT IDENT_QUOTED TEXT_STRING REAL_NUM FLOAT_NUM NUM LONG_NUM HEX_NUM
	LEX_HOSTNAME ULONGLONG_NUM field_ident select_alias ident ident_or_text
        UNDERSCORE_CHARSET IDENT_sys TEXT_STRING_sys TEXT_STRING_literal
	NCHAR_STRING opt_component key_cache_name
        sp_opt_label BIN_NUM

%type <lex_str_ptr>
	opt_table_alias

%type <table>
	table_ident table_ident_nodb references

%type <simple_string>
	remember_name remember_end opt_ident opt_db text_or_password
	opt_constraint constraint ident_or_empty

%type <string>
	text_string opt_gconcat_separator

%type <num>
	type int_type real_type order_dir opt_field_spec lock_option
	udf_type if_exists opt_local opt_table_options table_options
        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
        opt_ignore_leaves fulltext_options spatial_type union_option
        start_transaction_opts opt_chain opt_work_and_chain opt_release

%type <ulong_num>
	ULONG_NUM raid_types merge_insert_types

%type <ulonglong_number>
	ulonglong_num

%type <lock_type>
	replace_lock_option opt_low_priority insert_lock_option load_data_lock

%type <item>
	literal text_literal insert_ident order_ident
	simple_ident select_item2 expr opt_expr opt_else sum_expr in_sum_expr
	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
	using_list expr_or_default set_expr_or_default interval_expr
	param_marker singlerow_subselect singlerow_subselect_init
	exists_subselect exists_subselect_init geometry_function
	signed_literal now_or_signed_literal opt_escape
	sp_opt_default
	simple_ident_nospvar simple_ident_q

%type <item_num>
	NUM_literal

%type <item_list>
	expr_list udf_expr_list udf_expr_list2 when_list
	ident_list ident_list_arg

%type <key_type>
	key_type opt_unique_or_fulltext constraint_key_type

%type <key_alg>
	key_alg opt_btree_or_rtree

%type <string_list>
	key_usage_list

%type <key_part>
	key_part

%type <table_list>
	join_table_list  join_table
        table_factor table_ref

%type <date_time_type> date_time_type;
%type <interval> interval

%type <interval_time_st> interval_time_st

%type <db_type> storage_engines

%type <row_type> row_types

%type <tx_isolation> isolation_types

%type <ha_rkey_mode> handler_rkey_mode

%type <cast_type> cast_type

%type <udf_type> udf_func_type

%type <symbol> FUNC_ARG0 FUNC_ARG1 FUNC_ARG2 FUNC_ARG3 keyword

%type <lex_user> user grant_user

%type <charset>
	opt_collate
	charset_name
	charset_name_or_default
	old_or_new_charset_name
	old_or_new_charset_name_or_default
	collation_name
	collation_name_or_default

%type <variable> internal_variable_name

%type <select_lex> in_subselect in_subselect_init

%type <boolfunc2creator> comp_op

%type <NONE>
	query verb_clause create change select do drop insert replace insert2
	insert_values update delete truncate rename
	show describe load alter optimize keycache preload flush
	reset purge begin commit rollback savepoint release
	slave master_def master_defs master_file_def slave_until_opts
	repair restore backup analyze check start checksum
	field_list field_list_item field_spec kill column_def key_def
	keycache_list assign_to_keycache preload_list preload_keys
	select_item_list select_item values_list no_braces
	opt_limit_clause delete_limit_clause fields opt_values values
	procedure_list procedure_list2 procedure_item
	when_list2 expr_list2 udf_expr_list3 handler
	opt_precision opt_ignore opt_column opt_restrict
	grant revoke set lock unlock string_list field_options field_option
	field_opt_list opt_binary table_lock_list table_lock
	ref_list opt_on_delete opt_on_delete_list opt_on_delete_item use
	opt_delete_options opt_delete_option varchar nchar nvarchar
	opt_outer table_list table_name opt_option opt_place
	opt_attribute opt_attribute_list attribute column_list column_list_id
	opt_column_list grant_privileges opt_table grant_list grant_option
	object_privilege object_privilege_list user_list rename_list
	clear_privileges flush_options flush_option
	equal optional_braces opt_key_definition key_usage_list2
	opt_mi_check_type opt_to mi_check_types normal_join
	table_to_table_list table_to_table opt_table_list opt_as
	handler_rkey_function handler_read_or_scan
	single_multi table_wild_list table_wild_one opt_wild
	union_clause union_list
	precision subselect_start opt_and charset
	subselect_end select_var_list select_var_list_init help opt_len
	opt_extended_describe
        prepare prepare_src execute deallocate 
	statement sp_suid opt_view_list view_list or_replace algorithm
	sp_c_chistics sp_a_chistics sp_chistic sp_c_chistic
END_OF_INPUT

%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

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


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

verb_clause:
	  statement
	| begin
	;

/* Verb clauses, except begin */
statement:
	  alter
	| analyze
	| backup
	| call
	| change
	| check
	| checksum
	| commit
	| create
        | deallocate
	| delete
	| describe
	| do
	| drop
        | execute
	| flush
	| grant
	| handler
	| help
	| insert
	| kill
	| load
	| lock
	| optimize
        | keycache
	| preload
        | prepare
	| purge
	| release
	| rename
	| repair
	| replace
	| reset
	| restore
	| revoke
	| rollback
	| savepoint
	| select
	| set
	| show
	| slave
	| start
	| truncate
	| unlock
	| update
	| use
        ;

deallocate:
        deallocate_or_drop PREPARE_SYM ident
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          if (thd->command == COM_PREPARE)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
          lex->sql_command= SQLCOM_DEALLOCATE_PREPARE;
          lex->prepared_stmt_name= $3;
        };

deallocate_or_drop:
	DEALLOCATE_SYM |
	DROP
	;


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

prepare_src:
        TEXT_STRING_sys
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $1;
          lex->prepared_stmt_code_is_varref= FALSE;
        }
        | '@' ident_or_text
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          lex->prepared_stmt_code= $2;
          lex->prepared_stmt_code_is_varref= TRUE;
        };

execute:
        EXECUTE_SYM ident
        {
          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          if (thd->command == COM_PREPARE)
          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
          lex->sql_command= SQLCOM_EXECUTE;
          lex->prepared_stmt_name= $2;
        }
        execute_using
        {}
        ;

execute_using:
        /* nothing */
        | USING execute_var_list
        ;

execute_var_list:
        execute_var_list ',' execute_var_ident
        | execute_var_ident
        ;

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;
        }
        ;

/* help */

help:
       HELP_SYM ident_or_text
       {
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_HELP;
	  lex->help_arg= $2.str;
       };

/* change master */

change:
       CHANGE MASTER_SYM TO_SYM
        {
	  LEX *lex = Lex;
	  lex->sql_command = SQLCOM_CHANGE_MASTER;
	  bzero((char*) &lex->mi, sizeof(lex->mi));
        }
       master_defs
	{}
       ;

master_defs:
       master_def
       | master_defs ',' master_def;

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;
       }
       |
       MASTER_PORT_SYM EQ ULONG_NUM
       {
	 Lex->mi.port = $3;
       }
       |
       MASTER_CONNECT_RETRY_SYM EQ ULONG_NUM
       {
	 Lex->mi.connect_retry = $3;
       }
       | MASTER_SSL_SYM EQ ULONG_NUM
         {
           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;
         }
       | RELAY_LOG_POS_SYM EQ ULONG_NUM
         {
           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)
	    {
	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "PROCEDURE");
	      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)
            {
              my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "TRIGGER");
              YYABORT;
            }

            if (!(sp= new sp_head()))
              YYABORT;
            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);

            lex->name_and_length= $3;

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

clear_privileges:
        /* Nothing */
        {
          LEX *lex=Lex;
          lex->users_list.empty();
          lex->columns.empty();
          lex->grant= lex->grant_tot_col= 0;
	  lex->all_privileges= 0;
          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));
        }
        ;

sp_name:
	  IDENT_sys '.' IDENT_sys
	  {
	    $$= new sp_name($1, $3);
	    $$->init_qname(YYTHD);
	  }
	| IDENT_sys
	  {
	    $$= 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)
	    {
	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "FUNCTION");
	      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;
	    sp_head *sp= lex->sphead;

	    sp->m_returns_begin= lex->tok_start;
	    sp->m_returns_cs= lex->charset= NULL;
	  }
	  type
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

	    sp->m_returns_end= lex->tok_start;
	    sp->m_returns= (enum enum_field_types)$8;
	    sp->m_returns_cs= lex->charset;
	    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;
	    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; }
	| not DETERMINISTIC_SYM { Lex->sp_chistics.detistic= FALSE; }
	;

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();
	  }
          '(' 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))
	    {
	      my_error(ER_SP_DUP_PARAM, MYF(0), $1.str);
	      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))
	    {
	      my_error(ER_SP_DUP_PARAM, MYF(0), $2.str);
	      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 */ {}
	| sp_proc_stmts  { Lex->query_tables= 0; } sp_proc_stmt ';'
	;

sp_proc_stmts1:
	  sp_proc_stmt ';' {}
	| sp_proc_stmts1  { Lex->query_tables= 0; } sp_proc_stmt ';'
	;

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 */
	      my_message(ER_SP_VARCOND_AFTER_CURSHNDLR,
                         ER(ER_SP_VARCOND_AFTER_CURSHNDLR), MYF(0));
	      YYABORT;
	    }
	    if ($2.curs && $1.hndlrs)
	    { /* Cursor following handler */
	      my_message(ER_SP_CURSOR_AFTER_HANDLER,
                         ER(ER_SP_CURSOR_AFTER_HANDLER), MYF(0));
	      YYABORT;
	    }
	    $$.vars= $1.vars + $2.vars;
	    $$.conds= $1.conds + $2.conds;
	    $$.hndlrs= $1.hndlrs + $2.hndlrs;
	    $$.curs= $1.curs + $2.curs;
	  }
	;

sp_decl:
	  DECLARE_SYM sp_decl_idents type sp_opt_default
	  {
	    LEX *lex= Lex;
	    sp_pcontext *ctx= lex->spcont;
	    uint max= ctx->context_pvars();
	    enum enum_field_types type= (enum enum_field_types)$3;
	    Item *it= $4;

	    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),
						   it, type);

		in->tables= lex->query_tables;
		lex->query_tables= 0;
	        lex->sphead->add_instr(in);
	        ctx->set_isset(i, TRUE);
		ctx->set_default(i, it);
	      }
	    }
	    $$.vars= $2;
	    $$.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))
	    {
	      my_error(ER_SP_DUP_COND, MYF(0), $2.str);
	      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));
	    ctx->add_handler();
	    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;
	  }
	| 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))
	    {
	      my_error(ER_SP_DUP_CURS, MYF(0), $2.str);
	      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)
	    {
	      my_message(ER_SP_BAD_CURSOR_QUERY, ER(ER_SP_BAD_CURSOR_QUERY),
                         MYF(0));
	      YYABORT;
	    }
	    if (lex->result)
	    {
	      my_message(ER_SP_BAD_CURSOR_SELECT, ER(ER_SP_BAD_CURSOR_SELECT),
                         MYF(0));
	      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;
	    sp_instr_hpush_jump *i= (sp_instr_hpush_jump *)sp->last_instruction();

	    i->add_condition($1);
	    $$= 1;
	  }
	| sp_hcond_list ',' sp_hcond
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_instr_hpush_jump *i= (sp_instr_hpush_jump *)sp->last_instruction();

	    i->add_condition($3);
	    $$= $1 + 1;
	  }
	;

sp_cond:
	  ULONG_NUM
	  {			/* mysql errno */
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::number;
	    $$->mysqlerr= $1;
	  }
	| SQLSTATE_SYM opt_value TEXT_STRING_literal
	  {		/* SQLSTATE */
	    uint len= ($3.length < sizeof($$->sqlstate)-1 ?
                       $3.length : sizeof($$->sqlstate)-1);

	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::state;
	    memcpy($$->sqlstate, $3.str, len);
	    $$->sqlstate[len]= '\0';
	  }
	;

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

sp_hcond:
	  sp_cond
	  {
	    $$= $1;
	  }
	| ident			/* CONDITION name */
	  {
	    $$= Lex->spcont->find_cond(&$1);
	    if ($$ == NULL)
	    {
	      my_error(ER_SP_COND_MISMATCH, MYF(0), $1.str);
	      YYABORT;
	    }
	  }
	| SQLWARNING_SYM	/* SQLSTATEs 01??? */
	  {
	    $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
	    $$->type= sp_cond_type_t::warning;
	  }
	| not FOUND_SYM		/* SQLSTATEs 02??? */
	  {
	    $$= (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))
	    {
	      my_error(ER_SP_DUP_VAR, MYF(0), $1.str);
	      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))
	    {
	      my_error(ER_SP_DUP_VAR, MYF(0), $3.str);
	      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 */
	      my_message(ER_SP_NO_USE, ER(ER_SP_NO_USE), MYF(0));
	      YYABORT;
	    }
	    /* Don't add an instruction for empty SET statements.
	    ** (This happens if the SET only contained local variables,
	    **  which get their set instructions generated separately.)
	    */
	    if (lex->sql_command != SQLCOM_SET_OPTION ||
		! lex->var_list.is_empty())
	    {
              /*
                Currently we can't handle queries inside a FUNCTION or
                TRIGGER, because of the way table locking works. This is 
                unfortunate, and limits the usefulness of functions and
                especially triggers a tremendously, but it's nothing we 
                can do about this at the moment.
              */
	      if (sp->m_type != TYPE_ENUM_PROCEDURE)
	      {
		my_message(ER_SP_BADSTATEMENT, ER(ER_SP_BADSTATEMENT), MYF(0));
		YYABORT;
	      }
	      else
	      {
		sp_instr_stmt *i=new sp_instr_stmt(sp->instructions(),
						   lex->spcont);

		/* Extract the query statement from the tokenizer:
                   The end is either lex->tok_end or tok->ptr. */
		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);
		i->set_lex(lex);
		sp->add_instr(i);
		lex->sp_lex_in_use= TRUE;
	      }
            }
	    sp->restore_lex(YYTHD);
          }
	| RETURN_SYM expr
	  {
	    LEX *lex= Lex;

	    if (lex->sphead->m_type == TYPE_ENUM_PROCEDURE)
	    {
	      my_message(ER_SP_BADRETURN, ER(ER_SP_BADRETURN), MYF(0));
	      YYABORT;
	    }
	    else
	    {
	      sp_instr_freturn *i;

	      if ($2->type() == Item::SUBSELECT_ITEM)
	      {  /* QQ For now, just disallow subselects as values */
	        my_message(ER_SP_BADSTATEMENT, ER(ER_SP_BADSTATEMENT), MYF(0));
	        YYABORT;
	      }
	      i= new sp_instr_freturn(lex->sphead->instructions(),
				      lex->spcont,
		                      $2, lex->sphead->m_returns);
	      lex->sphead->add_instr(i);
	      lex->sphead->m_has_return= TRUE;
	    }
	  }
	| IF sp_if END IF {}
	| CASE_SYM WHEN_SYM
	  {
	    Lex->sphead->m_simple_case= FALSE;
	  }
	  sp_case END CASE_SYM {}
	| CASE_SYM expr WHEN_SYM
	  {
	    /* 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(),
					       lex->spcont,
	                                       offset, $2, MYSQL_TYPE_STRING);
	    LEX_STRING dummy;

	    dummy.str= (char *)"";
	    dummy.length= 0;
	    lex->spcont->push_pvar(&dummy, MYSQL_TYPE_STRING, sp_param_in);
	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
	    lex->sphead->add_instr(i);
	    lex->sphead->m_simple_case= TRUE;
	  }
	  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)
	    {
	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "LEAVE", $2.str);
	      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)
	    {
	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "ITERATE", $2.str);
	      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)
	    {
	      my_error(ER_SP_LABEL_REDEFINE, MYF(0), $2.str);
	      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)
	    {
	      my_message(ER_SP_GOTO_IN_HNDLR, ER(ER_SP_GOTO_IN_HNDLR), MYF(0));
	      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))
	    {
	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
	      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))
	    {
	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $3.str);
	      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))
	    {
	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
	      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)))
	    {
	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
	      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)))
	    {
	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $3.str);
	      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:
	  expr THEN_SYM
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint ip= sp->instructions();
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, ctx, $1);

	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
            sp->add_instr(i);
	  }
	  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:
	  expr THEN_SYM
	  {
            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)
	      i= new sp_instr_jump_if_not(ip, ctx, $1);
	    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);
	      Item *expr= new Item_func_eq(var, $1);

	      i= new sp_instr_jump_if_not(ip, ctx, expr);
              lex->variables_used= 1;
	    }
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
            sp->add_instr(i);
	  }
	  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());
	  }
	;

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);

	    sp->add_instr(i);
	  }
	| ELSE sp_proc_stmts1 {}
	| WHEN_SYM sp_case {}
	;

sp_labeled_control:
	  IDENT ':'
	  {
	    LEX *lex= Lex;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($1.str);

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

	    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)
	      {
	        my_error(ER_SP_LABEL_MISMATCH, MYF(0), $5.str);
	        YYABORT;
	      }
	    }
	    lex->sphead->backpatch(lex->spcont->pop_label());
	  }
	;

sp_opt_label:
	  /* Empty  */
	  { $$.str= NULL; $$.length= 0; }
	| IDENT
	  { $$= $1; }
	;

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
	  {
	    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
	  {
	    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);
	  }
	| WHILE_SYM expr DO_SYM
	  {
	    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,
							       $2);

	    /* Jumping forward */
	    sp->push_backpatch(i, lex->spcont->last_label());
	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
            sp->add_instr(i);
	  }
	  sp_proc_stmts1 END WHILE_SYM
	  {
	    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);
	  }
	| REPEAT_SYM sp_proc_stmts1 UNTIL_SYM expr END REPEAT_SYM
	  {
	    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,
							       $4, lab->ip);

	    i->tables= lex->query_tables;
	    lex->query_tables= 0;
            lex->sphead->add_instr(i);
	  }
	;

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; }
          ;

create2:
        '(' create2a {}
        | opt_create_table_options create3 {}
        | LIKE table_ident
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$2))
              YYABORT;
          }
        | '(' LIKE table_ident ')'
          {
            LEX *lex=Lex;
            if (!(lex->name= (char *)$3))
              YYABORT;
          }
        ;

create2a:
        field_list ')' opt_create_table_options create3 {}
	|  create_select ')' { Select->set_braces(1);} union_opt {}
        ;

create3:
	/* empty */ {}
	| opt_duplicate opt_as     create_select
          { Select->set_braces(0);} union_clause {}
	| opt_duplicate opt_as '(' create_select ')'
          { Select->set_braces(1);} union_opt {}
        ;

create_select:
          SELECT_SYM
          {
	    LEX *lex=Lex;
	    lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
	    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;
	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
	    lex->current_select->table_list.save_and_clear(&lex->save_list);
	    mysql_init_select(lex);
	    lex->current_select->parsing_place= SELECT_LIST;
          }
          select_options select_item_list
	  {
	    Select->parsing_place= NO_MATTER;
	  }
	  opt_select_from
	  {
	    /*
              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);
	  }
        ;

opt_as:
	/* empty */ {}
	| AS	    {};

opt_create_database_options:
	/* empty */			{}
	| create_database_options	{};

create_database_options:
	create_database_option					{}
	| create_database_options create_database_option	{};

create_database_option:
	default_collation   {}
	| default_charset   {};

opt_table_options:
	/* empty */	 { $$= 0; }
	| table_options  { $$= $1;};

table_options:
	table_option	{ $$=$1; }
	| table_option table_options { $$= $1 | $2; };

table_option:
	TEMPORARY	{ $$=HA_LEX_CREATE_TMP_TABLE; };

opt_if_not_exists:
	/* empty */	 { $$= 0; }
	| IF not EXISTS	 { $$=HA_LEX_CREATE_IF_NOT_EXISTS; };

opt_create_table_options:
	/* empty */
	| create_table_options;

create_table_options_space_separated:
	create_table_option
	| create_table_option create_table_options_space_separated;

create_table_options:
	create_table_option
	| create_table_option     create_table_options
	| create_table_option ',' create_table_options;

create_table_option:
	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; }
	| 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;}
	| 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;}
	| 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; }
	| AUTO_INC opt_equal ulonglong_num	{ Lex->create_info.auto_increment_value=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AUTO;}
	| 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;}
	| 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;}
	| 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; }
	| ROW_FORMAT_SYM opt_equal row_types	{ Lex->create_info.row_type= $3;  Lex->create_info.used_fields|= HA_CREATE_USED_ROW_FORMAT; }
	| RAID_TYPE opt_equal raid_types	{ Lex->create_info.raid_type= $3; Lex->create_info.used_fields|= HA_CREATE_USED_RAID;}
	| 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;}
	| UNION_SYM opt_equal '(' table_list ')'
	  {
	    /* Move the union list to the merge_list */
	    LEX *lex=Lex;
	    TABLE_LIST *table_list= lex->select_lex.get_table_list();
	    lex->create_info.merge_list= lex->select_lex.table_list;
	    lex->create_info.merge_list.elements--;
	    lex->create_info.merge_list.first=
	      (byte*) (table_list->next_local);
	    lex->select_lex.table_list.elements=1;
	    lex->select_lex.table_list.next=
	      (byte**) &(table_list->next_local);
	    table_list->next_local= 0;
	    lex->create_info.used_fields|= HA_CREATE_USED_UNION;
	  }
	| default_charset
	| default_collation
	| INSERT_METHOD opt_equal merge_insert_types   { Lex->create_info.merge_insert_method= $3; Lex->create_info.used_fields|= HA_CREATE_USED_INSERT_METHOD;}
	| 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; }
        ;

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))
          {
            my_error(ER_CONFLICTING_DECLARATIONS, MYF(0),
                     "CHARACTER SET ", cinfo->default_table_charset->csname,
                     "CHARACTER SET ", $4->csname);
            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))
            {
              my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $4->name, cinfo->default_table_charset->csname);
              YYABORT;
            }
            Lex->create_info.default_table_charset= $4;
            Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

storage_engines:
	ident_or_text
	{
	  $$ = ha_resolve_by_name($1.str,$1.length);
	  if ($$ == DB_TYPE_UNKNOWN) {
	    my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), $1.str);
	    YYABORT;
	  }
	};

row_types:
	DEFAULT		{ $$= ROW_TYPE_DEFAULT; }
	| FIXED_SYM	{ $$= ROW_TYPE_FIXED; }
	| DYNAMIC_SYM	{ $$= ROW_TYPE_DYNAMIC; }
	| COMPRESSED_SYM { $$= ROW_TYPE_COMPRESSED; }
	| REDUNDANT_SYM	{ $$= ROW_TYPE_REDUNDANT; }
	| COMPACT_SYM	{ $$= ROW_TYPE_COMPACT; };

raid_types:
	RAID_STRIPED_SYM { $$= RAID_TYPE_0; }
	| RAID_0_SYM	 { $$= RAID_TYPE_0; }
	| ULONG_NUM	 { $$=$1;};

merge_insert_types:
       NO_SYM            { $$= MERGE_INSERT_DISABLED; }
       | FIRST_SYM       { $$= MERGE_INSERT_TO_FIRST; }
       | LAST_SYM        { $$= MERGE_INSERT_TO_LAST; };

opt_select_from:
	opt_limit_clause {}
	| select_from select_lock_type;

udf_func_type:
	/* empty */	{ $$ = UDFTYPE_FUNCTION; }
	| AGGREGATE_SYM { $$ = UDFTYPE_AGGREGATE; };

udf_type:
	STRING_SYM {$$ = (int) STRING_RESULT; }
	| REAL {$$ = (int) REAL_RESULT; }
	| INT_SYM {$$ = (int) INT_RESULT; };

field_list:
	  field_list_item
	| field_list ',' field_list_item;


field_list_item:
	   column_def
         | key_def
         ;

column_def:
	  field_spec opt_check_constraint
	| field_spec references
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
	;

key_def:
	key_type opt_ident key_alg '(' key_list ')'
	  {
	    LEX *lex=Lex;
	    lex->key_list.push_back(new Key($1,$2, $3, 0, lex->col_list));
	    lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
	| opt_constraint constraint_key_type opt_ident key_alg '(' key_list ')'
	  {
	    LEX *lex=Lex;
	    const char *key_name= $3 ? $3:$1;
	    lex->key_list.push_back(new Key($2, key_name, $4, 0,
				    lex->col_list));
	    lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
	| opt_constraint FOREIGN KEY_SYM opt_ident '(' key_list ')' references
	  {
	    LEX *lex=Lex;
	    lex->key_list.push_back(new foreign_key($4 ? $4:$1, lex->col_list,
				    $8,
				    lex->ref_list,
				    lex->fk_delete_opt,
				    lex->fk_update_opt,
				    lex->fk_match_option));
	    lex->key_list.push_back(new Key(Key::MULTIPLE, $4 ? $4 : $1,
					    HA_KEY_ALG_UNDEF, 1,
					    lex->col_list));
	    lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
	| constraint opt_check_constraint
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
	| opt_constraint check_constraint
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
	;

opt_check_constraint:
	/* empty */
	| check_constraint
	;

check_constraint:
	CHECK_SYM expr
	;

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

constraint:
	CONSTRAINT opt_ident	{ $$=$2; }
	;

field_spec:
	field_ident
	 {
	   LEX *lex=Lex;
	   lex->length=lex->dec=0; lex->type=0;
	   lex->default_value= lex->on_update_value= 0;
	   lex->comment=0;
	   lex->charset=NULL;
	 }
	type opt_attribute
	{
	  LEX *lex=Lex;
	  if (add_field_to_list(lex->thd, $1.str,
				(enum enum_field_types) $3,
				lex->length,lex->dec,lex->type,
				lex->default_value, lex->on_update_value, 
                                lex->comment,
				lex->change,&lex->interval_list,lex->charset,
				lex->uint_geom_type))
	    YYABORT;
	};

type:
	int_type opt_len field_options	{ $$=$1; }
	| real_type opt_precision field_options { $$=$1; }
	| FLOAT_SYM float_options field_options { $$=FIELD_TYPE_FLOAT; }
	| BIT_SYM			{ Lex->length= (char*) "1";
					  $$=FIELD_TYPE_BIT; }
	| BIT_SYM '(' NUM ')'		{ Lex->length= $3.str;
					  $$=FIELD_TYPE_BIT; }
	| BOOL_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
	| BOOLEAN_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
	| char '(' NUM ')' opt_binary	{ Lex->length=$3.str;
					  $$=FIELD_TYPE_STRING; }
	| char opt_binary		{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_STRING; }
	| nchar '(' NUM ')'		{ Lex->length=$3.str;
					  $$=FIELD_TYPE_STRING;
					  Lex->charset=national_charset_info; }
	| nchar				{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_STRING;
					  Lex->charset=national_charset_info; }
	| BINARY '(' NUM ')'		{ Lex->length=$3.str;
					  Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_STRING; }
	| BINARY			{ Lex->length= (char*) "1";
					  Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_STRING; }
	| varchar '(' NUM ')' opt_binary { Lex->length=$3.str;
					  $$= MYSQL_TYPE_VARCHAR; }
	| nvarchar '(' NUM ')'		{ Lex->length=$3.str;
					  $$= MYSQL_TYPE_VARCHAR;
					  Lex->charset=national_charset_info; }
	| VARBINARY '(' NUM ')' 	{ Lex->length=$3.str;
					  Lex->charset=&my_charset_bin;
					  $$= MYSQL_TYPE_VARCHAR; }
	| YEAR_SYM opt_len field_options { $$=FIELD_TYPE_YEAR; }
	| DATE_SYM			{ $$=FIELD_TYPE_DATE; }
	| TIME_SYM			{ $$=FIELD_TYPE_TIME; }
	| TIMESTAMP opt_len
	  {
	    if (YYTHD->variables.sql_mode & MODE_MAXDB)
	      $$=FIELD_TYPE_DATETIME;
	    else
            {
              /* 
                Unlike other types TIMESTAMP fields are NOT NULL by default.
              */
              Lex->type|= NOT_NULL_FLAG;
	      $$=FIELD_TYPE_TIMESTAMP;
            }
	   }
	| DATETIME			{ $$=FIELD_TYPE_DATETIME; }
	| TINYBLOB			{ Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_TINY_BLOB; }
	| BLOB_SYM opt_len		{ Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_BLOB; }
	| spatial_type
          {
#ifdef HAVE_SPATIAL
            Lex->charset=&my_charset_bin;
            Lex->uint_geom_type= (uint)$1;
            $$=FIELD_TYPE_GEOMETRY;
#else
            my_error(ER_FEATURE_DISABLED, MYF(0)
                     sym_group_geom.name, sym_group_geom.needed_define);
            YYABORT;
#endif
          }
	| MEDIUMBLOB			{ Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_MEDIUM_BLOB; }
	| LONGBLOB			{ Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_LONG_BLOB; }
	| LONG_SYM VARBINARY		{ Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_MEDIUM_BLOB; }
	| LONG_SYM varchar opt_binary	{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| TINYTEXT opt_binary		{ $$=FIELD_TYPE_TINY_BLOB; }
	| TEXT_SYM opt_len opt_binary	{ $$=FIELD_TYPE_BLOB; }
	| MEDIUMTEXT opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| LONGTEXT opt_binary		{ $$=FIELD_TYPE_LONG_BLOB; }
	| DECIMAL_SYM float_options field_options
					{ $$=FIELD_TYPE_DECIMAL;}
	| NUMERIC_SYM float_options field_options
					{ $$=FIELD_TYPE_DECIMAL;}
	| FIXED_SYM float_options field_options
					{ $$=FIELD_TYPE_DECIMAL;}
	| ENUM {Lex->interval_list.empty();} '(' string_list ')' opt_binary
	  { $$=FIELD_TYPE_ENUM; }
	| SET { Lex->interval_list.empty();} '(' string_list ')' opt_binary
	  { $$=FIELD_TYPE_SET; }
	| LONG_SYM opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| SERIAL_SYM
	  {
	    $$=FIELD_TYPE_LONGLONG;
	    Lex->type|= (AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNSIGNED_FLAG |
		         UNIQUE_FLAG);
	  }
	;

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; }
	;

char:
	CHAR_SYM {}
	;

nchar:
	NCHAR_SYM {}
	| NATIONAL_SYM CHAR_SYM {}
	;

varchar:
	char VARYING {}
	| VARCHAR {}
	;

nvarchar:
	NATIONAL_SYM VARCHAR {}
	| NVARCHAR_SYM {}
	| NCHAR_SYM VARCHAR {}
	| NATIONAL_SYM CHAR_SYM VARYING {}
	| NCHAR_SYM VARYING {}
	;

int_type:
	INT_SYM		{ $$=FIELD_TYPE_LONG; }
	| TINYINT	{ $$=FIELD_TYPE_TINY; }
	| SMALLINT	{ $$=FIELD_TYPE_SHORT; }
	| MEDIUMINT	{ $$=FIELD_TYPE_INT24; }
	| BIGINT	{ $$=FIELD_TYPE_LONGLONG; };

real_type:
	REAL		{ $$= YYTHD->variables.sql_mode & MODE_REAL_AS_FLOAT ?
			      FIELD_TYPE_FLOAT : FIELD_TYPE_DOUBLE; }
	| DOUBLE_SYM	{ $$=FIELD_TYPE_DOUBLE; }
	| DOUBLE_SYM PRECISION { $$=FIELD_TYPE_DOUBLE; };


float_options:
	/* empty */		{}
	| '(' NUM ')'		{ Lex->length=$2.str; }
	| precision		{};

precision:
	'(' NUM ',' NUM ')'
	{
	  LEX *lex=Lex;
	  lex->length=$2.str; lex->dec=$4.str;
	};

field_options:
	/* empty */		{}
	| field_opt_list	{};

field_opt_list:
	field_opt_list field_option {}
	| field_option {};

field_option:
	SIGNED_SYM	{}
	| UNSIGNED	{ Lex->type|= UNSIGNED_FLAG;}
	| ZEROFILL	{ Lex->type|= UNSIGNED_FLAG | ZEROFILL_FLAG; };

opt_len:
	/* empty */	{ Lex->length=(char*) 0; } /* use default length */
	| '(' NUM ')'	{ Lex->length= $2.str; };

opt_precision:
	/* empty */	{}
	| precision	{};

opt_attribute:
	/* empty */ {}
	| opt_attribute_list {};

opt_attribute_list:
	opt_attribute_list attribute {}
	| attribute;

attribute:
	NULL_SYM	  { Lex->type&= ~ NOT_NULL_FLAG; }
	| not NULL_SYM	  { Lex->type|= NOT_NULL_FLAG; }
	| 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(); }
	| AUTO_INC	  { Lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG; }
	| SERIAL_SYM DEFAULT VALUE_SYM
	  { 
	    LEX *lex=Lex;
	    lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNIQUE_FLAG; 
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
	  }
	| opt_primary KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= PRI_KEY_FLAG | NOT_NULL_FLAG; 
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
	  }
	| UNIQUE_SYM	  
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_FLAG; 
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
	  }
	| UNIQUE_SYM KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_KEY_FLAG; 
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
	  }
	| COMMENT_SYM TEXT_STRING_sys { Lex->comment= &$2; }
	| BINARY { Lex->type|= BINCMP_FLAG; }
	| COLLATE_SYM collation_name
	  {
	    if (Lex->charset && !my_charset_same(Lex->charset,$2))
	    {
	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $2->name,Lex->charset->csname);
	      YYABORT;
	    }
	    else
	    {
	      Lex->charset=$2;
	    }
	  }
	;

now_or_signed_literal:
        NOW_SYM optional_braces { $$= new Item_func_now_local(); }
        | signed_literal { $$=$1; }
        ;

charset:
	CHAR_SYM SET	{}
	| CHARSET	{}
	;

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

charset_name_or_default:
	charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;


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)))
	  {
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
	    YYABORT;
	  }
	}
	| BINARY { $$= &my_charset_bin; }
	;

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

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

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

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

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

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

opt_primary:
	/* empty */
	| PRIMARY_SYM
	;

references:
	REFERENCES table_ident
	{
	  LEX *lex=Lex;
	  lex->fk_delete_opt= lex->fk_update_opt= lex->fk_match_option= 0;
	  lex->ref_list.empty();
	}
	opt_ref_list
	{
	  $$=$2;
	};

opt_ref_list:
	/* empty */ opt_on_delete {}
	| '(' ref_list ')' opt_on_delete {};

ref_list:
	ref_list ',' ident	{ Lex->ref_list.push_back(new key_part_spec($3.str)); }
	| ident			{ Lex->ref_list.push_back(new key_part_spec($1.str)); };


opt_on_delete:
	/* empty */ {}
	| opt_on_delete_list {};

opt_on_delete_list:
	opt_on_delete_list opt_on_delete_item {}
	| opt_on_delete_item {};

opt_on_delete_item:
	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; }
	| MATCH SIMPLE_SYM { Lex->fk_match_option= foreign_key::FK_MATCH_SIMPLE; };

delete_option:
	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; }
	| SET DEFAULT    { $$= (int) foreign_key::FK_OPTION_DEFAULT;  };

key_type:
	key_or_index			    { $$= Key::MULTIPLE; }
	| FULLTEXT_SYM opt_key_or_index	    { $$= Key::FULLTEXT; }
	| SPATIAL_SYM opt_key_or_index
	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
	    YYABORT;
#endif
	  };

constraint_key_type:
	PRIMARY_SYM KEY_SYM  { $$= Key::PRIMARY; }
	| UNIQUE_SYM opt_key_or_index { $$= Key::UNIQUE; };

key_or_index:
	KEY_SYM {}
	| INDEX_SYM {};

opt_key_or_index:
	/* empty */ {}
	| key_or_index
	;

keys_or_index:
	KEYS {}
	| INDEX_SYM {}
	| INDEXES {};

opt_unique_or_fulltext:
	/* empty */	{ $$= Key::MULTIPLE; }
	| UNIQUE_SYM	{ $$= Key::UNIQUE; }
	| FULLTEXT_SYM	{ $$= Key::FULLTEXT;}
	| SPATIAL_SYM
	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
	    my_message(ER_FEATURE_DISABLED, ER(ER_FEATURE_DISABLED), MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
	    YYABORT;
#endif
	  }
        ;

key_alg:
	/* empty */		   { $$= HA_KEY_ALG_UNDEF; }
	| USING opt_btree_or_rtree { $$= $2; }
	| TYPE_SYM opt_btree_or_rtree  { $$= $2; };

opt_btree_or_rtree:
	BTREE_SYM	{ $$= HA_KEY_ALG_BTREE; }
	| RTREE_SYM
	  {
	    $$= HA_KEY_ALG_RTREE;
	  }
	| HASH_SYM	{ $$= HA_KEY_ALG_HASH; };

key_list:
	key_list ',' key_part order_dir { Lex->col_list.push_back($3); }
	| key_part order_dir		{ Lex->col_list.push_back($1); };

key_part:
	ident			{ $$=new key_part_spec($1.str); }
	| ident '(' NUM ')'	
        {
          int key_part_len= atoi($3.str);
          if (!key_part_len)
          {
            my_error(ER_KEY_PART_0, MYF(0), $1.str);
          }
          $$=new key_part_spec($1.str,(uint) key_part_len);
        };

opt_ident:
	/* empty */	{ $$=(char*) 0; }	/* Defaultlength */
	| field_ident	{ $$=$1.str; };

opt_component:
	/* empty */	 { $$.str= 0; $$.length= 0; }
	| '.' ident	 { $$=$2; };

string_list:
	text_string			{ Lex->interval_list.push_back($1); }
	| string_list ',' text_string	{ Lex->interval_list.push_back($3); };

/*
** Alter table
*/

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

	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    THD *thd= YYTHD;
	    LEX *lex=Lex;

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

	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    THD *thd= YYTHD;
	    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
	  {}
	;

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

alter_list:
	| DISCARD TABLESPACE { Lex->alter_info.tablespace_op= DISCARD_TABLESPACE; }
	| IMPORT TABLESPACE { Lex->alter_info.tablespace_op= IMPORT_TABLESPACE; }
        | alter_list_item
	| alter_list ',' alter_list_item;

add_column:
	ADD opt_column
	{
	  LEX *lex=Lex;
	  lex->change=0;
	  lex->alter_info.flags|= ALTER_ADD_COLUMN;
	};

alter_list_item:
	add_column column_def opt_place { }
	| ADD key_def
	  {
	    Lex->alter_info.flags|= ALTER_ADD_INDEX;
	  }
	| add_column '(' field_list ')'
          {
	    Lex->alter_info.flags|= ALTER_ADD_COLUMN | ALTER_ADD_INDEX;
          }
	| CHANGE opt_column field_ident
	  {
	     LEX *lex=Lex;
	     lex->change= $3.str;
	     lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
	  }
          field_spec opt_place
        | MODIFY_SYM opt_column field_ident
          {
            LEX *lex=Lex;
            lex->length=lex->dec=0; lex->type=0;
            lex->default_value= lex->on_update_value= 0;
	    lex->comment=0;
	    lex->charset= NULL;
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
          }
          type opt_attribute
          {
            LEX *lex=Lex;
            if (add_field_to_list(lex->thd,$3.str,
                                  (enum enum_field_types) $5,
                                  lex->length,lex->dec,lex->type,
                                  lex->default_value, lex->on_update_value,
                                  lex->comment,
				  $3.str, &lex->interval_list, lex->charset,
				  lex->uint_geom_type))
	       YYABORT;
          }
          opt_place
	| DROP opt_column field_ident opt_restrict
	  {
	    LEX *lex=Lex;
	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::COLUMN,
                                                               $3.str));
	    lex->alter_info.flags|= ALTER_DROP_COLUMN;
	  }
	| DROP FOREIGN KEY_SYM opt_ident
          {
	    Lex->alter_info.flags|= ALTER_DROP_INDEX;
          }
	| DROP PRIMARY_SYM KEY_SYM
	  {
	    LEX *lex=Lex;
	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
				               primary_key_name));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
	  }
	| DROP key_or_index field_ident
	  {
	    LEX *lex=Lex;
	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
					                       $3.str));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
	  }
	| 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;
          }
	| ALTER opt_column field_ident SET DEFAULT signed_literal
	  {
	    LEX *lex=Lex;
	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,$6));
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
	  }
	| ALTER opt_column field_ident DROP DEFAULT
	  {
	    LEX *lex=Lex;
	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,
                                                                  (Item*) 0));
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
	  }
	| RENAME opt_to table_ident
	  {
	    LEX *lex=Lex;
	    lex->select_lex.db=$3->db.str;
	    lex->name= $3->table.str;
            if (check_table_name($3->table.str,$3->table.length) ||
                $3->db.str && check_db_name($3->db.str))
            {
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3->table.str);
              YYABORT;
            }
	    lex->alter_info.flags|= ALTER_RENAME;
	  }
	| 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))
	    {
	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $5->name, $4->csname);
	      YYABORT;
	    }
	    LEX *lex= Lex;
	    lex->create_info.table_charset=
	      lex->create_info.default_table_charset= $5;
	    lex->create_info.used_fields|= (HA_CREATE_USED_CHARSET |
					    HA_CREATE_USED_DEFAULT_CHARSET);
	    lex->alter_info.flags|= ALTER_CONVERT;
	  }
        | create_table_options_space_separated
	  {
	    LEX *lex=Lex;
	    lex->alter_info.flags|= ALTER_OPTIONS;
	  }
	| order_clause
	  {
	    LEX *lex=Lex;
	    lex->alter_info.flags|= ALTER_ORDER;
	  };

opt_column:
	/* empty */	{}
	| COLUMN_SYM	{};

opt_ignore:
	/* empty */	{ Lex->ignore= 0;}
	| IGNORE_SYM	{ Lex->ignore= 1;}
	;

opt_restrict:
	/* empty */	{ Lex->drop_mode= DROP_DEFAULT; }
	| RESTRICT	{ Lex->drop_mode= DROP_RESTRICT; }
	| CASCADE	{ Lex->drop_mode= DROP_CASCADE; }
	;

opt_place:
	/* empty */	{}
	| AFTER_SYM ident { store_position_for_column($2.str); }
	| FIRST_SYM	  { store_position_for_column(first_keyword); };

opt_to:
	/* empty */	{}
	| TO_SYM	{}
	| EQ		{}
	| AS		{};

/*
  SLAVE START and SLAVE STOP are deprecated. We keep them for compatibility.
*/

slave:
	  START_SYM SLAVE slave_thread_opts
          {
	    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));
            /* If you change this code don't forget to update SLAVE START too */
          }
          slave_until
          {}
        | STOP_SYM SLAVE slave_thread_opts
          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_STOP;
	    lex->type = 0;
            /* If you change this code don't forget to update SLAVE STOP too */
          }
	| SLAVE START_SYM slave_thread_opts
         {
	   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));
          }
          slave_until
          {}
	| SLAVE STOP_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_STOP;
	   lex->type = 0;
         }
        ;


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

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

slave_thread_opts:
	{ Lex->slave_thd_opt= 0; }
	slave_thread_opt_list
        {}
	;

slave_thread_opt_list:
	slave_thread_opt
	| slave_thread_opt_list ',' slave_thread_opt
	;

slave_thread_opt:
	/*empty*/	{}
	| SQL_THREAD	{ Lex->slave_thd_opt|=SLAVE_SQL; }
	| RELAY_THREAD 	{ Lex->slave_thd_opt|=SLAVE_IO; }
	;

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)))
            {
               my_message(ER_BAD_SLAVE_UNTIL_COND,
                          ER(ER_BAD_SLAVE_UNTIL_COND), MYF(0));
               YYABORT;
            }

          }
	;

slave_until_opts:
       master_file_def
       | slave_until_opts ',' master_file_def ;


restore:
	RESTORE_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_RESTORE_TABLE;
	}
	table_list FROM TEXT_STRING_sys
        {
	  Lex->backup_dir = $6.str;
        };

backup:
	BACKUP_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_BACKUP_TABLE;
	}
	table_list TO_SYM TEXT_STRING_sys
        {
	  Lex->backup_dir = $6.str;
        };

checksum:
        CHECKSUM_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECKSUM;
	}
	table_list opt_checksum_type
        {}
	;

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

repair:
	REPAIR opt_no_write_to_binlog table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_REPAIR;
           lex->no_write_to_binlog= $2;
	   lex->check_opt.init();
	}
	table_list opt_mi_repair_type
	{}
	;

opt_mi_repair_type:
	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
	| mi_repair_types {};

mi_repair_types:
	mi_repair_type {}
	| mi_repair_type mi_repair_types {};

mi_repair_type:
	QUICK          { Lex->check_opt.flags|= T_QUICK; }
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
        | USE_FRM      { Lex->check_opt.sql_flags|= TT_USEFRM; };

analyze:
	ANALYZE_SYM opt_no_write_to_binlog table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_ANALYZE;
           lex->no_write_to_binlog= $2;
	   lex->check_opt.init();
	}
	table_list opt_mi_check_type
	{}
	;

check:
	CHECK_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECK;
	   lex->check_opt.init();
	}
	table_list opt_mi_check_type
	{}
	;

opt_mi_check_type:
	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
	| mi_check_types {};

mi_check_types:
	mi_check_type {}
	| mi_check_type mi_check_types {};

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; }
	| CHANGED  { Lex->check_opt.flags|= T_CHECK_ONLY_CHANGED; };

optimize:
	OPTIMIZE opt_no_write_to_binlog table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_OPTIMIZE;
           lex->no_write_to_binlog= $2;
	   lex->check_opt.init();
	}
	table_list opt_mi_check_type
	{}
	;

opt_no_write_to_binlog:
	/* empty */        { $$= 0; }
	| NO_WRITE_TO_BINLOG  { $$= 1; }
	| LOCAL_SYM  { $$= 1; }
	;

rename:
	RENAME table_or_tables
	{
	   Lex->sql_command=SQLCOM_RENAME_TABLE;
	}
	table_to_table_list
	{}
	| RENAME USER clear_privileges rename_list
          {
	    Lex->sql_command = SQLCOM_RENAME_USER;
          }
	;

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;
          }
        ;

table_to_table_list:
	table_to_table
	| table_to_table_list ',' table_to_table;

table_to_table:
	table_ident TO_SYM table_ident
	{
	  LEX *lex=Lex;
	  SELECT_LEX *sl= lex->current_select;
	  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))
	    YYABORT;
	};

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

keycache_list:
        assign_to_keycache
        | keycache_list ',' assign_to_keycache;

assign_to_keycache:
        table_ident cache_keys_spec
        {
          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(),
                                      (List<String> *)0))
            YYABORT;
        }
        ;

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

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

preload_list:
	preload_keys
	| preload_list ',' preload_keys;

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

cache_keys_spec:
        { Select->interval_list.empty(); }
        cache_key_list_or_empty
        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          sel->use_index= sel->interval_list;
        }
        ;

cache_key_list_or_empty:
	/* empty */	{ Lex->select_lex.use_index_ptr= 0; }
	| opt_key_or_index '(' key_usage_list2 ')'
	  {
            SELECT_LEX *sel= &Lex->select_lex;
	    sel->use_index_ptr= &sel->use_index;
	  }
	;

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

/*
  Select : retrieve data from table
*/


select:
	select_init
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_SELECT;
	  lex->select_lex.resolve_mode= SELECT_LEX::SELECT_MODE;
	}
	;

/* Need select_init2 for subselects. */
select_init:
	SELECT_SYM select_init2
	|
	'(' SELECT_SYM select_part2 ')'
	  {
	    LEX *lex= Lex;
            SELECT_LEX * sel= lex->current_select;
	    if (sel->set_braces(1))
	    {
	      yyerror(ER(ER_SYNTAX_ERROR));
	      YYABORT;
	    }
	  if (sel->linkage == UNION_TYPE &&
	      !sel->master_unit()->first_select()->braces)
	  {
	    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;
          } union_opt;

select_init2:
	select_part2
        {
	  LEX *lex= Lex;
          SELECT_LEX * sel= lex->current_select;
          if (lex->current_select->set_braces(0))
	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
	  }
	  if (sel->linkage == UNION_TYPE &&
	      sel->master_unit()->first_select()->braces)
	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
	  }
	}
	union_clause
	;

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

select_into:
	opt_limit_clause {}
        | into
	| select_from
	| into select_from
	| select_from into;

select_from:
	  FROM join_table_list where_clause group_clause having_clause
	       opt_order_clause opt_limit_clause procedure_clause
        | 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 :) */
	;

select_options:
	/* empty*/
	| select_option_list;

select_option_list:
	select_option_list select_option
	| select_option;

select_option:
	STRAIGHT_JOIN { Select->options|= SELECT_STRAIGHT_JOIN; }
	| HIGH_PRIORITY
	  {
	    if (check_simple_select())
	      YYABORT;
	    Lex->lock_option= TL_READ_HIGH_PRIORITY;
	  }
	| DISTINCT	{ Select->options|= SELECT_DISTINCT; }
	| SQL_SMALL_RESULT { Select->options|= SELECT_SMALL_RESULT; }
	| SQL_BIG_RESULT { Select->options|= SELECT_BIG_RESULT; }
	| 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;
	  }
	| SQL_NO_CACHE_SYM { Lex->safe_to_cache_query=0; }
	| SQL_CACHE_SYM
	  {
	    Lex->select_lex.options|= OPTION_TO_QUERY_CACHE;
	  }
	| ALL		{}
	;

select_lock_type:
	/* empty */
	| FOR_SYM UPDATE_SYM
	  {
	    LEX *lex=Lex;
	    lex->current_select->set_lock_for_tables(TL_WRITE);
	    lex->safe_to_cache_query=0;
	  }
	| LOCK_SYM IN_SYM SHARE_SYM MODE_SYM
	  {
	    LEX *lex=Lex;
	    lex->current_select->
	      set_lock_for_tables(TL_READ_WITH_SHARED_LOCKS);
	    lex->safe_to_cache_query=0;
	  }
	;

select_item_list:
	  select_item_list ',' select_item
	| select_item
	| '*'
	  {
	    THD *thd= YYTHD;
	    if (add_item_to_list(thd, new Item_field(NULL, NULL, "*")))
	      YYABORT;
	    (thd->lex->current_select->with_wild)++;
	  };


select_item:
	  remember_name select_item2 remember_end select_alias
	  {
	    if (add_item_to_list(YYTHD, $2))
	      YYABORT;
	    if ($4.str)
	      $2->set_name($4.str,$4.length,system_charset_info);
	    else if (!$2->name) {
	      char *str = $1;
	      if (str[-1] == '`')
	        str--;
	      $2->set_name(str,(uint) ($3 - str), YYTHD->charset());
	    }
	  };

remember_name:
	{ $$=(char*) Lex->tok_start; };

remember_end:
	{ $$=(char*) Lex->tok_end; };

select_item2:
	table_wild	{ $$=$1; } /* table.* */
	| expr		{ $$=$1; };

select_alias:
	/* empty */		{ $$.str=0;}
	| AS ident		{ $$=$2; }
	| AS TEXT_STRING_sys	{ $$=$2; }
	| ident			{ $$=$1; }
	| TEXT_STRING_sys	{ $$=$1; }
	;

optional_braces:
	/* empty */ {}
	| '(' ')' {};

/* all possible expressions */
expr:	
	expr or bool_term	{ $$= new Item_cond_or($1,$3); }
	| expr XOR bool_term	{ $$= new Item_cond_xor($1,$3); }
	| bool_term ;

bool_term:
	bool_term and bool_factor { $$= new Item_cond_and($1,$3); }
	| bool_factor ;

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); }
	| 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); }
	| predicate ;

predicate:
	bit_expr IN_SYM '(' expr_list ')'
	  { $4->push_front($1); $$= new Item_func_in(*$4); }
	| bit_expr not IN_SYM '(' expr_list ')'
	  { $5->push_front($1); $$= negate_expression(YYTHD, new Item_func_in(*$5)); }
        | bit_expr IN_SYM in_subselect
	  { $$= new Item_in_subselect($1, $3); }
	| bit_expr not IN_SYM in_subselect
          { $$= negate_expression(YYTHD, new Item_in_subselect($1, $4)); }
	| 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)); }
	| 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
          { $$= negate_expression(YYTHD, new Item_func_regex($1,$4)); }
	| 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;

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; }
        ;

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

simple_expr:
	simple_ident
 	| simple_expr COLLATE_SYM ident_or_text %prec NEG
	  {
	    $$= new Item_func_set_collation($1,
					    new Item_string($3.str,
							    $3.length,
                                                            YYTHD->charset()));
	  }
	| literal
	| param_marker
	| '@' ident_or_text SET_VAR expr
	  {
	    $$= new Item_func_set_user_var($2,$4);
	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
	  }
	| '@' ident_or_text
	  {
	    $$= new Item_func_get_user_var($2);
	    LEX *lex= Lex;
	    lex->uncacheable(UNCACHEABLE_RAND);
	    lex->variables_used= 1;
	  }
	| '@' '@' opt_var_ident_type ident_or_text opt_component
	  {

            if ($4.str && $5.str && check_reserved_words(&$4))
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
	    if (!($$= get_system_var(YYTHD, (enum_var_type) $3, $4, $5)))
	      YYABORT;
	    Lex->variables_used= 1;
	  }
	| sum_expr
	| simple_expr OR_OR_SYM simple_expr
	  { $$= 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); }
	| '(' expr ')'		{ $$= $2; }
	| '(' expr ',' expr_list ')'
	  {
	    $4->push_front($2);
	    $$= new Item_row(*$4);
	  }
	| ROW_SYM '(' expr ',' expr_list ')'
	  {
	    $5->push_front($3);
	    $$= new Item_row(*$5);
	  }
	| EXISTS exists_subselect { $$= $2; }
	| singlerow_subselect   { $$= $1; }
	| '{' ident expr '}'	{ $$= $3; }
        | MATCH ident_list_arg AGAINST '(' bit_expr fulltext_options ')'
          { $2->push_front($5);
            Select->add_ftfunc_to_list((Item_func_match*)
                                        ($$=new Item_func_match(*$2,$6))); }
	| ASCII_SYM '(' expr ')' { $$= new Item_func_ascii($3); }
	| BINARY simple_expr %prec NEG
	  {
	    $$= create_func_cast($2, ITEM_CAST_CHAR, -1, &my_charset_bin);
	  }
	| CAST_SYM '(' expr AS cast_type ')'
	  {
	    $$= create_func_cast($3, $5,
				 Lex->length ? atoi(Lex->length) : -1,
				 Lex->charset);
	  }
	| CASE_SYM opt_expr WHEN_SYM when_list opt_else END
	  { $$= new Item_func_case(* $4, $2, $5 ); }
	| CONVERT_SYM '(' expr ',' cast_type ')'
	  {
	    $$= create_func_cast($3, $5,
				 Lex->length ? atoi(Lex->length) : -1,
				 Lex->charset);
	  }
	| CONVERT_SYM '(' expr USING charset_name ')'
	  { $$= new Item_func_conv_charset($3,$5); }
	| DEFAULT '(' simple_ident ')'
	  { $$= new Item_default_value($3); }
	| VALUES '(' simple_ident ')'
	  { $$= new Item_insert_value($3); }
	| FUNC_ARG0 '(' ')'
	  {
	    if (!$1.symbol->create_func)
	    {
              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((Item*(*)(void))($1.symbol->create_func))();
	  }
	| FUNC_ARG1 '(' expr ')'
	  {
	    if (!$1.symbol->create_func)
	    {
              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*))($1.symbol->create_func))($3);
	  }
	| FUNC_ARG2 '(' expr ',' expr ')'
	  {
	    if (!$1.symbol->create_func)
	    {
	      my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*))($1.symbol->create_func))($3,$5);
	  }
	| FUNC_ARG3 '(' expr ',' expr ',' expr ')'
	  {
	    if (!$1.symbol->create_func)
	    {
              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
	      YYABORT;
	    }
	    $$= ((Item*(*)(Item*,Item*,Item*))($1.symbol->create_func))($3,$5,$7);
	  }
	| ADDDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 0);}
	| ADDDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 0); }
	| REPEAT_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_repeat($3,$5); }
	| ATAN	'(' expr ')'
	  { $$= new Item_func_atan($3); }
	| ATAN	'(' expr ',' expr ')'
	  { $$= new Item_func_atan($3,$5); }
	| CHAR_SYM '(' expr_list ')'
	  { $$= new Item_func_char(*$3); }
	| CHARSET '(' expr ')'
	  { $$= new Item_func_charset($3); }
	| COALESCE '(' expr_list ')'
	  { $$= new Item_func_coalesce(* $3); }
	| COLLATION_SYM '(' expr ')'
	  { $$= new Item_func_collation($3); }
	| CONCAT '(' expr_list ')'
	  { $$= new Item_func_concat(* $3); }
	| CONCAT_WS '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_concat_ws(*$5); }
	| CONTAINS_SYM '(' expr ',' expr ')'
	  { $$= create_func_contains($3, $5); }
	| CONVERT_TZ_SYM '(' expr ',' expr ',' expr ')'
	  {
            if (Lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
	    $$= new Item_func_convert_tz($3, $5, $7);
	  }
	| CURDATE optional_braces
	  { $$= new Item_func_curdate_local(); Lex->safe_to_cache_query=0; }
	| CURTIME optional_braces
	  { $$= new Item_func_curtime_local(); Lex->safe_to_cache_query=0; }
	| CURTIME '(' expr ')'
	  {
	    $$= new Item_func_curtime_local($3);
	    Lex->safe_to_cache_query=0;
	  }
	| CURRENT_USER optional_braces
          { $$= create_func_current_user(); }
	| 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); }
	| DATABASE '(' ')'
	  {
	    $$= new Item_func_database();
            Lex->safe_to_cache_query=0;
	  }
	| DATE_SYM '(' expr ')'
	  { $$= new Item_date_typecast($3); }
	| DAY_SYM '(' expr ')'
	  { $$= new Item_func_dayofmonth($3); }
	| ELT_FUNC '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_elt(*$5); }
	| MAKE_SET_SYM '(' expr ',' expr_list ')'
	  { $$= new Item_func_make_set($3, *$5); }
	| ENCRYPT '(' expr ')'
	  {
	    $$= new Item_func_encrypt($3);
	    Lex->uncacheable(UNCACHEABLE_RAND);
	  }
	| ENCRYPT '(' expr ',' expr ')'   { $$= new Item_func_encrypt($3,$5); }
	| DECODE_SYM '(' expr ',' TEXT_STRING_literal ')'
	  { $$= new Item_func_decode($3,$5.str); }
	| ENCODE_SYM '(' expr ',' TEXT_STRING_literal ')'
	 { $$= new Item_func_encode($3,$5.str); }
	| DES_DECRYPT_SYM '(' expr ')'
        { $$= new Item_func_des_decrypt($3); }
	| DES_DECRYPT_SYM '(' expr ',' expr ')'
        { $$= new Item_func_des_decrypt($3,$5); }
	| DES_ENCRYPT_SYM '(' expr ')'
        { $$= new Item_func_des_encrypt($3); }
	| DES_ENCRYPT_SYM '(' expr ',' expr ')'
        { $$= new Item_func_des_encrypt($3,$5); }
	| EXPORT_SET '(' expr ',' expr ',' expr ')'
		{ $$= 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); }
	| FALSE_SYM
	  { $$= new Item_int((char*) "FALSE",0,1); }
	| FORMAT_SYM '(' expr ',' NUM ')'
	  { $$= new Item_func_format($3,atoi($5.str)); }
	| FROM_UNIXTIME '(' expr ')'
	  { $$= new Item_func_from_unixtime($3); }
	| FROM_UNIXTIME '(' expr ',' expr ')'
	  {
	    $$= new Item_func_date_format (new Item_func_from_unixtime($3),$5,0);
	  }
	| FIELD_FUNC '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_field(*$5); }
	| geometry_function
	  {
#ifdef HAVE_SPATIAL
	    $$= $1;
#else
	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
	    YYABORT;
#endif
	  }
	| GET_FORMAT '(' date_time_type  ',' expr ')'
	  { $$= new Item_func_get_format($3, $5); }
	| HOUR_SYM '(' expr ')'
	  { $$= 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); }
	| interval_expr interval '+' expr
	  /* we cannot put interval before - */
	  { $$= new Item_date_add_interval($4,$1,$2,0); }
	| interval_expr
	  {
            if ($1->type() != Item::ROW_ITEM)
            {
              yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
            $$= new Item_func_interval((Item_row *)$1);
          }
	| LAST_INSERT_ID '(' ')'
	  {
	    $$= new Item_func_last_insert_id();
	    Lex->safe_to_cache_query= 0;
	  }
	| LAST_INSERT_ID '(' expr ')'
	  {
	    $$= new Item_func_last_insert_id($3);
	    Lex->safe_to_cache_query= 0;
	  }
	| LEFT '(' expr ',' expr ')'
	  { $$= new Item_func_left($3,$5); }
	| LOCATE '(' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3); }
	| LOCATE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3,$7); }
	| GREATEST_SYM '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_max(*$5); }
	| LEAST_SYM '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_min(*$5); }
	| LOG_SYM '(' expr ')'
	  { $$= new Item_func_log($3); }
	| LOG_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_log($3, $5); }
	| MASTER_POS_WAIT '(' expr ',' expr ')'
	  {
	    $$= new Item_master_pos_wait($3, $5);
	    Lex->safe_to_cache_query=0;
		  }
	| MASTER_POS_WAIT '(' expr ',' expr ',' expr ')'
	  {
	    $$= new Item_master_pos_wait($3, $5, $7);
	    Lex->safe_to_cache_query=0;
	  }
	| MICROSECOND_SYM '(' expr ')'
	  { $$= new Item_func_microsecond($3); }
	| MINUTE_SYM '(' expr ')'
	  { $$= new Item_func_minute($3); }
	| MOD_SYM '(' expr ',' expr ')'
	  { $$ = new Item_func_mod( $3, $5); }
	| MONTH_SYM '(' expr ')'
	  { $$= new Item_func_month($3); }
	| NOW_SYM optional_braces
	  { $$= new Item_func_now_local(); Lex->safe_to_cache_query=0;}
	| NOW_SYM '(' expr ')'
	  { $$= new Item_func_now_local($3); Lex->safe_to_cache_query=0;}
	| PASSWORD '(' expr ')'
	  {
	    $$= YYTHD->variables.old_passwords ?
              (Item *) new Item_func_old_password($3) :
	      (Item *) new Item_func_password($3);
	  }
	| OLD_PASSWORD '(' expr ')'
	  { $$=  new Item_func_old_password($3); }
	| POSITION_SYM '(' bit_expr IN_SYM expr ')'
	  { $$ = new Item_func_locate($5,$3); }
	| QUARTER_SYM '(' expr ')'
	  { $$ = new Item_func_quarter($3); }
	| RAND '(' expr ')'
	  { $$= new Item_func_rand($3); Lex->uncacheable(UNCACHEABLE_RAND);}
	| RAND '(' ')'
	  { $$= new Item_func_rand(); Lex->uncacheable(UNCACHEABLE_RAND);}
	| REPLACE '(' expr ',' expr ',' expr ')'
	  { $$= 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 ')' { $$= new Item_func_round($3,$5,0); }
	| ROW_COUNT_SYM '(' ')'
	  {
	    $$= new Item_func_row_count();
	    Lex->safe_to_cache_query= 0;
	  }
	| 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); }
	| 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); }
	| TIME_SYM '(' expr ')'
	  { $$= new Item_time_typecast($3); }
	| TIMESTAMP '(' expr ')'
	  { $$= new Item_datetime_typecast($3); }
	| TIMESTAMP '(' expr ',' expr ')'
	  { $$= new Item_func_add_time($3, $5, 1, 0); }
	| TIMESTAMP_ADD '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_date_add_interval($7,$5,$3,0); }
	| TIMESTAMP_DIFF '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_func_timestamp_diff($5,$7,$3); }
	| TRIM '(' expr ')'
	  { $$= new Item_func_trim($3); }
	| TRIM '(' LEADING expr FROM expr ')'
	  { $$= new Item_func_ltrim($6,$4); }
	| TRIM '(' TRAILING expr FROM expr ')'
	  { $$= new Item_func_rtrim($6,$4); }
	| TRIM '(' BOTH expr FROM expr ')'
	  { $$= new Item_func_trim($6,$4); }
	| TRIM '(' LEADING FROM expr ')'
	 { $$= new Item_func_ltrim($5); }
	| TRIM '(' TRAILING FROM expr ')'
	  { $$= new Item_func_rtrim($5); }
	| TRIM '(' BOTH FROM expr ')'
	  { $$= new Item_func_trim($5); }
	| TRIM '(' expr FROM expr ')'
	  { $$= new Item_func_trim($5,$3); }
	| TRUNCATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_round($3,$5,1); }
	| TRUE_SYM
	  { $$= new Item_int((char*) "TRUE",1,1); }
	| ident '.' ident '(' udf_expr_list ')'
	  {
	    LEX *lex= Lex;
	    sp_name *name= new sp_name($1, $3);

	    name->init_qname(YYTHD);
	    sp_add_fun_to_lex(Lex, name);
	    if ($5)
	      $$= new Item_func_sp(name, *$5);
	    else
	      $$= new Item_func_sp(name);
	  }
	| 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;
              default:
                YYABORT;
              }
            }
            else
#endif /* HAVE_DLOPEN */
            {
              sp_name *name= sp_name_current_db_new(YYTHD, $1);

              sp_add_fun_to_lex(Lex, name);
              if ($3)
                $$= new Item_func_sp(name, *$3);
              else
                $$= new Item_func_sp(name);
	    }
          }
	| UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' expr_list ')'
	  {
            $$= new Item_func_unique_users($3,atoi($5.str),atoi($7.str), * $9);
	  }
	| UNIX_TIMESTAMP '(' ')'
	  {
	    $$= new Item_func_unix_timestamp();
	    Lex->safe_to_cache_query=0;
	  }
	| UNIX_TIMESTAMP '(' expr ')'
	  { $$= new Item_func_unix_timestamp($3); }
	| USER '(' ')'
	  { $$= new Item_func_user(); Lex->safe_to_cache_query=0; }
	| 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
	  { $$= new Item_func_now_utc(); Lex->safe_to_cache_query=0;}
	| WEEK_SYM '(' expr ')'
	  {
            $$= new Item_func_week($3,new Item_int((char*) "0",
				   YYTHD->variables.default_week_format,1));
          }
	| 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); }
	| BENCHMARK_SYM '(' ULONG_NUM ',' expr ')'
	  {
	    $$=new Item_func_benchmark($3,$5);
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
	  }
	| EXTRACT_SYM '(' interval FROM expr ')'
	{ $$=new Item_extract( $3, $5); };

geometry_function:
	GEOMFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMFROMTEXT '(' expr ',' expr ')'
	  { $$= 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 ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
                           Geometry::wkb_geometrycollection,
                           Geometry::wkb_point)); }
	| LINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
                  Geometry::wkb_linestring, Geometry::wkb_point)); }
 	| MULTILINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW( Item_func_spatial_collection(* $3,
                   Geometry::wkb_multilinestring, Geometry::wkb_linestring)); }
 	| MLINEFROMTEXT '(' expr ')'
	  { $$= 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,
                  Geometry::wkb_multipoint, Geometry::wkb_point)); }
 	| MULTIPOLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
                  Geometry::wkb_multipolygon, Geometry::wkb_polygon)); }
	| POINT_SYM '(' expr ',' expr ')'
	  { $$= 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 ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
	          Geometry::wkb_polygon, Geometry::wkb_linestring)); }
 	| GEOMCOLLFROMTEXT '(' expr ')'
	  { $$= 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)); }
	;

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

udf_expr_list:
	/* 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;
	}
	;

sum_expr:
	AVG_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_avg($3); }
	| BIT_AND  '(' in_sum_expr ')'
	  { $$=new Item_sum_and($3); }
	| BIT_OR  '(' in_sum_expr ')'
	  { $$=new Item_sum_or($3); }
	| BIT_XOR  '(' in_sum_expr ')'
	  { $$=new Item_sum_xor($3); }
	| COUNT_SYM '(' opt_all '*' ')'
	  { $$=new Item_sum_count(new Item_int((int32) 0L,1)); }
	| COUNT_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_count($3); }
	| COUNT_SYM '(' DISTINCT
	  { Select->in_sum_expr++; }
	   expr_list
	  { Select->in_sum_expr--; }
	  ')'
	  { $$=new Item_sum_count_distinct(* $5); }
	| GROUP_UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' in_sum_expr ')'
	  { $$= new Item_sum_unique_users($3,atoi($5.str),atoi($7.str),$9); }
	| MIN_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_min($3); }
/*
   According to ANSI SQL, DISTINCT is allowed and has
   no sence inside MIN and MAX grouping functions; so MIN|MAX(DISTINCT ...)
   is processed like an ordinary MIN | MAX()
 */
	| MIN_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_min($4); }
	| MAX_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_max($3); }
	| MAX_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_max($4); }
	| STD_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_std($3); }
	| VARIANCE_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_variance($3); }
	| SUM_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_sum($3); }
	| SUM_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_sum_distinct($4); }
	| GROUP_CONCAT_SYM '(' opt_distinct
	  { Select->in_sum_expr++; }
	  expr_list opt_gorder_clause
	  opt_gconcat_separator
	 ')'
	  {
	    Select->in_sum_expr--;
	    $$=new Item_func_group_concat($3,$5,Select->gorder_list,$7);
	    $5->empty();
	  };

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

opt_gconcat_separator:
    /* empty */        { $$ = new (YYTHD->mem_root) String(",",1,default_charset_info); }
    |SEPARATOR_SYM text_string  { $$ = $2; };


opt_gorder_clause:
	  /* empty */
	  {
            Select->gorder_list = NULL;
	  }
	| order_clause
          {
            SELECT_LEX *select= Select;
            select->gorder_list=
	      (SQL_LIST*) sql_memdup((char*) &select->order_list,
				     sizeof(st_sql_list));
	    select->order_list.empty();
	  };


in_sum_expr:
	opt_all
	{
	  LEX *lex= Lex;
	  if (lex->current_select->inc_in_sum_expr())
	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
	  }
	}
	expr
	{
	  Select->in_sum_expr--;
	  $$= $3;
	};

cast_type:
	BINARY opt_len		{ $$=ITEM_CAST_CHAR; Lex->charset= &my_charset_bin; }
	| CHAR_SYM opt_len opt_binary	{ $$=ITEM_CAST_CHAR; }
	| NCHAR_SYM opt_len	{ $$=ITEM_CAST_CHAR; Lex->charset= national_charset_info; }
	| SIGNED_SYM		{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| SIGNED_SYM INT_SYM	{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| UNSIGNED		{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| UNSIGNED INT_SYM	{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->length= (char*)0; }
	| DATE_SYM		{ $$=ITEM_CAST_DATE; Lex->charset= NULL; Lex->length= (char*)0; }
	| TIME_SYM		{ $$=ITEM_CAST_TIME; Lex->charset= NULL; Lex->length= (char*)0; }
	| DATETIME		{ $$=ITEM_CAST_DATETIME; Lex->charset= NULL; Lex->length= (char*)0; }
	;

expr_list:
	{ Select->expr_list.push_front(new List<Item>); }
	expr_list2
	{ $$= Select->expr_list.pop(); };

expr_list2:
	expr { Select->expr_list.head()->push_back($1); }
	| expr_list2 ',' expr { Select->expr_list.head()->push_back($3); };

ident_list_arg:
          ident_list          { $$= $1; }
        | '(' ident_list ')'  { $$= $2; };

ident_list:
        { Select->expr_list.push_front(new List<Item>); }
        ident_list2
        { $$= Select->expr_list.pop(); };

ident_list2:
        simple_ident { Select->expr_list.head()->push_back($1); }
        | ident_list2 ',' simple_ident { Select->expr_list.head()->push_back($3); };

opt_expr:
	/* empty */      { $$= NULL; }
	| expr           { $$= $1; };

opt_else:
	/* empty */    { $$= NULL; }
	| ELSE expr    { $$= $2; };

when_list:
        { Select->when_list.push_front(new List<Item>); }
	when_list2
	{ $$= Select->when_list.pop(); };

when_list2:
	expr THEN_SYM expr
	  {
	    SELECT_LEX *sel=Select;
	    sel->when_list.head()->push_back($1);
	    sel->when_list.head()->push_back($3);
	}
	| when_list2 WHEN_SYM expr THEN_SYM expr
	  {
	    SELECT_LEX *sel=Select;
	    sel->when_list.head()->push_back($3);
	    sel->when_list.head()->push_back($5);
	  };

table_ref:
        table_factor            { $$=$1; }
        | join_table            { $$=$1; }
          {
	    LEX *lex= Lex;
            if (!($$= lex->current_select->nest_last_join(lex->thd)))
              YYABORT;
          }
        ;

join_table_list:
        table_ref { $$=$1; }
        | join_table_list ',' table_ref { $$=$3; }
        ;

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

	| table_ref LEFT opt_outer JOIN_SYM table_ref ON expr
	  { add_join_on($5,$7); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
	| table_ref LEFT opt_outer JOIN_SYM table_factor
	  {
	    SELECT_LEX *sel= Select;
            sel->save_names_for_using_list($1, $5);
	  }
	  USING '(' using_list ')'
	  { add_join_on($5,$9); $5->outer_join|=JOIN_TYPE_LEFT; $$=$5; }
	| table_ref NATURAL LEFT opt_outer JOIN_SYM table_factor
	  {
	    add_join_natural($1,$6);
	    $6->outer_join|=JOIN_TYPE_LEFT;
	    $$=$6;
	  }
	| table_ref RIGHT opt_outer JOIN_SYM table_ref ON expr
          { 
	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
            add_join_on($$, $7);
          }
	| table_ref RIGHT opt_outer JOIN_SYM table_factor
	  {
	    SELECT_LEX *sel= Select;
            sel->save_names_for_using_list($1, $5);
	  }
	  USING '(' using_list ')'
          { 
	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
            add_join_on($$, $9);
          }
	| table_ref NATURAL RIGHT opt_outer JOIN_SYM table_factor
	  {
	    add_join_natural($6,$1);
	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
              YYABORT;
	  }
	| table_ref NATURAL JOIN_SYM table_factor
	  { add_join_natural($1,$4); $$=$4; };
        

normal_join:
	JOIN_SYM		{}
	| INNER_SYM JOIN_SYM	{}
	| CROSS JOIN_SYM	{}
	;

table_factor:
	{
	  SELECT_LEX *sel= Select;
	  sel->use_index_ptr=sel->ignore_index_ptr=0;
	  sel->table_join_options= 0;
	}
        table_ident opt_table_alias opt_key_definition
	{
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
	  if (!($$= sel->add_table_to_list(lex->thd, $2, $3,
					   sel->get_table_join_options(),
					   lex->lock_option,
					   sel->get_use_index(),
					   sel->get_ignore_index())))
	    YYABORT;
          sel->add_joined_table($$);
	}
        | '('
          {
            LEX *lex= Lex;
            if (lex->current_select->init_nested_join(lex->thd))
              YYABORT;
          }
          join_table_list ')'
          {
            LEX *lex= Lex;
            if (!($$= lex->current_select->end_nested_join(lex->thd)))
              YYABORT;
          }
	| '{' ident table_ref LEFT OUTER JOIN_SYM table_ref ON expr '}'
	  { add_join_on($7,$9); $7->outer_join|=JOIN_TYPE_LEFT; $$=$7; }
        | '(' SELECT_SYM select_derived ')' opt_table_alias
	{
	  LEX *lex=Lex;
	  SELECT_LEX_UNIT *unit= lex->current_select->master_unit();
	  lex->current_select= unit->outer_select();
	  if (!($$= lex->current_select->
                add_table_to_list(lex->thd, new Table_ident(unit), $5, 0,
				  TL_READ,(List<String> *)0,
	                          (List<String> *)0)))

	    YYABORT;
          lex->current_select->add_joined_table($$);           
	};

select_derived:
        {
	  LEX *lex= Lex;
	  lex->derived_tables|= DERIVED_SUBQUERY;
	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
	  {
	    yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
	  }
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE ||
              mysql_new_select(lex, 1))
	    YYABORT;
	  mysql_init_select(lex);
	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
	  lex->current_select->parsing_place= SELECT_LIST;
	}
        select_options select_item_list
	{
	  Select->parsing_place= NO_MATTER;
	}
	opt_select_from union_opt
        ;

opt_outer:
	/* empty */	{}
	| OUTER		{};

opt_key_definition:
	/* empty */	{}
	| USE_SYM    key_usage_list
          {
	    SELECT_LEX *sel= Select;
	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	  }
	| FORCE_SYM key_usage_list
          {
	    SELECT_LEX *sel= Select;
	    sel->use_index= *$2;
	    sel->use_index_ptr= &sel->use_index;
	    sel->table_join_options|= TL_OPTION_FORCE_INDEX;
	  }
	| IGNORE_SYM key_usage_list
	  {
	    SELECT_LEX *sel= Select;
	    sel->ignore_index= *$2;
	    sel->ignore_index_ptr= &sel->ignore_index;
	  };

key_usage_list:
	key_or_index { Select->interval_list.empty(); }
        '(' key_list_or_empty ')'
        { $$= &Select->interval_list; }
	;

key_list_or_empty:
	/* empty */ 		{}
	| key_usage_list2	{}
	;

key_usage_list2:
	key_usage_list2 ',' ident
        { Select->
	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $3.str, $3.length,
				    system_charset_info)); }
	| ident
        { Select->
	    interval_list.push_back(new (YYTHD->mem_root) String((const char*) $1.str, $1.length,
				    system_charset_info)); }
	| PRIMARY_SYM
        { Select->
	    interval_list.push_back(new (YYTHD->mem_root) String("PRIMARY", 7,
				    system_charset_info)); };

using_list:
	ident
	  {
	    SELECT_LEX *sel= Select;
	    if (!($$= new Item_func_eq(new Item_field(sel->db1, sel->table1,
						      $1.str),
				       new Item_field(sel->db2, sel->table2,
						      $1.str))))
	      YYABORT;
	  }
	| using_list ',' ident
	  {
	    SELECT_LEX *sel= Select;
	    if (!($$= 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)))
	      YYABORT;
	  };

interval:
	interval_time_st	{}
	| DAY_HOUR_SYM		{ $$=INTERVAL_DAY_HOUR; }
	| DAY_MICROSECOND_SYM	{ $$=INTERVAL_DAY_MICROSECOND; }
	| DAY_MINUTE_SYM	{ $$=INTERVAL_DAY_MINUTE; }
	| DAY_SECOND_SYM	{ $$=INTERVAL_DAY_SECOND; }
	| HOUR_MICROSECOND_SYM	{ $$=INTERVAL_HOUR_MICROSECOND; }
	| HOUR_MINUTE_SYM	{ $$=INTERVAL_HOUR_MINUTE; }
	| HOUR_SECOND_SYM	{ $$=INTERVAL_HOUR_SECOND; }
	| MICROSECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
	| MINUTE_MICROSECOND_SYM	{ $$=INTERVAL_MINUTE_MICROSECOND; }
	| MINUTE_SECOND_SYM	{ $$=INTERVAL_MINUTE_SECOND; }
	| 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; }
	| MINUTE_SYM		{ $$=INTERVAL_MINUTE; }
	| MONTH_SYM		{ $$=INTERVAL_MONTH; }
	| QUARTER_SYM		{ $$=INTERVAL_QUARTER; }
	| SECOND_SYM		{ $$=INTERVAL_SECOND; }
	| YEAR_SYM		{ $$=INTERVAL_YEAR; }
        ;

date_time_type:
          DATE_SYM              {$$=MYSQL_TIMESTAMP_DATE;}
        | TIME_SYM              {$$=MYSQL_TIMESTAMP_TIME;}
        | DATETIME              {$$=MYSQL_TIMESTAMP_DATETIME;}
        | TIMESTAMP             {$$=MYSQL_TIMESTAMP_DATETIME;}
        ;

table_alias:
	/* empty */
	| AS
	| EQ;

opt_table_alias:
	/* empty */		{ $$=0; }
	| table_alias ident
	  { $$= (LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING)); };

opt_all:
	/* empty */
	| ALL
	;

where_clause:
	/* empty */  { Select->where= 0; }
	| WHERE
          {
            Select->parsing_place= IN_WHERE;
          }
          expr
	  {
            SELECT_LEX *select= Select;
	    select->where= $3;
            select->parsing_place= NO_MATTER;
	    if ($3)
	      $3->top_level_item();
	  }
 	;

having_clause:
	/* empty */
	| HAVING
	  {
	    Select->parsing_place= IN_HAVING;
          }
	  expr
	  {
	    SELECT_LEX *sel= Select;
	    sel->having= $3;
	    sel->parsing_place= NO_MATTER;
	    if ($3)
	      $3->top_level_item();
	  }
	;

opt_escape:
	ESCAPE_SYM simple_expr { $$= $2; }
	| /* empty */
          {

            $$= ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ?
		 new Item_string("", 0, &my_charset_latin1) :
                 new Item_string("\\", 1, &my_charset_latin1));
          }
        ;


/*
   group by statement in select
*/

group_clause:
	/* empty */
	| GROUP BY group_list olap_opt;

group_list:
	group_list ',' order_ident order_dir
	  { if (add_group_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
	| order_ident order_dir
	  { if (add_group_to_list(YYTHD, $1,(bool) $2)) YYABORT; };

olap_opt:
	/* empty */ {}
	| WITH CUBE_SYM
          {
	    LEX *lex=Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
	      my_error(ER_WRONG_USAGE, MYF(0), "WITH CUBE",
		       "global union parameters");
	      YYABORT;
	    }
	    lex->current_select->olap= CUBE_TYPE;
	    my_error(ER_NOT_SUPPORTED_YET, MYF(0), "CUBE");
	    YYABORT;	/* To be deleted in 5.1 */
	  }
	| WITH ROLLUP_SYM
          {
	    LEX *lex= Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
	      my_error(ER_WRONG_USAGE, MYF(0), "WITH ROLLUP",
		       "global union parameters");
	      YYABORT;
	    }
	    lex->current_select->olap= ROLLUP_TYPE;
	  }
	;

/*
   Order by statement in select
*/

opt_order_clause:
	/* empty */
	| order_clause;

order_clause:
	ORDER_SYM BY
        {
	  LEX *lex=Lex;
	  if (lex->current_select->linkage != GLOBAL_OPTIONS_TYPE &&
	      lex->current_select->olap !=
	      UNSPECIFIED_OLAP_TYPE)
	  {
	    my_error(ER_WRONG_USAGE, MYF(0),
                     "CUBE/ROLLUP", "ORDER BY");
	    YYABORT;
	  }
	} order_list;

order_list:
	order_list ',' order_ident order_dir
	  { if (add_order_to_list(YYTHD, $3,(bool) $4)) YYABORT; }
	| order_ident order_dir
	  { if (add_order_to_list(YYTHD, $1,(bool) $2)) YYABORT; };

order_dir:
	/* empty */ { $$ =  1; }
	| ASC  { $$ =1; }
	| DESC { $$ =0; };


opt_limit_clause_init:
	/* empty */
	{
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
          sel->offset_limit= 0L;
          sel->select_limit= HA_POS_ERROR;
	}
	| limit_clause {}
	;

opt_limit_clause:
	/* empty */	{}
	| limit_clause	{}
	;

limit_clause:
	LIMIT limit_options {}
	;

limit_options:
	ULONG_NUM
	  {
            SELECT_LEX *sel= Select;
            sel->select_limit= $1;
            sel->offset_limit= 0L;
	    sel->explicit_limit= 1;
	  }
	| ULONG_NUM ',' ULONG_NUM
	  {
	    SELECT_LEX *sel= Select;
	    sel->select_limit= $3;
	    sel->offset_limit= $1;
	    sel->explicit_limit= 1;
	  }
	| ULONG_NUM OFFSET_SYM ULONG_NUM
	  {
	    SELECT_LEX *sel= Select;
	    sel->select_limit= $1;
	    sel->offset_limit= $3;
	    sel->explicit_limit= 1;
	  }
	;


delete_limit_clause:
	/* empty */
	{
	  LEX *lex=Lex;
	  lex->current_select->select_limit= HA_POS_ERROR;
	}
	| LIMIT ulonglong_num
	{
	  SELECT_LEX *sel= Select;
	  sel->select_limit= (ha_rows) $2;
	  sel->explicit_limit= 1;
	};

ULONG_NUM:
	NUM	        { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| LONG_NUM      { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| REAL_NUM 	{ int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| FLOAT_NUM	{ int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	;

ulonglong_num:
	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; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| REAL_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| FLOAT_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	;

procedure_clause:
	/* empty */
	| PROCEDURE ident			/* Procedure name */
	  {
	    LEX *lex=Lex;
	    if (&lex->select_lex != lex->current_select)
	    {
	      my_error(ER_WRONG_USAGE, MYF(0), "PROCEDURE", "subquery");
	      YYABORT;
	    }
	    lex->proc_list.elements=0;
	    lex->proc_list.first=0;
	    lex->proc_list.next= (byte**) &lex->proc_list.first;
	    if (add_proc_to_list(lex->thd, new Item_field(NULL,NULL,$2.str)))
	      YYABORT;
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
	  }
	  '(' procedure_list ')';


procedure_list:
	/* empty */ {}
	| procedure_list2 {};

procedure_list2:
	procedure_list2 ',' procedure_item
	| procedure_item;

procedure_item:
	  remember_name expr
	  {
	    LEX *lex= Lex;
	    if (add_proc_to_list(lex->thd, $2))
	      YYABORT;
	    if (!$2->name)
	      $2->set_name($1,(uint) ((char*) lex->tok_end - $1), YYTHD->charset());
	  }
          ;


select_var_list_init:
	   {
             LEX *lex=Lex;
	     if (!lex->describe && (!(lex->result= new select_dumpvar())))
	        YYABORT;
	   }
	   select_var_list
	   {}
           ;

select_var_list:
	   select_var_list ',' select_var_ident
	   | select_var_ident {}
           ;

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
           {
             LEX *lex=Lex;
	     sp_pvar_t *t;

	     if (!lex->spcont || !(t=lex->spcont->find_pvar(&$1)))
	     {
	       my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
	       YYABORT;
	     }
	     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;
	     }
	   }
           ;

into:
        INTO OUTFILE TEXT_STRING_sys
	{
          LEX *lex= Lex;
          lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
          if (!(lex->exchange= new sql_exchange($3.str, 0)) ||
              !(lex->result= new select_export(lex->exchange)))
            YYABORT;
	}
	opt_field_term opt_line_term
	| INTO DUMPFILE TEXT_STRING_sys
	{
	  LEX *lex=Lex;
	  if (!lex->describe)
	  {
	    lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
	    if (!(lex->exchange= new sql_exchange($3.str,1)))
	      YYABORT;
	    if (!(lex->result= new select_dump(lex->exchange)))
	      YYABORT;
	  }
	}
        | INTO select_var_list_init
	{
	  Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
	}
        ;

/*
  DO statement
*/

do:	DO_SYM
	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DO;
	  mysql_init_select(lex);
	}
	expr_list
	{
	  Lex->insert_list= $3;
	}
	;

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

drop:
	DROP opt_temporary table_or_tables if_exists table_list opt_restrict
	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DROP_TABLE;
	  lex->drop_temporary= $2;
	  lex->drop_if_exists= $4;
	}
	| DROP INDEX_SYM ident ON table_ident {}
	  {
	     LEX *lex=Lex;
	     lex->sql_command= SQLCOM_DROP_INDEX;
	     lex->alter_info.drop_list.empty();
	     lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
                                                                $3.str));
	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,
							TL_OPTION_UPDATING))
	      YYABORT;
	  }
	| DROP DATABASE if_exists ident
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_DROP_DB;
	    lex->drop_if_exists=$3;
	    lex->name=$4.str;
	 }
	| DROP FUNCTION_SYM if_exists sp_name
	  {
	    LEX *lex=Lex;
	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
	      YYABORT;
	    }
	    lex->sql_command = SQLCOM_DROP_FUNCTION;
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
	  }
	| DROP PROCEDURE if_exists sp_name
	  {
	    LEX *lex=Lex;
	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
	      YYABORT;
	    }
	    lex->sql_command = SQLCOM_DROP_PROCEDURE;
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
	  }
	| DROP USER clear_privileges user_list
	  {
	    Lex->sql_command = SQLCOM_DROP_USER;
          }
	| 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;

            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;
            lex->name_and_length= $5;
          }
	;

table_list:
	table_name
	| table_list ',' table_name;

table_name:
	table_ident
	{
	  if (!Select->add_table_to_list(YYTHD, $1, NULL, TL_OPTION_UPDATING))
	    YYABORT;
	}
	;

if_exists:
	/* empty */ { $$= 0; }
	| IF EXISTS { $$= 1; }
	;

opt_temporary:
	/* empty */ { $$= 0; }
	| TEMPORARY { $$= 1; }
	;
/*
** Insert : add new data to table
*/

insert:
	INSERT
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_INSERT;
	  lex->duplicates= DUP_ERROR; 
	  mysql_init_select(lex);
	  /* for subselects */
          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
	} insert_lock_option
	opt_ignore insert2
	{
	  Select->set_lock_for_tables($3);
	  Lex->current_select= &Lex->select_lex;
	}
	insert_field_spec opt_insert_update
	{}
	;

replace:
	REPLACE
	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_REPLACE;
	  lex->duplicates= DUP_REPLACE;
	  mysql_init_select(lex);
	  lex->select_lex.resolve_mode= SELECT_LEX::INSERT_MODE;
	}
	replace_lock_option insert2
	{
	  Select->set_lock_for_tables($3);
	  Lex->current_select= &Lex->select_lex;
	}
	insert_field_spec
	{}
	;

insert_lock_option:
	/* empty */	{ $$= TL_WRITE_CONCURRENT_INSERT; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; }
	| DELAYED_SYM	{ $$= TL_WRITE_DELAYED; }
	| HIGH_PRIORITY { $$= TL_WRITE; }
	;

replace_lock_option:
	opt_low_priority { $$= $1; }
	| DELAYED_SYM	 { $$= TL_WRITE_DELAYED; };

insert2:
	INTO insert_table {}
	| insert_table {};

insert_table:
	table_name
	{
	  LEX *lex=Lex;
	  lex->field_list.empty();
	  lex->many_values.empty();
	  lex->insert_list=0;
	};

insert_field_spec:
	insert_values {}
	| '(' ')' insert_values {}
	| '(' fields ')' insert_values {}
	| SET
	  {
	    LEX *lex=Lex;
	    if (!(lex->insert_list = new List_item) ||
		lex->many_values.push_back(lex->insert_list))
	      YYABORT;
	   }
	   ident_eq_list;

opt_field_spec:
	/* empty */	  { }
	| '(' fields ')'  { }
	| '(' ')'	  { };

fields:
	fields ',' insert_ident { Lex->field_list.push_back($3); }
	| insert_ident		{ Lex->field_list.push_back($1); };

insert_values:
	VALUES	values_list  {}
	| VALUE_SYM values_list  {}
	|     create_select     { Select->set_braces(0);} union_clause {}
	| '(' create_select ')' { Select->set_braces(1);} union_opt {}
        ;

values_list:
	values_list ','  no_braces
	| no_braces;

ident_eq_list:
	ident_eq_list ',' ident_eq_value
	|
	ident_eq_value;

ident_eq_value:
	simple_ident_nospvar equal expr_or_default
	 {
	  LEX *lex=Lex;
	  if (lex->field_list.push_back($1) ||
	      lex->insert_list->push_back($3))
	    YYABORT;
	 };

equal:	EQ		{}
	| SET_VAR	{}
	;

opt_equal:
	/* empty */	{}
	| equal		{}
	;

no_braces:
	 '('
	 {
	    if (!(Lex->insert_list = new List_item))
	      YYABORT;
	 }
	 opt_values ')'
	 {
	  LEX *lex=Lex;
	  if (lex->many_values.push_back(lex->insert_list))
	    YYABORT;
	 };

opt_values:
	/* empty */ {}
	| values;

values:
	values ','  expr_or_default
	{
	  if (Lex->insert_list->push_back($3))
	    YYABORT;
	}
	| expr_or_default
	  {
	    if (Lex->insert_list->push_back($1))
	      YYABORT;
	  }
	;

expr_or_default:
	expr	  { $$= $1;}
	| DEFAULT {$$= new Item_default_value(); }
	;

opt_insert_update:
        /* empty */
        | ON DUPLICATE_SYM	{ Lex->duplicates= DUP_UPDATE; }
          KEY_SYM UPDATE_SYM insert_update_list
        ;

/* Update rows in a table */

update:
	UPDATE_SYM
	{
	  LEX *lex= Lex;
	  mysql_init_select(lex);
          lex->sql_command= SQLCOM_UPDATE;
	  lex->lock_option= TL_UNLOCK; 	/* Will be set later */
	  lex->duplicates= DUP_ERROR; 
        }
        opt_low_priority opt_ignore join_table_list
	SET update_list
	{
	  LEX *lex= Lex;
          if (lex->select_lex.table_list.elements > 1)
	  {
            lex->sql_command= SQLCOM_UPDATE_MULTI;
	    lex->multi_lock_option= $3;
	  }
	  else if (lex->select_lex.get_table_list()->derived)
	  {
	    /* it is single table update and it is update of derived table */
	    my_error(ER_NON_UPDATABLE_TABLE, MYF(0),
                     lex->select_lex.get_table_list()->alias, "UPDATE");
	    YYABORT;
	  }
	  else
	    Select->set_lock_for_tables($3);
	}
	where_clause opt_order_clause delete_limit_clause {}
	;

update_list:
	update_list ',' update_elem
	| update_elem;

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

insert_update_list:
	insert_update_list ',' insert_update_elem
	| insert_update_elem;

insert_update_elem:
	simple_ident_nospvar equal expr_or_default
	{
	  LEX *lex= Lex;
	  if (lex->update_list.push_back($1) || 
	      lex->value_list.push_back($3))
	    YYABORT;
	};

opt_low_priority:
	/* empty */	{ $$= YYTHD->update_lock_default; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };

/* Delete rows from a table */

delete:
	DELETE_SYM
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_DELETE;
	  mysql_init_select(lex);
	  lex->lock_option= lex->thd->update_lock_default;
	  lex->ignore= 0;
	  lex->select_lex.init_order();
	}
	opt_delete_options single_multi {}
	;

single_multi:
 	FROM table_ident
	{
	  if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
					 Lex->lock_option))
	    YYABORT;
	}
	where_clause opt_order_clause
	delete_limit_clause {}
	| table_wild_list
	  { mysql_init_multi_delete(Lex); }
          FROM join_table_list where_clause
	| FROM table_wild_list
	  { mysql_init_multi_delete(Lex); }
	  USING join_table_list where_clause
	  {}
	;

table_wild_list:
	  table_wild_one {}
	  | table_wild_list ',' table_wild_one {};

table_wild_one:
	ident opt_wild opt_table_alias
	{
	  if (!Select->add_table_to_list(YYTHD, new Table_ident($1), $3,
					 TL_OPTION_UPDATING, Lex->lock_option))
	    YYABORT;
        }
	| ident '.' ident opt_wild opt_table_alias
	  {
	    if (!Select->add_table_to_list(YYTHD,
					   new Table_ident(YYTHD, $1, $3, 0),
					   $5, TL_OPTION_UPDATING,
					   Lex->lock_option))
	      YYABORT;
	  }
	;

opt_wild:
	/* empty */	{}
	| '.' '*'	{};


opt_delete_options:
	/* empty */	{}
	| opt_delete_option opt_delete_options {};

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

truncate:
	TRUNCATE_SYM opt_table_sym table_name
	{
	  LEX* lex= Lex;
	  lex->sql_command= SQLCOM_TRUNCATE;
	  lex->select_lex.options= 0;
	  lex->select_lex.init_order();
	}
	;

opt_table_sym:
	/* empty */
	| TABLE_SYM;

/* Show things */

show:	SHOW
	{
	  LEX *lex=Lex;
	  lex->wild=0;
	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	}
	show_param
	{}
	;

show_param:
         DATABASES ext_select_item_list wild_and_where
         {
           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;
         }
         | opt_full TABLES ext_select_item_list opt_db wild_and_where
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLES;
             lex->select_lex.db= $4;
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_NAMES))
               YYABORT;
           }
         | TABLE_SYM STATUS_SYM ext_select_item_list opt_db wild_and_where
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLE_STATUS;
             lex->select_lex.db= $4;
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLES))
               YYABORT;
           }
        | OPEN_SYM TABLES ext_select_item_list opt_db wild_and_where
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_OPEN_TABLES;
            lex->select_lex.db= $4;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_OPEN_TABLES))
              YYABORT;
          }
	| ENGINE_SYM storage_engines 
	  { Lex->create_info.db_type= $2; }
	  show_engine_param
	| opt_full COLUMNS ext_select_item_list from_or_in table_ident opt_db wild_and_where
	  {
 	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SELECT;
	    lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
	    if ($6)
	      $5->change_db($6);
	    if (prepare_schema_table(YYTHD, lex, $5, SCH_COLUMNS))
	      YYABORT;
	  }
        | NEW_SYM MASTER_SYM FOR_SYM SLAVE WITH MASTER_LOG_FILE_SYM EQ
	  TEXT_STRING_sys AND_SYM MASTER_LOG_POS_SYM EQ ulonglong_num
	  AND_SYM MASTER_SERVER_ID_SYM EQ
	ULONG_NUM
          {
	    Lex->sql_command = SQLCOM_SHOW_NEW_MASTER;
	    Lex->mi.log_file_name = $8.str;
	    Lex->mi.pos = $12;
	    Lex->mi.server_id = $16;
          }
        | master_or_binary LOGS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_BINLOGS;
          }
        | SLAVE HOSTS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_HOSTS;
          }
        | BINLOG_SYM EVENTS_SYM binlog_in binlog_from
          {
	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_BINLOG_EVENTS;
          } opt_limit_clause_init
        | keys_or_index ext_select_item_list from_or_in table_ident opt_db where_clause
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_KEYS;
	    if ($5)
	      $4->change_db($5);
            if (prepare_schema_table(YYTHD, lex, $4, SCH_STATISTICS))
              YYABORT;
	  }
	| COLUMN_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_COLUMN_TYPES;
	  }
	| TABLE_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
	    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;
	  }
	| PRIVILEGES
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_PRIVILEGES;
	  }
        | COUNT_SYM '(' '*' ')' WARNINGS
          { (void) create_select_for_variable("warning_count"); }
        | COUNT_SYM '(' '*' ')' ERRORS
	  { (void) create_select_for_variable("error_count"); }
        | WARNINGS opt_limit_clause_init
          { Lex->sql_command = SQLCOM_SHOW_WARNS;}
        | ERRORS opt_limit_clause_init
          { Lex->sql_command = SQLCOM_SHOW_ERRORS;}
        | opt_var_type STATUS_SYM ext_select_item_list wild_and_where
          {
            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;
          }
        | INNOBASE_SYM STATUS_SYM
          { Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS; WARN_DEPRECATED("SHOW INNODB STATUS", "SHOW ENGINE INNODB STATUS"); }
        | MUTEX_SYM STATUS_SYM
          { Lex->sql_command = SQLCOM_SHOW_MUTEX_STATUS; }
	| opt_full PROCESSLIST_SYM
	  { Lex->sql_command= SQLCOM_SHOW_PROCESSLIST;}
        | opt_var_type  VARIABLES ext_select_item_list wild_and_where
          {
            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;
          }
        | charset ext_select_item_list wild_and_where
          {
            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;
          }
        | COLLATION_SYM ext_select_item_list wild_and_where
          {
            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;
          }
	| BERKELEY_DB_SYM LOGS_SYM
	  { Lex->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW BDB LOGS", "SHOW ENGINE BDB LOGS"); }
	| LOGS_SYM
	  { Lex->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW LOGS", "SHOW ENGINE BDB LOGS"); }
	| 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;
            }
            curr_user->password.str=NullS;
	    lex->grant_user= curr_user;
	  }
	| GRANTS FOR_SYM user
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    lex->grant_user=$3;
	    lex->grant_user->password.str=NullS;
	  }
	| CREATE DATABASE opt_if_not_exists ident
	  {
	    Lex->sql_command=SQLCOM_SHOW_CREATE_DB;
	    Lex->create_info.options=$3;
	    Lex->name=$4.str;
	  }
        | CREATE TABLE_SYM table_ident
          {
            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))
	      YYABORT;
            lex->only_view= 1;
	  }
        | MASTER_SYM STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_MASTER_STAT;
          }
        | SLAVE STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_STAT;
          }
	| 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;
	  }
	| PROCEDURE STATUS_SYM ext_select_item_list wild_and_where
	  {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_PROC;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
	  }
	| FUNCTION_SYM STATUS_SYM ext_select_item_list wild_and_where
	  {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_FUNC;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
              YYABORT;
	  };

show_engine_param:
	STATUS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_INNODB:
	      Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS;
	      break;
	    default:
	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "STATUS");
	      YYABORT;
	    }
	  }
	| LOGS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_BERKELEY_DB:
	      Lex->sql_command = SQLCOM_SHOW_LOGS;
	      break;
	    default:
	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "LOGS");
	      YYABORT;
	    }
	  };

master_or_binary:
	MASTER_SYM
	| BINARY;

opt_storage:
	/* empty */
	| STORAGE_SYM;

opt_db:
	/* empty */  { $$= 0; }
	| from_or_in ident { $$= $2.str; };

opt_full:
	/* empty */ { Lex->verbose=0; }
	| FULL	    { Lex->verbose=1; };

from_or_in:
	FROM
	| IN_SYM;

binlog_in:
	/* empty */ { Lex->mi.log_file_name = 0; }
        | IN_SYM TEXT_STRING_sys { Lex->mi.log_file_name = $2.str; };

binlog_from:
	/* empty */ { Lex->mi.pos = 4; /* skip magic number */ }
        | FROM ulonglong_num { Lex->mi.pos = $2; };

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();
        }
      ;

ext_select_item_list:
      {
        LEX *lex=Lex;
        SELECT_LEX *sel= lex->current_select;
        lex->lock_option= TL_READ;
        mysql_init_select(lex);
        lex->current_select->parsing_place= SELECT_LIST;
      }
      ext_select_item_list2;

ext_select_item_list2:
      /* empty */        {}
      | select_item_list {};


/* A Oracle compatible synonym for show */
describe:
	describe_command table_ident
	{
          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))
	    YYABORT;
	}
	opt_describe_column {}
	| describe_command opt_extended_describe
	  { Lex->describe|= DESCRIBE_NORMAL; }
	  select
          {
	    LEX *lex=Lex;
	    lex->select_lex.options|= SELECT_DESCRIBE;
	  }
	;

describe_command:
	DESC
	| DESCRIBE;

opt_extended_describe:
	/* empty */ {}
	| EXTENDED_SYM { Lex->describe|= DESCRIBE_EXTENDED; }
	;

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


/* flush things */

flush:
	FLUSH_SYM opt_no_write_to_binlog
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_FLUSH; lex->type=0;
          lex->no_write_to_binlog= $2;
	}
	flush_options
	{}
	;

flush_options:
	flush_options ',' flush_option
	| flush_option;

flush_option:
	table_or_tables	{ Lex->type|= REFRESH_TABLES; } opt_table_list {}
	| TABLES WITH READ_SYM LOCK_SYM { Lex->type|= REFRESH_TABLES | REFRESH_READ_LOCK; }
	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE_FREE; }
	| HOSTS_SYM	{ Lex->type|= REFRESH_HOSTS; }
	| PRIVILEGES	{ Lex->type|= REFRESH_GRANT; }
	| LOGS_SYM	{ Lex->type|= REFRESH_LOG; }
	| STATUS_SYM	{ Lex->type|= REFRESH_STATUS; }
        | SLAVE         { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM    { Lex->type|= REFRESH_MASTER; }
	| DES_KEY_FILE	{ Lex->type|= REFRESH_DES_KEY_FILE; }
 	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; };

opt_table_list:
	/* empty */  {;}
	| table_list {;};

reset:
	RESET_SYM
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RESET; lex->type=0;
	} reset_options
	{}
	;

reset_options:
	reset_options ',' reset_option
	| reset_option;

reset_option:
        SLAVE                 { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM          { Lex->type|= REFRESH_MASTER; }
	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE;};

purge:
	PURGE
	{
	  LEX *lex=Lex;
	  lex->type=0;
	} purge_options
	{}
	;

purge_options:
	master_or_binary LOGS_SYM purge_option
	;

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

/* kill threads */

kill:
	KILL_SYM kill_option expr
	{
	  LEX *lex=Lex;
	  lex->value_list.empty();
	  lex->value_list.push_front($3);
          lex->sql_command= SQLCOM_KILL;
	};

kill_option:
	/* empty */	 { Lex->type= 0; }
	| CONNECTION_SYM { Lex->type= 0; }
	| QUERY_SYM      { Lex->type= ONLY_KILL_QUERY; };

/* change database */

use:	USE_SYM ident
	{
	  LEX *lex=Lex;
	  lex->sql_command=SQLCOM_CHANGE_DB;
	  lex->select_lex.db= $2.str;
	};

/* import, export of files */

load:	LOAD DATA_SYM load_data_lock opt_local INFILE TEXT_STRING_sys
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_LOAD;
	  lex->lock_option= $3;
	  lex->local_file=  $4;
	  lex->duplicates= DUP_ERROR;
	  lex->ignore= 0;
	  if (!(lex->exchange= new sql_exchange($6.str,0)))
	    YYABORT;
	  lex->field_list.empty();
	}
	opt_duplicate INTO TABLE_SYM table_ident opt_field_term opt_line_term
	opt_ignore_lines opt_field_spec
	{
	  if (!Select->add_table_to_list(YYTHD, $11, NULL, TL_OPTION_UPDATING))
	    YYABORT;
	}
        |
	LOAD TABLE_SYM table_ident FROM MASTER_SYM
        {
	  Lex->sql_command = SQLCOM_LOAD_MASTER_TABLE;
	  if (!Select->add_table_to_list(YYTHD, $3, NULL, TL_OPTION_UPDATING))
	    YYABORT;

        }
        |
	LOAD DATA_SYM FROM MASTER_SYM
        {
	  Lex->sql_command = SQLCOM_LOAD_MASTER_DATA;
        };

opt_local:
	/* empty */	{ $$=0;}
	| LOCAL_SYM	{ $$=1;};

load_data_lock:
	/* empty */	{ $$= YYTHD->update_lock_default; }
	| CONCURRENT	{ $$= TL_WRITE_CONCURRENT_INSERT ; }
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };


opt_duplicate:
	/* empty */	{ Lex->duplicates=DUP_ERROR; }
	| REPLACE	{ Lex->duplicates=DUP_REPLACE; }
	| IGNORE_SYM	{ Lex->ignore= 1; };

opt_field_term:
	/* empty */
	| COLUMNS field_term_list;

field_term_list:
	field_term_list field_term
	| field_term;

field_term:
	TERMINATED BY text_string 
          {
            DBUG_ASSERT(Lex->exchange);
            Lex->exchange->field_term= $3;
          }
	| OPTIONALLY ENCLOSED BY text_string
	  {
            LEX *lex= Lex;
            DBUG_ASSERT(lex->exchange);
            lex->exchange->enclosed= $4;
            lex->exchange->opt_enclosed= 1;
	  }
        | ENCLOSED BY text_string
          {
            DBUG_ASSERT(Lex->exchange);
            Lex->exchange->enclosed= $3;
          }
        | ESCAPED BY text_string
          {
            DBUG_ASSERT(Lex->exchange);
            Lex->exchange->escaped= $3;
          };

opt_line_term:
	/* empty */
	| LINES line_term_list;

line_term_list:
	line_term_list line_term
	| line_term;

line_term:
        TERMINATED BY text_string
          {
            DBUG_ASSERT(Lex->exchange);
            Lex->exchange->line_term= $3;
          }
        | STARTING BY text_string
          {
            DBUG_ASSERT(Lex->exchange);
            Lex->exchange->line_start= $3;
          };

opt_ignore_lines:
	/* empty */
        | IGNORE_SYM NUM LINES
          {
            DBUG_ASSERT(Lex->exchange);
            Lex->exchange->skip_lines= atol($2.str);
          };

/* Common definitions */

text_literal:
	TEXT_STRING_literal
	{
	  THD *thd= YYTHD;
	  $$ = new Item_string($1.str,$1.length,thd->variables.collation_connection);
	}
	| NCHAR_STRING
	{ $$=  new Item_string($1.str,$1.length,national_charset_info); }
	| UNDERSCORE_CHARSET TEXT_STRING
	  { $$ = new Item_string($2.str,$2.length,Lex->charset); }
	| text_literal TEXT_STRING_literal
	  { ((Item_string*) $1)->append($2.str,$2.length); }
	;

text_string:
	TEXT_STRING_literal
	{ $$=  new (YYTHD->mem_root) String($1.str,$1.length,YYTHD->variables.collation_connection); }
	| HEX_NUM
	  {
	    Item *tmp= new Item_hex_string($1.str, $1.length);
	    /*
	      it is OK only emulate fix_fields, because we need only
              value of constant
	    */
	    $$= tmp ?
	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
	      (String*) 0;
	  }
        | 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;
          }
	;

param_marker:
        '?'
        {
          THD *thd=YYTHD;
	  LEX *lex= thd->lex;
          if (thd->command == COM_PREPARE)
          {
            Item_param *item= new Item_param((uint) (lex->tok_start -
                                                     (uchar *) thd->query));
            if (!($$= item) || lex->param_list.push_back(item))
            {
	      my_message(ER_OUT_OF_RESOURCES, ER(ER_OUT_OF_RESOURCES), MYF(0));
	      YYABORT;
            }
          }
          else
          {
            yyerror(ER(ER_SYNTAX_ERROR));
            YYABORT;
          }
        }
	;

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


literal:
	text_literal	{ $$ =	$1; }
	| NUM_literal	{ $$ = $1; }
	| NULL_SYM	{ $$ =	new Item_null();
			  Lex->next_state=MY_LEX_OPERATOR_OR_IDENT;}
	| HEX_NUM	{ $$ =	new Item_hex_string($1.str, $1.length);}
	| BIN_NUM	{ $$= new Item_bin_string($1.str, $1.length); }
	| UNDERSCORE_CHARSET HEX_NUM
	  {
	    Item *tmp= new Item_hex_string($2.str, $2.length);
	    /*
	      it is OK only emulate fix_fieds, because we need only
              value of constant
	    */
	    String *str= tmp ?
	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
	      (String*) 0;
	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
	  }
	| 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;
	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
          }
	| DATE_SYM text_literal { $$ = $2; }
	| TIME_SYM text_literal { $$ = $2; }
	| TIMESTAMP text_literal { $$ = $2; };

NUM_literal:
	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); }
	| ULONGLONG_NUM	{ $$ =	new Item_uint($1.str, $1.length); }
	| REAL_NUM
	{
	   $$= new Item_real($1.str, $1.length);
	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
	| FLOAT_NUM
	{
	   $$ =	new Item_float($1.str, $1.length);
	   if (YYTHD->net.report_error)
	   {
	     YYABORT;
	   }
	}
	;
	
/**********************************************************************
** Createing different items.
**********************************************************************/

insert_ident:
	simple_ident_nospvar { $$=$1; }
	| table_wild	 { $$=$1; };

table_wild:
	ident '.' '*'
	{
	  $$ = new Item_field(NullS,$1.str,"*");
	  Lex->current_select->with_wild++;
	}
	| ident '.' ident '.' '*'
	{
	  $$ = new Item_field((YYTHD->client_capabilities &
   			     CLIENT_NO_SCHEMA ? NullS : $1.str),
			     $3.str,"*");
	  Lex->current_select->with_wild++;
	}
	;

order_ident:
	expr { $$=$1; };

simple_ident:
	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:
	ident
	{
	  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_q:
	ident '.' ident
	{
	  THD *thd= YYTHD;
	  LEX *lex= thd->lex;
         
          /*
            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 &&
              (!my_strcasecmp(system_charset_info, $1.str, "NEW") || 
               !my_strcasecmp(system_charset_info, $1.str, "OLD")))
          {
            Item_trigger_field *trg_fld;
            bool new_row= ($1.str[0]=='N' || $1.str[0]=='n');
            
            if (lex->trg_chistics.event == TRG_EVENT_INSERT &&
                !new_row)
            {
              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "OLD", "on INSERT");
              YYABORT;
            }
            
            if (lex->trg_chistics.event == TRG_EVENT_DELETE &&
                new_row)
            {
              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "NEW", "on DELETE");
              YYABORT;
            }
            
            if (!(trg_fld= new Item_trigger_field(new_row ?
                                                  Item_trigger_field::NEW_ROW:
                                                  Item_trigger_field::OLD_ROW,
                                                  $3.str)))
              YYABORT;
          
            /*
              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);
            
            $$= (Item *)trg_fld;
          }
          else
          {
	    SELECT_LEX *sel= lex->current_select;
	    if (sel->no_table_names_allowed)
	    {
	      my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                       MYF(0), $1.str, thd->where);
	    }
	    $$= (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);
          }
        }
	| '.' ident '.' ident
	{
	  THD *thd= YYTHD;
	  LEX *lex= thd->lex;
	  SELECT_LEX *sel= lex->current_select;
	  if (sel->no_table_names_allowed)
	  {
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $2.str, thd->where);
	  }
	  $$= (sel->parsing_place != IN_HAVING ||
	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field(NullS,$2.str,$4.str) :
              (Item*) new Item_ref(NullS, $2.str, $4.str);
	}
	| ident '.' ident '.' ident
	{
	  THD *thd= YYTHD;
	  LEX *lex= thd->lex;
	  SELECT_LEX *sel= lex->current_select;
	  if (sel->no_table_names_allowed)
	  {
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $3.str, thd->where);
	  }
	  $$= (sel->parsing_place != IN_HAVING ||
	       sel->get_in_sum_expr() > 0) ?
	      (Item*) new Item_field((YYTHD->client_capabilities &
				      CLIENT_NO_SCHEMA ? NullS : $1.str),
				     $3.str, $5.str) :
	      (Item*) new Item_ref((YYTHD->client_capabilities &
				    CLIENT_NO_SCHEMA ? NullS : $1.str),
                                   $3.str, $5.str);
	};


field_ident:
	ident			{ $$=$1;}
	| ident '.' ident	{ $$=$3;}	/* Skip schema name in create*/
	| '.' ident		{ $$=$2;}	/* For Delphi */;

table_ident:
	ident			{ $$=new Table_ident($1); }
	| ident '.' ident	{ $$=new Table_ident(YYTHD, $1,$3,0);}
	| '.' ident		{ $$=new Table_ident($2);} /* For Delphi */
        ;

table_ident_nodb:
	ident			{ LEX_STRING db={(char*) any_db,3}; $$=new Table_ident(YYTHD, db,$1,0); }
        ;

IDENT_sys:
	IDENT { $$= $1; }
	| IDENT_QUOTED
	  {
	    THD *thd= YYTHD;
	    if (thd->charset_is_system_charset)
            {
              CHARSET_INFO *cs= system_charset_info;
              uint wlen= cs->cset->well_formed_len(cs, $1.str,
                                                   $1.str+$1.length,
                                                   $1.length);
              if (wlen < $1.length)
              {
                my_error(ER_INVALID_CHARACTER_STRING, MYF(0),
                         cs->csname, $1.str + wlen);
                YYABORT;
              }
	      $$= $1;
            }
	    else
	      thd->convert_string(&$$, system_charset_info,
				  $1.str, $1.length, thd->charset());
	  }
	;

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

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


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

ident_or_text:
	ident 			{ $$=$1;}
	| TEXT_STRING_sys	{ $$=$1;}
	| LEX_HOSTNAME		{ $$=$1;};

user:
	ident_or_text
	{
	  THD *thd= YYTHD;
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
	    YYABORT;
	  $$->user = $1;
	  $$->host.str= (char *) "%";
	  $$->host.length= 1;
	}
	| ident_or_text '@' ident_or_text
	  {
	    THD *thd= YYTHD;
	    if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
	      YYABORT;
	    $$->user = $1; $$->host=$3;
	  }
	| CURRENT_USER optional_braces
	{
          THD *thd= YYTHD;
          if (!($$=(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;
          }
	};

/* Keyword that we allow for identifiers */

keyword:
	ACTION			{}
	| ADDDATE_SYM		{}
	| AFTER_SYM		{}
	| AGAINST		{}
	| AGGREGATE_SYM		{}
	| ALGORITHM_SYM		{}
	| ANY_SYM		{}
	| ASCII_SYM		{}
	| AUTO_INC		{}
	| AVG_ROW_LENGTH	{}
	| AVG_SYM		{}
	| BACKUP_SYM		{}
	| BEGIN_SYM		{}
	| BERKELEY_DB_SYM	{}
	| BINLOG_SYM		{}
	| BIT_SYM		{}
	| BOOL_SYM		{}
	| BOOLEAN_SYM		{}
	| BYTE_SYM		{}
	| BTREE_SYM		{}
	| CACHE_SYM		{}
	| CASCADED              {}
	| CHAIN_SYM		{}
	| CHANGED		{}
	| CHARSET		{}
	| CHECKSUM_SYM		{}
	| CIPHER_SYM		{}
	| CLIENT_SYM		{}
	| CLOSE_SYM		{}
	| COLLATION_SYM		{}
        | COLUMNS               {}
	| COMMENT_SYM		{}
	| COMMITTED_SYM		{}
	| COMMIT_SYM		{}
	| COMPACT_SYM		{}
	| COMPRESSED_SYM	{}
	| CONCURRENT		{}
	| CONSISTENT_SYM	{}
	| CONTAINS_SYM          {}
	| CUBE_SYM		{}
	| DATA_SYM		{}
	| DATETIME		{}
	| DATE_SYM		{}
	| DAY_SYM		{}
        | DEALLOCATE_SYM        {}
	| DEFINER_SYM		{}
	| DELAY_KEY_WRITE_SYM	{}
	| DES_KEY_FILE		{}
	| DIRECTORY_SYM		{}
	| DISCARD		{}
	| DO_SYM		{}
	| DUMPFILE		{}
	| DUPLICATE_SYM		{}
	| DYNAMIC_SYM		{}
	| END			{}
	| ENUM			{}
	| ENGINE_SYM		{}
	| ENGINES_SYM		{}
	| ERRORS		{}
	| ESCAPE_SYM		{}
	| EVENTS_SYM		{}
	| EXECUTE_SYM		{}
        | EXPANSION_SYM         {}
	| EXTENDED_SYM		{}
	| FAST_SYM		{}
	| FOUND_SYM		{}
	| DISABLE_SYM		{}
	| ENABLE_SYM		{}
	| FULL			{}
	| FILE_SYM		{}
	| FIRST_SYM		{}
	| FIXED_SYM		{}
	| FLUSH_SYM		{}
	| FRAC_SECOND_SYM	{}
	| GEOMETRY_SYM		{}
	| GEOMETRYCOLLECTION	{}
	| GET_FORMAT		{}
	| GRANTS		{}
	| GLOBAL_SYM		{}
	| HANDLER_SYM		{}
	| HASH_SYM		{}
	| HELP_SYM		{}
	| HOSTS_SYM		{}
	| HOUR_SYM		{}
	| IDENTIFIED_SYM	{}
	| INVOKER_SYM		{}
	| IMPORT		{}
	| INDEXES		{}
	| ISOLATION		{}
	| ISSUER_SYM		{}
	| INNOBASE_SYM		{}
	| INSERT_METHOD		{}
	| RELAY_THREAD		{}
	| LABEL_SYM             {}
	| LANGUAGE_SYM          {}
	| LAST_SYM		{}
	| LEAVES                {}
	| LEVEL_SYM		{}
	| LINESTRING		{}
	| LOCAL_SYM		{}
	| LOCKS_SYM		{}
	| 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	{}
	| MASTER_SERVER_ID_SYM  {}
	| MASTER_CONNECT_RETRY_SYM	{}
	| MASTER_SSL_SYM	{}
	| MASTER_SSL_CA_SYM	{}
	| MASTER_SSL_CAPATH_SYM	{}
	| MASTER_SSL_CERT_SYM	{}
	| MASTER_SSL_CIPHER_SYM	{}
	| MASTER_SSL_KEY_SYM	{}
	| MAX_CONNECTIONS_PER_HOUR	 {}
	| MAX_QUERIES_PER_HOUR	{}
	| MAX_UPDATES_PER_HOUR	{}
	| MAX_USER_CONNECTIONS_SYM {}
	| MEDIUM_SYM		{}
	| MERGE_SYM		{}
	| MICROSECOND_SYM	{}
	| MINUTE_SYM		{}
	| MIN_ROWS		{}
	| MODIFY_SYM		{}
	| MODE_SYM		{}
	| MONTH_SYM		{}
	| MULTILINESTRING	{}
	| MULTIPOINT		{}
	| MULTIPOLYGON		{}
  | MUTEX_SYM   {}
	| NAME_SYM              {}
	| NAMES_SYM		{}
	| NATIONAL_SYM		{}
	| NCHAR_SYM		{}
	| NDBCLUSTER_SYM	{}
	| NEXT_SYM		{}
	| NEW_SYM		{}
	| NO_SYM		{}
	| NONE_SYM		{}
	| NVARCHAR_SYM		{}
	| OFFSET_SYM		{}
	| OLD_PASSWORD		{}
	| ONE_SHOT_SYM		{}
	| OPEN_SYM		{}
	| PACK_KEYS_SYM		{}
	| PARTIAL		{}
	| PASSWORD		{}
	| POINT_SYM		{}
	| POLYGON		{}
        | PREPARE_SYM           {}
	| PREV_SYM		{}
        | PRIVILEGES            {}
	| PROCESS		{}
	| PROCESSLIST_SYM	{}
	| QUARTER_SYM		{}
	| QUERY_SYM		{}
	| QUICK			{}
	| RAID_0_SYM		{}
	| RAID_CHUNKS		{}
	| RAID_CHUNKSIZE	{}
	| RAID_STRIPED_SYM	{}
	| RAID_TYPE		{}
	| REDUNDANT_SYM		{}
	| RELAY_LOG_FILE_SYM	{}
	| RELAY_LOG_POS_SYM	{}
	| RELOAD		{}
	| REPAIR		{}
	| REPEATABLE_SYM	{}
	| REPLICATION		{}
	| RESET_SYM		{}
	| RESOURCES		{}
	| RESTORE_SYM		{}
	| RETURNS_SYM           {}
	| ROLLBACK_SYM		{}
	| ROLLUP_SYM		{}
	| ROUTINE_SYM		{}
	| ROWS_SYM		{}
	| ROW_FORMAT_SYM	{}
	| ROW_SYM		{}
	| RTREE_SYM		{}
	| SAVEPOINT_SYM		{}
	| SECOND_SYM		{}
	| SECURITY_SYM		{}
	| SERIAL_SYM		{}
	| SERIALIZABLE_SYM	{}
	| SESSION_SYM		{}
	| SIGNED_SYM		{}
	| SIMPLE_SYM		{}
	| SHARE_SYM		{}
	| SHUTDOWN		{}
	| SLAVE			{}
	| SNAPSHOT_SYM		{}
	| SOUNDS_SYM		{}
	| SQL_CACHE_SYM		{}
	| SQL_BUFFER_RESULT	{}
	| SQL_NO_CACHE_SYM	{}
	| SQL_THREAD		{}
	| START_SYM		{}
	| STATUS_SYM		{}
	| STOP_SYM		{}
	| STORAGE_SYM		{}
	| STRING_SYM		{}
	| SUBDATE_SYM		{}
	| SUBJECT_SYM		{}
	| SUPER_SYM		{}
        | TABLES                {}
	| TABLESPACE		{}
	| TEMPORARY		{}
	| TEMPTABLE_SYM		{}
	| TEXT_SYM		{}
	| TRANSACTION_SYM	{}
	| TRUNCATE_SYM		{}
	| TIMESTAMP		{}
	| TIMESTAMP_ADD		{}
	| TIMESTAMP_DIFF	{}
	| TIME_SYM		{}
	| TYPE_SYM		{}
	| TYPES_SYM		{}
        | UDF_RETURNS_SYM       {}
	| FUNCTION_SYM		{}
	| UNCOMMITTED_SYM	{}
	| UNDEFINED_SYM		{}
	| UNICODE_SYM		{}
	| UNKNOWN_SYM		{}
	| UNTIL_SYM		{}
	| USER			{}
	| USE_FRM		{}
	| VARIABLES		{}
	| VIEW_SYM		{}
	| VALUE_SYM		{}
	| WARNINGS		{}
	| WEEK_SYM		{}
	| WORK_SYM		{}
	| X509_SYM		{}
	| YEAR_SYM		{}
	;

/* Option functions */

set:
	SET opt_option
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SET_OPTION;
	  mysql_init_select(lex);
	  lex->option_type=OPT_SESSION;
	  lex->var_list.empty();
          lex->one_shot_set= 0;
	}
	option_value_list
	{}
	;

opt_option:
	/* empty */ {}
	| OPTION {};

option_value_list:
	option_type option_value
	| option_value_list ',' option_type option_value;

option_type:
	/* empty */	{}
	| GLOBAL_SYM	{ Lex->option_type= OPT_GLOBAL; }
	| LOCAL_SYM	{ Lex->option_type= OPT_SESSION; }
	| SESSION_SYM	{ Lex->option_type= OPT_SESSION; }
	| ONE_SHOT_SYM	{ Lex->option_type= OPT_SESSION; Lex->one_shot_set= 1; }
	;

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

opt_var_ident_type:
	/* empty */		{ $$=OPT_DEFAULT; }
	| GLOBAL_SYM '.'	{ $$=OPT_GLOBAL; }
	| LOCAL_SYM '.'		{ $$=OPT_SESSION; }
	| SESSION_SYM '.'	{ $$=OPT_SESSION; }
	;

option_value:
	  '@' ident_or_text equal expr
	  {
            LEX *lex= Lex;

            if (lex->sphead && lex->sphead->m_type != TYPE_ENUM_PROCEDURE)
            {
              /*
                We have to use special instruction in functions and triggers
                because sp_instr_stmt will close all tables and thus ruin
                execution of statement invoking function or trigger.

                We also do not want to allow expression with subselects in
                this case.
              */
              if (lex->query_tables)
              {
                my_message(ER_SP_SUBSELECT_NYI, ER(ER_SP_SUBSELECT_NYI),
                           MYF(0));
                YYABORT;
              }
              sp_instr_set_user_var *i= 
                new sp_instr_set_user_var(lex->sphead->instructions(),
                                          lex->spcont, $2, $4);
	      lex->sphead->add_instr(i);
            }
            else
              lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
	  }
	| internal_variable_name equal set_expr_or_default
	  {
	    LEX *lex=Lex;

            if ($1.var == &trg_new_row_fake_var)
            {
              /* We are in trigger and assigning value to field of new row */
              Item *it;
              sp_instr_set_trigger_field *i;
              if (lex->query_tables)
              {
                my_message(ER_SP_SUBSELECT_NYI, ER(ER_SP_SUBSELECT_NYI),
                           MYF(0));
                YYABORT;
              }
              if ($3)
                it= $3;
              else
              {
                /* QQ: Shouldn't this be field's default value ? */
                it= new Item_null();
              }
              
              if (!(i= new sp_instr_set_trigger_field(
                             lex->sphead->instructions(), lex->spcont,
                             $1.base_name, it)))
                YYABORT;
              
              /*
                Let us add this item to list of all Item_trigger_field
                objects in trigger.
              */
              lex->trg_table_fields.link_in_list((byte *)&i->trigger_field,
                     (byte **)&i->trigger_field.next_trg_field);

              lex->sphead->add_instr(i);
            }
            else if ($1.var)
	    { /* System variable */
	      lex->var_list.push_back(new set_var(lex->option_type, $1.var,
						  &$1.base_name, $3));
	    }
            else
	    {
	      /* An SP local variable */
	      sp_pcontext *ctx= lex->spcont;
	      sp_pvar_t *spv;
              sp_instr_set *i;
	      Item *it;

	      spv= ctx->find_pvar(&$1.base_name);

	      if ($3)
	        it= $3;
	      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);
	      i->tables= lex->query_tables;
	      lex->query_tables= 0;
	      lex->sphead->add_instr(i);
	      spv->isset= TRUE;
	    }
	  }
	| '@' '@' opt_var_ident_type internal_variable_name equal set_expr_or_default
	  {
	    LEX *lex=Lex;
	    lex->var_list.push_back(new set_var((enum_var_type) $3, $4.var,
						&$4.base_name, $6));
	  }
	| TRANSACTION_SYM ISOLATION LEVEL_SYM isolation_types
	  {
	    LEX *lex=Lex;
	    LEX_STRING tmp;
	    tmp.str=0;
	    tmp.length=0;
	    lex->var_list.push_back(new set_var(lex->option_type,
						find_sys_var("tx_isolation"),
						&tmp,
						new Item_int((int32) $4)));
	  }
	| charset old_or_new_charset_name_or_default
	{
	  THD *thd= YYTHD;
	  LEX *lex= Lex;
	  $2= $2 ? $2: global_system_variables.character_set_client;
	  lex->var_list.push_back(new set_var_collation_client($2,thd->variables.collation_database,$2));
	}
	| NAMES_SYM charset_name_or_default opt_collate
	{
	  THD *thd= YYTHD;
	  LEX *lex= Lex;
	  $2= $2 ? $2 : global_system_variables.character_set_client;
	  $3= $3 ? $3 : $2;
	  if (!my_charset_same($2,$3))
	  {
	    my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                     $3->name, $2->csname);
	    YYABORT;
	  }
	  lex->var_list.push_back(new set_var_collation_client($3,$3,$3));
	}
	| PASSWORD equal text_or_password
	  {
	    THD *thd=YYTHD;
	    LEX_USER *user;
	    if (!(user=(LEX_USER*) thd->alloc(sizeof(LEX_USER))))
	      YYABORT;
	    user->host.str=0;
	    user->user.str=thd->priv_user;
	    thd->lex->var_list.push_back(new set_var_password(user, $3));
	  }
	| PASSWORD FOR_SYM user equal text_or_password
	  {
	    Lex->var_list.push_back(new set_var_password($3,$5));
	  }
	;

internal_variable_name:
	ident
	{
	  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;
	    $$.var= tmp;
	    $$.base_name.str=0;
	    $$.base_name.length=0;
            /*
              If this is time_zone variable we should open time zone
              describing tables 
            */
            if (tmp == &sys_time_zone &&
                lex->add_time_zone_tables_to_query_tables(YYTHD))
              YYABORT;
	  }
	  else
	  {
            /* An SP local variable */
	    $$.var= NULL;
	    $$.base_name= $1;
	  }
	}
	| ident '.' ident
	  {
            LEX *lex= Lex;
            if (check_reserved_words(&$1))
            {
	      yyerror(ER(ER_SYNTAX_ERROR));
              YYABORT;
            }
            if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
                (!my_strcasecmp(system_charset_info, $1.str, "NEW") || 
                 !my_strcasecmp(system_charset_info, $1.str, "OLD")))
            {
              if ($1.str[0]=='O' || $1.str[0]=='o')
              {
                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "OLD", "");
                YYABORT;
              }
              if (lex->trg_chistics.event == TRG_EVENT_DELETE)
              {
                my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0),
                         "NEW", "on DELETE");
                YYABORT;
              }
              if (lex->trg_chistics.action_time == TRG_ACTION_AFTER)
              {
                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "NEW", "after ");
                YYABORT;
              }
              /* This special combination will denote field of NEW row */
              $$.var= &trg_new_row_fake_var;
              $$.base_name= $3;
            }
            else
            {
              sys_var *tmp=find_sys_var($3.str, $3.length);
              if (!tmp)
                YYABORT;
              if (!tmp->is_struct())
                my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
              $$.var= tmp;
              $$.base_name= $1;
            }
	  }
	| DEFAULT '.' ident
	  {
	    sys_var *tmp=find_sys_var($3.str, $3.length);
	    if (!tmp)
	      YYABORT;
	    if (!tmp->is_struct())
	      my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
	    $$.var= tmp;
	    $$.base_name.str=    (char*) "default";
	    $$.base_name.length= 7;
	  }
        ;

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; }
	;

text_or_password:
	TEXT_STRING { $$=$1.str;}
	| PASSWORD '(' TEXT_STRING ')'
	  {
	    $$= $3.length ? YYTHD->variables.old_passwords ?
	        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;
	  }
          ;


set_expr_or_default:
	expr      { $$=$1; }
	| DEFAULT { $$=0; }
	| ON	  { $$=new Item_string("ON",  2, system_charset_info); }
	| ALL	  { $$=new Item_string("ALL", 3, system_charset_info); }
	| BINARY  { $$=new Item_string("binary", 6, system_charset_info); }
	;


/* Lock function */

lock:
	LOCK_SYM table_or_tables
	{
	  Lex->sql_command=SQLCOM_LOCK_TABLES;
	}
	table_lock_list
	{}
	;

table_or_tables:
	TABLE_SYM
	| TABLES;

table_lock_list:
	table_lock
	| table_lock_list ',' table_lock;

table_lock:
	table_ident opt_table_alias lock_option
	{
	  if (!Select->add_table_to_list(YYTHD, $1, $2, 0, (thr_lock_type) $3))
	   YYABORT;
	}
        ;

lock_option:
	READ_SYM	{ $$=TL_READ_NO_INSERT; }
	| WRITE_SYM     { $$=YYTHD->update_lock_default; }
	| LOW_PRIORITY WRITE_SYM { $$=TL_WRITE_LOW_PRIORITY; }
	| READ_SYM LOCAL_SYM { $$= TL_READ; }
        ;

unlock:
	UNLOCK_SYM table_or_tables { Lex->sql_command=SQLCOM_UNLOCK_TABLES; }
        ;


/*
** Handler: direct access to ISAM functions
*/

handler:
	HANDLER_SYM table_ident OPEN_SYM opt_table_alias
	{
	  LEX *lex= Lex;
	  lex->sql_command = SQLCOM_HA_OPEN;
	  if (!lex->current_select->add_table_to_list(lex->thd, $2, $4, 0))
	    YYABORT;
	}
	| HANDLER_SYM table_ident_nodb CLOSE_SYM
	{
	  LEX *lex= Lex;
	  lex->sql_command = SQLCOM_HA_CLOSE;
	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
	    YYABORT;
	}
	| HANDLER_SYM table_ident_nodb READ_SYM
	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_HA_READ;
	  lex->ha_rkey_mode= HA_READ_KEY_EXACT;	/* Avoid purify warnings */
	  lex->current_select->select_limit= 1;
	  lex->current_select->offset_limit= 0L;
	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
	    YYABORT;
        }
        handler_read_or_scan where_clause opt_limit_clause {}
        ;

handler_read_or_scan:
	handler_scan_function         { Lex->backup_dir= 0; }
        | ident handler_rkey_function { Lex->backup_dir= $1.str; }
        ;

handler_scan_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
        ;

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;  }
	| handler_rkey_mode
	{
	  LEX *lex=Lex;
	  lex->ha_read_mode = RKEY;
	  lex->ha_rkey_mode=$1;
	  if (!(lex->insert_list = new List_item))
	    YYABORT;
	} '(' values ')' { }
        ;

handler_rkey_mode:
	  EQ     { $$=HA_READ_KEY_EXACT;   }
	| GE     { $$=HA_READ_KEY_OR_NEXT; }
	| LE     { $$=HA_READ_KEY_OR_PREV; }
	| GT_SYM { $$=HA_READ_AFTER_KEY;   }
	| LT     { $$=HA_READ_BEFORE_KEY;  }
        ;

/* GRANT / REVOKE */

revoke:
	REVOKE clear_privileges revoke_command
	{}
        ;

revoke_command:
	grant_privileges ON opt_table FROM grant_list
	{
	  Lex->sql_command = SQLCOM_REVOKE;
        }
	|
	ALL opt_privileges ',' GRANT OPTION FROM grant_list
	{
	  Lex->sql_command = SQLCOM_REVOKE_ALL;
	}
	;

grant:
	GRANT clear_privileges grant_privileges ON opt_table TO_SYM grant_list
	require_clause grant_options
	{ Lex->sql_command= SQLCOM_GRANT; }
	;

grant_privileges:
	object_privilege_list { }
	| ALL opt_privileges
        { 
          Lex->all_privileges= 1; 
          Lex->grant= GLOBAL_ACLS;
        }
        ;

opt_privileges:
	/* empty */
	| PRIVILEGES
	;

object_privilege_list:
	object_privilege
	| object_privilege_list ',' object_privilege;

object_privilege:
	SELECT_SYM	{ Lex->which_columns = SELECT_ACL;} opt_column_list {}
	| 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 {}
	| DELETE_SYM	{ Lex->grant |= DELETE_ACL;}
	| USAGE		{}
	| INDEX_SYM	{ Lex->grant |= INDEX_ACL;}
	| ALTER		{ Lex->grant |= ALTER_ACL;}
	| CREATE	{ Lex->grant |= CREATE_ACL;}
	| DROP		{ Lex->grant |= DROP_ACL;}
	| EXECUTE_SYM	{ Lex->grant |= EXECUTE_ACL;}
	| RELOAD	{ Lex->grant |= RELOAD_ACL;}
	| SHUTDOWN	{ Lex->grant |= SHUTDOWN_ACL;}
	| PROCESS	{ Lex->grant |= PROCESS_ACL;}
	| FILE_SYM	{ Lex->grant |= FILE_ACL;}
	| 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; }
	| 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; }
	| CREATE ROUTINE_SYM { Lex->grant |= CREATE_PROC_ACL; }
	| ALTER ROUTINE_SYM { Lex->grant |= ALTER_PROC_ACL; }
	;


opt_and:
	/* empty */	{}
	| AND_SYM	{}
	;

require_list:
	 require_list_element opt_and require_list
	 | require_list_element
	 ;

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

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


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


grant_list:
	grant_user  { if (Lex->users_list.push_back($1)) YYABORT;}
	| grant_list ',' grant_user
	  {
	    if (Lex->users_list.push_back($3))
	      YYABORT;
	  }
	;


grant_user:
	user IDENTIFIED_SYM BY TEXT_STRING
	{
	   $$=$1; $1->password=$4;
	   if ($4.length)
	   {
             if (YYTHD->variables.old_passwords)
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
               if (buff)
                 make_scrambled_password_323(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH_323;
             }
             else
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
               if (buff)
                 make_scrambled_password(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH;
             }
	  }
	}
	| user IDENTIFIED_SYM BY PASSWORD TEXT_STRING
	  { $$=$1; $1->password=$5 ; }
	| user
	  { $$=$1; $1->password.str=NullS; }
        ;


opt_column_list:
	/* empty */
	{
	  LEX *lex=Lex;
	  lex->grant |= lex->which_columns;
	}
	| '(' column_list ')';

column_list:
	column_list ',' column_list_id
	| column_list_id;

column_list_id:
	ident
	{
	  String *new_str = new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info);
	  List_iterator <LEX_COLUMN> iter(Lex->columns);
	  class LEX_COLUMN *point;
	  LEX *lex=Lex;
	  while ((point=iter++))
	  {
	    if (!my_strcasecmp(system_charset_info,
                               point->column.ptr(), new_str->ptr()))
		break;
	  }
	  lex->grant_tot_col|= lex->which_columns;
	  if (point)
	    point->rights |= lex->which_columns;
	  else
	    lex->columns.push_back(new LEX_COLUMN (*new_str,lex->which_columns));
	}
        ;


require_clause: /* empty */
        | REQUIRE_SYM require_list
          {
            Lex->ssl_type=SSL_TYPE_SPECIFIED;
          }
        | REQUIRE_SYM SSL_SYM
          {
            Lex->ssl_type=SSL_TYPE_ANY;
          }
        | REQUIRE_SYM X509_SYM
          {
            Lex->ssl_type=SSL_TYPE_X509;
          }
	| REQUIRE_SYM NONE_SYM
	  {
	    Lex->ssl_type=SSL_TYPE_NONE;
	  }
          ;

grant_options:
	/* empty */ {}
	| WITH grant_option_list;

grant_option_list:
	grant_option_list grant_option {}
	| grant_option {}
        ;

grant_option:
	GRANT OPTION { Lex->grant |= GRANT_ACL;}
        | MAX_QUERIES_PER_HOUR ULONG_NUM
        {
	  Lex->mqh.questions=$2;
	  Lex->mqh.specified_limits|= USER_RESOURCES::QUERIES_PER_HOUR;
	}
        | MAX_UPDATES_PER_HOUR ULONG_NUM
        {
	  Lex->mqh.updates=$2;
	  Lex->mqh.specified_limits|= USER_RESOURCES::UPDATES_PER_HOUR;
	}
        | MAX_CONNECTIONS_PER_HOUR ULONG_NUM
        {
	  Lex->mqh.conn_per_hour= $2;
	  Lex->mqh.specified_limits|= USER_RESOURCES::CONNECTIONS_PER_HOUR;
	}
        | MAX_USER_CONNECTIONS_SYM ULONG_NUM
        {
          Lex->mqh.user_conn= $2;
          Lex->mqh.specified_limits|= USER_RESOURCES::USER_CONNECTIONS;
        }
        ;

begin:
	BEGIN_SYM   { Lex->sql_command = SQLCOM_BEGIN; Lex->start_transaction_opt= 0;} opt_work {}
	;

opt_work:
	/* empty */ {}
	| WORK_SYM {;}
        ;

opt_chain:
	/* empty */ { $$= (Lex->thd->variables.completion_type == 1); }
	| AND_SYM NO_SYM CHAIN_SYM	{ $$=0; }
	| AND_SYM CHAIN_SYM		{ $$=1; }
	;

opt_release:
	/* empty */ { $$= (Lex->thd->variables.completion_type == 2); }
	| RELEASE_SYM 			{ $$=1; }
	| NO_SYM RELEASE_SYM 		{ $$=0; }
	;
	
opt_work_and_chain:
	opt_work opt_chain 		{ $$=$2; }
	;

opt_savepoint:
	/* empty */	{}
	| SAVEPOINT_SYM {}
	;

commit:
	COMMIT_SYM opt_work_and_chain opt_release
	{
	  Lex->sql_command= SQLCOM_COMMIT;
	  Lex->tx_chain= $2; 
	  Lex->tx_release= $3;
	}
	;

rollback:
	ROLLBACK_SYM opt_work_and_chain opt_release
	{ 
	  Lex->sql_command= SQLCOM_ROLLBACK;
	  Lex->tx_chain= $2; 
	  Lex->tx_release= $3;
	}
	| ROLLBACK_SYM opt_work
	  TO_SYM opt_savepoint ident
	{
	  Lex->sql_command = SQLCOM_ROLLBACK_TO_SAVEPOINT;
	  Lex->savepoint_name = $5.str;
	}
	;

savepoint:
	SAVEPOINT_SYM ident
	{
	  Lex->sql_command = SQLCOM_SAVEPOINT;
	  Lex->savepoint_name = $2.str;
	}
	;

release:
	RELEASE_SYM SAVEPOINT_SYM ident
	{
	  Lex->sql_command = SQLCOM_RELEASE_SAVEPOINT;
	  Lex->savepoint_name = $3.str;
	}
	;

/*
   UNIONS : glue selects together
*/


union_clause:
	/* empty */ {}
	| union_list
	;

union_list:
	UNION_SYM union_option
	{
	  LEX *lex=Lex;
	  if (lex->exchange)
	  {
	    /* Only the last SELECT can have  INTO...... */
	    my_error(ER_WRONG_USAGE, MYF(0), "UNION", "INTO");
	    YYABORT;
	  }
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	  {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
	  }
	  if (mysql_new_select(lex, 0))
	    YYABORT;
          mysql_init_select(lex);
	  lex->current_select->linkage=UNION_TYPE;
          if ($2) /* UNION DISTINCT - remember position */
            lex->current_select->master_unit()->union_distinct=
                                                      lex->current_select;
	}
	select_init {}
	;

union_opt:
	union_list {}
	| optional_order_or_limit {}
	;

optional_order_or_limit:
	/* Empty */ {}
	|
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
	    DBUG_ASSERT(lex->current_select->linkage != GLOBAL_OPTIONS_TYPE);
	    SELECT_LEX *sel= lex->current_select;
	    SELECT_LEX_UNIT *unit= sel->master_unit();
	    SELECT_LEX *fake= unit->fake_select_lex;
	    if (fake)
	    {
	      unit->global_parameters= fake;
	      fake->no_table_names_allowed= 1;
	      lex->current_select= fake;
	    }
	    thd->where= "global ORDER clause";
	  }
	order_or_limit
          {
	    THD *thd= YYTHD;
	    thd->lex->current_select->no_table_names_allowed= 0;
	    thd->where= "";
          }
	;

order_or_limit:
	order_clause opt_limit_clause_init
	| limit_clause
	;

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

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

singlerow_subselect_init:
	select_init2
	{
	  $$= new Item_singlerow_subselect(Lex->current_select->
					   master_unit()->first_select());
	};

exists_subselect:
	subselect_start exists_subselect_init
	subselect_end
	{
	  $$= $2;
	};

exists_subselect_init:
	select_init2
	{
	  $$= new Item_exists_subselect(Lex->current_select->master_unit()->
					first_select());
	};

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

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

subselect_start:
	'(' SELECT_SYM
	{
	  LEX *lex=Lex;
	  if (((int)lex->sql_command >= (int)SQLCOM_HA_OPEN &&
	       lex->sql_command <= (int)SQLCOM_HA_READ) ||
	       lex->sql_command == (int)SQLCOM_KILL)
	  {
            yyerror(ER(ER_SYNTAX_ERROR));
	    YYABORT;
	  }
	  if (mysql_new_select(Lex, 1))
	    YYABORT;
	};

subselect_end:
	')'
	{
	  LEX *lex=Lex;
	  lex->current_select = lex->current_select->return_after_parsing();
	};

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; }
        ;