sql_yacc.yy 256 KB
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/* Copyright (C) 2000-2003 MySQL AB
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   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; version 2 of the License.
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   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

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

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

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#define yyoverflow(A,B,C,D,E,F) {ulong val= *(F); if (my_yyoverflow((B), (D), &val)) { yyerror((char*) (A)); return 2; } else { *(F)= (YYSIZE_T)val; }}
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#undef 	WARN_DEPRECATED			/* this macro is also defined in mysql_priv.h */
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#define WARN_DEPRECATED(A,B)                                        \
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  push_warning_printf(((THD *)yythd), MYSQL_ERROR::WARN_LEVEL_WARN, \
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		      ER_WARN_DEPRECATED_SYNTAX,                    \
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		      ER(ER_WARN_DEPRECATED_SYNTAX), (A), (B));
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#define MYSQL_YYABORT                         \
  do                                          \
  {                                           \
    LEX::cleanup_lex_after_parse_error(YYTHD);\
    YYABORT;                                  \
  } while (0)

#define MYSQL_YYABORT_UNLESS(A)         \
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  if (!(A))                             \
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  {                                     \
    my_parse_error(ER(ER_SYNTAX_ERROR));\
    MYSQL_YYABORT;                      \
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  }

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#ifndef DBUG_OFF
#define YYDEBUG 1
#else
#define YYDEBUG 0
#endif

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/**
  @brief Push an error message into MySQL error stack with line
  and position information.

  This function provides semantic action implementers with a way
  to push the famous "You have a syntax error near..." error
  message into the error stack, which is normally produced only if
  a parse error is discovered internally by the Bison generated
  parser.
*/

void my_parse_error(const char *s)
{
  THD *thd= current_thd;
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  Lex_input_stream *lip= thd->m_lip;
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  const char *yytext= lip->tok_start;
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  /* Push an error into the error stack */
  my_printf_error(ER_PARSE_ERROR,  ER(ER_PARSE_ERROR), MYF(0), s,
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                  (yytext ? yytext : ""),
                  lip->yylineno);
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}

/**
  @brief Bison callback to report a syntax/OOM error

  This function is invoked by the bison-generated parser
  when a syntax error, a parse error or an out-of-memory
  condition occurs. This function is not invoked when the
  parser is requested to abort by semantic action code
  by means of YYABORT or YYACCEPT macros. This is why these
  macros should not be used (use MYSQL_YYABORT/MYSQL_YYACCEPT
  instead).

  The parser will abort immediately after invoking this callback.

  This function is not for use in semantic actions and is internal to
  the parser, as it performs some pre-return cleanup. 
  In semantic actions, please use my_parse_error or my_error to
  push an error into the error stack and MYSQL_YYABORT
  to abort from the parser.
*/

void MYSQLerror(const char *s)
{
  THD *thd= current_thd;

  /*
    Restore the original LEX if it was replaced when parsing
    a stored procedure. We must ensure that a parsing error
    does not leave any side effects in the THD.
  */
  LEX::cleanup_lex_after_parse_error(thd);

  /* "parse error" changed into "syntax error" between bison 1.75 and 1.875 */
  if (strcmp(s,"parse error") == 0 || strcmp(s,"syntax error") == 0)
    s= ER(ER_SYNTAX_ERROR);
  my_parse_error(s);
}


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#ifndef DBUG_OFF
void turn_parser_debug_on()
{
  /*
     MYSQLdebug is in sql/sql_yacc.cc, in bison generated code.
     Turning this option on is **VERY** verbose, and should be
     used when investigating a syntax error problem only.

     The syntax to run with bison traces is as follows :
     - Starting a server manually :
       mysqld --debug="d,parser_debug" ...
     - Running a test :
       mysql-test-run.pl --mysqld="--debug=d,parser_debug" ...

     The result will be in the process stderr (var/log/master.err)
   */

  extern int yydebug;
  yydebug= 1;
}
#endif

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/**
  Helper action for a case statement (entering the CASE).
  This helper is used for both 'simple' and 'searched' cases.
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  This helper, with the other case_stmt_action_..., is executed when
  the following SQL code is parsed:
<pre>
CREATE PROCEDURE proc_19194_simple(i int)
BEGIN
  DECLARE str CHAR(10);

  CASE i
    WHEN 1 THEN SET str="1";
    WHEN 2 THEN SET str="2";
    WHEN 3 THEN SET str="3";
    ELSE SET str="unknown";
  END CASE;

  SELECT str;
END
</pre>
  The actions are used to generate the following code:
<pre>
SHOW PROCEDURE CODE proc_19194_simple;
Pos     Instruction
0       set str@1 NULL
1       set_case_expr (12) 0 i@0
2       jump_if_not 5(12) (case_expr@0 = 1)
3       set str@1 _latin1'1'
4       jump 12
5       jump_if_not 8(12) (case_expr@0 = 2)
6       set str@1 _latin1'2'
7       jump 12
8       jump_if_not 11(12) (case_expr@0 = 3)
9       set str@1 _latin1'3'
10      jump 12
11      set str@1 _latin1'unknown'
12      stmt 0 "SELECT str"
</pre>

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  @param lex the parser lex context
*/

void case_stmt_action_case(LEX *lex)
{
  lex->sphead->new_cont_backpatch(NULL);

  /*
    BACKPATCH: Creating target label for the jump to
    "case_stmt_action_end_case"
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    (Instruction 12 in the example)
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  */

  lex->spcont->push_label((char *)"", lex->sphead->instructions());
}

/**
  Helper action for a case expression statement (the expr in 'CASE expr').
  This helper is used for 'searched' cases only.
  @param lex the parser lex context
  @param expr the parsed expression
  @return 0 on success
*/

int case_stmt_action_expr(LEX *lex, Item* expr)
{
  sp_head *sp= lex->sphead;
  sp_pcontext *parsing_ctx= lex->spcont;
  int case_expr_id= parsing_ctx->register_case_expr();
  sp_instr_set_case_expr *i;

  if (parsing_ctx->push_case_expr_id(case_expr_id))
    return 1;

  i= new sp_instr_set_case_expr(sp->instructions(),
                                parsing_ctx, case_expr_id, expr, lex);

  sp->add_cont_backpatch(i);
  sp->add_instr(i);

  return 0;
}

/**
  Helper action for a case when condition.
  This helper is used for both 'simple' and 'searched' cases.
  @param lex the parser lex context
  @param when the parsed expression for the WHEN clause
  @param simple true for simple cases, false for searched cases
*/

void case_stmt_action_when(LEX *lex, Item *when, bool simple)
{
  sp_head *sp= lex->sphead;
  sp_pcontext *ctx= lex->spcont;
  uint ip= sp->instructions();
  sp_instr_jump_if_not *i;
  Item_case_expr *var;
  Item *expr;

  if (simple)
  {
    var= new Item_case_expr(ctx->get_current_case_expr_id());

#ifndef DBUG_OFF
    if (var)
    {
      var->m_sp= sp;
    }
#endif

    expr= new Item_func_eq(var, when);
    i= new sp_instr_jump_if_not(ip, ctx, expr, lex);
  }
  else
    i= new sp_instr_jump_if_not(ip, ctx, when, lex);

  /*
    BACKPATCH: Registering forward jump from
    "case_stmt_action_when" to "case_stmt_action_then"
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    (jump_if_not from instruction 2 to 5, 5 to 8 ... in the example)
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  */

  sp->push_backpatch(i, ctx->push_label((char *)"", 0));
  sp->add_cont_backpatch(i);
  sp->add_instr(i);
}

/**
  Helper action for a case then statements.
  This helper is used for both 'simple' and 'searched' cases.
  @param lex the parser lex context
*/

void case_stmt_action_then(LEX *lex)
{
  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);

  /*
    BACKPATCH: Resolving forward jump from
    "case_stmt_action_when" to "case_stmt_action_then"
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    (jump_if_not from instruction 2 to 5, 5 to 8 ... in the example)
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  */

  sp->backpatch(ctx->pop_label());

  /*
    BACKPATCH: Registering forward jump from
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    "case_stmt_action_then" to "case_stmt_action_end_case"
    (jump from instruction 4 to 12, 7 to 12 ... in the example)
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  */

  sp->push_backpatch(i, ctx->last_label());
}

/**
  Helper action for an end case.
  This helper is used for both 'simple' and 'searched' cases.
  @param lex the parser lex context
  @param simple true for simple cases, false for searched cases
*/

void case_stmt_action_end_case(LEX *lex, bool simple)
{
  /*
    BACKPATCH: Resolving forward jump from
    "case_stmt_action_then" to "case_stmt_action_end_case"
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    (jump from instruction 4 to 12, 7 to 12 ... in the example)
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  */
  lex->sphead->backpatch(lex->spcont->pop_label());

  if (simple)
    lex->spcont->pop_case_expr_id();

  lex->sphead->do_cont_backpatch();
}

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/**
  Helper to resolve the SQL:2003 Syntax exception 1) in <in predicate>.
  See SQL:2003, Part 2, section 8.4 <in predicate>, Note 184, page 383.
  This function returns the proper item for the SQL expression
  <code>left [NOT] IN ( expr )</code>
  @param thd the current thread
  @param left the in predicand
  @param equal true for IN predicates, false for NOT IN predicates
  @param expr first and only expression of the in value list
  @return an expression representing the IN predicate.
*/
Item* handle_sql2003_note184_exception(THD *thd, Item* left, bool equal,
                                       Item *expr)
{
  /*
    Relevant references for this issue:
    - SQL:2003, Part 2, section 8.4 <in predicate>, page 383,
    - SQL:2003, Part 2, section 7.2 <row value expression>, page 296,
    - SQL:2003, Part 2, section 6.3 <value expression primary>, page 174,
    - SQL:2003, Part 2, section 7.15 <subquery>, page 370,
    - SQL:2003 Feature F561, "Full value expressions".

    The exception in SQL:2003 Note 184 means:
    Item_singlerow_subselect, which corresponds to a <scalar subquery>,
    should be re-interpreted as an Item_in_subselect, which corresponds
    to a <table subquery> when used inside an <in predicate>.

    Our reading of Note 184 is reccursive, so that all:
    - IN (( <subquery> ))
    - IN ((( <subquery> )))
    - IN '('^N <subquery> ')'^N
    - etc
    should be interpreted as a <table subquery>, no matter how deep in the
    expression the <subquery> is.
  */

  Item *result;

  DBUG_ENTER("handle_sql2003_note184_exception");

  if (expr->type() == Item::SUBSELECT_ITEM)
  {
    Item_subselect *expr2 = (Item_subselect*) expr;

    if (expr2->substype() == Item_subselect::SINGLEROW_SUBS)
    {
      Item_singlerow_subselect *expr3 = (Item_singlerow_subselect*) expr2;
      st_select_lex *subselect;

      /*
        Implement the mandated change, by altering the semantic tree:
          left IN Item_singlerow_subselect(subselect)
        is modified to
          left IN (subselect)
        which is represented as
          Item_in_subselect(left, subselect)
      */
      subselect= expr3->invalidate_and_restore_select_lex();
      result= new (thd->mem_root) Item_in_subselect(left, subselect);

      if (! equal)
        result = negate_expression(thd, result);

      DBUG_RETURN(result);
    }
  }

  if (equal)
    result= new (thd->mem_root) Item_func_eq(left, expr);
  else
    result= new (thd->mem_root) Item_func_ne(left, expr);

  DBUG_RETURN(result);
}

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

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

%pure_parser					/* We have threads */
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/*
  Currently there is 251 shift/reduce conflict. We should not introduce
  new conflicts any more.
*/
%expect 251
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%token  END_OF_INPUT
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%token  ABORT_SYM
%token  ACTION
%token  ADD
%token  ADDDATE_SYM
%token  AFTER_SYM
%token  AGAINST
%token  AGGREGATE_SYM
%token  ALGORITHM_SYM
%token  ALL
%token  ALTER
%token  ANALYZE_SYM
%token  AND_AND_SYM
%token  AND_SYM
%token  ANY_SYM
%token  AS
%token  ASC
%token  ASCII_SYM
%token  ASENSITIVE_SYM
%token  ATAN
%token  AUTO_INC
%token  AVG_ROW_LENGTH
%token  AVG_SYM
%token  BACKUP_SYM
%token  BEFORE_SYM
%token  BEGIN_SYM
%token  BENCHMARK_SYM
%token  BERKELEY_DB_SYM
%token  BIGINT
%token  BINARY
%token  BINLOG_SYM
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%token  BIN_NUM
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%token  BIT_AND
%token  BIT_OR
%token  BIT_SYM
%token  BIT_XOR
%token  BLOB_SYM
%token  BOOLEAN_SYM
%token  BOOL_SYM
%token  BOTH
%token  BTREE_SYM
%token  BY
%token  BYTE_SYM
%token  CACHE_SYM
%token  CALL_SYM
%token  CASCADE
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%token  CASCADED
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%token  CAST_SYM
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%token  CHAIN_SYM
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%token  CHANGE
%token  CHANGED
%token  CHARSET
%token  CHAR_SYM
%token  CHECKSUM_SYM
%token  CHECK_SYM
%token  CIPHER_SYM
%token  CLIENT_SYM
%token  CLOSE_SYM
%token  COALESCE
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%token  CODE_SYM
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%token  COLLATE_SYM
%token  COLLATION_SYM
%token  COLUMNS
%token  COLUMN_SYM
%token  COMMENT_SYM
%token  COMMITTED_SYM
%token  COMMIT_SYM
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%token  COMPACT_SYM
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%token  COMPRESSED_SYM
%token  CONCAT
%token  CONCAT_WS
%token  CONCURRENT
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%token  CONDITION_SYM
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%token  CONNECTION_SYM
%token  CONSISTENT_SYM
%token  CONSTRAINT
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%token  CONTAINS_SYM
%token  CONTINUE_SYM
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%token  CONVERT_SYM
%token  CONVERT_TZ_SYM
%token  COUNT_SYM
%token  CREATE
%token  CROSS
%token  CUBE_SYM
%token  CURDATE
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%token  CURRENT_USER
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%token  CURSOR_SYM
%token  CURTIME
%token  DATABASE
%token  DATABASES
%token  DATA_SYM
%token  DATETIME
%token  DATE_ADD_INTERVAL
%token  DATE_SUB_INTERVAL
%token  DATE_SYM
%token  DAY_HOUR_SYM
%token  DAY_MICROSECOND_SYM
%token  DAY_MINUTE_SYM
%token  DAY_SECOND_SYM
%token  DAY_SYM
%token  DEALLOCATE_SYM
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%token  DECIMAL_NUM
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%token  DECIMAL_SYM
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%token  DECLARE_SYM
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%token  DECODE_SYM
%token  DEFAULT
%token  DEFINER_SYM
%token  DELAYED_SYM
%token  DELAY_KEY_WRITE_SYM
%token  DELETE_SYM
%token  DESC
%token  DESCRIBE
%token  DES_DECRYPT_SYM
%token  DES_ENCRYPT_SYM
%token  DES_KEY_FILE
%token  DETERMINISTIC_SYM
%token  DIRECTORY_SYM
%token  DISABLE_SYM
%token  DISCARD
%token  DISTINCT
%token  DIV_SYM
%token  DOUBLE_SYM
%token  DO_SYM
%token  DROP
%token  DUAL_SYM
%token  DUMPFILE
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%token  DUPLICATE_SYM
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%token  DYNAMIC_SYM
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%token  EACH_SYM
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%token  ELSEIF_SYM
%token  ELT_FUNC
%token  ENABLE_SYM
%token  ENCLOSED
%token  ENCODE_SYM
%token  ENCRYPT
%token  END
%token  ENGINES_SYM
%token  ENGINE_SYM
%token  ENUM
%token  EQ
%token  EQUAL_SYM
%token  ERRORS
%token  ESCAPED
%token  ESCAPE_SYM
%token  EVENTS_SYM
%token  EXECUTE_SYM
%token  EXISTS
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%token  EXIT_SYM
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%token  EXPANSION_SYM
%token  EXPORT_SET
%token  EXTENDED_SYM
%token  EXTRACT_SYM
%token  FALSE_SYM
%token  FAST_SYM
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%token  FETCH_SYM
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%token  FIELD_FUNC
%token  FILE_SYM
%token  FIRST_SYM
%token  FIXED_SYM
%token  FLOAT_NUM
%token  FLOAT_SYM
%token  FLUSH_SYM
%token  FORCE_SYM
%token  FOREIGN
%token  FORMAT_SYM
%token  FOR_SYM
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%token  FOUND_SYM
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%token  FRAC_SECOND_SYM
%token  FROM
%token  FROM_UNIXTIME
%token  FULL
%token  FULLTEXT_SYM
%token  FUNCTION_SYM
%token  FUNC_ARG0
%token  FUNC_ARG1
%token  FUNC_ARG2
%token  FUNC_ARG3
%token  GE
%token  GEOMCOLLFROMTEXT
%token  GEOMETRYCOLLECTION
%token  GEOMETRY_SYM
%token  GEOMFROMTEXT
%token  GEOMFROMWKB
%token  GET_FORMAT
%token  GLOBAL_SYM
%token  GRANT
%token  GRANTS
%token  GREATEST_SYM
%token  GROUP
%token  GROUP_CONCAT_SYM
%token  GROUP_UNIQUE_USERS
%token  GT_SYM
%token  HANDLER_SYM
%token  HASH_SYM
%token  HAVING
%token  HELP_SYM
%token  HEX_NUM
%token  HIGH_PRIORITY
%token  HOSTS_SYM
%token  HOUR_MICROSECOND_SYM
%token  HOUR_MINUTE_SYM
%token  HOUR_SECOND_SYM
%token  HOUR_SYM
%token  IDENT
%token  IDENTIFIED_SYM
%token  IDENT_QUOTED
%token  IF
%token  IGNORE_SYM
%token  IMPORT
%token  INDEXES
%token  INDEX_SYM
%token  INFILE
%token  INNER_SYM
%token  INNOBASE_SYM
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%token  INOUT_SYM
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%token  INSENSITIVE_SYM
%token  INSERT
%token  INSERT_METHOD
%token  INTERVAL_SYM
%token  INTO
%token  INT_SYM
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%token  INVOKER_SYM
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%token  IN_SYM
%token  IS
%token  ISOLATION
%token  ISSUER_SYM
%token  ITERATE_SYM
%token  JOIN_SYM
%token  KEYS
%token  KEY_SYM
%token  KILL_SYM
%token  LABEL_SYM
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%token  LANGUAGE_SYM
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%token  LAST_INSERT_ID
%token  LAST_SYM
%token  LE
%token  LEADING
%token  LEAST_SYM
%token  LEAVES
%token  LEAVE_SYM
%token  LEFT
%token  LEVEL_SYM
%token  LEX_HOSTNAME
%token  LIKE
%token  LIMIT
%token  LINEFROMTEXT
%token  LINES
%token  LINESTRING
%token  LOAD
%token  LOCAL_SYM
%token  LOCATE
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%token  LOCATOR_SYM
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%token  LOCKS_SYM
%token  LOCK_SYM
%token  LOGS_SYM
%token  LOG_SYM
%token  LONGBLOB
%token  LONGTEXT
%token  LONG_NUM
%token  LONG_SYM
%token  LOOP_SYM
%token  LOW_PRIORITY
%token  LT
%token  MAKE_SET_SYM
%token  MASTER_CONNECT_RETRY_SYM
%token  MASTER_HOST_SYM
%token  MASTER_LOG_FILE_SYM
%token  MASTER_LOG_POS_SYM
%token  MASTER_PASSWORD_SYM
%token  MASTER_PORT_SYM
%token  MASTER_POS_WAIT
%token  MASTER_SERVER_ID_SYM
%token  MASTER_SSL_CAPATH_SYM
%token  MASTER_SSL_CA_SYM
%token  MASTER_SSL_CERT_SYM
%token  MASTER_SSL_CIPHER_SYM
%token  MASTER_SSL_KEY_SYM
%token  MASTER_SSL_SYM
%token  MASTER_SYM
%token  MASTER_USER_SYM
%token  MATCH
%token  MAX_CONNECTIONS_PER_HOUR
%token  MAX_QUERIES_PER_HOUR
%token  MAX_ROWS
%token  MAX_SYM
%token  MAX_UPDATES_PER_HOUR
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%token  MAX_USER_CONNECTIONS_SYM
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%token  MEDIUMBLOB
%token  MEDIUMINT
%token  MEDIUMTEXT
%token  MEDIUM_SYM
%token  MERGE_SYM
%token  MICROSECOND_SYM
%token  MIGRATE_SYM
%token  MINUTE_MICROSECOND_SYM
%token  MINUTE_SECOND_SYM
%token  MINUTE_SYM
%token  MIN_ROWS
%token  MIN_SYM
%token  MLINEFROMTEXT
%token  MODE_SYM
%token  MODIFIES_SYM
%token  MODIFY_SYM
%token  MOD_SYM
%token  MONTH_SYM
%token  MPOINTFROMTEXT
%token  MPOLYFROMTEXT
%token  MULTILINESTRING
%token  MULTIPOINT
%token  MULTIPOLYGON
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%token  MUTEX_SYM
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%token  NAMES_SYM
%token  NAME_SYM
%token  NATIONAL_SYM
%token  NATURAL
%token  NCHAR_STRING
%token  NCHAR_SYM
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%token  NDBCLUSTER_SYM
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%token  NE
%token  NEW_SYM
%token  NEXT_SYM
%token  NONE_SYM
%token  NOT2_SYM
%token  NOT_SYM
%token  NOW_SYM
%token  NO_SYM
%token  NO_WRITE_TO_BINLOG
%token  NULL_SYM
%token  NUM
%token  NUMERIC_SYM
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%token  NVARCHAR_SYM
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%token  OFFSET_SYM
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%token  OJ_SYM
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%token  OLD_PASSWORD
%token  ON
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%token  ONE_SHOT_SYM
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%token  ONE_SYM
%token  OPEN_SYM
%token  OPTIMIZE
%token  OPTION
%token  OPTIONALLY
%token  OR2_SYM
%token  ORDER_SYM
%token  OR_OR_SYM
%token  OR_SYM
%token  OUTER
%token  OUTFILE
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%token  OUT_SYM
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%token  PACK_KEYS_SYM
%token  PARTIAL
%token  PASSWORD
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%token  PARAM_MARKER
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%token  PHASE_SYM
%token  POINTFROMTEXT
%token  POINT_SYM
%token  POLYFROMTEXT
%token  POLYGON
%token  POSITION_SYM
%token  PRECISION
%token  PREPARE_SYM
%token  PREV_SYM
%token  PRIMARY_SYM
%token  PRIVILEGES
%token  PROCEDURE
%token  PROCESS
%token  PROCESSLIST_SYM
%token  PURGE
%token  QUARTER_SYM
%token  QUERY_SYM
%token  QUICK
%token  RAID_0_SYM
%token  RAID_CHUNKS
%token  RAID_CHUNKSIZE
%token  RAID_STRIPED_SYM
%token  RAID_TYPE
%token  RAND
%token  READS_SYM
%token  READ_SYM
%token  REAL
%token  RECOVER_SYM
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%token  REDUNDANT_SYM
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%token  REFERENCES
%token  REGEXP
%token  RELAY_LOG_FILE_SYM
%token  RELAY_LOG_POS_SYM
%token  RELAY_THREAD
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%token  RELEASE_SYM
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%token  RELOAD
%token  RENAME
%token  REPAIR
%token  REPEATABLE_SYM
%token  REPEAT_SYM
%token  REPLACE
%token  REPLICATION
%token  REQUIRE_SYM
%token  RESET_SYM
%token  RESOURCES
%token  RESTORE_SYM
%token  RESTRICT
%token  RESUME_SYM
%token  RETURNS_SYM
%token  RETURN_SYM
%token  REVOKE
%token  RIGHT
%token  ROLLBACK_SYM
%token  ROLLUP_SYM
%token  ROUND
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%token  ROUTINE_SYM
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%token  ROWS_SYM
%token  ROW_COUNT_SYM
%token  ROW_FORMAT_SYM
%token  ROW_SYM
%token  RTREE_SYM
%token  SAVEPOINT_SYM
%token  SECOND_MICROSECOND_SYM
%token  SECOND_SYM
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%token  SECURITY_SYM
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%token  SELECT_SYM
%token  SENSITIVE_SYM
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%token  SEPARATOR_SYM
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%token  SERIALIZABLE_SYM
%token  SERIAL_SYM
%token  SESSION_SYM
%token  SET
%token  SET_VAR
%token  SHARE_SYM
%token  SHIFT_LEFT
%token  SHIFT_RIGHT
%token  SHOW
%token  SHUTDOWN
%token  SIGNED_SYM
%token  SIMPLE_SYM
%token  SLAVE
%token  SMALLINT
%token  SNAPSHOT_SYM
%token  SOUNDS_SYM
%token  SPATIAL_SYM
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%token  SPECIFIC_SYM
%token  SQLEXCEPTION_SYM
%token  SQLSTATE_SYM
%token  SQLWARNING_SYM
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%token  SQL_BIG_RESULT
%token  SQL_BUFFER_RESULT
%token  SQL_CACHE_SYM
%token  SQL_CALC_FOUND_ROWS
%token  SQL_NO_CACHE_SYM
%token  SQL_SMALL_RESULT
%token  SQL_SYM
%token  SQL_THREAD
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%token  SSL_SYM
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%token  STARTING
%token  START_SYM
%token  STATUS_SYM
%token  STD_SYM
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%token  STDDEV_SAMP_SYM
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%token  STOP_SYM
%token  STORAGE_SYM
%token  STRAIGHT_JOIN
%token  STRING_SYM
%token  SUBDATE_SYM
%token  SUBJECT_SYM
%token  SUBSTRING
%token  SUBSTRING_INDEX
%token  SUM_SYM
%token  SUPER_SYM
%token  SUSPEND_SYM
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%token  SYSDATE
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%token  TABLES
%token  TABLESPACE
%token  TABLE_SYM
%token  TEMPORARY
%token  TEMPTABLE_SYM
%token  TERMINATED
%token  TEXT_STRING
%token  TEXT_SYM
%token  TIMESTAMP
%token  TIMESTAMP_ADD
%token  TIMESTAMP_DIFF
%token  TIME_SYM
%token  TINYBLOB
%token  TINYINT
%token  TINYTEXT
%token  TO_SYM
%token  TRAILING
%token  TRANSACTION_SYM
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%token  TRIGGER_SYM
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%token  TRIGGERS_SYM
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%token  TRIM
%token  TRUE_SYM
%token  TRUNCATE_SYM
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%token  TYPES_SYM
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%token  TYPE_SYM
%token  UDF_RETURNS_SYM
%token  UDF_SONAME_SYM
%token  ULONGLONG_NUM
%token  UNCOMMITTED_SYM
%token  UNDEFINED_SYM
%token  UNDERSCORE_CHARSET
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%token  UNDO_SYM
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%token  UNICODE_SYM
%token  UNION_SYM
%token  UNIQUE_SYM
%token  UNIQUE_USERS
%token  UNIX_TIMESTAMP
%token  UNKNOWN_SYM
%token  UNLOCK_SYM
%token  UNSIGNED
%token  UNTIL_SYM
%token  UPDATE_SYM
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%token  UPGRADE_SYM
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%token  USAGE
%token  USER
%token  USE_FRM
%token  USE_SYM
%token  USING
%token  UTC_DATE_SYM
%token  UTC_TIMESTAMP_SYM
%token  UTC_TIME_SYM
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%token  VAR_SAMP_SYM
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%token  VALUES
%token  VALUE_SYM
%token  VARBINARY
%token  VARCHAR
%token  VARIABLES
%token  VARIANCE_SYM
%token  VARYING
%token  VIEW_SYM
%token  WARNINGS
%token  WEEK_SYM
%token  WHEN_SYM
%token  WHERE
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%token  WHILE_SYM
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%token  WITH
%token  WORK_SYM
%token  WRITE_SYM
%token  X509_SYM
%token  XA_SYM
%token  XOR
%token  YEARWEEK
%token  YEAR_MONTH_SYM
%token  YEAR_SYM
%token  ZEROFILL
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%left   JOIN_SYM INNER_SYM STRAIGHT_JOIN CROSS LEFT RIGHT
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/* A dummy token to force the priority of table_ref production in a join. */
%left   TABLE_REF_PRIORITY
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%left   SET_VAR
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%left	OR_OR_SYM OR_SYM OR2_SYM XOR
%left	AND_SYM AND_AND_SYM
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%left	BETWEEN_SYM CASE_SYM WHEN_SYM THEN_SYM ELSE
%left	EQ EQUAL_SYM GE GT_SYM LE LT NE IS LIKE REGEXP IN_SYM
%left	'|'
%left	'&'
%left	SHIFT_LEFT SHIFT_RIGHT
%left	'-' '+'
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%left	'*' '/' '%' DIV_SYM MOD_SYM
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%left   '^'
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%left	NEG '~'
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%right	NOT_SYM NOT2_SYM
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%right	BINARY COLLATE_SYM
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%type <lex_str>
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        IDENT IDENT_QUOTED TEXT_STRING DECIMAL_NUM FLOAT_NUM NUM LONG_NUM HEX_NUM
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	LEX_HOSTNAME ULONGLONG_NUM field_ident select_alias ident ident_or_text
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        UNDERSCORE_CHARSET IDENT_sys TEXT_STRING_sys TEXT_STRING_literal
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	NCHAR_STRING opt_component key_cache_name
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        sp_opt_label BIN_NUM label_ident TEXT_STRING_filesystem
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%type <lex_str_ptr>
	opt_table_alias

%type <table>
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	table_ident table_ident_nodb references xid
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%type <simple_string>
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	remember_name remember_end opt_ident opt_db text_or_password
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	opt_constraint constraint ident_or_empty
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%type <string>
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	text_string opt_gconcat_separator
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%type <num>
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	type int_type real_type order_dir lock_option
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	udf_type if_exists opt_local opt_table_options table_options
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        table_option opt_if_not_exists opt_no_write_to_binlog
        delete_option opt_temporary all_or_any opt_distinct
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        opt_ignore_leaves fulltext_options spatial_type union_option
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        start_transaction_opts opt_chain opt_release
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        union_opt select_derived_init option_type2
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%type <ulong_num>
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	ulong_num raid_types merge_insert_types
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%type <ulonglong_number>
	ulonglong_num
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%type <lock_type>
	replace_lock_option opt_low_priority insert_lock_option load_data_lock

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

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

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

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

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%type <interval_time_st> interval_time_st

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

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

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

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

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%type <select_lex> subselect subselect_init
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	get_select_lex
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%type <boolfunc2creator> comp_op

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

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


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

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

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deallocate_or_drop:
	DEALLOCATE_SYM |
	DROP
	;


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prepare:
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        PREPARE_SYM ident FROM prepare_src
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        {
          THD *thd=YYTHD;
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          LEX *lex= thd->lex;
          lex->sql_command= SQLCOM_PREPARE;
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          lex->prepared_stmt_name= $2;
        };

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

execute_using:
        /* nothing */
        | USING execute_var_list
        ;

execute_var_list:
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        execute_var_list ',' execute_var_ident
        | execute_var_ident
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        ;

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

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/* help */

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

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

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

/* create a table */

create:
	CREATE opt_table_options TABLE_SYM opt_if_not_exists table_ident
	{
	  THD *thd= YYTHD;
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_CREATE_TABLE;
	  if (!lex->select_lex.add_table_to_list(thd, $5, NULL,
						 TL_OPTION_UPDATING,
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						 TL_WRITE))
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	    MYSQL_YYABORT;
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          lex->alter_info.reset();
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	  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;
	}
	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))
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	      MYSQL_YYABORT;
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            lex->alter_info.reset();
            lex->alter_info.flags= ALTER_ADD_INDEX;
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	    lex->col_list.empty();
	    lex->change=NullS;
	  }
	   '(' key_list ')'
	  {
	    LEX *lex=Lex;
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            Key *key= new Key($2, $4.str, $5, 0, lex->col_list);
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            lex->alter_info.key_list.push_back(key);
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	    lex->col_list.empty();
	  }
	| CREATE DATABASE opt_if_not_exists ident
	  {
             Lex->create_info.default_table_charset= NULL;
             Lex->create_info.used_fields= 0;
          }
	  opt_create_database_options
	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_CREATE_DB;
	    lex->name=$4.str;
            lex->create_info.options=$3;
	  }
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	| CREATE
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	  {
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            Lex->create_view_mode= VIEW_CREATE_NEW;
            Lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED;
            Lex->create_view_suid= TRUE;
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	  }
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	  view_or_trigger_or_sp
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	  {}
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	| CREATE USER clear_privileges grant_list
	  {
	    Lex->sql_command = SQLCOM_CREATE_USER;
          }
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	;

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clear_privileges:
        /* Nothing */
        {
          LEX *lex=Lex;
          lex->users_list.empty();
          lex->columns.empty();
          lex->grant= lex->grant_tot_col= 0;
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	  lex->all_privileges= 0;
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          lex->select_lex.db= 0;
          lex->ssl_type= SSL_TYPE_NOT_SPECIFIED;
          lex->ssl_cipher= lex->x509_subject= lex->x509_issuer= 0;
          bzero((char *)&(lex->mqh),sizeof(lex->mqh));
        }
        ;

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sp_name:
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	  ident '.' ident
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	  {
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            if (!$1.str || check_db_name($1.str))
            {
	      my_error(ER_WRONG_DB_NAME, MYF(0), $1.str);
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	      MYSQL_YYABORT;
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	    }
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	    if (check_routine_name($3))
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            {
	      my_error(ER_SP_WRONG_NAME, MYF(0), $3.str);
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	      MYSQL_YYABORT;
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	    }
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	    $$= new sp_name($1, $3, true);
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	    $$->init_qname(YYTHD);
	  }
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	| ident
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	  {
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            LEX *lex= Lex;
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            LEX_STRING db;
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	    if (check_routine_name($1))
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            {
	      my_error(ER_SP_WRONG_NAME, MYF(0), $1.str);
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	      MYSQL_YYABORT;
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	    }
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            if (lex->copy_db_to(&db.str, &db.length))
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              MYSQL_YYABORT;
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	    $$= new sp_name(db, $1, false);
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            if ($$)
	      $$->init_qname(YYTHD);
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	  }
	;

create_function_tail:
	  RETURNS_SYM udf_type UDF_SONAME_SYM TEXT_STRING_sys
	  {
	    LEX *lex=Lex;
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            if (lex->definer != NULL)
            {
              /*
                 DEFINER is a concept meaningful when interpreting SQL code.
                 UDF functions are compiled.
                 Using DEFINER with UDF has therefore no semantic,
                 and is considered a parsing error.
              */
	      my_error(ER_WRONG_USAGE, MYF(0), "SONAME", "DEFINER");
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              MYSQL_YYABORT;
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            }
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	    lex->sql_command = SQLCOM_CREATE_FUNCTION;
	    lex->udf.name = lex->spname->m_name;
	    lex->udf.returns=(Item_result) $2;
	    lex->udf.dl=$4.str;
	  }
	| '('
	  {
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            THD *thd= YYTHD;
	    LEX *lex= thd->lex;
            Lex_input_stream *lip= thd->m_lip;
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	    sp_head *sp;

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            /* 
              First check if AGGREGATE was used, in that case it's a
              syntax error.
            */
            if (lex->udf.type == UDFTYPE_AGGREGATE)
            {
              my_error(ER_SP_NO_AGGREGATE, MYF(0));
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              MYSQL_YYABORT;
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            }

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	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "FUNCTION");
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	      MYSQL_YYABORT;
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	    }
	    /* Order is important here: new - reset - init */
	    sp= new sp_head();
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	    sp->reset_thd_mem_root(thd);
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	    sp->init(lex);
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            sp->init_sp_name(thd, lex->spname);
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	    sp->m_type= TYPE_ENUM_FUNCTION;
	    lex->sphead= sp;
	    /*
	     * We have to turn of CLIENT_MULTI_QUERIES while parsing a
	     * stored procedure, otherwise yylex will chop it into pieces
	     * at each ';'.
	     */
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	    sp->m_old_cmq= thd->client_capabilities & CLIENT_MULTI_QUERIES;
	    thd->client_capabilities &= ~CLIENT_MULTI_QUERIES;
	    lex->sphead->m_param_begin= lip->tok_start+1;
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	  }
          sp_fdparam_list ')'
	  {
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            THD *thd= YYTHD;
	    LEX *lex= thd->lex;
            Lex_input_stream *lip= thd->m_lip;
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	    lex->sphead->m_param_end= lip->tok_start;
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	  }
	  RETURNS_SYM
	  {
	    LEX *lex= Lex;
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	    lex->charset= NULL;
	    lex->length= lex->dec= NULL;
	    lex->interval_list.empty();
	    lex->type= 0;
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	  }
	  type
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
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            if (sp->fill_field_definition(YYTHD, lex,
                                          (enum enum_field_types) $8,
                                          &sp->m_return_field_def))
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              MYSQL_YYABORT;
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	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  }
	  sp_c_chistics
	  {
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            THD *thd= YYTHD;
	    LEX *lex= thd->lex;
            Lex_input_stream *lip= thd->m_lip;
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	    lex->sphead->m_chistics= &lex->sp_chistics;
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	    lex->sphead->m_body_begin= lip->tok_start;
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	  }
	  sp_proc_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;

1684
            if (sp->is_not_allowed_in_function("function"))
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              MYSQL_YYABORT;
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	    lex->sql_command= SQLCOM_CREATE_SPFUNCTION;
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	    sp->init_strings(YYTHD, lex);
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            if (!(sp->m_flags & sp_head::HAS_RETURN))
            {
              my_error(ER_SP_NORETURN, MYF(0), sp->m_qname.str);
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              MYSQL_YYABORT;
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            }
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	    /* Restore flag if it was cleared above */
	    if (sp->m_old_cmq)
	      YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
	    sp->restore_thd_mem_root(YYTHD);
	  }
	;

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

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

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

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

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

call:
	  CALL_SYM sp_name
	  {
	    LEX *lex = Lex;

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

/* CALL parameters */
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opt_sp_cparam_list:
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	  /* Empty */
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	| '(' opt_sp_cparams ')'
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	;

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opt_sp_cparams:
          /* Empty */
        | sp_cparams
        ;

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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
	;

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sp_init_param:
	  /* Empty */
	  {
	    LEX *lex= Lex;

	    lex->length= 0;
	    lex->dec= 0;
	    lex->type= 0;
	  
	    lex->default_value= 0;
	    lex->on_update_value= 0;
	  
	    lex->comment= null_lex_str;
	    lex->charset= NULL;
	  
	    lex->interval_list.empty();
	    lex->uint_geom_type= 0;
	  }
	;

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

1819
	    if (spc->find_variable(&$1, TRUE))
1820
	    {
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	      my_error(ER_SP_DUP_PARAM, MYF(0), $1.str);
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	      MYSQL_YYABORT;
1823
	    }
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            sp_variable_t *spvar= spc->push_variable(&$1,
                                                     (enum enum_field_types)$3,
                                                     sp_param_in);
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            if (lex->sphead->fill_field_definition(YYTHD, lex,
                                                   (enum enum_field_types) $3,
1830
                                                   &spvar->field_def))
1831
            {
1832
              MYSQL_YYABORT;
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            }
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            spvar->field_def.field_name= spvar->name.str;
            spvar->field_def.pack_flag |= FIELDFLAG_MAYBE_NULL;
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	  }
	;

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

sp_pdparams:
	  sp_pdparams ',' sp_pdparam
	| sp_pdparam
	;

sp_pdparam:
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	  sp_opt_inout sp_init_param ident type
1852 1853 1854 1855
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

1856
	    if (spc->find_variable(&$3, TRUE))
1857
	    {
1858
	      my_error(ER_SP_DUP_PARAM, MYF(0), $3.str);
1859
	      MYSQL_YYABORT;
1860
	    }
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            sp_variable_t *spvar= spc->push_variable(&$3,
                                                     (enum enum_field_types)$4,
                                                     (sp_param_mode_t)$1);
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            if (lex->sphead->fill_field_definition(YYTHD, lex,
                                                   (enum enum_field_types) $4,
1867
                                                   &spvar->field_def))
1868
            {
1869
              MYSQL_YYABORT;
1870
            }
1871 1872
            spvar->field_def.field_name= spvar->name.str;
            spvar->field_def.pack_flag |= FIELDFLAG_MAYBE_NULL;
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	  }
	;

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 */ {}
1885
	| sp_proc_stmts  sp_proc_stmt ';'
1886 1887 1888 1889
	;

sp_proc_stmts1:
	  sp_proc_stmt ';' {}
1890
	| sp_proc_stmts1  sp_proc_stmt ';'
1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905
	;

sp_decls:
	  /* Empty */
	  {
	    $$.vars= $$.conds= $$.hndlrs= $$.curs= 0;
	  }
	| sp_decls sp_decl ';'
	  {
	    /* We check for declarations out of (standard) order this way
	       because letting the grammar rules reflect it caused tricky
	       shift/reduce conflicts with the wrong result. (And we get
	       better error handling this way.) */
	    if (($2.vars || $2.conds) && ($1.curs || $1.hndlrs))
	    { /* Variable or condition following cursor or handler */
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1906 1907
	      my_message(ER_SP_VARCOND_AFTER_CURSHNDLR,
                         ER(ER_SP_VARCOND_AFTER_CURSHNDLR), MYF(0));
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	      MYSQL_YYABORT;
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	    }
	    if ($2.curs && $1.hndlrs)
	    { /* Cursor following handler */
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	      my_message(ER_SP_CURSOR_AFTER_HANDLER,
                         ER(ER_SP_CURSOR_AFTER_HANDLER), MYF(0));
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	      MYSQL_YYABORT;
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	    }
	    $$.vars= $1.vars + $2.vars;
	    $$.conds= $1.conds + $2.conds;
	    $$.hndlrs= $1.hndlrs + $2.hndlrs;
	    $$.curs= $1.curs + $2.curs;
	  }
	;

sp_decl:
1924
          DECLARE_SYM sp_decl_idents
1925
          {
1926
            LEX *lex= Lex;
1927

1928 1929 1930
            lex->sphead->reset_lex(YYTHD);
            lex->spcont->declare_var_boundary($2);
          }
1931
          type
1932
          sp_opt_default
1933 1934
          {
            LEX *lex= Lex;
1935
            sp_pcontext *pctx= lex->spcont;
1936
            uint num_vars= pctx->context_var_count();
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            enum enum_field_types var_type= (enum enum_field_types) $4;
            Item *dflt_value_item= $5;
            
            if (!dflt_value_item)
1941
            {
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              dflt_value_item= new Item_null();
              /* QQ Set to the var_type with null_value? */
            }
            
            for (uint i = num_vars-$2 ; i < num_vars ; i++)
            {
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              uint var_idx= pctx->var_context2runtime(i);
              sp_variable_t *spvar= pctx->find_variable(var_idx);
1950
            
1951
              if (!spvar)
1952
                MYSQL_YYABORT;
1953
            
1954 1955
              spvar->type= var_type;
              spvar->dflt= dflt_value_item;
1956 1957
            
              if (lex->sphead->fill_field_definition(YYTHD, lex, var_type,
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                                                     &spvar->field_def))
1959
              {
1960
                MYSQL_YYABORT;
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              }
            
1963 1964
              spvar->field_def.field_name= spvar->name.str;
              spvar->field_def.pack_flag |= FIELDFLAG_MAYBE_NULL;
1965 1966 1967 1968 1969 1970 1971
            
              /* The last instruction is responsible for freeing LEX. */

              lex->sphead->add_instr(
                new sp_instr_set(lex->sphead->instructions(), pctx, var_idx,
                                 dflt_value_item, var_type, lex,
                                 (i == num_vars - 1)));
1972
            }
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            pctx->declare_var_boundary(0);
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            lex->sphead->restore_lex(YYTHD);
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            $$.vars= $2;
            $$.conds= $$.hndlrs= $$.curs= 0;
          }
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	| DECLARE_SYM ident CONDITION_SYM FOR_SYM sp_cond
	  {
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

	    if (spc->find_cond(&$2, TRUE))
	    {
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	      my_error(ER_SP_DUP_COND, MYF(0), $2.str);
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	      MYSQL_YYABORT;
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	    }
	    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;
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            lex->spcont= lex->spcont->push_context(LABEL_HANDLER_SCOPE);

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	    sp_pcontext *ctx= lex->spcont;
	    sp_instr_hpush_jump *i=
              new sp_instr_hpush_jump(sp->instructions(), ctx, $2,
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	                              ctx->current_var_count());
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	    sp->add_instr(i);
	    sp->push_backpatch(i, ctx->push_label((char *)"", 0));
	  }
	  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,
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	                              ctx->current_var_count());
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	      sp->add_instr(i);
	    }
	    else
	    {  /* EXIT or UNDO handler, just jump to the end of the block */
	      i= new sp_instr_hreturn(sp->instructions(), ctx, 0);

	      sp->add_instr(i);
	      sp->push_backpatch(i, lex->spcont->last_label()); /* Block end */
	    }
	    lex->sphead->backpatch(hlab);
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            lex->spcont= ctx->pop_context();

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	    $$.vars= $$.conds= $$.curs= 0;
	    $$.hndlrs= $6;
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	    lex->spcont->add_handlers($6);
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	  }
	| DECLARE_SYM ident CURSOR_SYM FOR_SYM sp_cursor_stmt
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    uint offp;
	    sp_instr_cpush *i;

	    if (ctx->find_cursor(&$2, &offp, TRUE))
	    {
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	      my_error(ER_SP_DUP_CURS, MYF(0), $2.str);
2049
	      delete $5;
2050
	      MYSQL_YYABORT;
2051
	    }
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2052
            i= new sp_instr_cpush(sp->instructions(), ctx, $5,
2053
                                  ctx->current_cursor_count());
2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075
	    sp->add_instr(i);
	    ctx->push_cursor(&$2);
	    $$.vars= $$.conds= $$.hndlrs= 0;
	    $$.curs= 1;
	  }
	;

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

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

	    if (lex->sql_command != SQLCOM_SELECT)
	    {
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2076 2077
	      my_message(ER_SP_BAD_CURSOR_QUERY, ER(ER_SP_BAD_CURSOR_QUERY),
                         MYF(0));
2078
	      MYSQL_YYABORT;
2079 2080 2081
	    }
	    if (lex->result)
	    {
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2082 2083
	      my_message(ER_SP_BAD_CURSOR_SELECT, ER(ER_SP_BAD_CURSOR_SELECT),
                         MYF(0));
2084
	      MYSQL_YYABORT;
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	    }
	    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:
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          sp_hcond_element
          { $$= 1; }
        | sp_hcond_list ',' sp_hcond_element
          { $$+= 1; }
        ;

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

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

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

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

sp_decl_idents:
	  ident
	  {
2188 2189
            /* NOTE: field definition is filled in sp_decl section. */

2190 2191 2192
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

2193
	    if (spc->find_variable(&$1, TRUE))
2194
	    {
2195
	      my_error(ER_SP_DUP_VAR, MYF(0), $1.str);
2196
	      MYSQL_YYABORT;
2197
	    }
2198
	    spc->push_variable(&$1, (enum_field_types)0, sp_param_in);
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	    $$= 1;
	  }
	| sp_decl_idents ',' ident
	  {
2203 2204
            /* NOTE: field definition is filled in sp_decl section. */

2205 2206 2207
	    LEX *lex= Lex;
	    sp_pcontext *spc= lex->spcont;

2208
	    if (spc->find_variable(&$3, TRUE))
2209
	    {
2210
	      my_error(ER_SP_DUP_VAR, MYF(0), $3.str);
2211
	      MYSQL_YYABORT;
2212
	    }
2213
	    spc->push_variable(&$3, (enum_field_types)0, sp_param_in);
2214 2215 2216 2217 2218 2219 2220 2221 2222 2223 2224
	    $$= $1 + 1;
	  }
	;

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

sp_proc_stmt:
	  {
2225 2226 2227
            THD *thd= YYTHD;
	    LEX *lex= thd->lex;
            Lex_input_stream *lip= thd->m_lip;
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2229 2230
	    lex->sphead->reset_lex(thd);
	    lex->sphead->m_tmp_query= lip->tok_start;
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	  }
	  statement
	  {
2234 2235 2236
            THD *thd= YYTHD;
	    LEX *lex= thd->lex;
            Lex_input_stream *lip= thd->m_lip;
2237 2238
	    sp_head *sp= lex->sphead;

2239
            sp->m_flags|= sp_get_flags_for_command(lex);
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	    if (lex->sql_command == SQLCOM_CHANGE_DB)
	    { /* "USE db" doesn't work in a procedure */
2242
	      my_error(ER_SP_BADSTATEMENT, MYF(0), "USE");
2243
	      MYSQL_YYABORT;
2244
	    }
2245 2246 2247 2248
	    /*
              Don't add an instruction for SET statements, since all
              instructions for them were already added during processing
              of "set" rule.
2249
	    */
2250 2251 2252
            DBUG_ASSERT(lex->sql_command != SQLCOM_SET_OPTION ||
                        lex->var_list.is_empty());
            if (lex->sql_command != SQLCOM_SET_OPTION)
2253
	    {
2254 2255
              sp_instr_stmt *i=new sp_instr_stmt(sp->instructions(),
                                                 lex->spcont, lex);
2256

2257 2258 2259 2260 2261 2262
              /*
                Extract the query statement from the tokenizer.  The
                end is either lex->ptr, if there was no lookahead,
                lex->tok_end otherwise.
              */
              if (yychar == YYEMPTY)
2263
                i->m_query.length= lip->ptr - sp->m_tmp_query;
2264
              else
2265 2266 2267
                i->m_query.length= lip->tok_end - sp->m_tmp_query;
              i->m_query.str= strmake_root(thd->mem_root,
                                           sp->m_tmp_query,
2268 2269
                                           i->m_query.length);
              sp->add_instr(i);
2270
            }
2271
	    sp->restore_lex(thd);
2272
          }
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          | RETURN_SYM 
          { Lex->sphead->reset_lex(YYTHD); }
          expr
2276 2277
	  {
	    LEX *lex= Lex;
2278
	    sp_head *sp= lex->sphead;
2279

2280
	    if (sp->m_type != TYPE_ENUM_FUNCTION)
2281
	    {
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2282
	      my_message(ER_SP_BADRETURN, ER(ER_SP_BADRETURN), MYF(0));
2283
	      MYSQL_YYABORT;
2284 2285 2286 2287 2288
	    }
	    else
	    {
	      sp_instr_freturn *i;

2289 2290
	      i= new sp_instr_freturn(sp->instructions(), lex->spcont, $3,
                                      sp->m_return_field_def.sql_type, lex);
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	      sp->add_instr(i);
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	      sp->m_flags|= sp_head::HAS_RETURN;
2293
	    }
2294
	    sp->restore_lex(YYTHD);
2295
	  }
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        | IF
          { Lex->sphead->new_cont_backpatch(NULL); }
          sp_if END IF
          { Lex->sphead->do_cont_backpatch(); }
2300
        | case_stmt_specification
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	| 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());
	  }
2314
	| LEAVE_SYM label_ident
2315 2316 2317 2318 2319 2320 2321 2322
	  {
	    LEX *lex= Lex;
	    sp_head *sp = lex->sphead;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($2.str);

	    if (! lab)
	    {
2323
	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "LEAVE", $2.str);
2324
	      MYSQL_YYABORT;
2325 2326 2327 2328
	    }
	    else
	    {
	      sp_instr_jump *i;
2329 2330 2331
	      uint ip= sp->instructions();
	      uint n;

2332
	      n= ctx->diff_handlers(lab->ctx, TRUE);  /* Exclusive the dest. */
2333 2334
	      if (n)
	        sp->add_instr(new sp_instr_hpop(ip++, ctx, n));
2335
	      n= ctx->diff_cursors(lab->ctx, TRUE);  /* Exclusive the dest. */
2336 2337
	      if (n)
	        sp->add_instr(new sp_instr_cpop(ip++, ctx, n));
2338 2339 2340 2341 2342
	      i= new sp_instr_jump(ip, ctx);
	      sp->push_backpatch(i, lab);  /* Jumping forward */
              sp->add_instr(i);
	    }
	  }
2343
	| ITERATE_SYM label_ident
2344 2345 2346 2347 2348 2349 2350 2351
	  {
	    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)
	    {
2352
	      my_error(ER_SP_LILABEL_MISMATCH, MYF(0), "ITERATE", $2.str);
2353
	      MYSQL_YYABORT;
2354 2355 2356 2357 2358 2359 2360
	    }
	    else
	    {
	      sp_instr_jump *i;
	      uint ip= sp->instructions();
	      uint n;

2361
	      n= ctx->diff_handlers(lab->ctx, FALSE);  /* Inclusive the dest. */
2362 2363
	      if (n)
	        sp->add_instr(new sp_instr_hpop(ip++, ctx, n));
2364
	      n= ctx->diff_cursors(lab->ctx, FALSE);  /* Inclusive the dest. */
2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 2378 2379
	      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);
	    }
	  }
	| OPEN_SYM ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    uint offset;
	    sp_instr_copen *i;

	    if (! lex->spcont->find_cursor(&$2, &offset))
	    {
2380
	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
2381
	      MYSQL_YYABORT;
2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394
	    }
	    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))
	    {
2395
	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $3.str);
2396
	      MYSQL_YYABORT;
2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411
	    }
	    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))
	    {
2412
	      my_error(ER_SP_CURSOR_MISMATCH, MYF(0), $2.str);
2413
	      MYSQL_YYABORT;
2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431
	    }
	    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;
2432
	    sp_variable_t *spv;
2433

2434
	    if (!spc || !(spv = spc->find_variable(&$1)))
2435
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
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	      MYSQL_YYABORT;
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	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	    }
	  }
	|
	  sp_fetch_list ',' ident
	  {
	    LEX *lex= Lex;
	    sp_head *sp= lex->sphead;
	    sp_pcontext *spc= lex->spcont;
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	    sp_variable_t *spv;
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	    if (!spc || !(spv = spc->find_variable(&$3)))
2456
	    {
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	      my_error(ER_SP_UNDECLARED_VAR, MYF(0), $3.str);
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	      MYSQL_YYABORT;
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	    }
	    else
	    {
	      /* An SP local variable */
	      sp_instr_cfetch *i= (sp_instr_cfetch *)sp->last_instruction();

	      i->add_to_varlist(spv);
	    }
	  }
	;

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

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

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

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

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case_stmt_specification:
          simple_case_stmt
        | searched_case_stmt
        ;
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simple_case_stmt:
          CASE_SYM
          {
            LEX *lex= Lex;
            case_stmt_action_case(lex);
            lex->sphead->reset_lex(YYTHD); /* For expr $3 */
          }
          expr
          {
            LEX *lex= Lex;
            if (case_stmt_action_expr(lex, $3))
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              MYSQL_YYABORT;
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            lex->sphead->restore_lex(YYTHD); /* For expr $3 */
          }
          simple_when_clause_list
          else_clause_opt
          END
          CASE_SYM
          {
            LEX *lex= Lex;
            case_stmt_action_end_case(lex, true);
          }
        ;
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searched_case_stmt:
          CASE_SYM
          {
            LEX *lex= Lex;
            case_stmt_action_case(lex);
          }
          searched_when_clause_list
          else_clause_opt
          END
          CASE_SYM
          {
            LEX *lex= Lex;
            case_stmt_action_end_case(lex, false);
          }
        ;
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simple_when_clause_list:
          simple_when_clause
        | simple_when_clause_list simple_when_clause
        ;
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searched_when_clause_list:
          searched_when_clause
        | searched_when_clause_list searched_when_clause
        ;
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simple_when_clause:
          WHEN_SYM
          {
            Lex->sphead->reset_lex(YYTHD); /* For expr $3 */
          }
          expr
          {
            /* Simple case: <caseval> = <whenval> */
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            LEX *lex= Lex;
            case_stmt_action_when(lex, $3, true);
            lex->sphead->restore_lex(YYTHD); /* For expr $3 */
          }
          THEN_SYM
          sp_proc_stmts1
          {
            LEX *lex= Lex;
            case_stmt_action_then(lex);
          }
        ;
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searched_when_clause:
          WHEN_SYM
          {
            Lex->sphead->reset_lex(YYTHD); /* For expr $3 */
          }
          expr
          {
            LEX *lex= Lex;
            case_stmt_action_when(lex, $3, false);
            lex->sphead->restore_lex(YYTHD); /* For expr $3 */
          }
          THEN_SYM
          sp_proc_stmts1
          {
            LEX *lex= Lex;
            case_stmt_action_then(lex);
          }
        ;
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else_clause_opt:
          /* empty */
          {
            LEX *lex= Lex;
            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
        ;
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sp_labeled_control:
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	  label_ident ':'
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	  {
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	    LEX *lex= Lex;
	    sp_pcontext *ctx= lex->spcont;
	    sp_label_t *lab= ctx->find_label($1.str);

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

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

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

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

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

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

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

	    lex->sphead->add_instr(i);
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            lex->sphead->do_cont_backpatch();
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	  }
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        | REPEAT_SYM sp_proc_stmts1 UNTIL_SYM 
          { Lex->sphead->reset_lex(YYTHD); }
          expr END REPEAT_SYM
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	  {
	    LEX *lex= Lex;
	    uint ip= lex->sphead->instructions();
	    sp_label_t *lab= lex->spcont->last_label();  /* Jumping back */
	    sp_instr_jump_if_not *i = new sp_instr_jump_if_not(ip, lex->spcont,
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                                                               $5, lab->ip,
                                                               lex);
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            lex->sphead->add_instr(i);
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            lex->sphead->restore_lex(YYTHD);
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            /* We can shortcut the cont_backpatch here */
            i->m_cont_dest= ip+1;
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	  }
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	;

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

trg_event:
            INSERT 
            { Lex->trg_chistics.event= TRG_EVENT_INSERT; }
          | UPDATE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_UPDATE; }
          | DELETE_SYM
            { Lex->trg_chistics.event= TRG_EVENT_DELETE; }
2758
          ;
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create2:
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        '(' create2a {}
        | opt_create_table_options create3 {}
        | LIKE table_ident
          {
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            Lex->create_info.options|= HA_LEX_CREATE_TABLE_LIKE;
            if (!Lex->select_lex.add_table_to_list(YYTHD, $2, NULL, 0, TL_READ))
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              MYSQL_YYABORT;
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          }
        | '(' LIKE table_ident ')'
          {
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            Lex->create_info.options|= HA_LEX_CREATE_TABLE_LIKE;
            if (!Lex->select_lex.add_table_to_list(YYTHD, $3, NULL, 0, TL_READ))
2773
              MYSQL_YYABORT;
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          }
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        ;
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create2a:
        field_list ')' opt_create_table_options create3 {}
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	|  create_select ')' { Select->set_braces(1);} union_opt {}
2780
        ;
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create3:
2783
	/* empty */ {}
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	| opt_duplicate opt_as     create_select
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          { Select->set_braces(0);} union_clause {}
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	| opt_duplicate opt_as '(' create_select ')'
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          { Select->set_braces(1);} union_opt {}
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        ;

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create_select:
2791
          SELECT_SYM
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          {
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	    LEX *lex=Lex;
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	    lex->lock_option= using_update_log ? TL_READ_NO_INSERT : TL_READ;
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	    if (lex->sql_command == SQLCOM_INSERT)
	      lex->sql_command= SQLCOM_INSERT_SELECT;
	    else if (lex->sql_command == SQLCOM_REPLACE)
	      lex->sql_command= SQLCOM_REPLACE_SELECT;
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	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
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	    lex->current_select->table_list.save_and_clear(&lex->save_list);
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	    mysql_init_select(lex);
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	    lex->current_select->parsing_place= SELECT_LIST;
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          }
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          select_options select_item_list
	  {
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	    Select->parsing_place= NO_MATTER;
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	  }
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	  opt_select_from
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	  {
	    /*
              The following work only with the local list, the global list
              is created correctly in this case
	    */
	    Lex->current_select->table_list.push_front(&Lex->save_list);
	  }
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        ;
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opt_as:
	/* empty */ {}
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	| AS	    {};
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opt_create_database_options:
	/* empty */			{}
	| create_database_options	{};

create_database_options:
	create_database_option					{}
	| create_database_options create_database_option	{};

create_database_option:
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	default_collation   {}
	| default_charset   {};
2836

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opt_table_options:
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	/* empty */	 { $$= 0; }
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	| table_options  { $$= $1;};
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table_options:
	table_option	{ $$=$1; }
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	| table_option table_options { $$= $1 | $2; };
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table_option:
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	TEMPORARY	{ $$=HA_LEX_CREATE_TMP_TABLE; };
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opt_if_not_exists:
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	/* empty */	 { $$= 0; }
2850
	| IF not EXISTS	 { $$=HA_LEX_CREATE_IF_NOT_EXISTS; };
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opt_create_table_options:
	/* empty */
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	| create_table_options;
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create_table_options_space_separated:
	create_table_option
	| create_table_option create_table_options_space_separated;

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create_table_options:
	create_table_option
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	| create_table_option     create_table_options
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	| create_table_option ',' create_table_options;
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create_table_option:
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	ENGINE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE; }
	| TYPE_SYM opt_equal storage_engines    { Lex->create_info.db_type= $3; WARN_DEPRECATED("TYPE=storage_engine","ENGINE=storage_engine");   Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE; }
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	| MAX_ROWS opt_equal ulonglong_num	{ Lex->create_info.max_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MAX_ROWS;}
	| MIN_ROWS opt_equal ulonglong_num	{ Lex->create_info.min_rows= $3; Lex->create_info.used_fields|= HA_CREATE_USED_MIN_ROWS;}
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	| AVG_ROW_LENGTH opt_equal ulong_num	{ Lex->create_info.avg_row_length=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AVG_ROW_LENGTH;}
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	| PASSWORD opt_equal TEXT_STRING_sys	{ Lex->create_info.password=$3.str; Lex->create_info.used_fields|= HA_CREATE_USED_PASSWORD; }
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	| COMMENT_SYM opt_equal TEXT_STRING_sys	{ Lex->create_info.comment=$3; Lex->create_info.used_fields|= HA_CREATE_USED_COMMENT; }
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	| AUTO_INC opt_equal ulonglong_num	{ Lex->create_info.auto_increment_value=$3; Lex->create_info.used_fields|= HA_CREATE_USED_AUTO;}
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        | PACK_KEYS_SYM opt_equal ulong_num
          {
            switch($3) {
            case 0:
                Lex->create_info.table_options|= HA_OPTION_NO_PACK_KEYS;
                break;
            case 1:
                Lex->create_info.table_options|= HA_OPTION_PACK_KEYS;
                break;
            default:
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                my_parse_error(ER(ER_SYNTAX_ERROR));
                MYSQL_YYABORT;
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            }
            Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;
          }
        | PACK_KEYS_SYM opt_equal DEFAULT
          {
            Lex->create_info.table_options&=
              ~(HA_OPTION_PACK_KEYS | HA_OPTION_NO_PACK_KEYS);
            Lex->create_info.used_fields|= HA_CREATE_USED_PACK_KEYS;
          }
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	| CHECKSUM_SYM opt_equal ulong_num	{ Lex->create_info.table_options|= $3 ? HA_OPTION_CHECKSUM : HA_OPTION_NO_CHECKSUM; Lex->create_info.used_fields|= HA_CREATE_USED_CHECKSUM; }
	| DELAY_KEY_WRITE_SYM opt_equal ulong_num { Lex->create_info.table_options|= $3 ? HA_OPTION_DELAY_KEY_WRITE : HA_OPTION_NO_DELAY_KEY_WRITE;  Lex->create_info.used_fields|= HA_CREATE_USED_DELAY_KEY_WRITE; }
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	| ROW_FORMAT_SYM opt_equal row_types	{ Lex->create_info.row_type= $3;  Lex->create_info.used_fields|= HA_CREATE_USED_ROW_FORMAT; }
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	| RAID_TYPE opt_equal raid_types
	  {
	    my_error(ER_WARN_DEPRECATED_SYNTAX, MYF(0), "RAID_TYPE", "PARTITION");
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	    MYSQL_YYABORT;
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	  }
	| RAID_CHUNKS opt_equal ulong_num
	  {
	    my_error(ER_WARN_DEPRECATED_SYNTAX, MYF(0), "RAID_CHUNKS", "PARTITION");
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	    MYSQL_YYABORT;
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	  }
	| RAID_CHUNKSIZE opt_equal ulong_num
	  {
	    my_error(ER_WARN_DEPRECATED_SYNTAX, MYF(0), "RAID_CHUNKSIZE", "PARTITION");
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	    MYSQL_YYABORT;
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	  }
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	| UNION_SYM opt_equal '(' table_list ')'
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	  {
	    /* Move the union list to the merge_list */
	    LEX *lex=Lex;
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	    TABLE_LIST *table_list= lex->select_lex.get_table_list();
	    lex->create_info.merge_list= lex->select_lex.table_list;
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	    lex->create_info.merge_list.elements--;
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	    lex->create_info.merge_list.first=
	      (byte*) (table_list->next_local);
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	    lex->select_lex.table_list.elements=1;
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	    lex->select_lex.table_list.next=
	      (byte**) &(table_list->next_local);
	    table_list->next_local= 0;
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	    lex->create_info.used_fields|= HA_CREATE_USED_UNION;
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	  }
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	| default_charset
	| default_collation
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	| INSERT_METHOD opt_equal merge_insert_types   { Lex->create_info.merge_insert_method= $3; Lex->create_info.used_fields|= HA_CREATE_USED_INSERT_METHOD;}
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	| DATA_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.data_file_name= $4.str; Lex->create_info.used_fields|= HA_CREATE_USED_DATADIR; }
	| INDEX_SYM DIRECTORY_SYM opt_equal TEXT_STRING_sys { Lex->create_info.index_file_name= $4.str;  Lex->create_info.used_fields|= HA_CREATE_USED_INDEXDIR; }
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	| CONNECTION_SYM opt_equal TEXT_STRING_sys { Lex->create_info.connect_string.str= $3.str; Lex->create_info.connect_string.length= $3.length;  Lex->create_info.used_fields|= HA_CREATE_USED_CONNECTION; }
2934
        ;
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default_charset:
        opt_default charset opt_equal charset_name_or_default
        {
          HA_CREATE_INFO *cinfo= &Lex->create_info;
          if ((cinfo->used_fields & HA_CREATE_USED_DEFAULT_CHARSET) &&
               cinfo->default_table_charset && $4 &&
               !my_charset_same(cinfo->default_table_charset,$4))
          {
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            my_error(ER_CONFLICTING_DECLARATIONS, MYF(0),
                     "CHARACTER SET ", cinfo->default_table_charset->csname,
                     "CHARACTER SET ", $4->csname);
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            MYSQL_YYABORT;
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          }
	  Lex->create_info.default_table_charset= $4;
          Lex->create_info.used_fields|= HA_CREATE_USED_DEFAULT_CHARSET;
        };

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

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

column_def:
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	  field_spec opt_check_constraint
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	| field_spec references
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	;
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key_def:
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	key_type opt_ident key_alg '(' key_list ')'
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	  {
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	    LEX *lex=Lex;
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            Key *key= new Key($1, $2, $3, 0, lex->col_list);
            lex->alter_info.key_list.push_back(key);

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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| opt_constraint constraint_key_type opt_ident key_alg '(' key_list ')'
	  {
	    LEX *lex=Lex;
	    const char *key_name= $3 ? $3:$1;
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            Key *key= new Key($2, key_name, $4, 0, lex->col_list);
            lex->alter_info.key_list.push_back(key);
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	| opt_constraint FOREIGN KEY_SYM opt_ident '(' key_list ')' references
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	  {
3048
	    LEX *lex=Lex;
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            const char *key_name= $4 ? $4 : $1;
            Key *key= new foreign_key(key_name, lex->col_list,
                                      $8,
                                      lex->ref_list,
                                      lex->fk_delete_opt,
                                      lex->fk_update_opt,
                                      lex->fk_match_option);
            lex->alter_info.key_list.push_back(key);
            key= new Key(Key::MULTIPLE, key_name,
                         HA_KEY_ALG_UNDEF, 1,
                         lex->col_list);
            lex->alter_info.key_list.push_back(key);
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	    lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
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	| constraint opt_check_constraint
	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
	  }
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	| opt_constraint check_constraint
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	  {
	    Lex->col_list.empty();		/* Alloced by sql_alloc */
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	  }
	;

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opt_check_constraint:
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	/* empty */
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	| check_constraint
	;

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

constraint:
	CONSTRAINT opt_ident	{ $$=$2; }
	;
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field_spec:
	field_ident
	 {
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	   LEX *lex=Lex;
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	   lex->length=lex->dec=0; lex->type=0;
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	   lex->default_value= lex->on_update_value= 0;
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           lex->comment=null_lex_str;
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	   lex->charset=NULL;
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	 }
	type opt_attribute
	{
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	  LEX *lex=Lex;
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	  if (add_field_to_list(lex->thd, $1.str,
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				(enum enum_field_types) $3,
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				lex->length,lex->dec,lex->type,
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				lex->default_value, lex->on_update_value, 
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                                &lex->comment,
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				lex->change,&lex->interval_list,lex->charset,
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				lex->uint_geom_type))
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	    MYSQL_YYABORT;
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	};
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type:
3114
	int_type opt_len field_options	{ $$=$1; }
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	| real_type opt_precision field_options { $$=$1; }
	| FLOAT_SYM float_options field_options { $$=FIELD_TYPE_FLOAT; }
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	| BIT_SYM			{ Lex->length= (char*) "1";
					  $$=FIELD_TYPE_BIT; }
	| BIT_SYM '(' NUM ')'		{ Lex->length= $3.str;
					  $$=FIELD_TYPE_BIT; }
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	| BOOL_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| BOOLEAN_SYM			{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_TINY; }
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	| char '(' NUM ')' opt_binary	{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING; }
	| char opt_binary		{ Lex->length=(char*) "1";
					  $$=FIELD_TYPE_STRING; }
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	| nchar '(' NUM ')' opt_bin_mod	{ Lex->length=$3.str;
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| nchar opt_bin_mod		{ Lex->length=(char*) "1";
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					  $$=FIELD_TYPE_STRING;
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					  Lex->charset=national_charset_info; }
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	| BINARY '(' NUM ')'		{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_STRING; }
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	| BINARY			{ Lex->length= (char*) "1";
					  Lex->charset=&my_charset_bin;
					  $$=FIELD_TYPE_STRING; }
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	| varchar '(' NUM ')' opt_binary { Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| nvarchar '(' NUM ')' opt_bin_mod { Lex->length=$3.str;
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					  $$= MYSQL_TYPE_VARCHAR;
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					  Lex->charset=national_charset_info; }
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	| VARBINARY '(' NUM ')' 	{ Lex->length=$3.str;
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					  Lex->charset=&my_charset_bin;
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					  $$= MYSQL_TYPE_VARCHAR; }
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	| YEAR_SYM opt_len field_options { $$=FIELD_TYPE_YEAR; }
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	| DATE_SYM			{ $$=FIELD_TYPE_DATE; }
	| TIME_SYM			{ $$=FIELD_TYPE_TIME; }
3152
	| TIMESTAMP opt_len
3153
	  {
3154
	    if (YYTHD->variables.sql_mode & MODE_MAXDB)
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	      $$=FIELD_TYPE_DATETIME;
	    else
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            {
              /* 
                Unlike other types TIMESTAMP fields are NOT NULL by default.
              */
              Lex->type|= NOT_NULL_FLAG;
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	      $$=FIELD_TYPE_TIMESTAMP;
3163
            }
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	   }
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	| DATETIME			{ $$=FIELD_TYPE_DATETIME; }
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	| TINYBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_TINY_BLOB; }
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	| BLOB_SYM opt_len		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_BLOB; }
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	| spatial_type
          {
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#ifdef HAVE_SPATIAL
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            Lex->charset=&my_charset_bin;
            Lex->uint_geom_type= (uint)$1;
            $$=FIELD_TYPE_GEOMETRY;
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#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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            MYSQL_YYABORT;
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#endif
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          }
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	| MEDIUMBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONGBLOB			{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_LONG_BLOB; }
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	| LONG_SYM VARBINARY		{ Lex->charset=&my_charset_bin;
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					  $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| LONG_SYM varchar opt_binary	{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| TINYTEXT opt_binary		{ $$=FIELD_TYPE_TINY_BLOB; }
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	| TEXT_SYM opt_len opt_binary	{ $$=FIELD_TYPE_BLOB; }
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	| MEDIUMTEXT opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
	| LONGTEXT opt_binary		{ $$=FIELD_TYPE_LONG_BLOB; }
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	| DECIMAL_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| NUMERIC_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| FIXED_SYM float_options field_options
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                                        { $$=FIELD_TYPE_NEWDECIMAL;}
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	| ENUM {Lex->interval_list.empty();} '(' string_list ')' opt_binary
3200
	  { $$=FIELD_TYPE_ENUM; }
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	| SET { Lex->interval_list.empty();} '(' string_list ')' opt_binary
3202
	  { $$=FIELD_TYPE_SET; }
3203
	| LONG_SYM opt_binary		{ $$=FIELD_TYPE_MEDIUM_BLOB; }
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	| SERIAL_SYM
	  {
	    $$=FIELD_TYPE_LONGLONG;
	    Lex->type|= (AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNSIGNED_FLAG |
		         UNIQUE_FLAG);
	  }
3210
	;
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spatial_type:
	GEOMETRY_SYM	      { $$= Field::GEOM_GEOMETRY; }
	| GEOMETRYCOLLECTION  { $$= Field::GEOM_GEOMETRYCOLLECTION; }
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	| POINT_SYM           { Lex->length= (char*)"21";
                                $$= Field::GEOM_POINT;
                              }
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	| MULTIPOINT          { $$= Field::GEOM_MULTIPOINT; }
	| LINESTRING          { $$= Field::GEOM_LINESTRING; }
	| MULTILINESTRING     { $$= Field::GEOM_MULTILINESTRING; }
	| POLYGON             { $$= Field::GEOM_POLYGON; }
	| MULTIPOLYGON        { $$= Field::GEOM_MULTIPOLYGON; }
	;

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char:
	CHAR_SYM {}
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	;

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

nvarchar:
	NATIONAL_SYM VARCHAR {}
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	| NVARCHAR_SYM {}
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	| NCHAR_SYM VARCHAR {}
	| NATIONAL_SYM CHAR_SYM VARYING {}
	| NCHAR_SYM VARYING {}
	;
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int_type:
	INT_SYM		{ $$=FIELD_TYPE_LONG; }
	| TINYINT	{ $$=FIELD_TYPE_TINY; }
	| SMALLINT	{ $$=FIELD_TYPE_SHORT; }
	| MEDIUMINT	{ $$=FIELD_TYPE_INT24; }
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	| BIGINT	{ $$=FIELD_TYPE_LONGLONG; };
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real_type:
3255
	REAL		{ $$= YYTHD->variables.sql_mode & MODE_REAL_AS_FLOAT ?
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			      FIELD_TYPE_FLOAT : FIELD_TYPE_DOUBLE; }
	| DOUBLE_SYM	{ $$=FIELD_TYPE_DOUBLE; }
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	| DOUBLE_SYM PRECISION { $$=FIELD_TYPE_DOUBLE; };
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float_options:
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        /* empty */		{ Lex->dec=Lex->length= (char*)0; }
        | '(' NUM ')'		{ Lex->length=$2.str; Lex->dec= (char*)0; }
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	| precision		{};
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precision:
	'(' NUM ',' NUM ')'
	{
	  LEX *lex=Lex;
	  lex->length=$2.str; lex->dec=$4.str;
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	};
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field_options:
	/* empty */		{}
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	| field_opt_list	{};
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field_opt_list:
	field_opt_list field_option {}
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	| field_option {};
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field_option:
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	SIGNED_SYM	{}
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	| UNSIGNED	{ Lex->type|= UNSIGNED_FLAG;}
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	| ZEROFILL	{ Lex->type|= UNSIGNED_FLAG | ZEROFILL_FLAG; };
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opt_len:
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	/* empty */	{ Lex->length=(char*) 0; } /* use default length */
	| '(' NUM ')'	{ Lex->length= $2.str; };
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opt_precision:
	/* empty */	{}
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	| precision	{};
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opt_attribute:
	/* empty */ {}
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	| opt_attribute_list {};
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opt_attribute_list:
	opt_attribute_list attribute {}
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	| attribute;
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attribute:
	NULL_SYM	  { Lex->type&= ~ NOT_NULL_FLAG; }
3304
	| not NULL_SYM	  { Lex->type|= NOT_NULL_FLAG; }
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	| DEFAULT now_or_signed_literal { Lex->default_value=$2; }
	| ON UPDATE_SYM NOW_SYM optional_braces 
          { Lex->on_update_value= new Item_func_now_local(); }
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	| AUTO_INC	  { Lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG; }
3309
	| SERIAL_SYM DEFAULT VALUE_SYM
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	  { 
	    LEX *lex=Lex;
	    lex->type|= AUTO_INCREMENT_FLAG | NOT_NULL_FLAG | UNIQUE_FLAG; 
3313
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
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	  }
	| opt_primary KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= PRI_KEY_FLAG | NOT_NULL_FLAG; 
3319
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3320 3321 3322 3323 3324
	  }
	| UNIQUE_SYM	  
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_FLAG; 
3325
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3326 3327 3328 3329 3330
	  }
	| UNIQUE_SYM KEY_SYM 
	  {
	    LEX *lex=Lex;
	    lex->type|= UNIQUE_KEY_FLAG; 
3331
	    lex->alter_info.flags|= ALTER_ADD_INDEX; 
3332
	  }
3333
	| COMMENT_SYM TEXT_STRING_sys { Lex->comment= $2; }
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	| COLLATE_SYM collation_name
	  {
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	    if (Lex->charset && !my_charset_same(Lex->charset,$2))
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	    {
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	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $2->name,Lex->charset->csname);
3340
	      MYSQL_YYABORT;
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	    }
	    else
	    {
	      Lex->charset=$2;
	    }
	  }
	;
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now_or_signed_literal:
        NOW_SYM optional_braces { $$= new Item_func_now_local(); }
        | signed_literal { $$=$1; }
        ;

3354 3355 3356 3357
charset:
	CHAR_SYM SET	{}
	| CHARSET	{}
	;
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3359
charset_name:
3360
	ident_or_text
3361
	{
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	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))))
3363
	  {
3364
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
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	    MYSQL_YYABORT;
3366
	  }
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	}
	| BINARY { $$= &my_charset_bin; }
	;
3370

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charset_name_or_default:
	charset_name { $$=$1;   }
	| DEFAULT    { $$=NULL; } ;
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opt_load_data_charset:
	/* Empty */ { $$= NULL; }
	| charset charset_name_or_default { $$= $2; }
	;
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old_or_new_charset_name:
	ident_or_text
	{
	  if (!($$=get_charset_by_csname($1.str,MY_CS_PRIMARY,MYF(0))) &&
	      !($$=get_old_charset_by_name($1.str)))
	  {
3386
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), $1.str);
3387
	    MYSQL_YYABORT;
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	  }
	}
	| BINARY { $$= &my_charset_bin; }
	;

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

3397
collation_name:
3398
	ident_or_text
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	{
	  if (!($$=get_charset_by_name($1.str,MYF(0))))
	  {
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	    my_error(ER_UNKNOWN_COLLATION, MYF(0), $1.str);
3403
	    MYSQL_YYABORT;
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	  }
	};

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

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

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

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opt_binary:
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	/* empty */			{ Lex->charset=NULL; }
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	| ASCII_SYM opt_bin_mod		{ Lex->charset=&my_charset_latin1; }
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	| BYTE_SYM			{ Lex->charset=&my_charset_bin; }
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	| UNICODE_SYM opt_bin_mod
	{
	  if (!(Lex->charset=get_charset_by_csname("ucs2",
                                                   MY_CS_PRIMARY,MYF(0))))
	  {
	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), "ucs2");
3430
	    MYSQL_YYABORT;
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	  }
	}
	| charset charset_name opt_bin_mod	{ Lex->charset=$2; }
        | BINARY opt_bin_charset { Lex->type|= BINCMP_FLAG; };

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

opt_bin_charset:
3441
        /* empty */ { Lex->charset= NULL; }
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	| ASCII_SYM	{ Lex->charset=&my_charset_latin1; }
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	| UNICODE_SYM
	{
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	  if (!(Lex->charset=get_charset_by_csname("ucs2",
                                                   MY_CS_PRIMARY,MYF(0))))
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	  {
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	    my_error(ER_UNKNOWN_CHARACTER_SET, MYF(0), "ucs2");
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	    MYSQL_YYABORT;
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	  }
	}
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	| charset charset_name	{ Lex->charset=$2; } ;
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opt_primary:
	/* empty */
	| PRIMARY_SYM
3457
	;
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references:
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	REFERENCES table_ident
	{
3462
	  LEX *lex=Lex;
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	  lex->fk_delete_opt= lex->fk_update_opt= lex->fk_match_option= 0;
	  lex->ref_list.empty();
	}
	opt_ref_list
	{
	  $$=$2;
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	};
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opt_ref_list:
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	/* empty */ opt_on_delete {}
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	| '(' ref_list ')' opt_on_delete {};
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ref_list:
	ref_list ',' ident	{ Lex->ref_list.push_back(new key_part_spec($3.str)); }
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	| ident			{ Lex->ref_list.push_back(new key_part_spec($1.str)); };
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opt_on_delete:
	/* empty */ {}
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	| opt_on_delete_list {};
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opt_on_delete_list:
	opt_on_delete_list opt_on_delete_item {}
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	| opt_on_delete_item {};
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opt_on_delete_item:
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	ON DELETE_SYM delete_option   { Lex->fk_delete_opt= $3; }
	| ON UPDATE_SYM delete_option { Lex->fk_update_opt= $3; }
	| MATCH FULL	{ Lex->fk_match_option= foreign_key::FK_MATCH_FULL; }
	| MATCH PARTIAL { Lex->fk_match_option= foreign_key::FK_MATCH_PARTIAL; }
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	| MATCH SIMPLE_SYM { Lex->fk_match_option= foreign_key::FK_MATCH_SIMPLE; };
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delete_option:
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	RESTRICT	 { $$= (int) foreign_key::FK_OPTION_RESTRICT; }
	| CASCADE	 { $$= (int) foreign_key::FK_OPTION_CASCADE; }
	| SET NULL_SYM   { $$= (int) foreign_key::FK_OPTION_SET_NULL; }
	| NO_SYM ACTION  { $$= (int) foreign_key::FK_OPTION_NO_ACTION; }
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	| SET DEFAULT    { $$= (int) foreign_key::FK_OPTION_DEFAULT;  };
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key_type:
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	key_or_index			    { $$= Key::MULTIPLE; }
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	| FULLTEXT_SYM opt_key_or_index	    { $$= Key::FULLTEXT; }
	| SPATIAL_SYM opt_key_or_index
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	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
3512
	    MYSQL_YYABORT;
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#endif
	  };
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constraint_key_type:
	PRIMARY_SYM KEY_SYM  { $$= Key::PRIMARY; }
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	| UNIQUE_SYM opt_key_or_index { $$= Key::UNIQUE; };
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key_or_index:
	KEY_SYM {}
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	| INDEX_SYM {};
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opt_key_or_index:
	/* empty */ {}
	| key_or_index
	;

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keys_or_index:
	KEYS {}
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	| INDEX_SYM {}
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	| INDEXES {};
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3534
opt_unique_or_fulltext:
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	/* empty */	{ $$= Key::MULTIPLE; }
	| UNIQUE_SYM	{ $$= Key::UNIQUE; }
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	| FULLTEXT_SYM	{ $$= Key::FULLTEXT;}
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	| SPATIAL_SYM
	  {
#ifdef HAVE_SPATIAL
	    $$= Key::SPATIAL;
#else
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            my_error(ER_FEATURE_DISABLED, MYF(0),
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                     sym_group_geom.name, sym_group_geom.needed_define);
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	    MYSQL_YYABORT;
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#endif
	  }
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        ;
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key_alg:
3551
	/* empty */		   { $$= HA_KEY_ALG_UNDEF; }
3552
	| USING opt_btree_or_rtree { $$= $2; }
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	| TYPE_SYM opt_btree_or_rtree  { $$= $2; };
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opt_btree_or_rtree:
	BTREE_SYM	{ $$= HA_KEY_ALG_BTREE; }
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	| RTREE_SYM
	  {
	    $$= HA_KEY_ALG_RTREE;
	  }
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	| HASH_SYM	{ $$= HA_KEY_ALG_HASH; };
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key_list:
	key_list ',' key_part order_dir { Lex->col_list.push_back($3); }
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	| key_part order_dir		{ Lex->col_list.push_back($1); };
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key_part:
	ident			{ $$=new key_part_spec($1.str); }
3569 3570 3571 3572 3573
	| ident '(' NUM ')'	
        {
          int key_part_len= atoi($3.str);
          if (!key_part_len)
          {
3574
            my_error(ER_KEY_PART_0, MYF(0), $1.str);
3575 3576 3577
          }
          $$=new key_part_spec($1.str,(uint) key_part_len);
        };
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opt_ident:
	/* empty */	{ $$=(char*) 0; }	/* Defaultlength */
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	| field_ident	{ $$=$1.str; };
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3583
opt_component:
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        /* empty */      { $$= null_lex_str; }
        | '.' ident      { $$= $2; };
3586

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

alter:
	ALTER opt_ignore TABLE_SYM table_ident
	{
3598
	  THD *thd= YYTHD;
3599
	  LEX *lex= thd->lex;
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	  lex->sql_command= SQLCOM_ALTER_TABLE;
	  lex->name= 0;
	  lex->duplicates= DUP_ERROR; 
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	  if (!lex->select_lex.add_table_to_list(thd, $4, NULL,
						 TL_OPTION_UPDATING))
3605
	    MYSQL_YYABORT;
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	  lex->col_list.empty();
3607
          lex->select_lex.init_order();
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	  lex->select_lex.db=
            ((TABLE_LIST*) lex->select_lex.table_list.first)->db;
          lex->name=0;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
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	  lex->create_info.db_type= DB_TYPE_DEFAULT;
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	  lex->create_info.default_table_charset= NULL;
3614
	  lex->create_info.row_type= ROW_TYPE_NOT_USED;
3615
          lex->alter_info.reset();
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	}
3617 3618
	alter_list
	{}
3619
	| ALTER DATABASE ident_or_empty
3620 3621 3622 3623
          {
            Lex->create_info.default_table_charset= NULL;
            Lex->create_info.used_fields= 0;
          }
3624
          create_database_options
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	  {
	    LEX *lex=Lex;
	    lex->sql_command=SQLCOM_ALTER_DB;
3628
	    lex->name= $3;
3629
            if (lex->name == NULL && lex->copy_db_to(&lex->name, NULL))
3630
              MYSQL_YYABORT;
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	  }
	| ALTER PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

3636 3637 3638
	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
3639
	      MYSQL_YYABORT;
3640
	    }
3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_PROCEDURE;
	    lex->spname= $3;
	  }
	| ALTER FUNCTION_SYM sp_name
	  {
	    LEX *lex= Lex;
3653

3654 3655 3656
	    if (lex->sphead)
	    {
	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
3657
	      MYSQL_YYABORT;
3658
	    }
3659 3660 3661 3662 3663 3664 3665 3666 3667
	    bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
          }
	  sp_a_chistics
	  {
	    LEX *lex=Lex;

	    lex->sql_command= SQLCOM_ALTER_FUNCTION;
	    lex->spname= $3;
	  }
3668 3669
        | ALTER view_algorithm_opt definer view_suid
          VIEW_SYM table_ident
3670 3671 3672
	  {
	    THD *thd= YYTHD;
	    LEX *lex= thd->lex;
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	    if (lex->sphead)
            {
              my_error(ER_SP_BADSTATEMENT, MYF(0), "ALTER VIEW");
              MYSQL_YYABORT;
            }
3678 3679 3680
	    lex->sql_command= SQLCOM_CREATE_VIEW;
	    lex->create_view_mode= VIEW_ALTER;
	    /* first table in list is target VIEW name */
3681
	    lex->select_lex.add_table_to_list(thd, $6, NULL, TL_OPTION_UPDATING);
3682
	  }
3683
	  view_list_opt AS view_select view_check_option
3684 3685
	  {}
	;
3686

3687 3688 3689 3690
ident_or_empty:
	/* empty */  { $$= 0; }
	| ident      { $$= $1.str; };

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alter_list:
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	| DISCARD TABLESPACE { Lex->alter_info.tablespace_op= DISCARD_TABLESPACE; }
	| IMPORT TABLESPACE { Lex->alter_info.tablespace_op= IMPORT_TABLESPACE; }
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        | alter_list_item
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	| alter_list ',' alter_list_item;
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add_column:
3698
	ADD opt_column
3699 3700
	{
	  LEX *lex=Lex;
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	  lex->change=0;
	  lex->alter_info.flags|= ALTER_ADD_COLUMN;
3703
	};
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alter_list_item:
3706 3707 3708 3709
	add_column column_def opt_place { }
	| ADD key_def
	  {
	    Lex->alter_info.flags|= ALTER_ADD_INDEX;
3710
	  }
3711 3712 3713 3714
	| add_column '(' field_list ')'
          {
	    Lex->alter_info.flags|= ALTER_ADD_COLUMN | ALTER_ADD_INDEX;
          }
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	| CHANGE opt_column field_ident
	  {
	     LEX *lex=Lex;
3718
	     lex->change= $3.str;
3719
	     lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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	  }
3721
          field_spec opt_place
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        | MODIFY_SYM opt_column field_ident
          {
            LEX *lex=Lex;
3725
            lex->length=lex->dec=0; lex->type=0;
3726
            lex->default_value= lex->on_update_value= 0;
3727
            lex->comment=null_lex_str;
3728
	    lex->charset= NULL;
3729
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN;
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          }
          type opt_attribute
          {
            LEX *lex=Lex;
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            if (add_field_to_list(lex->thd,$3.str,
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                                  (enum enum_field_types) $5,
                                  lex->length,lex->dec,lex->type,
3737
                                  lex->default_value, lex->on_update_value,
3738
                                  &lex->comment,
3739
				  $3.str, &lex->interval_list, lex->charset,
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				  lex->uint_geom_type))
3741
	       MYSQL_YYABORT;
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          }
          opt_place
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	| DROP opt_column field_ident opt_restrict
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	  {
	    LEX *lex=Lex;
3747
	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::COLUMN,
3748
                                                               $3.str));
3749
	    lex->alter_info.flags|= ALTER_DROP_COLUMN;
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	  }
3751 3752 3753 3754
	| DROP FOREIGN KEY_SYM opt_ident
          {
	    Lex->alter_info.flags|= ALTER_DROP_INDEX;
          }
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	| DROP PRIMARY_SYM KEY_SYM
	  {
	    LEX *lex=Lex;
3758 3759 3760
	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
				               primary_key_name));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DROP key_or_index field_ident
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
					                       $3.str));
	    lex->alter_info.flags|= ALTER_DROP_INDEX;
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	  }
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	| DISABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= DISABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
	| ENABLE_SYM KEYS
          {
	    LEX *lex=Lex;
            lex->alter_info.keys_onoff= ENABLE;
	    lex->alter_info.flags|= ALTER_KEYS_ONOFF;
          }
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	| ALTER opt_column field_ident SET DEFAULT signed_literal
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	  {
	    LEX *lex=Lex;
3784
	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,$6));
3785
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
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	| ALTER opt_column field_ident DROP DEFAULT
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	  {
	    LEX *lex=Lex;
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	    lex->alter_info.alter_list.push_back(new Alter_column($3.str,
                                                                  (Item*) 0));
3792
	    lex->alter_info.flags|= ALTER_CHANGE_COLUMN_DEFAULT;
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	  }
3794
	| RENAME opt_to table_ident
3795
	  {
3796
	    LEX *lex=Lex;
3797
	    lex->select_lex.db=$3->db.str;
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            if (lex->select_lex.db == NULL &&
3799
                lex->copy_db_to(&lex->select_lex.db, NULL))
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            {
3801
              MYSQL_YYABORT;
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            }
3803 3804 3805
            if (check_table_name($3->table.str,$3->table.length) ||
                $3->db.str && check_db_name($3->db.str))
            {
3806
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3->table.str);
3807
              MYSQL_YYABORT;
3808
            }
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	    lex->name= $3->table.str;
3810
	    lex->alter_info.flags|= ALTER_RENAME;
3811
	  }
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	| CONVERT_SYM TO_SYM charset charset_name_or_default opt_collate
	  {
	    if (!$4)
	    {
	      THD *thd= YYTHD;
	      $4= thd->variables.collation_database;
	    }
	    $5= $5 ? $5 : $4;
	    if (!my_charset_same($4,$5))
	    {
3822 3823
	      my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                       $5->name, $4->csname);
3824
	      MYSQL_YYABORT;
3825
	    }
3826
	    LEX *lex= Lex;
3827
	    lex->create_info.table_charset=
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	      lex->create_info.default_table_charset= $5;
	    lex->create_info.used_fields|= (HA_CREATE_USED_CHARSET |
					    HA_CREATE_USED_DEFAULT_CHARSET);
3831
	    lex->alter_info.flags|= ALTER_CONVERT;
3832
	  }
3833
        | create_table_options_space_separated
3834 3835
	  {
	    LEX *lex=Lex;
3836
	    lex->alter_info.flags|= ALTER_OPTIONS;
3837
	  }
3838 3839 3840 3841
	| FORCE_SYM
	  {
	    Lex->alter_info.flags|= ALTER_FORCE;
	   }
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	| alter_order_clause
3843 3844
	  {
	    LEX *lex=Lex;
3845
	    lex->alter_info.flags|= ALTER_ORDER;
3846
	  };
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opt_column:
	/* empty */	{}
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	| COLUMN_SYM	{};
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opt_ignore:
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	/* empty */	{ Lex->ignore= 0;}
	| IGNORE_SYM	{ Lex->ignore= 1;}
	;
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opt_restrict:
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	/* empty */	{ Lex->drop_mode= DROP_DEFAULT; }
	| RESTRICT	{ Lex->drop_mode= DROP_RESTRICT; }
	| CASCADE	{ Lex->drop_mode= DROP_CASCADE; }
	;
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opt_place:
	/* empty */	{}
	| AFTER_SYM ident { store_position_for_column($2.str); }
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	| FIRST_SYM	  { store_position_for_column(first_keyword); };
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opt_to:
	/* empty */	{}
	| TO_SYM	{}
3871
	| EQ		{}
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	| AS		{};
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/*
3875
  SLAVE START and SLAVE STOP are deprecated. We keep them for compatibility.
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*/

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slave:
3879
	  START_SYM SLAVE slave_thread_opts
3880 3881 3882 3883 3884 3885
          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_START;
	    lex->type = 0;
	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
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            /* If you change this code don't forget to update SLAVE START too */
3887 3888 3889
          }
          slave_until
          {}
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        | STOP_SYM SLAVE slave_thread_opts
          {
	    LEX *lex=Lex;
            lex->sql_command = SQLCOM_SLAVE_STOP;
	    lex->type = 0;
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            /* If you change this code don't forget to update SLAVE STOP too */
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          }
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	| SLAVE START_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_START;
	   lex->type = 0;
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	    /* We'll use mi structure for UNTIL options */
	    bzero((char*) &lex->mi, sizeof(lex->mi));
          }
          slave_until
          {}
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	| SLAVE STOP_SYM slave_thread_opts
         {
	   LEX *lex=Lex;
           lex->sql_command = SQLCOM_SLAVE_STOP;
	   lex->type = 0;
         }
        ;

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start:
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	START_SYM TRANSACTION_SYM start_transaction_opts
        {
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          LEX *lex= Lex;
          lex->sql_command= SQLCOM_BEGIN;
          lex->start_transaction_opt= $3;
3922
        }
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	;

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start_transaction_opts:
        /*empty*/ { $$ = 0; }
        | WITH CONSISTENT_SYM SNAPSHOT_SYM
        {
           $$= MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT;
        }
3931
        ;
3932

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slave_thread_opts:
3934 3935
	{ Lex->slave_thd_opt= 0; }
	slave_thread_opt_list
3936
        {}
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	;
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slave_thread_opt_list:
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	slave_thread_opt
3941 3942
	| slave_thread_opt_list ',' slave_thread_opt
	;
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slave_thread_opt:
3945
	/*empty*/	{}
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	| SQL_THREAD	{ Lex->slave_thd_opt|=SLAVE_SQL; }
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	| RELAY_THREAD 	{ Lex->slave_thd_opt|=SLAVE_IO; }
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	;
3949

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slave_until:
	/*empty*/	{}
	| UNTIL_SYM slave_until_opts
          {
            LEX *lex=Lex;
            if ((lex->mi.log_file_name || lex->mi.pos) &&
                (lex->mi.relay_log_name || lex->mi.relay_log_pos) ||
                !((lex->mi.log_file_name && lex->mi.pos) ||
                  (lex->mi.relay_log_name && lex->mi.relay_log_pos)))
            {
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               my_message(ER_BAD_SLAVE_UNTIL_COND,
                          ER(ER_BAD_SLAVE_UNTIL_COND), MYF(0));
3962
               MYSQL_YYABORT;
3963 3964 3965 3966 3967 3968 3969 3970 3971 3972
            }

          }
	;

slave_until_opts:
       master_file_def
       | slave_until_opts ',' master_file_def ;


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restore:
	RESTORE_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_RESTORE_TABLE;
	}
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	table_list FROM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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backup:
	BACKUP_SYM table_or_tables
	{
	   Lex->sql_command = SQLCOM_BACKUP_TABLE;
	}
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	table_list TO_SYM TEXT_STRING_sys
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        {
	  Lex->backup_dir = $6.str;
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        };
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checksum:
        CHECKSUM_SYM table_or_tables
	{
	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_CHECKSUM;
	}
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	table_list opt_checksum_type
        {}
4001 4002
	;

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

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repair:
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	REPAIR opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_REPAIR;
4014
           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_repair_type
	{}
	;
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opt_mi_repair_type:
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	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_repair_types {};
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mi_repair_types:
	mi_repair_type {}
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	| mi_repair_type mi_repair_types {};
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mi_repair_type:
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	QUICK          { Lex->check_opt.flags|= T_QUICK; }
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	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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        | USE_FRM      { Lex->check_opt.sql_flags|= TT_USEFRM; };
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analyze:
4035
	ANALYZE_SYM opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_ANALYZE;
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           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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check:
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	CHECK_SYM table_or_tables
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	{
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	  LEX *lex=Lex;

	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "CHECK");
4054
	    MYSQL_YYABORT;
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	  }
	  lex->sql_command = SQLCOM_CHECK;
	  lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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opt_mi_check_type:
	/* empty */ { Lex->check_opt.flags = T_MEDIUM; }
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	| mi_check_types {};
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mi_check_types:
	mi_check_type {}
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	| mi_check_type mi_check_types {};
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mi_check_type:
	QUICK      { Lex->check_opt.flags|= T_QUICK; }
	| FAST_SYM { Lex->check_opt.flags|= T_FAST; }
	| MEDIUM_SYM { Lex->check_opt.flags|= T_MEDIUM; }
	| EXTENDED_SYM { Lex->check_opt.flags|= T_EXTEND; }
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	| CHANGED  { Lex->check_opt.flags|= T_CHECK_ONLY_CHANGED; }
        | FOR_SYM UPGRADE_SYM { Lex->check_opt.sql_flags|= TT_FOR_UPGRADE; };
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optimize:
4080
	OPTIMIZE opt_no_write_to_binlog table_or_tables
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	{
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	   LEX *lex=Lex;
	   lex->sql_command = SQLCOM_OPTIMIZE;
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           lex->no_write_to_binlog= $2;
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	   lex->check_opt.init();
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	}
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	table_list opt_mi_check_type
	{}
	;
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opt_no_write_to_binlog:
	/* empty */        { $$= 0; }
	| NO_WRITE_TO_BINLOG  { $$= 1; }
4094
	| LOCAL_SYM  { $$= 1; }
4095 4096
	;

4097 4098 4099
rename:
	RENAME table_or_tables
	{
4100
          Lex->sql_command= SQLCOM_RENAME_TABLE;
4101
	}
4102 4103
	table_to_table_list
	{}
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	| RENAME USER clear_privileges rename_list
          {
	    Lex->sql_command = SQLCOM_RENAME_USER;
          }
4108
	;
4109

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rename_list:
        user TO_SYM user
        {
          if (Lex->users_list.push_back($1) || Lex->users_list.push_back($3))
4114
            MYSQL_YYABORT;
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        }
        | rename_list ',' user TO_SYM user
          {
            if (Lex->users_list.push_back($3) || Lex->users_list.push_back($5))
4119
              MYSQL_YYABORT;
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          }
        ;

4123 4124
table_to_table_list:
	table_to_table
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	| table_to_table_list ',' table_to_table;
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table_to_table:
	table_ident TO_SYM table_ident
4129
	{
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	  LEX *lex=Lex;
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	  SELECT_LEX *sl= lex->current_select;
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	  if (!sl->add_table_to_list(lex->thd, $1,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE) ||
	      !sl->add_table_to_list(lex->thd, $3,NULL,TL_OPTION_UPDATING,
				     TL_IGNORE))
4136
	    MYSQL_YYABORT;
4137
	};
4138

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keycache:
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        CACHE_SYM INDEX_SYM keycache_list IN_SYM key_cache_name
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        {
          LEX *lex=Lex;
4143
          lex->sql_command= SQLCOM_ASSIGN_TO_KEYCACHE;
4144
	  lex->ident= $5;
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        }
        ;

keycache_list:
        assign_to_keycache
        | keycache_list ',' assign_to_keycache;

assign_to_keycache:
4153
        table_ident cache_keys_spec
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        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          if (!sel->add_table_to_list(lex->thd, $1, NULL, 0,
                                      TL_READ,
                                      sel->get_use_index(),
4160
                                      (List<String> *)0))
4161
            MYSQL_YYABORT;
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        }
        ;

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key_cache_name:
	ident	   { $$= $1; }
	| DEFAULT  { $$ = default_key_cache_base; }
4168
	;
4169

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

preload_list:
	preload_keys
	| preload_list ',' preload_keys;

preload_keys:
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	table_ident cache_keys_spec opt_ignore_leaves
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	{
	  LEX *lex=Lex;
	  SELECT_LEX *sel= &lex->select_lex;
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	  if (!sel->add_table_to_list(lex->thd, $1, NULL, $3,
                                      TL_READ,
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                                      sel->get_use_index(),
                                      (List<String> *)0))
4193
            MYSQL_YYABORT;
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	}
	;

4197
cache_keys_spec:
4198
        { Select->interval_list.empty(); }
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        cache_key_list_or_empty
        {
          LEX *lex=Lex;
          SELECT_LEX *sel= &lex->select_lex;
          sel->use_index= sel->interval_list;
        }
        ;
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cache_key_list_or_empty:
4208
	/* empty */	{ Lex->select_lex.use_index_ptr= 0; }
4209
	| opt_key_or_index '(' key_usage_list2 ')'
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	  {
            SELECT_LEX *sel= &Lex->select_lex;
	    sel->use_index_ptr= &sel->use_index;
	  }
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	;

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

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/*
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  Select : retrieve data from table
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*/


select:
4228 4229 4230 4231
	select_init
	{
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_SELECT;
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	}
	;
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4235
/* Need select_init2 for subselects. */
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select_init:
4237
	SELECT_SYM select_init2
4238
	|
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	'(' select_paren ')' union_opt;

select_paren:
	SELECT_SYM select_part2
4243
	  {
4244
	    LEX *lex= Lex;
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            SELECT_LEX * sel= lex->current_select;
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	    if (sel->set_braces(1))
4247
	    {
4248 4249
              my_parse_error(ER(ER_SYNTAX_ERROR));
	      MYSQL_YYABORT;
4250
	    }
4251 4252 4253 4254 4255
            if (sel->linkage == UNION_TYPE &&
                !sel->master_unit()->first_select()->braces &&
                sel->master_unit()->first_select()->linkage ==
                UNION_TYPE)
            {
4256 4257
              my_parse_error(ER(ER_SYNTAX_ERROR));
              MYSQL_YYABORT;
4258
            }
4259
            /* select in braces, can't contain global parameters */
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	    if (sel->master_unit()->fake_select_lex)
              sel->master_unit()->global_parameters=
                 sel->master_unit()->fake_select_lex;
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          }
	| '(' select_paren ')';
4265

4266 4267
select_init2:
	select_part2
4268
        {
4269
	  LEX *lex= Lex;
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          SELECT_LEX * sel= lex->current_select;
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          if (lex->current_select->set_braces(0))
4272
	  {
4273 4274
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
4275
	  }
4276 4277
	  if (sel->linkage == UNION_TYPE &&
	      sel->master_unit()->first_select()->braces)
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	  {
4279 4280
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
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	  }
4282
	}
4283
	union_clause
4284 4285
	;

4286
select_part2:
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	{
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	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->linkage != UNION_TYPE)
	    mysql_init_select(lex);
4292
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
	select_options select_item_list
	{
4296
	  Select->parsing_place= NO_MATTER;
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	}
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	select_into select_lock_type;
4299

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select_into:
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	opt_order_clause opt_limit_clause {}
4302
        | into
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	| select_from
4304 4305
	| into select_from
	| select_from into;
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select_from:
4308
        FROM join_table_list where_clause group_clause having_clause
4309
	       opt_order_clause opt_limit_clause procedure_clause
4310 4311 4312 4313 4314
          {
            Select->context.table_list=
              Select->context.first_name_resolution_table= 
                (TABLE_LIST *) Select->table_list.first;
          }
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        | FROM DUAL_SYM where_clause opt_limit_clause
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          /* oracle compatibility: oracle always requires FROM clause,
             and DUAL is system table without fields.
             Is "SELECT 1 FROM DUAL" any better than "SELECT 1" ?
          Hmmm :) */
4320
	;
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select_options:
	/* empty*/
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	| select_option_list
	  {
	    if (test_all_bits(Select->options, SELECT_ALL | SELECT_DISTINCT))
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "ALL", "DISTINCT");
4329
              MYSQL_YYABORT;
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	    }
          }
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	  ;
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select_option_list:
	select_option_list select_option
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	| select_option;
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select_option:
4339
	STRAIGHT_JOIN { Select->options|= SELECT_STRAIGHT_JOIN; }
4340 4341 4342
	| HIGH_PRIORITY
	  {
	    if (check_simple_select())
4343
	      MYSQL_YYABORT;
4344 4345
	    Lex->lock_option= TL_READ_HIGH_PRIORITY;
	  }
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	| DISTINCT         { Select->options|= SELECT_DISTINCT; }
4347 4348
	| SQL_SMALL_RESULT { Select->options|= SELECT_SMALL_RESULT; }
	| SQL_BIG_RESULT { Select->options|= SELECT_BIG_RESULT; }
4349 4350 4351
	| SQL_BUFFER_RESULT
	  {
	    if (check_simple_select())
4352
	      MYSQL_YYABORT;
4353 4354 4355 4356 4357
	    Select->options|= OPTION_BUFFER_RESULT;
	  }
	| SQL_CALC_FOUND_ROWS
	  {
	    if (check_simple_select())
4358
	      MYSQL_YYABORT;
4359 4360
	    Select->options|= OPTION_FOUND_ROWS;
	  }
4361 4362 4363 4364 4365 4366
	| SQL_NO_CACHE_SYM
          {
            Lex->safe_to_cache_query=0;
	    Lex->select_lex.options&= ~OPTION_TO_QUERY_CACHE;
            Lex->select_lex.sql_cache= SELECT_LEX::SQL_NO_CACHE;
          }
4367 4368
	| SQL_CACHE_SYM
	  {
4369 4370 4371 4372 4373 4374
            /*
             Honor this flag only if SQL_NO_CACHE wasn't specified AND
             we are parsing the outermost SELECT in the query.
            */
            if (Lex->select_lex.sql_cache != SELECT_LEX::SQL_NO_CACHE &&
                Lex->current_select == &Lex->select_lex)
4375 4376 4377 4378 4379
            {
              Lex->safe_to_cache_query=1;
	      Lex->select_lex.options|= OPTION_TO_QUERY_CACHE;
              Lex->select_lex.sql_cache= SELECT_LEX::SQL_CACHE;
            }
4380
	  }
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	| ALL		    { Select->options|= SELECT_ALL; }
4382
	;
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select_lock_type:
	/* empty */
	| FOR_SYM UPDATE_SYM
4387 4388
	  {
	    LEX *lex=Lex;
4389
	    lex->current_select->set_lock_for_tables(TL_WRITE);
4390
	    lex->safe_to_cache_query=0;
4391
	  }
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	| LOCK_SYM IN_SYM SHARE_SYM MODE_SYM
4393 4394
	  {
	    LEX *lex=Lex;
4395 4396
	    lex->current_select->
	      set_lock_for_tables(TL_READ_WITH_SHARED_LOCKS);
4397
	    lex->safe_to_cache_query=0;
4398 4399
	  }
	;
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select_item_list:
	  select_item_list ',' select_item
	| select_item
	| '*'
	  {
4406
	    THD *thd= YYTHD;
4407 4408 4409 4410
	    if (add_item_to_list(thd,
                                 new Item_field(&thd->lex->current_select->
                                                context,
                                                NULL, NULL, "*")))
4411
	      MYSQL_YYABORT;
4412
	    (thd->lex->current_select->with_wild)++;
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	  };
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select_item:
	  remember_name select_item2 remember_end select_alias
	  {
4419 4420 4421 4422
            THD *thd= YYTHD;
            DBUG_ASSERT($1 < $3);

	    if (add_item_to_list(thd, $2))
4423
	      MYSQL_YYABORT;
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4424
	    if ($4.str)
4425 4426
            {
              $2->is_autogenerated_name= FALSE;
4427
	      $2->set_name($4.str, $4.length, system_charset_info);
4428
            }
4429 4430 4431
	    else if (!$2->name)
            {
	      $2->set_name($1, (uint) ($3 - $1), thd->charset());
4432
	    }
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	  };
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remember_name:
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	{
          THD *thd= YYTHD;
          Lex_input_stream *lip= thd->m_lip;
          $$= (char*) lip->tok_start;
        };
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remember_end:
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	{
          THD *thd= YYTHD;
          Lex_input_stream *lip= thd->m_lip;
          $$=(char*) lip->tok_end;
        };
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select_item2:
	table_wild	{ $$=$1; } /* table.* */
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	| expr		{ $$=$1; };
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select_alias:
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	/* empty */		{ $$=null_lex_str;}
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	| AS ident		{ $$=$2; }
	| AS TEXT_STRING_sys	{ $$=$2; }
	| ident			{ $$=$1; }
	| TEXT_STRING_sys	{ $$=$1; }
	;
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optional_braces:
	/* empty */ {}
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	| '(' ')' {};
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/* all possible expressions */
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expr:	
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	  bool_term { Select->expr_list.push_front(new List<Item>); }
          bool_or_expr
          {
            List<Item> *list= Select->expr_list.pop();
            if (list->elements)
            {
              list->push_front($1);
              $$= new Item_cond_or(*list);
              /* optimize construction of logical OR to reduce
                 amount of objects for complex expressions */
            }
            else
              $$= $1;
            delete list;
          }
	;

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

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

bool_test:
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          bool_pri IS TRUE_SYM
          { $$= new (YYTHD->mem_root) Item_func_istrue($1); }
        | bool_pri IS not TRUE_SYM
          { $$= new (YYTHD->mem_root) Item_func_isnottrue($1); }
        | bool_pri IS FALSE_SYM
          { $$= new (YYTHD->mem_root) Item_func_isfalse($1); }
        | bool_pri IS not FALSE_SYM
          { $$= new (YYTHD->mem_root) Item_func_isnotfalse($1); }
        | bool_pri IS UNKNOWN_SYM { $$= new Item_func_isnull($1); }
        | bool_pri IS not UNKNOWN_SYM { $$= new Item_func_isnotnull($1); }
        | bool_pri
        ;
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bool_pri:
	bool_pri IS NULL_SYM	{ $$= new Item_func_isnull($1); }
	| bool_pri IS not NULL_SYM { $$= new Item_func_isnotnull($1); }
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	| bool_pri EQUAL_SYM predicate	{ $$= new Item_func_equal($1,$3); }
	| bool_pri comp_op predicate %prec EQ
	  { $$= (*$2)(0)->create($1,$3); }
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	| bool_pri comp_op all_or_any '(' subselect ')' %prec EQ
	  { $$= all_any_subquery_creator($1, $2, $3, $5); }
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	| predicate ;

predicate:
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          bit_expr IN_SYM '(' subselect ')'
          {
            $$= new (YYTHD->mem_root) Item_in_subselect($1, $4);
          }
        | bit_expr not IN_SYM '(' subselect ')'
          {
            THD *thd= YYTHD;
            Item *item= new (thd->mem_root) Item_in_subselect($1, $5);
            $$= negate_expression(thd, item);
          }
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        | bit_expr IN_SYM '(' expr ')'
          {
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            $$= handle_sql2003_note184_exception(YYTHD, $1, true, $4);
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          }
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        | bit_expr IN_SYM '(' expr ',' expr_list ')'
          { 
            $6->push_front($4);
            $6->push_front($1);
            $$= new (YYTHD->mem_root) Item_func_in(*$6);
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          }
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        | bit_expr not IN_SYM '(' expr ')'
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          {
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            $$= handle_sql2003_note184_exception(YYTHD, $1, false, $5);
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          }
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        | bit_expr not IN_SYM '(' expr ',' expr_list ')'
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          {
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            $7->push_front($5);
            $7->push_front($1);
            Item_func_in *item = new (YYTHD->mem_root) Item_func_in(*$7);
            item->negate();
            $$= item;
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          }
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	| bit_expr BETWEEN_SYM bit_expr AND_SYM predicate
	  { $$= new Item_func_between($1,$3,$5); }
	| bit_expr not BETWEEN_SYM bit_expr AND_SYM predicate
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    {
      Item_func_between *item= new Item_func_between($1,$4,$6);
      item->negate();
      $$= item;
    }
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	| bit_expr SOUNDS_SYM LIKE bit_expr
	  { $$= new Item_func_eq(new Item_func_soundex($1),
				 new Item_func_soundex($4)); }
	| bit_expr LIKE simple_expr opt_escape
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          { $$= new Item_func_like($1,$3,$4,Lex->escape_used); }
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	| bit_expr not LIKE simple_expr opt_escape
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          { $$= new Item_func_not(new Item_func_like($1,$4,$5, Lex->escape_used)); }
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	| bit_expr REGEXP bit_expr	{ $$= new Item_func_regex($1,$3); }
	| bit_expr not REGEXP bit_expr
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          { $$= negate_expression(YYTHD, new Item_func_regex($1,$4)); }
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	| bit_expr ;

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

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

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

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

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

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

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

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

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

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simple_expr:
	simple_ident
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 	| simple_expr COLLATE_SYM ident_or_text %prec NEG
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	  {
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	    $$= new Item_func_set_collation($1,
					    new Item_string($3.str,
							    $3.length,
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                                                            YYTHD->charset()));
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	  }
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	| literal
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	| param_marker
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	| variable
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	| sum_expr
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	| simple_expr OR_OR_SYM simple_expr
	  { $$= new Item_func_concat($1, $3); }
	| '+' simple_expr %prec NEG	{ $$= $2; }
	| '-' simple_expr %prec NEG	{ $$= new Item_func_neg($2); }
	| '~' simple_expr %prec NEG	{ $$= new Item_func_bit_neg($2); }
	| not2 simple_expr %prec NEG	{ $$= negate_expression(YYTHD, $2); }
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	| '(' subselect ')'   
          { 
            $$= new Item_singlerow_subselect($2); 
          }
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	| '(' expr ')'		{ $$= $2; }
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	| '(' expr ',' expr_list ')'
	  {
	    $4->push_front($2);
	    $$= new Item_row(*$4);
	  }
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	| ROW_SYM '(' expr ',' expr_list ')'
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	  {
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	    $5->push_front($3);
	    $$= new Item_row(*$5);
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	  }
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	| EXISTS '(' subselect ')' 
          {
            $$= new Item_exists_subselect($3); 
          }
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	| '{' ident expr '}'	{ $$= $3; }
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        | MATCH ident_list_arg AGAINST '(' bit_expr fulltext_options ')'
4694
          { $2->push_front($5);
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            Select->add_ftfunc_to_list((Item_func_match*)
                                        ($$=new Item_func_match(*$2,$6))); }
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	| ASCII_SYM '(' expr ')' { $$= new Item_func_ascii($3); }
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	| BINARY simple_expr %prec NEG
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	  {
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            $$= create_func_cast($2, ITEM_CAST_CHAR, NULL, NULL, &my_charset_bin);
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	  }
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	| CAST_SYM '(' expr AS cast_type ')'
4703
	  {
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            LEX *lex= Lex;
4705
	    $$= create_func_cast($3, $5, lex->length, lex->dec, lex->charset);
4706
            if (!$$)
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              MYSQL_YYABORT;
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	  }
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	| CASE_SYM opt_expr when_list opt_else END
	  { $$= new Item_func_case(* $3, $2, $4 ); }
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	| CONVERT_SYM '(' expr ',' cast_type ')'
4712
	  {
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	    $$= create_func_cast($3, $5, Lex->length, Lex->dec, Lex->charset);
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            if (!$$)
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              MYSQL_YYABORT;
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	  }
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	| CONVERT_SYM '(' expr USING charset_name ')'
	  { $$= new Item_func_conv_charset($3,$5); }
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	| DEFAULT '(' simple_ident ')'
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	  {
	    if ($3->is_splocal())
	    {
	      Item_splocal *il= static_cast<Item_splocal *>($3);

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	      my_error(ER_WRONG_COLUMN_NAME, MYF(0), il->my_name()->str);
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	      MYSQL_YYABORT;
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	    }
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	    $$= new Item_default_value(Lex->current_context(), $3);
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	  }
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	| VALUES '(' simple_ident_nospvar ')'
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	  { $$= new Item_insert_value(Lex->current_context(), $3); }
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	| FUNC_ARG0 '(' ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
4739
	      MYSQL_YYABORT;
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	    }
	    $$= ((Item*(*)(void))($1.symbol->create_func))();
	  }
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	| FUNC_ARG1 '(' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
4750
	      MYSQL_YYABORT;
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	    }
	    $$= ((Item*(*)(Item*))($1.symbol->create_func))($3);
	  }
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	| FUNC_ARG2 '(' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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	      my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
4761
	      MYSQL_YYABORT;
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	    }
	    $$= ((Item*(*)(Item*,Item*))($1.symbol->create_func))($3,$5);
	  }
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	| FUNC_ARG3 '(' expr ',' expr ',' expr ')'
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	  {
	    if (!$1.symbol->create_func)
	    {
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              my_error(ER_FEATURE_DISABLED, MYF(0),
                       $1.symbol->group->name,
                       $1.symbol->group->needed_define);
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	      MYSQL_YYABORT;
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	    }
	    $$= ((Item*(*)(Item*,Item*,Item*))($1.symbol->create_func))($3,$5,$7);
	  }
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	| ADDDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 0);}
	| ADDDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 0); }
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	| REPEAT_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_repeat($3,$5); }
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	| ATAN	'(' expr ')'
	  { $$= new Item_func_atan($3); }
	| ATAN	'(' expr ',' expr ')'
	  { $$= new Item_func_atan($3,$5); }
	| CHAR_SYM '(' expr_list ')'
	  { $$= new Item_func_char(*$3); }
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	| CHAR_SYM '(' expr_list USING charset_name ')'
	  { $$= new Item_func_char(*$3, $5); }
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	| CHARSET '(' expr ')'
	  { $$= new Item_func_charset($3); }
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	| COALESCE '(' expr_list ')'
	  { $$= new Item_func_coalesce(* $3); }
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	| COLLATION_SYM '(' expr ')'
	  { $$= new Item_func_collation($3); }
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	| CONCAT '(' expr_list ')'
	  { $$= new Item_func_concat(* $3); }
	| CONCAT_WS '(' expr ',' expr_list ')'
4799
	  { $5->push_front($3); $$= new Item_func_concat_ws(*$5); }
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	| CONVERT_TZ_SYM '(' expr ',' expr ',' expr ')'
	  {
4802
            if (Lex->add_time_zone_tables_to_query_tables(YYTHD))
4803
              MYSQL_YYABORT;
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	    $$= new Item_func_convert_tz($3, $5, $7);
	  }
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	| CURDATE optional_braces
4807
	  { $$= new Item_func_curdate_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME optional_braces
4809
	  { $$= new Item_func_curtime_local(); Lex->safe_to_cache_query=0; }
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	| CURTIME '(' expr ')'
4811
	  {
4812
	    $$= new Item_func_curtime_local($3);
4813
	    Lex->safe_to_cache_query=0;
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	  }
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	| CURRENT_USER optional_braces
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          {
            $$= new Item_func_current_user(Lex->current_context());
            Lex->safe_to_cache_query= 0;
          }
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	| DATE_ADD_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,0); }
	| DATE_SUB_INTERVAL '(' expr ',' interval_expr interval ')'
	  { $$= new Item_date_add_interval($3,$5,$6,1); }
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	| DATABASE '(' ')'
4825
	  {
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	    $$= new Item_func_database();
4827
            Lex->safe_to_cache_query=0;
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	  }
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	| DATE_SYM '(' expr ')'
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	  { $$= new Item_date_typecast($3); }
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	| DAY_SYM '(' expr ')'
	  { $$= new Item_func_dayofmonth($3); }
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	| ELT_FUNC '(' expr ',' expr_list ')'
4834
	  { $5->push_front($3); $$= new Item_func_elt(*$5); }
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	| MAKE_SET_SYM '(' expr ',' expr_list ')'
	  { $$= new Item_func_make_set($3, *$5); }
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	| ENCRYPT '(' expr ')'
	  {
	    $$= new Item_func_encrypt($3);
4840
	    Lex->uncacheable(UNCACHEABLE_RAND);
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	  }
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	| ENCRYPT '(' expr ',' expr ')'   { $$= new Item_func_encrypt($3,$5); }
4843
	| DECODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	  { $$= new Item_func_decode($3,$5.str); }
4845
	| ENCODE_SYM '(' expr ',' TEXT_STRING_literal ')'
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	 { $$= new Item_func_encode($3,$5.str); }
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	| DES_DECRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_decrypt($3); }
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	| DES_DECRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_decrypt($3,$5); }
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	| DES_ENCRYPT_SYM '(' expr ')'
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        { $$= new Item_func_des_encrypt($3); }
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	| DES_ENCRYPT_SYM '(' expr ',' expr ')'
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        { $$= new Item_func_des_encrypt($3,$5); }
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	| EXPORT_SET '(' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9); }
	| EXPORT_SET '(' expr ',' expr ',' expr ',' expr ',' expr ')'
		{ $$= new Item_func_export_set($3, $5, $7, $9, $11); }
	| FORMAT_SYM '(' expr ',' NUM ')'
	  { $$= new Item_func_format($3,atoi($5.str)); }
	| FROM_UNIXTIME '(' expr ')'
	  { $$= new Item_func_from_unixtime($3); }
	| FROM_UNIXTIME '(' expr ',' expr ')'
	  {
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	    $$= new Item_func_date_format (new Item_func_from_unixtime($3),$5,0);
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	  }
	| FIELD_FUNC '(' expr ',' expr_list ')'
4870
	  { $5->push_front($3); $$= new Item_func_field(*$5); }
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	| geometry_function
	  {
#ifdef HAVE_SPATIAL
	    $$= $1;
#else
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	    my_error(ER_FEATURE_DISABLED, MYF(0),
                     sym_group_geom.name, sym_group_geom.needed_define);
4878
	    MYSQL_YYABORT;
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#endif
	  }
4881
	| GET_FORMAT '(' date_time_type  ',' expr ')'
4882
	  { $$= new Item_func_get_format($3, $5); }
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	| HOUR_SYM '(' expr ')'
	  { $$= new Item_func_hour($3); }
	| IF '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_if($3,$5,$7); }
	| INSERT '(' expr ',' expr ',' expr ',' expr ')'
	  { $$= new Item_func_insert($3,$5,$7,$9); }
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	| interval_expr interval '+' expr
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	  /* we cannot put interval before - */
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	  { $$= new Item_date_add_interval($4,$1,$2,0); }
	| interval_expr
	  {
            if ($1->type() != Item::ROW_ITEM)
            {
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              my_parse_error(ER(ER_SYNTAX_ERROR));
              MYSQL_YYABORT;
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            }
            $$= new Item_func_interval((Item_row *)$1);
          }
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	| LAST_INSERT_ID '(' ')'
	  {
4903
	    $$= new Item_func_last_insert_id();
4904
	    Lex->safe_to_cache_query= 0;
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	  }
	| LAST_INSERT_ID '(' expr ')'
	  {
4908
	    $$= new Item_func_last_insert_id($3);
4909
	    Lex->safe_to_cache_query= 0;
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	  }
	| LEFT '(' expr ',' expr ')'
	  { $$= new Item_func_left($3,$5); }
	| LOCATE '(' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3); }
	| LOCATE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_locate($5,$3,$7); }
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	| GREATEST_SYM '(' expr ',' expr_list ')'
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	  { $5->push_front($3); $$= new Item_func_max(*$5); }
	| LEAST_SYM '(' expr ',' expr_list ')'
	  { $5->push_front($3); $$= new Item_func_min(*$5); }
4921
	| LOG_SYM '(' expr ')'
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	  { $$= new Item_func_log($3); }
4923
	| LOG_SYM '(' expr ',' expr ')'
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	  { $$= new Item_func_log($3, $5); }
4925
	| MASTER_POS_WAIT '(' expr ',' expr ')'
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	  {
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	    $$= new Item_master_pos_wait($3, $5);
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	    Lex->safe_to_cache_query=0;
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		  }
4930
	| MASTER_POS_WAIT '(' expr ',' expr ',' expr ')'
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	  {
4932
	    $$= new Item_master_pos_wait($3, $5, $7);
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	    Lex->safe_to_cache_query=0;
4934
	  }
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	| MICROSECOND_SYM '(' expr ')'
	  { $$= new Item_func_microsecond($3); }
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	| MINUTE_SYM '(' expr ')'
	  { $$= new Item_func_minute($3); }
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	| MOD_SYM '(' expr ',' expr ')'
	  { $$ = new Item_func_mod( $3, $5); }
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	| MONTH_SYM '(' expr ')'
	  { $$= new Item_func_month($3); }
	| NOW_SYM optional_braces
4944
	  { $$= new Item_func_now_local(); Lex->safe_to_cache_query=0;}
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	| NOW_SYM '(' expr ')'
4946
	  { $$= new Item_func_now_local($3); Lex->safe_to_cache_query=0;}
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	| PASSWORD '(' expr ')'
4948
	  {
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	    $$= YYTHD->variables.old_passwords ?
              (Item *) new Item_func_old_password($3) :
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	      (Item *) new Item_func_password($3);
	  }
	| OLD_PASSWORD '(' expr ')'
	  { $$=  new Item_func_old_password($3); }
4955
	| POSITION_SYM '(' bit_expr IN_SYM expr ')'
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	  { $$ = new Item_func_locate($5,$3); }
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	| QUARTER_SYM '(' expr ')'
	  { $$ = new Item_func_quarter($3); }
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	| RAND '(' expr ')'
4960
	  { $$= new Item_func_rand($3); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| RAND '(' ')'
4962
	  { $$= new Item_func_rand(); Lex->uncacheable(UNCACHEABLE_RAND);}
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	| REPLACE '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_replace($3,$5,$7); }
	| RIGHT '(' expr ',' expr ')'
	  { $$= new Item_func_right($3,$5); }
	| ROUND '(' expr ')'
	  { $$= new Item_func_round($3, new Item_int((char*)"0",0,1),0); }
	| ROUND '(' expr ',' expr ')' { $$= new Item_func_round($3,$5,0); }
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	| ROW_COUNT_SYM '(' ')'
	  {
	    $$= new Item_func_row_count();
	    Lex->safe_to_cache_query= 0;
	  }
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	| SUBDATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_date_add_interval($3, $5, INTERVAL_DAY, 1);}
	| SUBDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
	  { $$= new Item_date_add_interval($3, $6, $7, 1); }
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	| SECOND_SYM '(' expr ')'
	  { $$= new Item_func_second($3); }
	| SUBSTRING '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr ',' expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING '(' expr FROM expr FOR_SYM expr ')'
	  { $$= new Item_func_substr($3,$5,$7); }
	| SUBSTRING '(' expr FROM expr ')'
	  { $$= new Item_func_substr($3,$5); }
	| SUBSTRING_INDEX '(' expr ',' expr ',' expr ')'
	  { $$= new Item_func_substr_index($3,$5,$7); }
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	| SYSDATE optional_braces
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          {
            if (global_system_variables.sysdate_is_now == 0)
              $$= new Item_func_sysdate_local();
            else $$= new Item_func_now_local();
            Lex->safe_to_cache_query=0;
          }
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	| SYSDATE '(' expr ')'
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          {
            if (global_system_variables.sysdate_is_now == 0)
              $$= new Item_func_sysdate_local($3);
            else $$= new Item_func_now_local($3);
            Lex->safe_to_cache_query=0;
          }
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	| TIME_SYM '(' expr ')'
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	  { $$= new Item_time_typecast($3); }
	| TIMESTAMP '(' expr ')'
	  { $$= new Item_datetime_typecast($3); }
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	| TIMESTAMP '(' expr ',' expr ')'
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	  { $$= new Item_func_add_time($3, $5, 1, 0); }
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	| TIMESTAMP_ADD '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_date_add_interval($7,$5,$3,0); }
	| TIMESTAMP_DIFF '(' interval_time_st ',' expr ',' expr ')'
	  { $$= new Item_func_timestamp_diff($5,$7,$3); }
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5015
	| TRIM '(' expr ')'
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	  { $$= new Item_func_trim($3); }
	| TRIM '(' LEADING expr FROM expr ')'
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	  { $$= new Item_func_ltrim($6,$4); }
5019
	| TRIM '(' TRAILING expr FROM expr ')'
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	  { $$= new Item_func_rtrim($6,$4); }
5021
	| TRIM '(' BOTH expr FROM expr ')'
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	  { $$= new Item_func_trim($6,$4); }
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	| TRIM '(' LEADING FROM expr ')'
	 { $$= new Item_func_ltrim($5); }
	| TRIM '(' TRAILING FROM expr ')'
	  { $$= new Item_func_rtrim($5); }
	| TRIM '(' BOTH FROM expr ')'
	  { $$= new Item_func_trim($5); }
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	| TRIM '(' expr FROM expr ')'
	  { $$= new Item_func_trim($5,$3); }
5031 5032
	| TRUNCATE_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_round($3,$5,1); }
5033
	| ident '.' ident '(' opt_expr_list ')'
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	  {
5035
	    LEX *lex= Lex;
5036
	    sp_name *name= new sp_name($1, $3, true);
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	    name->init_qname(YYTHD);
5039
	    sp_add_used_routine(lex, YYTHD, name, TYPE_ENUM_FUNCTION);
5040
	    if ($5)
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	      $$= new Item_func_sp(Lex->current_context(), name, *$5);
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	    else
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	      $$= new Item_func_sp(Lex->current_context(), name);
5044
	    lex->safe_to_cache_query=0;
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	  }
5046
	| IDENT_sys '(' 
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          {
#ifdef HAVE_DLOPEN
5049
            udf_func *udf= 0;
5050
            LEX *lex= Lex;
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            if (using_udf_functions &&
                (udf= find_udf($1.str, $1.length)) &&
                udf->type == UDFTYPE_AGGREGATE)
            {
              if (lex->current_select->inc_in_sum_expr())
              {
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                my_parse_error(ER(ER_SYNTAX_ERROR));
                MYSQL_YYABORT;
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              }
            }
5061
            lex->current_select->udf_list.push_front(udf);
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#endif
          }
          udf_expr_list ')'
          {
5066
            LEX *lex= Lex;
5067
#ifdef HAVE_DLOPEN
5068
            udf_func *udf;
5069

5070
            if (NULL != (udf= lex->current_select->udf_list.pop()))
5071
            {
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              if (udf->type == UDFTYPE_AGGREGATE)
                Select->in_sum_expr--;

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              switch (udf->returns) {
              case STRING_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_str(udf, *$4);
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                  else
                    $$ = new Item_func_udf_str(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_str(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_str(udf);
                }
                break;
              case REAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_float(udf, *$4);
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                  else
                    $$ = new Item_func_udf_float(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_float(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_float(udf);
                }
                break;
              case INT_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_int(udf, *$4);
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                  else
                    $$ = new Item_func_udf_int(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_int(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_int(udf);
                }
                break;
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              case DECIMAL_RESULT:
                if (udf->type == UDFTYPE_FUNCTION)
                {
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                  if ($4 != NULL)
                    $$ = new Item_func_udf_decimal(udf, *$4);
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                  else
                    $$ = new Item_func_udf_decimal(udf);
                }
                else
                {
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                  if ($4 != NULL)
                    $$ = new Item_sum_udf_decimal(udf, *$4);
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                  else
                    $$ = new Item_sum_udf_decimal(udf);
                }
                break;
5140
              default:
5141
                MYSQL_YYABORT;
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              }
            }
            else
#endif /* HAVE_DLOPEN */
            {
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              THD *thd= lex->thd;
              LEX_STRING db;
5149
              if (lex->copy_db_to(&db.str, &db.length))
5150
                MYSQL_YYABORT;
5151
              sp_name *name= new sp_name(db, $1, false);
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              if (name)
                name->init_qname(thd);
5154

5155
              sp_add_used_routine(lex, YYTHD, name, TYPE_ENUM_FUNCTION);
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              if ($4)
                $$= new Item_func_sp(Lex->current_context(), name, *$4);
5158
              else
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                $$= new Item_func_sp(Lex->current_context(), name);
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            }          
          lex->safe_to_cache_query=0;
5162
          }
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	| UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' expr_list ')'
5164
	  {
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            $$= new Item_func_unique_users($3,atoi($5.str),atoi($7.str), * $9);
	  }
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	| UNIX_TIMESTAMP '(' ')'
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	  {
	    $$= new Item_func_unix_timestamp();
5170
	    Lex->safe_to_cache_query=0;
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	  }
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	| UNIX_TIMESTAMP '(' expr ')'
	  { $$= new Item_func_unix_timestamp($3); }
	| USER '(' ')'
5175
	  { $$= new Item_func_user(); Lex->safe_to_cache_query=0; }
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	| UTC_DATE_SYM optional_braces
	  { $$= new Item_func_curdate_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIME_SYM optional_braces
	  { $$= new Item_func_curtime_utc(); Lex->safe_to_cache_query=0;}
	| UTC_TIMESTAMP_SYM optional_braces
	  { $$= new Item_func_now_utc(); Lex->safe_to_cache_query=0;}
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	| WEEK_SYM '(' expr ')'
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	  {
5184
            $$= new Item_func_week($3,new Item_int((char*) "0",
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				   YYTHD->variables.default_week_format,1));
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          }
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	| WEEK_SYM '(' expr ',' expr ')'
	  { $$= new Item_func_week($3,$5); }
	| YEAR_SYM '(' expr ')'
	  { $$= new Item_func_year($3); }
	| YEARWEEK '(' expr ')'
	  { $$= new Item_func_yearweek($3,new Item_int((char*) "0",0,1)); }
	| YEARWEEK '(' expr ',' expr ')'
	  { $$= new Item_func_yearweek($3, $5); }
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	| BENCHMARK_SYM '(' ulong_num ',' expr ')'
5196
	  {
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	    $$=new Item_func_benchmark($3,$5);
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	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	| EXTRACT_SYM '(' interval FROM expr ')'
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	{ $$=new Item_extract( $3, $5); };
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5202

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geometry_function:
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	  CONTAINS_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_spatial_rel($3, $5, Item_func::SP_CONTAINS_FUNC)); }
	| GEOMFROMTEXT '(' expr ')'
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	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| GEOMFROMWKB '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3)); }
	| GEOMFROMWKB '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_wkb($3, $5)); }
	| GEOMETRYCOLLECTION '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                           Geometry::wkb_geometrycollection,
                           Geometry::wkb_point)); }
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	| LINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_linestring, Geometry::wkb_point)); }
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 	| MULTILINESTRING '(' expr_list ')'
	  { $$= GEOM_NEW( Item_func_spatial_collection(* $3,
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                   Geometry::wkb_multilinestring, Geometry::wkb_linestring)); }
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 	| MLINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MLINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MPOLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| MPOLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| MULTIPOINT '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipoint, Geometry::wkb_point)); }
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 	| MULTIPOLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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                  Geometry::wkb_multipolygon, Geometry::wkb_polygon)); }
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	| POINT_SYM '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_point($3,$5)); }
 	| POINTFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POINTFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| POLYFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	| POLYGON '(' expr_list ')'
	  { $$= GEOM_NEW(Item_func_spatial_collection(* $3,
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	          Geometry::wkb_polygon, Geometry::wkb_linestring)); }
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 	| GEOMCOLLFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| GEOMCOLLFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
 	| LINEFROMTEXT '(' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3)); }
	| LINEFROMTEXT '(' expr ',' expr ')'
	  { $$= GEOM_NEW(Item_func_geometry_from_text($3, $5)); }
	;

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

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

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

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

udf_expr:
	remember_name expr remember_end select_alias
	{
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          udf_func *udf= Select->udf_list.head();
          /*
           Use Item::name as a storage for the attribute value of user
           defined function argument. It is safe to use Item::name
           because the syntax will not allow having an explicit name here.
           See WL#1017 re. udf attributes.
          */
5303
	  if ($4.str)
5304
          {
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            if (!udf)
            {
              /*
                Disallow using AS to specify explicit names for the arguments
                of stored routine calls
              */
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              my_parse_error(ER(ER_SYNTAX_ERROR));
              MYSQL_YYABORT;
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            }

5315
            $2->is_autogenerated_name= FALSE;
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	    $2->set_name($4.str, $4.length, system_charset_info);
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          }
5318
	  else if (udf)
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	    $2->set_name($1, (uint) ($3 - $1), YYTHD->charset());
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	  $$= $2;
	}
	;
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sum_expr:
	AVG_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_avg($3); }
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	| AVG_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_avg_distinct($4); }
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	| BIT_AND  '(' in_sum_expr ')'
	  { $$=new Item_sum_and($3); }
	| BIT_OR  '(' in_sum_expr ')'
	  { $$=new Item_sum_or($3); }
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	| BIT_XOR  '(' in_sum_expr ')'
	  { $$=new Item_sum_xor($3); }
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	| COUNT_SYM '(' opt_all '*' ')'
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	  { $$=new Item_sum_count(new Item_int((int32) 0L,1)); }
	| COUNT_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_count($3); }
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	| COUNT_SYM '(' DISTINCT
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	  { Select->in_sum_expr++; }
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	   expr_list
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	  { Select->in_sum_expr--; }
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	  ')'
	  { $$=new Item_sum_count_distinct(* $5); }
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	| GROUP_UNIQUE_USERS '(' text_literal ',' NUM ',' NUM ',' in_sum_expr ')'
	  { $$= new Item_sum_unique_users($3,atoi($5.str),atoi($7.str),$9); }
	| MIN_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_min($3); }
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/*
   According to ANSI SQL, DISTINCT is allowed and has
   no sence inside MIN and MAX grouping functions; so MIN|MAX(DISTINCT ...)
   is processed like an ordinary MIN | MAX()
 */
	| MIN_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_min($4); }
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	| MAX_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_max($3); }
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	| MAX_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_max($4); }
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	| STD_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_std($3, 0); }
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	| VARIANCE_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_variance($3, 0); }
	| STDDEV_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_std($3, 1); }
	| VAR_SAMP_SYM '(' in_sum_expr ')'
	  { $$=new Item_sum_variance($3, 1); }
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	| SUM_SYM '(' in_sum_expr ')'
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	  { $$=new Item_sum_sum($3); }
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	| SUM_SYM '(' DISTINCT in_sum_expr ')'
	  { $$=new Item_sum_sum_distinct($4); }
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	| GROUP_CONCAT_SYM '(' opt_distinct
	  { Select->in_sum_expr++; }
	  expr_list opt_gorder_clause
	  opt_gconcat_separator
	 ')'
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	  {
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            SELECT_LEX *sel= Select;
	    sel->in_sum_expr--;
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	    $$=new Item_func_group_concat(Lex->current_context(), $3, $5,
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                                          sel->gorder_list, $7);
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	    $5->empty();
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	  };

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variable:
          '@'
          {
            if (! Lex->parsing_options.allows_variable)
            {
              my_error(ER_VIEW_SELECT_VARIABLE, MYF(0));
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              MYSQL_YYABORT;
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            }
          }
          variable_aux
          {
            $$= $3;
          }
          ;

variable_aux:
          ident_or_text SET_VAR expr
          {
            $$= new Item_func_set_user_var($1, $3);
            LEX *lex= Lex;
            lex->uncacheable(UNCACHEABLE_RAND);
          }
        | ident_or_text
          {
            $$= new Item_func_get_user_var($1);
            LEX *lex= Lex;
            lex->uncacheable(UNCACHEABLE_RAND);
          }
        | '@' opt_var_ident_type ident_or_text opt_component
          {
            if ($3.str && $4.str && check_reserved_words(&$3))
            {
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              my_parse_error(ER(ER_SYNTAX_ERROR));
              MYSQL_YYABORT;
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            }
            if (!($$= get_system_var(YYTHD, $2, $3, $4)))
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              MYSQL_YYABORT;
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          }
        ;

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

opt_gconcat_separator:
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    /* empty */
      {
        $$= new (YYTHD->mem_root) String(",", 1, &my_charset_latin1);
      }
    | SEPARATOR_SYM text_string { $$ = $2; };
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opt_gorder_clause:
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	  /* empty */
	  {
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            Select->gorder_list = NULL;
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	  }
	| order_clause
          {
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            SELECT_LEX *select= Select;
            select->gorder_list=
	      (SQL_LIST*) sql_memdup((char*) &select->order_list,
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				     sizeof(st_sql_list));
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	    select->order_list.empty();
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	  };
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in_sum_expr:
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	opt_all
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	{
	  LEX *lex= Lex;
	  if (lex->current_select->inc_in_sum_expr())
	  {
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            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
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	  }
	}
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	expr
	{
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	  Select->in_sum_expr--;
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	  $$= $3;
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	};
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cast_type:
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        BINARY opt_len		{ $$=ITEM_CAST_CHAR; Lex->charset= &my_charset_bin; Lex->dec= 0; }
        | CHAR_SYM opt_len opt_binary	{ $$=ITEM_CAST_CHAR; Lex->dec= 0; }
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	| NCHAR_SYM opt_len	{ $$=ITEM_CAST_CHAR; Lex->charset= national_charset_info; Lex->dec=0; }
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        | SIGNED_SYM		{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | SIGNED_SYM INT_SYM	{ $$=ITEM_CAST_SIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED		{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | UNSIGNED INT_SYM	{ $$=ITEM_CAST_UNSIGNED_INT; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATE_SYM		{ $$=ITEM_CAST_DATE; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | TIME_SYM		{ $$=ITEM_CAST_TIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DATETIME		{ $$=ITEM_CAST_DATETIME; Lex->charset= NULL; Lex->dec=Lex->length= (char*)0; }
        | DECIMAL_SYM float_options { $$=ITEM_CAST_DECIMAL; Lex->charset= NULL; }
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	;

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opt_expr_list:
	/* empty */ { $$= NULL; }
	| expr_list { $$= $1;}
	;

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expr_list:
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	{ Select->expr_list.push_front(new List<Item>); }
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	expr_list2
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	{ $$= Select->expr_list.pop(); };
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expr_list2:
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	expr { Select->expr_list.head()->push_back($1); }
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	| expr_list2 ',' expr { Select->expr_list.head()->push_back($3); };
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ident_list_arg:
          ident_list          { $$= $1; }
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        | '(' ident_list ')'  { $$= $2; };
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ident_list:
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        { Select->expr_list.push_front(new List<Item>); }
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        ident_list2
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        { $$= Select->expr_list.pop(); };
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ident_list2:
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        simple_ident { Select->expr_list.head()->push_back($1); }
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        | ident_list2 ',' simple_ident { Select->expr_list.head()->push_back($3); };
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opt_expr:
	/* empty */      { $$= NULL; }
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	| expr           { $$= $1; };
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opt_else:
	/* empty */    { $$= NULL; }
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	| ELSE expr    { $$= $2; };
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when_list:
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          WHEN_SYM expr THEN_SYM expr
          {
            $$= new List<Item>;
            $$->push_back($2);
            $$->push_back($4);
          }
        | when_list WHEN_SYM expr THEN_SYM expr
          {
            $1->push_back($3);
            $1->push_back($5);
            $$= $1;
          }
        ;
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/* Warning - may return NULL in case of incomplete SELECT */
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table_ref:
        table_factor            { $$=$1; }
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        | join_table
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          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->nest_last_join(lex->thd)))
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              MYSQL_YYABORT;
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          }
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        ;

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

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/*
  Notice that JOIN is a left-associative operation, and it must be parsed
  as such, that is, the parser must process first the left join operand
  then the right one. Such order of processing ensures that the parser
  produces correct join trees which is essential for semantic analysis
  and subsequent optimization phases.
*/
5563
join_table:
5564
/* INNER JOIN variants */
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        /*
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          Use %prec to evaluate production 'table_ref' before 'normal_join'
          so that [INNER | CROSS] JOIN is properly nested as other
          left-associative joins.
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        */
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        table_ref normal_join table_ref %prec TABLE_REF_PRIORITY
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          { MYSQL_YYABORT_UNLESS($1 && ($$=$3)); }
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	| table_ref STRAIGHT_JOIN table_factor
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	  { MYSQL_YYABORT_UNLESS($1 && ($$=$3)); $3->straight=1; }
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	| table_ref normal_join table_ref
          ON
          {
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            MYSQL_YYABORT_UNLESS($1 && $3);
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            /* Change the current name resolution context to a local context. */
5579
            if (push_new_name_resolution_context(YYTHD, $1, $3))
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              MYSQL_YYABORT;
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            Select->parsing_place= IN_ON;
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          }
          expr
	  {
            add_join_on($3,$6);
            Lex->pop_context();
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            Select->parsing_place= NO_MATTER;
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          }
        | table_ref STRAIGHT_JOIN table_factor
          ON
          {
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            MYSQL_YYABORT_UNLESS($1 && $3);
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            /* Change the current name resolution context to a local context. */
5594
            if (push_new_name_resolution_context(YYTHD, $1, $3))
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              MYSQL_YYABORT;
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            Select->parsing_place= IN_ON;
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          }
          expr
          {
            $3->straight=1;
            add_join_on($3,$6);
            Lex->pop_context();
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            Select->parsing_place= NO_MATTER;
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          }
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	| table_ref normal_join table_ref
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	  USING
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	  {
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            MYSQL_YYABORT_UNLESS($1 && $3);
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	  }
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	  '(' using_list ')'
5611
          { add_join_natural($1,$3,$7,Select); $$=$3; }
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	| table_ref NATURAL JOIN_SYM table_factor
	  {
5614
            MYSQL_YYABORT_UNLESS($1 && ($$=$4));
5615
            add_join_natural($1,$4,NULL,Select);
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          }

/* LEFT JOIN variants */
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	| table_ref LEFT opt_outer JOIN_SYM table_ref
          ON
          {
5622
            MYSQL_YYABORT_UNLESS($1 && $5);
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            /* Change the current name resolution context to a local context. */
5624
            if (push_new_name_resolution_context(YYTHD, $1, $5))
5625
              MYSQL_YYABORT;
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            Select->parsing_place= IN_ON;
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          }
          expr
	  {
            add_join_on($5,$8);
            Lex->pop_context();
            $5->outer_join|=JOIN_TYPE_LEFT;
            $$=$5;
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            Select->parsing_place= NO_MATTER;
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          }
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	| table_ref LEFT opt_outer JOIN_SYM table_factor
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	  {
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            MYSQL_YYABORT_UNLESS($1 && $5);
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	  }
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	  USING '(' using_list ')'
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          { 
            add_join_natural($1,$5,$9,Select); 
            $5->outer_join|=JOIN_TYPE_LEFT; 
            $$=$5; 
          }
5646
	| table_ref NATURAL LEFT opt_outer JOIN_SYM table_factor
5647
	  {
5648
            MYSQL_YYABORT_UNLESS($1 && $6);
5649
 	    add_join_natural($1,$6,NULL,Select);
5650
	    $6->outer_join|=JOIN_TYPE_LEFT;
5651 5652
	    $$=$6;
	  }
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/* RIGHT JOIN variants */
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	| table_ref RIGHT opt_outer JOIN_SYM table_ref
          ON
          {
5658
            MYSQL_YYABORT_UNLESS($1 && $5);
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            /* Change the current name resolution context to a local context. */
5660
            if (push_new_name_resolution_context(YYTHD, $1, $5))
5661
              MYSQL_YYABORT;
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            Select->parsing_place= IN_ON;
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          }
          expr
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          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
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              MYSQL_YYABORT;
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            add_join_on($$, $8);
            Lex->pop_context();
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            Select->parsing_place= NO_MATTER;
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          }
	| table_ref RIGHT opt_outer JOIN_SYM table_factor
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	  {
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            MYSQL_YYABORT_UNLESS($1 && $5);
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	  }
5677
	  USING '(' using_list ')'
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          {
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
5681
              MYSQL_YYABORT;
5682
            add_join_natural($$,$5,$9,Select);
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          }
	| table_ref NATURAL RIGHT opt_outer JOIN_SYM table_factor
5685
	  {
5686
            MYSQL_YYABORT_UNLESS($1 && $6);
5687
	    add_join_natural($6,$1,NULL,Select);
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	    LEX *lex= Lex;
            if (!($$= lex->current_select->convert_right_join()))
5690
              MYSQL_YYABORT;
5691
	  };
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normal_join:
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	JOIN_SYM		{}
	| INNER_SYM JOIN_SYM	{}
	| CROSS JOIN_SYM	{}
	;
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/* Warning - may return NULL in case of incomplete SELECT */
5700
table_factor:
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	{
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	  SELECT_LEX *sel= Select;
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	  sel->use_index_ptr=sel->ignore_index_ptr=0;
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	  sel->table_join_options= 0;
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	}
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        table_ident opt_table_alias opt_key_definition
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	{
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	  LEX *lex= Lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (!($$= sel->add_table_to_list(lex->thd, $2, $3,
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					   sel->get_table_join_options(),
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					   lex->lock_option,
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					   sel->get_use_index(),
					   sel->get_ignore_index())))
5715
	    MYSQL_YYABORT;
5716
          sel->add_joined_table($$);
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	}
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	| '{' ident table_ref LEFT OUTER JOIN_SYM table_ref
          ON
          {
            /* Change the current name resolution context to a local context. */
5722
            if (push_new_name_resolution_context(YYTHD, $3, $7))
5723
              MYSQL_YYABORT;
5724

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          }
          expr '}'
	  {
5728
	    LEX *lex= Lex;
5729
            MYSQL_YYABORT_UNLESS($3 && $7);
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            add_join_on($7,$10);
            Lex->pop_context();
            $7->outer_join|=JOIN_TYPE_LEFT;
            $$=$7;
5734
            if (!($$= lex->current_select->nest_last_join(lex->thd)))
5735
              MYSQL_YYABORT;
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          }
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	| select_derived_init get_select_lex select_derived2
5738
          {
5739
            LEX *lex= Lex;
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            SELECT_LEX *sel= lex->current_select;
            if ($1)
            {
	      if (sel->set_braces(1))
	      {
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                my_parse_error(ER(ER_SYNTAX_ERROR));
	        MYSQL_YYABORT;
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	      }
              /* select in braces, can't contain global parameters */
	      if (sel->master_unit()->fake_select_lex)
                sel->master_unit()->global_parameters=
                   sel->master_unit()->fake_select_lex;
            }
            if ($2->init_nested_join(lex->thd))
5754
              MYSQL_YYABORT;
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            $$= 0;
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            /* incomplete derived tables return NULL, we must be
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               nested in select_derived rule to be here. */
5758
          }
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	| '(' get_select_lex select_derived union_opt ')' opt_table_alias
	{
          /* Use $2 instead of Lex->current_select as derived table will
             alter value of Lex->current_select. */

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          if (!($3 || $6) && $2->embedding &&
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              !$2->embedding->nested_join->join_list.elements)
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          {
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            /* we have a derived table ($3 == NULL) but no alias,
               Since we are nested in further parentheses so we
               can pass NULL to the outer level parentheses
               Permits parsing of "((((select ...))) as xyz)" */
            $$= 0;
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          }
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          else
          if (!$3)
          {
            /* Handle case of derived table, alias may be NULL if there
               are no outer parentheses, add_table_to_list() will throw
               error in this case */
	    LEX *lex=Lex;
            SELECT_LEX *sel= lex->current_select;
	    SELECT_LEX_UNIT *unit= sel->master_unit();
	    lex->current_select= sel= unit->outer_select();
	    if (!($$= sel->
                  add_table_to_list(lex->thd, new Table_ident(unit), $6, 0,
				    TL_READ,(List<String> *)0,
	                            (List<String> *)0)))
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	      MYSQL_YYABORT;
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            sel->add_joined_table($$);
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            lex->pop_context();
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          }
	  else
          if ($4 || $6)
	  {
            /* simple nested joins cannot have aliases or unions */
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            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
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	  }
          else
            $$= $3;
	}
        ;
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/* handle contents of parentheses in join expression */
5805
select_derived:
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	  get_select_lex
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	  {
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            LEX *lex= Lex;
            if ($1->init_nested_join(lex->thd))
5810
              MYSQL_YYABORT;
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          }
          derived_table_list
          {
            LEX *lex= Lex;
            /* for normal joins, $3 != NULL and end_nested_join() != NULL,
               for derived tables, both must equal NULL */
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            if (!($$= $1->end_nested_join(lex->thd)) && $3)
5819
              MYSQL_YYABORT;
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            if (!$3 && $$)
            {
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              my_parse_error(ER(ER_SYNTAX_ERROR));
	      MYSQL_YYABORT;
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            }
          }
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 	;
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select_derived2:
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        {
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	  LEX *lex= Lex;
5831
	  lex->derived_tables|= DERIVED_SUBQUERY;
5832
          if (lex->sql_command == (int)SQLCOM_HA_READ ||
5833 5834
              lex->sql_command == (int)SQLCOM_KILL ||
              lex->sql_command == (int)SQLCOM_PURGE)
5835
	  {
5836 5837
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
5838
	  }
5839
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE ||
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              mysql_new_select(lex, 1))
5841
	    MYSQL_YYABORT;
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	  mysql_init_select(lex);
5843
	  lex->current_select->linkage= DERIVED_TABLE_TYPE;
5844
	  lex->current_select->parsing_place= SELECT_LIST;
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	}
        select_options select_item_list
	{
5848
	  Select->parsing_place= NO_MATTER;
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	}
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	opt_select_from
5851
        ;
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get_select_lex:
	/* Empty */ { $$= Select; }
        ;

select_derived_init:
          SELECT_SYM
          {
            LEX *lex= Lex;
5861 5862 5863 5864

            if (! lex->parsing_options.allows_derived)
            {
              my_error(ER_VIEW_SELECT_DERIVED, MYF(0));
5865
              MYSQL_YYABORT;
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            }

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

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opt_outer:
	/* empty */	{}
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	| OUTER		{};
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opt_for_join:
        /* empty */
        | FOR_SYM JOIN_SYM;

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

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

interval_time_st:
	DAY_SYM			{ $$=INTERVAL_DAY; }
	| WEEK_SYM		{ $$=INTERVAL_WEEK; }
	| HOUR_SYM		{ $$=INTERVAL_HOUR; }
	| FRAC_SECOND_SYM	{ $$=INTERVAL_MICROSECOND; }
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	| MINUTE_SYM		{ $$=INTERVAL_MINUTE; }
	| MONTH_SYM		{ $$=INTERVAL_MONTH; }
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	| QUARTER_SYM		{ $$=INTERVAL_QUARTER; }
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	| SECOND_SYM		{ $$=INTERVAL_SECOND; }
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	| YEAR_SYM		{ $$=INTERVAL_YEAR; }
        ;
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5983
date_time_type:
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          DATE_SYM              {$$=MYSQL_TIMESTAMP_DATE;}
        | TIME_SYM              {$$=MYSQL_TIMESTAMP_TIME;}
        | DATETIME              {$$=MYSQL_TIMESTAMP_DATETIME;}
        | TIMESTAMP             {$$=MYSQL_TIMESTAMP_DATETIME;}
        ;
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table_alias:
	/* empty */
	| AS
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	| EQ;
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opt_table_alias:
	/* empty */		{ $$=0; }
	| table_alias ident
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	  { $$= (LEX_STRING*) sql_memdup(&$2,sizeof(LEX_STRING)); };
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opt_all:
	/* empty */
	| ALL
	;
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where_clause:
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	/* empty */  { Select->where= 0; }
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	| WHERE
          {
            Select->parsing_place= IN_WHERE;
          }
          expr
6012
	  {
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            SELECT_LEX *select= Select;
	    select->where= $3;
            select->parsing_place= NO_MATTER;
	    if ($3)
	      $3->top_level_item();
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	  }
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 	;
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having_clause:
	/* empty */
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	| HAVING
	  {
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	    Select->parsing_place= IN_HAVING;
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          }
	  expr
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->having= $3;
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	    sel->parsing_place= NO_MATTER;
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	    if ($3)
	      $3->top_level_item();
	  }
6035
	;
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opt_escape:
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	ESCAPE_SYM simple_expr 
          {
            Lex->escape_used= TRUE;
            $$= $2;
          }
6043
	| /* empty */
6044
          {
6045
            Lex->escape_used= FALSE;
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            $$= ((YYTHD->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ?
		 new Item_string("", 0, &my_charset_latin1) :
                 new Item_string("\\", 1, &my_charset_latin1));
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          }
        ;
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/*
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   group by statement in select
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*/

group_clause:
	/* empty */
6059
	| GROUP BY group_list olap_opt;
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group_list:
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	group_list ',' order_ident order_dir
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	  { if (add_group_to_list(YYTHD, $3,(bool) $4)) MYSQL_YYABORT; }
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	| order_ident order_dir
6065
	  { if (add_group_to_list(YYTHD, $1,(bool) $2)) MYSQL_YYABORT; };
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olap_opt:
	/* empty */ {}
6069
	| WITH CUBE_SYM
6070
          {
6071
	    LEX *lex=Lex;
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	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH CUBE",
6075
		       "global union parameters");
6076
	      MYSQL_YYABORT;
6077
	    }
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	    lex->current_select->olap= CUBE_TYPE;
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	    my_error(ER_NOT_SUPPORTED_YET, MYF(0), "CUBE");
6080
	    MYSQL_YYABORT;	/* To be deleted in 5.1 */
6081
	  }
6082
	| WITH ROLLUP_SYM
6083
          {
6084 6085 6086
	    LEX *lex= Lex;
	    if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "WITH ROLLUP",
6088
		       "global union parameters");
6089
	      MYSQL_YYABORT;
6090
	    }
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	    lex->current_select->olap= ROLLUP_TYPE;
6092
	  }
6093
	;
6094

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/*
  Order by statement in ALTER TABLE
*/

alter_order_clause:
          ORDER_SYM BY alter_order_list
        ;

alter_order_list:
          alter_order_list ',' alter_order_item
        | alter_order_item
        ;

alter_order_item:
          simple_ident_nospvar order_dir
          {
            THD *thd= YYTHD;
            bool ascending= ($2 == 1) ? true : false;
            if (add_order_to_list(thd, $1, ascending))
6114
              MYSQL_YYABORT;
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          }
        ;

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/*
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   Order by statement in select
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*/

6122
opt_order_clause:
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	/* empty */
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	| order_clause;
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order_clause:
6127 6128
	ORDER_SYM BY
        {
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	  LEX *lex=Lex;
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          SELECT_LEX *sel= lex->current_select;
          SELECT_LEX_UNIT *unit= sel-> master_unit();
	  if (sel->linkage != GLOBAL_OPTIONS_TYPE &&
	      sel->olap != UNSPECIFIED_OLAP_TYPE)
6134
	  {
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	    my_error(ER_WRONG_USAGE, MYF(0),
                     "CUBE/ROLLUP", "ORDER BY");
6137
	    MYSQL_YYABORT;
6138
	  }
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          if (lex->sql_command != SQLCOM_ALTER_TABLE && !unit->fake_select_lex)
          {
            /*
              A query of the of the form (SELECT ...) ORDER BY order_list is
              executed in the same way as the query
              SELECT ... ORDER BY order_list
              unless the SELECT construct contains ORDER BY or LIMIT clauses.
              Otherwise we create a fake SELECT_LEX if it has not been created
              yet.
            */
            SELECT_LEX *first_sl= unit->first_select();
            if (!first_sl->next_select() &&
                (first_sl->order_list.elements || 
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                 first_sl->select_limit) &&            
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                unit->add_fake_select_lex(lex->thd))
6154
              MYSQL_YYABORT;
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          }
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	} order_list;
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order_list:
	order_list ',' order_ident order_dir
6160
	  { if (add_order_to_list(YYTHD, $3,(bool) $4)) MYSQL_YYABORT; }
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	| order_ident order_dir
6162
	  { if (add_order_to_list(YYTHD, $1,(bool) $2)) MYSQL_YYABORT; };
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order_dir:
	/* empty */ { $$ =  1; }
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	| ASC  { $$ =1; }
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	| DESC { $$ =0; };
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6170 6171 6172
opt_limit_clause_init:
	/* empty */
	{
6173 6174
	  LEX *lex= Lex;
	  SELECT_LEX *sel= lex->current_select;
6175 6176
          sel->offset_limit= 0;
          sel->select_limit= 0;
6177
	}
6178 6179 6180
	| limit_clause {}
	;

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

6186
limit_clause:
6187
	LIMIT limit_options {}
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	;
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limit_options:
6191
	limit_option
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	  {
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            SELECT_LEX *sel= Select;
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            sel->select_limit= $1;
6195
            sel->offset_limit= 0;
6196
	    sel->explicit_limit= 1;
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	  }
6198
	| limit_option ',' limit_option
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $3;
	    sel->offset_limit= $1;
6203
	    sel->explicit_limit= 1;
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	  }
6205
	| limit_option OFFSET_SYM limit_option
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	  {
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	    SELECT_LEX *sel= Select;
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	    sel->select_limit= $1;
	    sel->offset_limit= $3;
6210
	    sel->explicit_limit= 1;
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	  }
	;
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limit_option:
        param_marker
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        {
          ((Item_param *) $1)->set_strict_type(INT_RESULT);
        }
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        | ULONGLONG_NUM { $$= new Item_uint($1.str, $1.length); }
        | LONG_NUM     { $$= new Item_uint($1.str, $1.length); }
        | NUM           { $$= new Item_uint($1.str, $1.length); }
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        ;
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delete_limit_clause:
	/* empty */
	{
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	  LEX *lex=Lex;
6227
	  lex->current_select->select_limit= 0;
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	}
6229
	| LIMIT limit_option
6230 6231
	{
	  SELECT_LEX *sel= Select;
6232
	  sel->select_limit= $2;
6233 6234
	  sel->explicit_limit= 1;
	};
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ulong_num:
          NUM           { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
6238
	| HEX_NUM       { $$= (ulong) strtol($1.str, (char**) 0, 16); }
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	| LONG_NUM      { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM   { int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM	{ int error; $$= (ulong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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ulonglong_num:
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	NUM	    { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| ULONGLONG_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	| LONG_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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        | DECIMAL_NUM  { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
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	| FLOAT_NUM { int error; $$= (ulonglong) my_strtoll10($1.str, (char**) 0, &error); }
	;
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procedure_clause:
	/* empty */
	| PROCEDURE ident			/* Procedure name */
	  {
	    LEX *lex=Lex;
6258 6259 6260 6261

            if (! lex->parsing_options.allows_select_procedure)
            {
              my_error(ER_VIEW_SELECT_CLAUSE, MYF(0), "PROCEDURE");
6262
              MYSQL_YYABORT;
6263 6264
            }

6265 6266
	    if (&lex->select_lex != lex->current_select)
	    {
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	      my_error(ER_WRONG_USAGE, MYF(0), "PROCEDURE", "subquery");
6268
	      MYSQL_YYABORT;
6269
	    }
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	    lex->proc_list.elements=0;
	    lex->proc_list.first=0;
	    lex->proc_list.next= (byte**) &lex->proc_list.first;
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	    if (add_proc_to_list(lex->thd, new Item_field(&lex->
                                                          current_select->
                                                          context,
                                                          NULL,NULL,$2.str)))
6277
	      MYSQL_YYABORT;
6278
	    Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
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	  }
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	  '(' procedure_list ')';
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procedure_list:
	/* empty */ {}
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	| procedure_list2 {};
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procedure_list2:
	procedure_list2 ',' procedure_item
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	| procedure_item;
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procedure_item:
	  remember_name expr
	  {
6294 6295 6296 6297
            THD *thd= YYTHD;
            Lex_input_stream *lip= thd->m_lip;

	    if (add_proc_to_list(thd, $2))
6298
	      MYSQL_YYABORT;
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	    if (!$2->name)
6300 6301
	      $2->set_name($1,(uint) ((char*) lip->tok_end - $1),
                           thd->charset());
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	  }
          ;


select_var_list_init:
	   {
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             LEX *lex=Lex;
	     if (!lex->describe && (!(lex->result= new select_dumpvar())))
6310
	        MYSQL_YYABORT;
6311
	   }
6312
	   select_var_list
6313
	   {}
6314
           ;
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select_var_list:
6317 6318 6319 6320
	   select_var_list ',' select_var_ident
	   | select_var_ident {}
           ;

6321 6322 6323 6324 6325 6326 6327
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
6328 6329 6330 6331 6332
               /*
                 The parser won't create select_result instance only
	         if it's an EXPLAIN.
               */
               DBUG_ASSERT(lex->describe);
6333 6334
	   }
           | ident_or_text
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           {
6336
             LEX *lex=Lex;
6337
	     sp_variable_t *t;
6338

6339
	     if (!lex->spcont || !(t=lex->spcont->find_variable(&$1)))
6340
	     {
6341
	       my_error(ER_SP_UNDECLARED_VAR, MYF(0), $1.str);
6342
	       MYSQL_YYABORT;
6343
	     }
6344 6345
	     if (lex->result)
             {
6346 6347 6348
               my_var *var;
	       ((select_dumpvar *)lex->result)->
                 var_list.push_back(var= new my_var($1,1,t->offset,t->type));
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#ifndef DBUG_OFF
6350
	       if (var)
6351
		 var->sp= lex->sphead;
6352
#endif
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             }
	     else
	     {
               /*
                 The parser won't create select_result instance only
	         if it's an EXPLAIN.
               */
               DBUG_ASSERT(lex->describe);
6361
	     }
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	   }
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           ;
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6365
into:
6366 6367 6368 6369 6370
        INTO
	{
          if (! Lex->parsing_options.allows_select_into)
          {
            my_error(ER_VIEW_SELECT_CLAUSE, MYF(0), "INTO");
6371
            MYSQL_YYABORT;
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          }
	}
        into_destination
        ;

into_destination:
        OUTFILE TEXT_STRING_filesystem
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	{
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          LEX *lex= Lex;
6381
          lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
6382
          if (!(lex->exchange= new sql_exchange($2.str, 0)) ||
6383
              !(lex->result= new select_export(lex->exchange)))
6384
            MYSQL_YYABORT;
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	}
	opt_field_term opt_line_term
6387
	| DUMPFILE TEXT_STRING_filesystem
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	{
6389
	  LEX *lex=Lex;
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	  if (!lex->describe)
	  {
6392
	    lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
6393
	    if (!(lex->exchange= new sql_exchange($2.str,1)))
6394
	      MYSQL_YYABORT;
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	    if (!(lex->result= new select_dump(lex->exchange)))
6396
	      MYSQL_YYABORT;
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	  }
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	}
6399
        | select_var_list_init
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	{
6401
	  Lex->uncacheable(UNCACHEABLE_SIDEEFFECT);
6402 6403
	}
        ;
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/*
  DO statement
*/
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6409
do:	DO_SYM
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	{
	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DO;
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	  mysql_init_select(lex);
	}
	expr_list
	{
	  Lex->insert_list= $3;
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	}
6419 6420
	;

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/*
6422
  Drop : delete tables or index or user
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*/

drop:
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	DROP opt_temporary table_or_tables if_exists table_list opt_restrict
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	{
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	  LEX *lex=Lex;
	  lex->sql_command = SQLCOM_DROP_TABLE;
6430 6431
	  lex->drop_temporary= $2;
	  lex->drop_if_exists= $4;
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	}
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	| DROP INDEX_SYM ident ON table_ident {}
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	  {
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	     LEX *lex=Lex;
	     lex->sql_command= SQLCOM_DROP_INDEX;
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             lex->alter_info.reset();
             lex->alter_info.flags= ALTER_DROP_INDEX;
6439 6440
	     lex->alter_info.drop_list.push_back(new Alter_drop(Alter_drop::KEY,
                                                                $3.str));
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	     if (!lex->current_select->add_table_to_list(lex->thd, $5, NULL,
							TL_OPTION_UPDATING))
6443
	      MYSQL_YYABORT;
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	  }
	| DROP DATABASE if_exists ident
	  {
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	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_DROP_DB;
	    lex->drop_if_exists=$3;
	    lex->name=$4.str;
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	 }
6452
	| DROP FUNCTION_SYM if_exists sp_name
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	  {
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	    LEX *lex=Lex;
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	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "FUNCTION");
6458
	      MYSQL_YYABORT;
6459
	    }
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	    lex->sql_command = SQLCOM_DROP_FUNCTION;
6461 6462 6463 6464 6465 6466 6467 6468
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
	  }
	| DROP PROCEDURE if_exists sp_name
	  {
	    LEX *lex=Lex;
	    if (lex->sphead)
	    {
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	      my_error(ER_SP_NO_DROP_SP, MYF(0), "PROCEDURE");
6470
	      MYSQL_YYABORT;
6471 6472 6473 6474
	    }
	    lex->sql_command = SQLCOM_DROP_PROCEDURE;
	    lex->drop_if_exists= $3;
	    lex->spname= $4;
6475
	  }
6476
	| DROP USER clear_privileges user_list
6477
	  {
6478 6479
	    Lex->sql_command = SQLCOM_DROP_USER;
          }
6480 6481
	| DROP VIEW_SYM if_exists table_list opt_restrict
	  {
6482
	    LEX *lex= Lex;
6483 6484 6485
	    lex->sql_command= SQLCOM_DROP_VIEW;
	    lex->drop_if_exists= $3;
	  }
6486
        | DROP TRIGGER_SYM if_exists sp_name
6487 6488 6489
          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_DROP_TRIGGER;
6490 6491
            lex->drop_if_exists= $3;
            lex->spname= $4;
6492 6493
          }
	;
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table_list:
6496
	table_name
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	| table_list ',' table_name;
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6499
table_name:
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	table_ident
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	{
	  if (!Select->add_table_to_list(YYTHD, $1, NULL, TL_OPTION_UPDATING))
6503
	    MYSQL_YYABORT;
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	}
	;
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if_exists:
6508
	/* empty */ { $$= 0; }
6509 6510
	| IF EXISTS { $$= 1; }
	;
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6512 6513 6514 6515
opt_temporary:
	/* empty */ { $$= 0; }
	| TEMPORARY { $$= 1; }
	;
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/*
** Insert : add new data to table
*/

insert:
6521 6522 6523
	INSERT
	{
	  LEX *lex= Lex;
6524 6525
	  lex->sql_command= SQLCOM_INSERT;
	  lex->duplicates= DUP_ERROR; 
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	  mysql_init_select(lex);
6527 6528 6529
	  /* for subselects */
          lex->lock_option= (using_update_log) ? TL_READ_NO_INSERT : TL_READ;
	} insert_lock_option
6530
	opt_ignore insert2
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	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
6535
	insert_field_spec opt_insert_update
6536
	{}
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	;
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replace:
6540 6541
	REPLACE
	{
6542
	  LEX *lex=Lex;
6543 6544
	  lex->sql_command = SQLCOM_REPLACE;
	  lex->duplicates= DUP_REPLACE;
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	  mysql_init_select(lex);
6546
	}
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	replace_lock_option insert2
	{
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	  Select->set_lock_for_tables($3);
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	  Lex->current_select= &Lex->select_lex;
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	}
	insert_field_spec
6553
	{}
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	;
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insert_lock_option:
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	/* empty */
          {
#ifdef HAVE_QUERY_CACHE
            /*
              If it is SP we do not allow insert optimisation whan result of
              insert visible only after the table unlocking but everyone can
              read table.
            */
6565
            $$= (Lex->sphead ? TL_WRITE_DEFAULT : TL_WRITE_CONCURRENT_INSERT);
6566 6567 6568 6569
#else
            $$= TL_WRITE_CONCURRENT_INSERT;
#endif
          }
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	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; }
	| DELAYED_SYM	{ $$= TL_WRITE_DELAYED; }
	| HIGH_PRIORITY { $$= TL_WRITE; }
6573
	;
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replace_lock_option:
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	opt_low_priority { $$= $1; }
	| DELAYED_SYM	 { $$= TL_WRITE_DELAYED; };
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insert2:
	INTO insert_table {}
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	| insert_table {};
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insert_table:
6584
	table_name
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	{
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	  LEX *lex=Lex;
	  lex->field_list.empty();
	  lex->many_values.empty();
	  lex->insert_list=0;
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	};
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insert_field_spec:
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	insert_values {}
	| '(' ')' insert_values {}
	| '(' fields ')' insert_values {}
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	| SET
	  {
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	    LEX *lex=Lex;
	    if (!(lex->insert_list = new List_item) ||
		lex->many_values.push_back(lex->insert_list))
6601
	      MYSQL_YYABORT;
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6602
	   }
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	   ident_eq_list;
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fields:
	fields ',' insert_ident { Lex->field_list.push_back($3); }
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	| insert_ident		{ Lex->field_list.push_back($1); };
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insert_values:
	VALUES	values_list  {}
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	| VALUE_SYM values_list  {}
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	|     create_select     { Select->set_braces(0);} union_clause {}
	| '(' create_select ')' { Select->set_braces(1);} union_opt {}
6614
        ;
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values_list:
	values_list ','  no_braces
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	| no_braces;
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ident_eq_list:
	ident_eq_list ',' ident_eq_value
	|
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	ident_eq_value;
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ident_eq_value:
6626
	simple_ident_nospvar equal expr_or_default
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	 {
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	  LEX *lex=Lex;
	  if (lex->field_list.push_back($1) ||
	      lex->insert_list->push_back($3))
6631
	    MYSQL_YYABORT;
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	 };
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equal:	EQ		{}
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	| SET_VAR	{}
	;

opt_equal:
	/* empty */	{}
	| equal		{}
	;
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no_braces:
	 '('
	 {
	    if (!(Lex->insert_list = new List_item))
6647
	      MYSQL_YYABORT;
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6648 6649 6650
	 }
	 opt_values ')'
	 {
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6651 6652
	  LEX *lex=Lex;
	  if (lex->many_values.push_back(lex->insert_list))
6653
	    MYSQL_YYABORT;
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6654
	 };
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opt_values:
	/* empty */ {}
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6658
	| values;
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values:
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	values ','  expr_or_default
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	{
	  if (Lex->insert_list->push_back($3))
6664
	    MYSQL_YYABORT;
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6665
	}
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	| expr_or_default
	  {
	    if (Lex->insert_list->push_back($1))
6669
	      MYSQL_YYABORT;
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6670 6671 6672 6673
	  }
	;

expr_or_default:
6674
	expr	  { $$= $1;}
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	| DEFAULT {$$= new Item_default_value(Lex->current_context()); }
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6676
	;
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6678 6679
opt_insert_update:
        /* empty */
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6680
        | ON DUPLICATE_SYM	{ Lex->duplicates= DUP_UPDATE; }
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          KEY_SYM UPDATE_SYM insert_update_list
6682 6683
        ;

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/* Update rows in a table */

update:
6687 6688
	UPDATE_SYM
	{
6689
	  LEX *lex= Lex;
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6690
	  mysql_init_select(lex);
6691
          lex->sql_command= SQLCOM_UPDATE;
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6692
	  lex->lock_option= TL_UNLOCK; 	/* Will be set later */
6693
	  lex->duplicates= DUP_ERROR; 
6694
        }
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6695
        opt_low_priority opt_ignore join_table_list
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6696
	SET update_list
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6697
	{
6698 6699
	  LEX *lex= Lex;
          if (lex->select_lex.table_list.elements > 1)
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            lex->sql_command= SQLCOM_UPDATE_MULTI;
6701 6702 6703
	  else if (lex->select_lex.get_table_list()->derived)
	  {
	    /* it is single table update and it is update of derived table */
6704 6705
	    my_error(ER_NON_UPDATABLE_TABLE, MYF(0),
                     lex->select_lex.get_table_list()->alias, "UPDATE");
6706
	    MYSQL_YYABORT;
6707
	  }
6708 6709 6710 6711 6712 6713
          /*
            In case of multi-update setting write lock for all tables may
            be too pessimistic. We will decrease lock level if possible in
            mysql_multi_update().
          */
          Select->set_lock_for_tables($3);
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6714
	}
6715
	where_clause opt_order_clause delete_limit_clause {}
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6716
	;
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update_list:
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	update_list ',' update_elem
	| update_elem;

update_elem:
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6723
	simple_ident_nospvar equal expr_or_default
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6724
	{
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6725
	  if (add_item_to_list(YYTHD, $1) || add_value_to_list(YYTHD, $3))
6726
	    MYSQL_YYABORT;
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6727 6728 6729 6730 6731 6732 6733
	};

insert_update_list:
	insert_update_list ',' insert_update_elem
	| insert_update_elem;

insert_update_elem:
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6734
	simple_ident_nospvar equal expr_or_default
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6735
	  {
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6736 6737 6738
	  LEX *lex= Lex;
	  if (lex->update_list.push_back($1) || 
	      lex->value_list.push_back($3))
6739
	      MYSQL_YYABORT;
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6740
	  };
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6741 6742

opt_low_priority:
6743
	/* empty */	{ $$= TL_WRITE_DEFAULT; }
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6744
	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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6745 6746 6747 6748

/* Delete rows from a table */

delete:
6749
	DELETE_SYM
6750
	{
6751 6752
	  LEX *lex= Lex;
	  lex->sql_command= SQLCOM_DELETE;
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6753
	  mysql_init_select(lex);
6754
	  lex->lock_option= TL_WRITE_DEFAULT;
6755
	  lex->ignore= 0;
6756
	  lex->select_lex.init_order();
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6757
	}
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6758 6759
	opt_delete_options single_multi {}
	;
6760 6761

single_multi:
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6762 6763
 	FROM table_ident
	{
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6764 6765
	  if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
					 Lex->lock_option))
6766
	    MYSQL_YYABORT;
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6767 6768
	}
	where_clause opt_order_clause
6769
	delete_limit_clause {}
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6770
	| table_wild_list
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6771
	  { mysql_init_multi_delete(Lex); }
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6772
          FROM join_table_list where_clause
6773 6774
          { 
            if (multi_delete_set_locks_and_link_aux_tables(Lex))
6775
              MYSQL_YYABORT;
6776
          }
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6777 6778
	| FROM table_wild_list
	  { mysql_init_multi_delete(Lex); }
6779
	  USING join_table_list where_clause
6780 6781
          { 
            if (multi_delete_set_locks_and_link_aux_tables(Lex))
6782
              MYSQL_YYABORT;
6783
          }
6784
	;
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6785 6786 6787

table_wild_list:
	  table_wild_one {}
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6788
	  | table_wild_list ',' table_wild_one {};
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table_wild_one:
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6791
	ident opt_wild opt_table_alias
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6792
	{
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6793
	  if (!Select->add_table_to_list(YYTHD, new Table_ident($1), $3,
6794 6795
					 TL_OPTION_UPDATING | 
                                         TL_OPTION_ALIAS, Lex->lock_option))
6796
	    MYSQL_YYABORT;
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6797
        }
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6798
	| ident '.' ident opt_wild opt_table_alias
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6799
	  {
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6800 6801
	    if (!Select->add_table_to_list(YYTHD,
					   new Table_ident(YYTHD, $1, $3, 0),
6802 6803 6804
					   $5, 
                                           TL_OPTION_UPDATING | 
                                           TL_OPTION_ALIAS,
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6805
					   Lex->lock_option))
6806
	      MYSQL_YYABORT;
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6807
	  }
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6808
	;
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6809 6810

opt_wild:
6811
	/* empty */	{}
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6812
	| '.' '*'	{};
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6815
opt_delete_options:
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	/* empty */	{}
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	| opt_delete_option opt_delete_options {};
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opt_delete_option:
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	QUICK		{ Select->options|= OPTION_QUICK; }
6821
	| LOW_PRIORITY	{ Lex->lock_option= TL_WRITE_LOW_PRIORITY; }
6822
	| IGNORE_SYM	{ Lex->ignore= 1; };
6823

6824
truncate:
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	TRUNCATE_SYM opt_table_sym table_name
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	{
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	  LEX* lex= Lex;
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	  lex->sql_command= SQLCOM_TRUNCATE;
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	  lex->select_lex.options= 0;
6830
          lex->select_lex.sql_cache= SELECT_LEX::SQL_CACHE_UNSPECIFIED;
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	  lex->select_lex.init_order();
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	}
	;
6834

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opt_table_sym:
	/* empty */
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	| TABLE_SYM;
6838

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/* Show things */

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show:	SHOW
	{
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	  LEX *lex=Lex;
	  lex->wild=0;
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          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
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	  bzero((char*) &lex->create_info,sizeof(lex->create_info));
	}
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	show_param
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	{}
	;
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show_param:
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         DATABASES wild_and_where
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         {
           LEX *lex= Lex;
           lex->sql_command= SQLCOM_SELECT;
           lex->orig_sql_command= SQLCOM_SHOW_DATABASES;
           if (prepare_schema_table(YYTHD, lex, 0, SCH_SCHEMATA))
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             MYSQL_YYABORT;
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         }
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         | opt_full TABLES opt_db wild_and_where
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           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLES;
6868
             lex->select_lex.db= $3;
6869
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_NAMES))
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               MYSQL_YYABORT;
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           }
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         | opt_full TRIGGERS_SYM opt_db wild_and_where
           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TRIGGERS;
             lex->select_lex.db= $3;
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TRIGGERS))
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               MYSQL_YYABORT;
6880
           }
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         | TABLE_SYM STATUS_SYM opt_db wild_and_where
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           {
             LEX *lex= Lex;
             lex->sql_command= SQLCOM_SELECT;
             lex->orig_sql_command= SQLCOM_SHOW_TABLE_STATUS;
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             lex->select_lex.db= $3;
6887
             if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLES))
6888
               MYSQL_YYABORT;
6889
           }
6890
        | OPEN_SYM TABLES opt_db wild_and_where
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	  {
6892
	    LEX *lex= Lex;
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            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_OPEN_TABLES;
6895
	    lex->select_lex.db= $3;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_OPEN_TABLES))
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              MYSQL_YYABORT;
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	  }
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	| ENGINE_SYM storage_engines 
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	  { Lex->create_info.db_type= $2; }
	  show_engine_param
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	| opt_full COLUMNS from_or_in table_ident opt_db wild_and_where
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	  {
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 	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SELECT;
	    lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
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	    if ($5)
	      $4->change_db($5);
	    if (prepare_schema_table(YYTHD, lex, $4, SCH_COLUMNS))
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	      MYSQL_YYABORT;
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	  }
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        | NEW_SYM MASTER_SYM FOR_SYM SLAVE WITH MASTER_LOG_FILE_SYM EQ
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	  TEXT_STRING_sys AND_SYM MASTER_LOG_POS_SYM EQ ulonglong_num
	  AND_SYM MASTER_SERVER_ID_SYM EQ
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	ulong_num
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          {
	    Lex->sql_command = SQLCOM_SHOW_NEW_MASTER;
	    Lex->mi.log_file_name = $8.str;
	    Lex->mi.pos = $12;
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	    Lex->mi.server_id = $16;
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          }
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        | master_or_binary LOGS_SYM
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          {
	    Lex->sql_command = SQLCOM_SHOW_BINLOGS;
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          }
        | SLAVE HOSTS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_HOSTS;
          }
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        | BINLOG_SYM EVENTS_SYM binlog_in binlog_from
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          {
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	    LEX *lex= Lex;
	    lex->sql_command= SQLCOM_SHOW_BINLOG_EVENTS;
6934
          } opt_limit_clause_init
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        | keys_or_index from_or_in table_ident opt_db where_clause
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_KEYS;
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	    if ($4)
	      $3->change_db($4);
            if (prepare_schema_table(YYTHD, lex, $3, SCH_STATISTICS))
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              MYSQL_YYABORT;
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	  }
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	| COLUMN_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_COLUMN_TYPES;
	  }
	| TABLE_SYM TYPES_SYM
	  {
	    LEX *lex=Lex;
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	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
	    WARN_DEPRECATED("SHOW TABLE TYPES", "SHOW [STORAGE] ENGINES");
	  }
	| opt_storage ENGINES_SYM
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
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	  }
	| PRIVILEGES
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_PRIVILEGES;
	  }
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        | COUNT_SYM '(' '*' ')' WARNINGS
6967
          { (void) create_select_for_variable("warning_count"); }
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        | COUNT_SYM '(' '*' ')' ERRORS
6969
	  { (void) create_select_for_variable("error_count"); }
6970
        | WARNINGS opt_limit_clause_init
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          { Lex->sql_command = SQLCOM_SHOW_WARNS;}
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        | ERRORS opt_limit_clause_init
6973
          { Lex->sql_command = SQLCOM_SHOW_ERRORS;}
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        | opt_var_type STATUS_SYM wild_and_where
6975
          {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS;
6979
            lex->option_type= $1;
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            if (prepare_schema_table(YYTHD, lex, 0, SCH_STATUS))
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              MYSQL_YYABORT;
6982
	  }	
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        | INNOBASE_SYM STATUS_SYM
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          { Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS; WARN_DEPRECATED("SHOW INNODB STATUS", "SHOW ENGINE INNODB STATUS"); }
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        | MUTEX_SYM STATUS_SYM
          { Lex->sql_command = SQLCOM_SHOW_MUTEX_STATUS; }
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	| opt_full PROCESSLIST_SYM
	  { Lex->sql_command= SQLCOM_SHOW_PROCESSLIST;}
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        | opt_var_type  VARIABLES wild_and_where
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	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_VARIABLES;
6994
            lex->option_type= $1;
6995
            if (prepare_schema_table(YYTHD, lex, 0, SCH_VARIABLES))
6996
              MYSQL_YYABORT;
6997
	  }
6998
        | charset wild_and_where
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_CHARSETS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_CHARSETS))
7004
              MYSQL_YYABORT;
7005
          }
7006
        | COLLATION_SYM wild_and_where
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          {
            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_COLLATIONS;
            if (prepare_schema_table(YYTHD, lex, 0, SCH_COLLATIONS))
7012
              MYSQL_YYABORT;
7013
          }
7014
	| BERKELEY_DB_SYM LOGS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW BDB LOGS", "SHOW ENGINE BDB LOGS"); }
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	| LOGS_SYM
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	  { Lex->sql_command= SQLCOM_SHOW_LOGS; WARN_DEPRECATED("SHOW LOGS", "SHOW ENGINE BDB LOGS"); }
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	| GRANTS
	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    LEX_USER *curr_user;
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            if (!(curr_user= (LEX_USER*) lex->thd->alloc(sizeof(st_lex_user))))
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              MYSQL_YYABORT;
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            bzero(curr_user, sizeof(st_lex_user));
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	    lex->grant_user= curr_user;
	  }
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	| GRANTS FOR_SYM user
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	  {
	    LEX *lex=Lex;
	    lex->sql_command= SQLCOM_SHOW_GRANTS;
	    lex->grant_user=$3;
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	    lex->grant_user->password=null_lex_str;
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	  }
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	| CREATE DATABASE opt_if_not_exists ident
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	  {
	    Lex->sql_command=SQLCOM_SHOW_CREATE_DB;
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	    Lex->create_info.options=$3;
	    Lex->name=$4.str;
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	  }
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        | CREATE TABLE_SYM table_ident
          {
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            LEX *lex= Lex;
	    lex->sql_command = SQLCOM_SHOW_CREATE;
	    if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL,0))
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	      MYSQL_YYABORT;
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            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))
7054
	      MYSQL_YYABORT;
7055
            lex->only_view= 1;
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	  }
        | MASTER_SYM STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_MASTER_STAT;
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          }
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        | SLAVE STATUS_SYM
          {
	    Lex->sql_command = SQLCOM_SHOW_SLAVE_STAT;
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          }
	| CREATE PROCEDURE sp_name
	  {
	    LEX *lex= Lex;

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

	    lex->sql_command = SQLCOM_SHOW_CREATE_FUNC;
	    lex->spname= $3;
	  }
7079
	| PROCEDURE STATUS_SYM wild_and_where
7080
	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_PROC;
7084
	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
7085
	      MYSQL_YYABORT;
7086
            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
7087
              MYSQL_YYABORT;
7088
	  }
7089
	| FUNCTION_SYM STATUS_SYM wild_and_where
7090
	  {
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            LEX *lex= Lex;
            lex->sql_command= SQLCOM_SELECT;
            lex->orig_sql_command= SQLCOM_SHOW_STATUS_FUNC;
7094
	    if (!sp_add_to_query_tables(YYTHD, lex, "mysql", "proc", TL_READ))
7095
	      MYSQL_YYABORT;
7096
            if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
7097
              MYSQL_YYABORT;
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	  }
        | PROCEDURE CODE_SYM sp_name
          {
#ifdef DBUG_OFF
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            my_parse_error(ER(ER_SYNTAX_ERROR));
            MYSQL_YYABORT;
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#else
            Lex->sql_command= SQLCOM_SHOW_PROC_CODE;
	    Lex->spname= $3;
#endif
          }
        | FUNCTION_SYM CODE_SYM sp_name
          {
#ifdef DBUG_OFF
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            my_parse_error(ER(ER_SYNTAX_ERROR));
            MYSQL_YYABORT;
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#else
            Lex->sql_command= SQLCOM_SHOW_FUNC_CODE;
	    Lex->spname= $3;
#endif
          }
        ;
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show_engine_param:
	STATUS_SYM
	  {
	    switch (Lex->create_info.db_type) {
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	    case DB_TYPE_NDBCLUSTER:
	      Lex->sql_command = SQLCOM_SHOW_NDBCLUSTER_STATUS;
	      break;
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	    case DB_TYPE_INNODB:
	      Lex->sql_command = SQLCOM_SHOW_INNODB_STATUS;
	      break;
	    default:
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	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "STATUS");
7133
	      MYSQL_YYABORT;
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	    }
	  }
	| LOGS_SYM
	  {
	    switch (Lex->create_info.db_type) {
	    case DB_TYPE_BERKELEY_DB:
	      Lex->sql_command = SQLCOM_SHOW_LOGS;
	      break;
	    default:
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	      my_error(ER_NOT_SUPPORTED_YET, MYF(0), "LOGS");
7144
	      MYSQL_YYABORT;
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	    }
	  };

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master_or_binary:
	MASTER_SYM
	| BINARY;

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opt_storage:
	/* empty */
	| STORAGE_SYM;

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

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/* A Oracle compatible synonym for show */
describe:
	describe_command table_ident
	{
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          LEX *lex= Lex;
          lex->lock_option= TL_READ;
          mysql_init_select(lex);
          lex->current_select->parsing_place= SELECT_LIST;
          lex->sql_command= SQLCOM_SELECT;
          lex->orig_sql_command= SQLCOM_SHOW_FIELDS;
          lex->select_lex.db= 0;
          lex->verbose= 0;
          if (prepare_schema_table(YYTHD, lex, $2, SCH_COLUMNS))
7203
	    MYSQL_YYABORT;
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	}
7205
	opt_describe_column {}
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	| describe_command opt_extended_describe
	  { Lex->describe|= DESCRIBE_NORMAL; }
	  select
7209
          {
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	    LEX *lex=Lex;
7211
	    lex->select_lex.options|= SELECT_DESCRIBE;
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	  }
	;
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describe_command:
	DESC
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	| DESCRIBE;
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opt_extended_describe:
	/* empty */ {}
	| EXTENDED_SYM { Lex->describe|= DESCRIBE_EXTENDED; }
	;

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

flush:
7234
	FLUSH_SYM opt_no_write_to_binlog
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	{
	  LEX *lex=Lex;
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	  lex->sql_command= SQLCOM_FLUSH;
          lex->type= 0;
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          lex->no_write_to_binlog= $2;
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	}
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	flush_options
	{}
	;
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flush_options:
	flush_options ',' flush_option
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	| flush_option;
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flush_option:
7250
	table_or_tables	{ Lex->type|= REFRESH_TABLES; } opt_table_list {}
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	| TABLES WITH READ_SYM LOCK_SYM { Lex->type|= REFRESH_TABLES | REFRESH_READ_LOCK; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE_FREE; }
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	| HOSTS_SYM	{ Lex->type|= REFRESH_HOSTS; }
	| PRIVILEGES	{ Lex->type|= REFRESH_GRANT; }
	| LOGS_SYM	{ Lex->type|= REFRESH_LOG; }
	| STATUS_SYM	{ Lex->type|= REFRESH_STATUS; }
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        | SLAVE         { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM    { Lex->type|= REFRESH_MASTER; }
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	| DES_KEY_FILE	{ Lex->type|= REFRESH_DES_KEY_FILE; }
 	| RESOURCES     { Lex->type|= REFRESH_USER_RESOURCES; };
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opt_table_list:
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	/* empty */  {;}
	| table_list {;};
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reset:
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	RESET_SYM
	{
	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RESET; lex->type=0;
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	} reset_options
	{}
	;

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reset_options:
	reset_options ',' reset_option
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	| reset_option;
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reset_option:
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        SLAVE                 { Lex->type|= REFRESH_SLAVE; }
        | MASTER_SYM          { Lex->type|= REFRESH_MASTER; }
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	| QUERY_SYM CACHE_SYM { Lex->type|= REFRESH_QUERY_CACHE;};
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purge:
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	PURGE
	{
	  LEX *lex=Lex;
	  lex->type=0;
7289
          lex->sql_command = SQLCOM_PURGE;
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	} purge_options
	{}
	;

purge_options:
7295
	master_or_binary LOGS_SYM purge_option
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	;
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purge_option:
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        TO_SYM TEXT_STRING_sys
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        {
	   Lex->to_log = $2.str;
        }
	| BEFORE_SYM expr
	{
7305 7306 7307 7308
	  LEX *lex= Lex;
	  lex->value_list.empty();
	  lex->value_list.push_front($2);
	  lex->sql_command= SQLCOM_PURGE_BEFORE;
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	}
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	;
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/* kill threads */

kill:
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	KILL_SYM { Lex->sql_command= SQLCOM_KILL; } kill_option expr
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	{
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	  LEX *lex=Lex;
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	  lex->value_list.empty();
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	  lex->value_list.push_front($4);
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	};
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kill_option:
	/* empty */	 { Lex->type= 0; }
	| CONNECTION_SYM { Lex->type= 0; }
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	| QUERY_SYM      { Lex->type= ONLY_KILL_QUERY; }
        ;
7327

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/* change database */

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

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load:   LOAD DATA_SYM
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        {
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          THD *thd= YYTHD;
          LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;

7345 7346 7347
	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOAD DATA");
7348
	    MYSQL_YYABORT;
7349
	  }
7350
          lex->fname_start= lip->ptr;
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        }
        load_data
        {}
        |
        LOAD TABLE_SYM table_ident FROM MASTER_SYM
        {
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	  LEX *lex=Lex;
	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOAD TABLE");
7361
	    MYSQL_YYABORT;
7362 7363
	  }
          lex->sql_command = SQLCOM_LOAD_MASTER_TABLE;
7364
          WARN_DEPRECATED("LOAD TABLE FROM MASTER",
7365 7366
                          "mysqldump or future "
                          "BACKUP/RESTORE DATABASE facility");
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          if (!Select->add_table_to_list(YYTHD, $3, NULL, TL_OPTION_UPDATING))
7368
            MYSQL_YYABORT;
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        };

load_data:
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	load_data_lock opt_local INFILE TEXT_STRING_filesystem
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	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_LOAD;
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	  lex->lock_option= $1;
	  lex->local_file=  $2;
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	  lex->duplicates= DUP_ERROR;
	  lex->ignore= 0;
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	  if (!(lex->exchange= new sql_exchange($4.str, 0)))
7381
	    MYSQL_YYABORT;
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        }
        opt_duplicate INTO
        {
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          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;
	  lex->fname_end= lip->ptr;
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	}
7390
        TABLE_SYM table_ident
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        {
7392 7393 7394
          LEX *lex=Lex;
          if (!Select->add_table_to_list(YYTHD, $10, NULL, TL_OPTION_UPDATING,
                                         lex->lock_option))
7395
            MYSQL_YYABORT;
7396 7397 7398
          lex->field_list.empty();
          lex->update_list.empty();
          lex->value_list.empty();
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        }
7400 7401
        opt_load_data_charset
	{ Lex->exchange->cs= $12; }
7402 7403 7404
        opt_field_term opt_line_term opt_ignore_lines opt_field_or_var_spec
        opt_load_data_set_spec
        {}
7405
        |
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	FROM MASTER_SYM
7407 7408
        {
	  Lex->sql_command = SQLCOM_LOAD_MASTER_DATA;
7409
          WARN_DEPRECATED("LOAD DATA FROM MASTER",
7410 7411
                          "mysqldump or future "
                          "BACKUP/RESTORE DATABASE facility");
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        };
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opt_local:
	/* empty */	{ $$=0;}
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	| LOCAL_SYM	{ $$=1;};
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load_data_lock:
7419
	/* empty */	{ $$= TL_WRITE_DEFAULT; }
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	| CONCURRENT
          {
#ifdef HAVE_QUERY_CACHE
            /*
              Ignore this option in SP to avoid problem with query cache
            */
            if (Lex->sphead != 0)
7427
              $$= TL_WRITE_DEFAULT;
7428
            else
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#endif
              $$= TL_WRITE_CONCURRENT_INSERT;
          }
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	| LOW_PRIORITY	{ $$= TL_WRITE_LOW_PRIORITY; };
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opt_duplicate:
	/* empty */	{ Lex->duplicates=DUP_ERROR; }
	| REPLACE	{ Lex->duplicates=DUP_REPLACE; }
7438
	| IGNORE_SYM	{ Lex->ignore= 1; };
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opt_field_term:
	/* empty */
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	| COLUMNS field_term_list;
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field_term_list:
	field_term_list field_term
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	| field_term;
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field_term:
7449 7450
	TERMINATED BY text_string 
          {
7451
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->field_term= $3;
          }
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	| OPTIONALLY ENCLOSED BY text_string
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	  {
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            LEX *lex= Lex;
7457
            DBUG_ASSERT(lex->exchange != 0);
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            lex->exchange->enclosed= $4;
            lex->exchange->opt_enclosed= 1;
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	  }
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        | ENCLOSED BY text_string
7462
          {
7463
            DBUG_ASSERT(Lex->exchange != 0);
7464 7465
            Lex->exchange->enclosed= $3;
          }
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        | ESCAPED BY text_string
7467
          {
7468
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->escaped= $3;
          };
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opt_line_term:
	/* empty */
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	| LINES line_term_list;
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line_term_list:
	line_term_list line_term
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	| line_term;
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line_term:
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        TERMINATED BY text_string
7482
          {
7483
            DBUG_ASSERT(Lex->exchange != 0);
7484 7485
            Lex->exchange->line_term= $3;
          }
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        | STARTING BY text_string
7487
          {
7488
            DBUG_ASSERT(Lex->exchange != 0);
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            Lex->exchange->line_start= $3;
          };
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opt_ignore_lines:
	/* empty */
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        | IGNORE_SYM NUM LINES
          {
7496
            DBUG_ASSERT(Lex->exchange != 0);
7497 7498
            Lex->exchange->skip_lines= atol($2.str);
          };
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opt_field_or_var_spec:
	/* empty */	          { }
	| '(' fields_or_vars ')'  { }
	| '(' ')'	          { };

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

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


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/* Common definitions */

text_literal:
7526
	TEXT_STRING_literal
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	{
	  THD *thd= YYTHD;
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	  $$ = new Item_string($1.str,$1.length,thd->variables.collation_connection);
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	}
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	| NCHAR_STRING
7532
	{ $$=  new Item_string($1.str,$1.length,national_charset_info); }
7533
	| UNDERSCORE_CHARSET TEXT_STRING
7534
	  { $$ = new Item_string($2.str,$2.length,Lex->underscore_charset); }
7535
	| text_literal TEXT_STRING_literal
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	  { ((Item_string*) $1)->append($2.str,$2.length); }
	;
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text_string:
7540
	TEXT_STRING_literal
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	{ $$=  new (YYTHD->mem_root) String($1.str,$1.length,YYTHD->variables.collation_connection); }
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	| HEX_NUM
	  {
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	    Item *tmp= new Item_hex_string($1.str, $1.length);
7545
	    /*
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	      it is OK only emulate fix_fields, because we need only
7547 7548 7549
              value of constant
	    */
	    $$= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
7551
	      (String*) 0;
7552
	  }
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        | BIN_NUM
          {
	    Item *tmp= new Item_bin_string($1.str, $1.length);
	    /*
	      it is OK only emulate fix_fields, because we need only
              value of constant
	    */
	    $$= tmp ? tmp->quick_fix_field(), tmp->val_str((String*) 0) :
		      (String*) 0;
          }
7563 7564
	;

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param_marker:
7566
        PARAM_MARKER
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        {
7568
          THD *thd= YYTHD;
7569
	  LEX *lex= thd->lex;
7570
          Lex_input_stream *lip= thd->m_lip;
7571 7572 7573 7574
          Item_param *item;
          if (! lex->parsing_options.allows_variable)
          {
            my_error(ER_VIEW_SELECT_VARIABLE, MYF(0));
7575
            MYSQL_YYABORT;
7576
          }
7577
          item= new Item_param((uint) (lip->tok_start - thd->query));
7578
          if (!($$= item) || lex->param_list.push_back(item))
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          {
7580
            my_message(ER_OUT_OF_RESOURCES, ER(ER_OUT_OF_RESOURCES), MYF(0));
7581
            MYSQL_YYABORT;
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          }
7583 7584 7585
        }
	;

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signed_literal:
	literal		{ $$ = $1; }
	| '+' NUM_literal { $$ = $2; }
7589 7590
	| '-' NUM_literal
	  {
7591
	    $2->max_length++;
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	    $$= $2->neg();
7593
	  }
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	;


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literal:
	text_literal	{ $$ =	$1; }
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	| NUM_literal	{ $$ = $1; }
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	| NULL_SYM
          {
            $$ = new Item_null();
            YYTHD->m_lip->next_state=MY_LEX_OPERATOR_OR_IDENT;
          }
7605 7606
	| FALSE_SYM	{ $$= new Item_int((char*) "FALSE",0,1); }
	| TRUE_SYM	{ $$= new Item_int((char*) "TRUE",1,1); }
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	| HEX_NUM	{ $$ =	new Item_hex_string($1.str, $1.length);}
	| BIN_NUM	{ $$= new Item_bin_string($1.str, $1.length); }
7609
	| UNDERSCORE_CHARSET HEX_NUM
7610
	  {
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	    Item *tmp= new Item_hex_string($2.str, $2.length);
7612
	    /*
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	      it is OK only emulate fix_fieds, because we need only
7614 7615 7616
              value of constant
	    */
	    String *str= tmp ?
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	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
7618
	      (String*) 0;
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	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
7621
				Lex->underscore_charset);
7622
	  }
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	| UNDERSCORE_CHARSET BIN_NUM
          {
	    Item *tmp= new Item_bin_string($2.str, $2.length);
	    /*
	      it is OK only emulate fix_fieds, because we need only
              value of constant
	    */
	    String *str= tmp ?
	      tmp->quick_fix_field(), tmp->val_str((String*) 0) :
	      (String*) 0;
	    $$= new Item_string(str ? str->ptr() : "",
				str ? str->length() : 0,
				Lex->charset);
          }
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	| DATE_SYM text_literal { $$ = $2; }
	| TIME_SYM text_literal { $$ = $2; }
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	| TIMESTAMP text_literal { $$ = $2; };
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7641
NUM_literal:
7642 7643
	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); }
7644
	| ULONGLONG_NUM	{ $$ =	new Item_uint($1.str, $1.length); }
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        | DECIMAL_NUM
7646
	{
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           $$= new Item_decimal($1.str, $1.length, YYTHD->charset());
7648 7649
	   if (YYTHD->net.report_error)
	   {
7650
	     MYSQL_YYABORT;
7651 7652 7653 7654 7655 7656 7657
	   }
	}
	| FLOAT_NUM
	{
	   $$ =	new Item_float($1.str, $1.length);
	   if (YYTHD->net.report_error)
	   {
7658
	     MYSQL_YYABORT;
7659 7660
	   }
	}
7661
	;
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/**********************************************************************
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** Creating different items.
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**********************************************************************/

insert_ident:
7668
	simple_ident_nospvar { $$=$1; }
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	| table_wild	 { $$=$1; };
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table_wild:
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	ident '.' '*'
7673
	{
7674
          SELECT_LEX *sel= Select;
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	  $$ = new Item_field(Lex->current_context(), NullS, $1.str, "*");
7676
	  sel->with_wild++;
7677
	}
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	| ident '.' ident '.' '*'
7679
	{
7680
          SELECT_LEX *sel= Select;
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	  $$ = new Item_field(Lex->current_context(), (YYTHD->client_capabilities &
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                             CLIENT_NO_SCHEMA ? NullS : $1.str),
                             $3.str,"*");
7684
	  sel->with_wild++;
7685 7686
	}
	;
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order_ident:
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	expr { $$=$1; };
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simple_ident:
7692 7693
	ident
	{
7694 7695 7696
          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;
7697
	  sp_variable_t *spv;
7698
          sp_pcontext *spc = lex->spcont;
7699
	  if (spc && (spv = spc->find_variable(&$1)))
7700 7701
	  {
            /* We're compiling a stored procedure and found a variable */
7702 7703 7704
            if (! lex->parsing_options.allows_variable)
            {
              my_error(ER_VIEW_SELECT_VARIABLE, MYF(0));
7705
              MYSQL_YYABORT;
7706 7707
            }

7708
            Item_splocal *splocal;
7709
            splocal= new Item_splocal($1, spv->offset, spv->type,
7710
                                      lip->tok_start_prev - 
7711
                                      lex->sphead->m_tmp_query);
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#ifndef DBUG_OFF
7713
            if (splocal)
7714
              splocal->m_sp= lex->sphead;
7715
#endif
7716
	    $$ = (Item*) splocal;
7717 7718 7719 7720 7721 7722 7723
	    lex->safe_to_cache_query=0;
	  }
	  else
	  {
	    SELECT_LEX *sel=Select;
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
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                 (Item*) new Item_field(Lex->current_context(), NullS, NullS, $1.str) :
	         (Item*) new Item_ref(Lex->current_context(), NullS, NullS, $1.str);
7726 7727 7728 7729 7730 7731
	  }
        }
        | simple_ident_q { $$= $1; }
	;

simple_ident_nospvar:
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	ident
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	{
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	  SELECT_LEX *sel=Select;
7735
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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              (Item*) new Item_field(Lex->current_context(), NullS, NullS, $1.str) :
	      (Item*) new Item_ref(Lex->current_context(), NullS, NullS, $1.str);
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	}
7740
	| simple_ident_q { $$= $1; }
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	;
7742 7743 7744

simple_ident_q:
	ident '.' ident
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	{
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	  THD *thd= YYTHD;
7747
	  LEX *lex= thd->lex;
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7749 7750 7751 7752 7753 7754
          /*
            FIXME This will work ok in simple_ident_nospvar case because
            we can't meet simple_ident_nospvar in trigger now. But it
            should be changed in future.
          */
          if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
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              (!my_strcasecmp(system_charset_info, $1.str, "NEW") ||
7756 7757
               !my_strcasecmp(system_charset_info, $1.str, "OLD")))
          {
7758
            Item_trigger_field *trg_fld;
7759
            bool new_row= ($1.str[0]=='N' || $1.str[0]=='n');
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7761 7762 7763
            if (lex->trg_chistics.event == TRG_EVENT_INSERT &&
                !new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "OLD", "on INSERT");
7765
              MYSQL_YYABORT;
7766
            }
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7768 7769 7770
            if (lex->trg_chistics.event == TRG_EVENT_DELETE &&
                new_row)
            {
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              my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0), "NEW", "on DELETE");
7772
              MYSQL_YYABORT;
7773
            }
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7775 7776 7777 7778 7779
            DBUG_ASSERT(!new_row ||
                        (lex->trg_chistics.event == TRG_EVENT_INSERT ||
                         lex->trg_chistics.event == TRG_EVENT_UPDATE));
            const bool read_only=
              !(new_row && lex->trg_chistics.action_time == TRG_ACTION_BEFORE);
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            if (!(trg_fld= new Item_trigger_field(Lex->current_context(),
7781
                                                  new_row ?
7782 7783
                                                  Item_trigger_field::NEW_ROW:
                                                  Item_trigger_field::OLD_ROW,
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                                                  $3.str,
7785 7786
                                                  SELECT_ACL,
                                                  read_only)))
7787
              MYSQL_YYABORT;
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7789 7790 7791 7792 7793 7794
            /*
              Let us add this item to list of all Item_trigger_field objects
              in trigger.
            */
            lex->trg_table_fields.link_in_list((byte *)trg_fld,
              (byte**)&trg_fld->next_trg_field);
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7796 7797 7798 7799 7800 7801 7802
            $$= (Item *)trg_fld;
          }
          else
          {
	    SELECT_LEX *sel= lex->current_select;
	    if (sel->no_table_names_allowed)
	    {
7803 7804
	      my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                       MYF(0), $1.str, thd->where);
7805 7806 7807
	    }
	    $$= (sel->parsing_place != IN_HAVING ||
	         sel->get_in_sum_expr() > 0) ?
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	        (Item*) new Item_field(Lex->current_context(), NullS, $1.str, $3.str) :
	        (Item*) new Item_ref(Lex->current_context(), NullS, $1.str, $3.str);
7810 7811
          }
        }
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	| '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
7819 7820
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $2.str, thd->where);
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	  }
7822
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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	      (Item*) new Item_field(Lex->current_context(), NullS, $2.str, $4.str) :
              (Item*) new Item_ref(Lex->current_context(), NullS, $2.str, $4.str);
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	}
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	| ident '.' ident '.' ident
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= thd->lex;
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	  SELECT_LEX *sel= lex->current_select;
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	  if (sel->no_table_names_allowed)
	  {
7834 7835
	    my_error(ER_TABLENAME_NOT_ALLOWED_HERE,
                     MYF(0), $3.str, thd->where);
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	  }
7837
	  $$= (sel->parsing_place != IN_HAVING ||
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	       sel->get_in_sum_expr() > 0) ?
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	      (Item*) new Item_field(Lex->current_context(),
7840
                                     (YYTHD->client_capabilities &
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				      CLIENT_NO_SCHEMA ? NullS : $1.str),
				     $3.str, $5.str) :
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	      (Item*) new Item_ref(Lex->current_context(),
7844
                                   (YYTHD->client_capabilities &
7845
				    CLIENT_NO_SCHEMA ? NullS : $1.str),
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                                   $3.str, $5.str);
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	};
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field_ident:
	ident			{ $$=$1;}
7852 7853 7854 7855 7856
	| ident '.' ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->db))
            {
7857
              my_error(ER_WRONG_DB_NAME, MYF(0), $1.str);
7858
              MYSQL_YYABORT;
7859
            }
7860 7861
            if (my_strcasecmp(table_alias_charset, $3.str,
                              table->table_name))
7862
            {
7863
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $3.str);
7864
              MYSQL_YYABORT;
7865 7866 7867 7868 7869 7870 7871 7872
            }
            $$=$5;
          }
	| ident '.' ident
          {
            TABLE_LIST *table= (TABLE_LIST*) Select->table_list.first;
            if (my_strcasecmp(table_alias_charset, $1.str, table->alias))
            {
7873
              my_error(ER_WRONG_TABLE_NAME, MYF(0), $1.str);
7874
              MYSQL_YYABORT;
7875 7876 7877
            }
            $$=$3;
          }
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	| '.' ident		{ $$=$2;}	/* For Delphi */;
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table_ident:
	ident			{ $$=new Table_ident($1); }
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	| ident '.' ident	{ $$=new Table_ident(YYTHD, $1,$3,0);}
7883 7884 7885
	| '.' ident		{ $$=new Table_ident($2);} /* For Delphi */
        ;

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table_ident_nodb:
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	ident			{ LEX_STRING db={(char*) any_db,3}; $$=new Table_ident(YYTHD, db,$1,0); }
7888
        ;
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IDENT_sys:
7891 7892 7893 7894 7895
	IDENT { $$= $1; }
	| IDENT_QUOTED
	  {
	    THD *thd= YYTHD;
	    if (thd->charset_is_system_charset)
7896 7897
            {
              CHARSET_INFO *cs= system_charset_info;
7898
              int dummy_error;
7899 7900
              uint wlen= cs->cset->well_formed_len(cs, $1.str,
                                                   $1.str+$1.length,
7901
                                                   $1.length, &dummy_error);
7902 7903
              if (wlen < $1.length)
              {
7904 7905
                my_error(ER_INVALID_CHARACTER_STRING, MYF(0),
                         cs->csname, $1.str + wlen);
7906
                MYSQL_YYABORT;
7907
              }
7908
	      $$= $1;
7909
            }
7910 7911 7912 7913
	    else
	      thd->convert_string(&$$, system_charset_info,
				  $1.str, $1.length, thd->charset());
	  }
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	;

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

7928
TEXT_STRING_literal:
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	TEXT_STRING
	{
	  THD *thd= YYTHD;
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	  if (thd->charset_is_collation_connection)
	    $$= $1;
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	  else
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	    thd->convert_string(&$$, thd->variables.collation_connection,
				$1.str, $1.length, thd->charset());
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	}
	;


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

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ident:
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	IDENT_sys	    { $$=$1; }
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	| keyword
	{
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	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
7960 7961
	}
	;
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7963 7964 7965 7966 7967 7968 7969 7970 7971 7972
label_ident:
	IDENT_sys	    { $$=$1; }
	| keyword_sp
	{
	  THD *thd= YYTHD;
	  $$.str=    thd->strmake($1.str, $1.length);
	  $$.length= $1.length;
	}
	;

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ident_or_text:
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        ident                   { $$=$1;}
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	| TEXT_STRING_sys	{ $$=$1;}
	| LEX_HOSTNAME		{ $$=$1;};
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user:
	ident_or_text
	{
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	  THD *thd= YYTHD;
	  if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
7983
	    MYSQL_YYABORT;
7984 7985 7986
	  $$->user = $1;
	  $$->host.str= (char *) "%";
	  $$->host.length= 1;
7987

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	  if (check_string_length(&$$->user,
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7989
                                  ER(ER_USERNAME), USERNAME_LENGTH))
7990
	    MYSQL_YYABORT;
7991
	}
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	| ident_or_text '@' ident_or_text
	  {
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	    THD *thd= YYTHD;
	    if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
7996
	      MYSQL_YYABORT;
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	    $$->user = $1; $$->host=$3;
7998

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	    if (check_string_length(&$$->user,
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                                    ER(ER_USERNAME), USERNAME_LENGTH) ||
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	        check_string_length(&$$->host,
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                                    ER(ER_HOSTNAME), HOSTNAME_LENGTH))
8003
	      MYSQL_YYABORT;
8004
	  }
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	| CURRENT_USER optional_braces
8006
	{
8007
          if (!($$=(LEX_USER*) YYTHD->alloc(sizeof(st_lex_user))))
8008
            MYSQL_YYABORT;
8009 8010 8011 8012 8013 8014
          /* 
            empty LEX_USER means current_user and 
            will be handled in the  get_current_user() function
            later
          */
          bzero($$, sizeof(LEX_USER));
8015
	};
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8016

8017
/* Keyword that we allow for identifiers (except SP labels) */
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keyword:
8019 8020 8021 8022 8023 8024 8025 8026 8027 8028 8029 8030 8031 8032 8033 8034 8035 8036 8037 8038 8039 8040 8041 8042 8043 8044 8045 8046 8047 8048 8049 8050 8051 8052 8053 8054
	keyword_sp		{}
	| ASCII_SYM		{}
	| BACKUP_SYM		{}
	| BEGIN_SYM		{}
	| BYTE_SYM		{}
	| CACHE_SYM		{}
	| CHARSET		{}
	| CHECKSUM_SYM		{}
	| CLOSE_SYM		{}
	| COMMENT_SYM		{}
	| COMMIT_SYM		{}
	| CONTAINS_SYM          {}
        | DEALLOCATE_SYM        {}
	| DO_SYM		{}
	| END			{}
	| EXECUTE_SYM		{}
	| FLUSH_SYM		{}
	| HANDLER_SYM		{}
	| HELP_SYM		{}
	| LANGUAGE_SYM          {}
	| NO_SYM		{}
	| OPEN_SYM		{}
        | PREPARE_SYM           {}
	| REPAIR		{}
	| RESET_SYM		{}
	| RESTORE_SYM		{}
	| ROLLBACK_SYM		{}
	| SAVEPOINT_SYM		{}
	| SECURITY_SYM		{}
	| SIGNED_SYM		{}
	| SLAVE			{}
	| START_SYM		{}
	| STOP_SYM		{}
	| TRUNCATE_SYM		{}
	| UNICODE_SYM		{}
        | XA_SYM                {}
8055
        | UPGRADE_SYM           {}
8056 8057 8058 8059
	;

/*
 * Keywords that we allow for labels in SPs.
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 * Anything that's the beginning of a statement or characteristics
 * must be in keyword above, otherwise we get (harmful) shift/reduce
 * conflicts.
8063 8064
 */
keyword_sp:
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	ACTION			{}
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	| ADDDATE_SYM		{}
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	| AFTER_SYM		{}
8068
	| AGAINST		{}
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	| AGGREGATE_SYM		{}
8070
	| ALGORITHM_SYM		{}
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	| ANY_SYM		{}
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	| AUTO_INC		{}
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	| AVG_ROW_LENGTH	{}
	| AVG_SYM		{}
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	| BERKELEY_DB_SYM	{}
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	| BINLOG_SYM		{}
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	| BIT_SYM		{}
	| BOOL_SYM		{}
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	| BOOLEAN_SYM		{}
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	| BTREE_SYM		{}
8081
	| CASCADED              {}
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	| CHAIN_SYM		{}
8083
	| CHANGED		{}
8084
	| CIPHER_SYM		{}
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	| CLIENT_SYM		{}
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        | CODE_SYM              {}
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	| COLLATION_SYM		{}
8088
        | COLUMNS               {}
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	| COMMITTED_SYM		{}
8090
	| COMPACT_SYM		{}
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	| COMPRESSED_SYM	{}
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	| CONCURRENT		{}
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	| CONNECTION_SYM	{}
8094
	| CONSISTENT_SYM	{}
8095
	| CUBE_SYM		{}
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	| DATA_SYM		{}
	| DATETIME		{}
	| DATE_SYM		{}
	| DAY_SYM		{}
8100
	| DEFINER_SYM		{}
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	| DELAY_KEY_WRITE_SYM	{}
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	| DES_KEY_FILE		{}
	| DIRECTORY_SYM		{}
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	| DISCARD		{}
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	| DUMPFILE		{}
	| DUPLICATE_SYM		{}
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	| DYNAMIC_SYM		{}
	| ENUM			{}
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	| ENGINE_SYM		{}
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	| ENGINES_SYM		{}
8111
	| ERRORS		{}
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	| ESCAPE_SYM		{}
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8113
	| EVENTS_SYM		{}
8114
        | EXPANSION_SYM         {}
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8115
	| EXTENDED_SYM		{}
8116
	| FAST_SYM		{}
8117
	| FOUND_SYM		{}
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	| DISABLE_SYM		{}
	| ENABLE_SYM		{}
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	| FULL			{}
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	| FILE_SYM		{}
	| FIRST_SYM		{}
	| FIXED_SYM		{}
8124
	| FRAC_SECOND_SYM	{}
8125
	| GEOMETRY_SYM		{}
8126
	| GEOMETRYCOLLECTION	{}
8127
	| GET_FORMAT		{}
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	| GRANTS		{}
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	| GLOBAL_SYM		{}
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	| HASH_SYM		{}
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	| HOSTS_SYM		{}
	| HOUR_SYM		{}
	| IDENTIFIED_SYM	{}
8134
	| INVOKER_SYM		{}
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	| IMPORT		{}
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	| INDEXES		{}
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	| ISOLATION		{}
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	| ISSUER_SYM		{}
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8139
	| INNOBASE_SYM		{}
8140
	| INSERT_METHOD		{}
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	| RELAY_THREAD		{}
8142
	| LAST_SYM		{}
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	| LEAVES                {}
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	| LEVEL_SYM		{}
8145
	| LINESTRING		{}
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	| LOCAL_SYM		{}
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	| LOCKS_SYM		{}
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	| LOGS_SYM		{}
	| MAX_ROWS		{}
	| MASTER_SYM		{}
	| MASTER_HOST_SYM	{}
	| MASTER_PORT_SYM	{}
	| MASTER_LOG_FILE_SYM	{}
	| MASTER_LOG_POS_SYM	{}
	| MASTER_USER_SYM	{}
	| MASTER_PASSWORD_SYM	{}
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	| MASTER_SERVER_ID_SYM  {}
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	| MASTER_CONNECT_RETRY_SYM	{}
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	| MASTER_SSL_SYM	{}
	| MASTER_SSL_CA_SYM	{}
	| MASTER_SSL_CAPATH_SYM	{}
	| MASTER_SSL_CERT_SYM	{}
	| MASTER_SSL_CIPHER_SYM	{}
	| MASTER_SSL_KEY_SYM	{}
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	| MAX_CONNECTIONS_PER_HOUR	 {}
	| MAX_QUERIES_PER_HOUR	{}
	| MAX_UPDATES_PER_HOUR	{}
8168
	| MAX_USER_CONNECTIONS_SYM {}
8169
	| MEDIUM_SYM		{}
8170
	| MERGE_SYM		{}
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8171
	| MICROSECOND_SYM	{}
8172
        | MIGRATE_SYM           {}
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	| MINUTE_SYM		{}
	| MIN_ROWS		{}
	| MODIFY_SYM		{}
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	| MODE_SYM		{}
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	| MONTH_SYM		{}
8178 8179 8180
	| MULTILINESTRING	{}
	| MULTIPOINT		{}
	| MULTIPOLYGON		{}
8181
        | MUTEX_SYM             {}
8182
	| NAME_SYM              {}
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	| NAMES_SYM		{}
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	| NATIONAL_SYM		{}
	| NCHAR_SYM		{}
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	| NDBCLUSTER_SYM	{}
8187
	| NEXT_SYM		{}
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8188
	| NEW_SYM		{}
8189
	| NONE_SYM		{}
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	| NVARCHAR_SYM		{}
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	| OFFSET_SYM		{}
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8192
	| OLD_PASSWORD		{}
8193
	| ONE_SHOT_SYM		{}
8194
        | ONE_SYM               {}
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8195
	| PACK_KEYS_SYM		{}
8196
	| PARTIAL		{}
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8197
	| PASSWORD		{}
8198
        | PHASE_SYM             {}
8199
	| POINT_SYM		{}
8200
	| POLYGON		{}
8201
	| PREV_SYM		{}
8202
        | PRIVILEGES            {}
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	| PROCESS		{}
	| PROCESSLIST_SYM	{}
8205
	| QUARTER_SYM		{}
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8206
	| QUERY_SYM		{}
8207
	| QUICK			{}
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8208
	| RAID_0_SYM		{}
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	| RAID_CHUNKS		{}
	| RAID_CHUNKSIZE	{}
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	| RAID_STRIPED_SYM	{}
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	| RAID_TYPE		{}
8213
        | RECOVER_SYM           {}
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        | REDUNDANT_SYM         {}
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	| RELAY_LOG_FILE_SYM	{}
	| RELAY_LOG_POS_SYM	{}
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	| RELOAD		{}
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	| REPEATABLE_SYM	{}
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	| REPLICATION		{}
8220
	| RESOURCES		{}
8221
        | RESUME_SYM            {}
8222
	| RETURNS_SYM           {}
8223
	| ROLLUP_SYM		{}
8224
	| ROUTINE_SYM		{}
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	| ROWS_SYM		{}
	| ROW_FORMAT_SYM	{}
	| ROW_SYM		{}
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8228
	| RTREE_SYM		{}
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8229
	| SECOND_SYM		{}
8230
	| SERIAL_SYM		{}
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	| SERIALIZABLE_SYM	{}
	| SESSION_SYM		{}
8233
	| SIMPLE_SYM		{}
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8234
	| SHARE_SYM		{}
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8235
	| SHUTDOWN		{}
8236
	| SNAPSHOT_SYM		{}
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8237
	| SOUNDS_SYM		{}
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8238
	| SQL_CACHE_SYM		{}
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8239
	| SQL_BUFFER_RESULT	{}
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8240
	| SQL_NO_CACHE_SYM	{}
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8241
	| SQL_THREAD		{}
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8242
	| STATUS_SYM		{}
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8243
	| STORAGE_SYM		{}
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8244
	| STRING_SYM		{}
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8245
	| SUBDATE_SYM		{}
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8246
	| SUBJECT_SYM		{}
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8247
	| SUPER_SYM		{}
8248
        | SUSPEND_SYM           {}
8249
        | TABLES                {}
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8250
	| TABLESPACE		{}
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8251
	| TEMPORARY		{}
8252
	| TEMPTABLE_SYM		{}
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8253
	| TEXT_SYM		{}
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8254
	| TRANSACTION_SYM	{}
8255
	| TRIGGERS_SYM		{}
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	| TIMESTAMP		{}
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	| TIMESTAMP_ADD		{}
	| TIMESTAMP_DIFF	{}
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	| TIME_SYM		{}
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	| TYPES_SYM		{}
8261
        | TYPE_SYM              {}
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        | UDF_RETURNS_SYM       {}
8263
	| FUNCTION_SYM		{}
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	| UNCOMMITTED_SYM	{}
8265
	| UNDEFINED_SYM		{}
8266
	| UNKNOWN_SYM		{}
8267
	| UNTIL_SYM		{}
8268
	| USER			{}
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	| USE_FRM		{}
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	| VARIABLES		{}
8271
	| VIEW_SYM		{}
8272
	| VALUE_SYM		{}
8273
	| WARNINGS		{}
8274
	| WEEK_SYM		{}
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	| WORK_SYM		{}
8276
	| X509_SYM		{}
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	| YEAR_SYM		{}
	;
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/* Option functions */

set:
	SET opt_option
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SET_OPTION;
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	  mysql_init_select(lex);
8288
	  lex->option_type=OPT_SESSION;
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	  lex->var_list.empty();
8290
          lex->one_shot_set= 0;
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	}
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	option_value_list
	{}
	;
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opt_option:
	/* empty */ {}
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	| OPTION {};
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option_value_list:
8301 8302 8303 8304 8305
	option_type_value
	| option_value_list ',' option_type_value;

option_type_value:
        {
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          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;

          if (lex->sphead)
8311 8312 8313 8314
          {
            /*
              If we are in SP we want have own LEX for each assignment.
              This is mostly because it is hard for several sp_instr_set
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              and sp_instr_set_trigger instructions share one LEX.
              (Well, it is theoretically possible but adds some extra
8317 8318 8319 8320 8321
               overhead on preparation for execution stage and IMO less
               robust).

              QQ: May be we should simply prohibit group assignments in SP?
            */
8322 8323
            Lex->sphead->reset_lex(thd);
            lex= thd->lex;
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            /* Set new LEX as if we at start of set rule. */
	    lex->sql_command= SQLCOM_SET_OPTION;
	    mysql_init_select(lex);
	    lex->option_type=OPT_SESSION;
	    lex->var_list.empty();
            lex->one_shot_set= 0;
8331
	    lex->sphead->m_tmp_query= lip->tok_start;
8332 8333
          }
        }
8334
	ext_option_value
8335
        {
8336 8337 8338
          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;
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8340 8341 8342
          if (lex->sphead)
          {
            sp_head *sp= lex->sphead;
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	    if (!lex->var_list.is_empty())
	    {
              /*
                We have assignment to user or system variable or
                option setting, so we should construct sp_instr_stmt
                for it.
              */
              LEX_STRING qbuff;
	      sp_instr_stmt *i;
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              if (!(i= new sp_instr_stmt(sp->instructions(), lex->spcont,
                                         lex)))
8356
                MYSQL_YYABORT;
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8357

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              /*
                Extract the query statement from the tokenizer.  The
8360 8361
                end is either lip->ptr, if there was no lookahead,
                lip->tok_end otherwise.
8362 8363
              */
              if (yychar == YYEMPTY)
8364
                qbuff.length= lip->ptr - sp->m_tmp_query;
8365
              else
8366
                qbuff.length= lip->tok_end - sp->m_tmp_query;
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8368
              if (!(qbuff.str= alloc_root(thd->mem_root, qbuff.length + 5)))
8369
                MYSQL_YYABORT;
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8370

8371
              strmake(strmake(qbuff.str, "SET ", 4), sp->m_tmp_query,
8372 8373 8374 8375 8376
                      qbuff.length);
              qbuff.length+= 4;
              i->m_query= qbuff;
              sp->add_instr(i);
            }
8377
            lex->sphead->restore_lex(thd);
8378 8379
          }
        };
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option_type:
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        option_type2    {}
	| GLOBAL_SYM	{ $$=OPT_GLOBAL; }
	| LOCAL_SYM	{ $$=OPT_SESSION; }
	| SESSION_SYM	{ $$=OPT_SESSION; }
	;

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

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

opt_var_ident_type:
	/* empty */		{ $$=OPT_DEFAULT; }
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	| GLOBAL_SYM '.'	{ $$=OPT_GLOBAL; }
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	| LOCAL_SYM '.'		{ $$=OPT_SESSION; }
	| SESSION_SYM '.'	{ $$=OPT_SESSION; }
	;
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8407 8408 8409
ext_option_value:
        sys_option_value
        | option_type2 option_value;
8410

8411 8412 8413 8414
sys_option_value:
        option_type internal_variable_name equal set_expr_or_default
        {
          LEX *lex=Lex;
8415

8416 8417 8418 8419
          if ($2.var == &trg_new_row_fake_var)
          {
            /* We are in trigger and assigning value to field of new row */
            Item *it;
8420
            Item_trigger_field *trg_fld;
8421 8422
            sp_instr_set_trigger_field *sp_fld;
	    LINT_INIT(sp_fld);
8423 8424
            if ($1)
            {
8425 8426
              my_parse_error(ER(ER_SYNTAX_ERROR));
              MYSQL_YYABORT;
8427
            }
8428 8429
            if ($4)
              it= $4;
8430
            else
8431 8432 8433 8434
            {
              /* QQ: Shouldn't this be field's default value ? */
              it= new Item_null();
            }
8435

8436 8437 8438
            DBUG_ASSERT(lex->trg_chistics.action_time == TRG_ACTION_BEFORE &&
                        (lex->trg_chistics.event == TRG_EVENT_INSERT ||
                         lex->trg_chistics.event == TRG_EVENT_UPDATE));
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            if (!(trg_fld= new Item_trigger_field(Lex->current_context(),
8440
                                                  Item_trigger_field::NEW_ROW,
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                                                  $2.base_name.str,
8442
                                                  UPDATE_ACL, FALSE)) ||
8443 8444 8445 8446 8447
                !(sp_fld= new sp_instr_set_trigger_field(lex->sphead->
                          	                         instructions(),
                                	                 lex->spcont,
							 trg_fld,
                                        	         it, lex)))
8448
              MYSQL_YYABORT;
8449

8450 8451 8452 8453
            /*
              Let us add this item to list of all Item_trigger_field
              objects in trigger.
            */
8454 8455
            lex->trg_table_fields.link_in_list((byte *)trg_fld,
                                    (byte **)&trg_fld->next_trg_field);
8456

8457
            lex->sphead->add_instr(sp_fld);
8458 8459 8460 8461
          }
          else if ($2.var)
          { /* System variable */
            if ($1)
8462
              lex->option_type= $1;
8463 8464 8465 8466 8467 8468 8469
            lex->var_list.push_back(new set_var(lex->option_type, $2.var,
                                    &$2.base_name, $4));
          }
          else
          {
            /* An SP local variable */
            sp_pcontext *ctx= lex->spcont;
8470
            sp_variable_t *spv;
8471
            sp_instr_set *sp_set;
8472 8473 8474
            Item *it;
            if ($1)
            {
8475 8476
              my_parse_error(ER(ER_SYNTAX_ERROR));
              MYSQL_YYABORT;
8477 8478
            }

8479
            spv= ctx->find_variable(&$2.base_name);
8480 8481 8482 8483 8484 8485 8486

            if ($4)
              it= $4;
            else if (spv->dflt)
              it= spv->dflt;
            else
              it= new Item_null();
8487 8488 8489
            sp_set= new sp_instr_set(lex->sphead->instructions(), ctx,
                                     spv->offset, it, spv->type, lex, TRUE);
            lex->sphead->add_instr(sp_set);
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          }
        }
        | option_type TRANSACTION_SYM ISOLATION LEVEL_SYM isolation_types
	{
	  LEX *lex=Lex;
8495
          if ($1)
8496
            lex->option_type= $1;
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	  lex->var_list.push_back(new set_var(lex->option_type,
                                              find_sys_var("tx_isolation"),
                                              &null_lex_str,
                                              new Item_int((int32) $5)));
	}
        ;

option_value:
	'@' ident_or_text equal expr
	{
          Lex->var_list.push_back(new set_var_user(new Item_func_set_user_var($2,$4)));
	}
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	| '@' '@' opt_var_ident_type internal_variable_name equal set_expr_or_default
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	  {
	    LEX *lex=Lex;
8512
	    lex->var_list.push_back(new set_var($3, $4.var, &$4.base_name, $6));
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	  }
8514
	| charset old_or_new_charset_name_or_default
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	{
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	  THD *thd= YYTHD;
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	  LEX *lex= Lex;
8518
	  $2= $2 ? $2: global_system_variables.character_set_client;
8519
	  lex->var_list.push_back(new set_var_collation_client($2,thd->variables.collation_database,$2));
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	}
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        | NAMES_SYM equal expr
	  {
	    LEX *lex= Lex;
            sp_pcontext *spc= lex->spcont;
	    LEX_STRING names;

	    names.str= (char *)"names";
	    names.length= 5;
8529
	    if (spc && spc->find_variable(&names))
8530
              my_error(ER_SP_BAD_VAR_SHADOW, MYF(0), names.str);
8531
            else
8532
              my_parse_error(ER(ER_SYNTAX_ERROR));
8533

8534
	    MYSQL_YYABORT;
8535
	  }
8536
	| NAMES_SYM charset_name_or_default opt_collate
8537
	{
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	  LEX *lex= Lex;
8539
	  $2= $2 ? $2 : global_system_variables.character_set_client;
8540 8541
	  $3= $3 ? $3 : $2;
	  if (!my_charset_same($2,$3))
8542
	  {
8543 8544
	    my_error(ER_COLLATION_CHARSET_MISMATCH, MYF(0),
                     $3->name, $2->csname);
8545
	    MYSQL_YYABORT;
8546
	  }
8547
	  lex->var_list.push_back(new set_var_collation_client($3,$3,$3));
8548
	}
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	| PASSWORD equal text_or_password
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8550
	  {
8551
	    THD *thd=YYTHD;
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	    LEX_USER *user;
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	    LEX *lex= Lex;	    
            sp_pcontext *spc= lex->spcont;
	    LEX_STRING pw;

	    pw.str= (char *)"password";
	    pw.length= 8;
8559
	    if (spc && spc->find_variable(&pw))
8560 8561
	    {
              my_error(ER_SP_BAD_VAR_SHADOW, MYF(0), pw.str);
8562
	      MYSQL_YYABORT;
8563
	    }
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	    if (!(user=(LEX_USER*) thd->alloc(sizeof(LEX_USER))))
8565
	      MYSQL_YYABORT;
8566
	    user->host=null_lex_str;
8567
	    user->user.str=thd->security_ctx->priv_user;
8568
	    thd->lex->var_list.push_back(new set_var_password(user, $3));
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	  }
	| PASSWORD FOR_SYM user equal text_or_password
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8571
	  {
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	    Lex->var_list.push_back(new set_var_password($3,$5));
	  }
8574
	;
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8575

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internal_variable_name:
	ident
	{
8579 8580
	  LEX *lex= Lex;
          sp_pcontext *spc= lex->spcont;
8581
	  sp_variable_t *spv;
8582 8583

	  /* We have to lookup here since local vars can shadow sysvars */
8584
	  if (!spc || !(spv = spc->find_variable(&$1)))
8585 8586 8587 8588
	  {
            /* Not an SP local variable */
	    sys_var *tmp=find_sys_var($1.str, $1.length);
	    if (!tmp)
8589
	      MYSQL_YYABORT;
8590
	    $$.var= tmp;
8591
	    $$.base_name= null_lex_str;
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            /*
              If this is time_zone variable we should open time zone
              describing tables 
            */
8596 8597
            if (tmp == &sys_time_zone &&
                lex->add_time_zone_tables_to_query_tables(YYTHD))
8598
              MYSQL_YYABORT;
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            else if (spc && tmp == &sys_autocommit)
            {
              /*
                We don't allow setting AUTOCOMMIT from a stored function
		or trigger.
              */
              lex->sphead->m_flags|= sp_head::HAS_SET_AUTOCOMMIT_STMT;
            }
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	  }
	  else
	  {
            /* An SP local variable */
	    $$.var= NULL;
	    $$.base_name= $1;
	  }
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	}
8615 8616
	| ident '.' ident
	  {
8617
            LEX *lex= Lex;
8618 8619
            if (check_reserved_words(&$1))
            {
8620 8621
              my_parse_error(ER(ER_SYNTAX_ERROR));
              MYSQL_YYABORT;
8622
            }
8623 8624 8625 8626 8627 8628
            if (lex->sphead && lex->sphead->m_type == TYPE_ENUM_TRIGGER &&
                (!my_strcasecmp(system_charset_info, $1.str, "NEW") || 
                 !my_strcasecmp(system_charset_info, $1.str, "OLD")))
            {
              if ($1.str[0]=='O' || $1.str[0]=='o')
              {
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                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "OLD", "");
8630
                MYSQL_YYABORT;
8631 8632 8633
              }
              if (lex->trg_chistics.event == TRG_EVENT_DELETE)
              {
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                my_error(ER_TRG_NO_SUCH_ROW_IN_TRG, MYF(0),
                         "NEW", "on DELETE");
8636
                MYSQL_YYABORT;
8637 8638 8639
              }
              if (lex->trg_chistics.action_time == TRG_ACTION_AFTER)
              {
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8640
                my_error(ER_TRG_CANT_CHANGE_ROW, MYF(0), "NEW", "after ");
8641
                MYSQL_YYABORT;
8642 8643 8644 8645 8646 8647 8648 8649 8650
              }
              /* 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)
8651
                MYSQL_YYABORT;
8652
              if (!tmp->is_struct())
8653
                my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
8654 8655 8656
              $$.var= tmp;
              $$.base_name= $1;
            }
8657 8658 8659 8660 8661
	  }
	| DEFAULT '.' ident
	  {
	    sys_var *tmp=find_sys_var($3.str, $3.length);
	    if (!tmp)
8662
	      MYSQL_YYABORT;
8663
	    if (!tmp->is_struct())
8664
	      my_error(ER_VARIABLE_IS_NOT_STRUCT, MYF(0), $3.str);
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	    $$.var= tmp;
	    $$.base_name.str=    (char*) "default";
	    $$.base_name.length= 7;
8668
	  }
8669
        ;
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isolation_types:
	READ_SYM UNCOMMITTED_SYM	{ $$= ISO_READ_UNCOMMITTED; }
	| READ_SYM COMMITTED_SYM	{ $$= ISO_READ_COMMITTED; }
	| REPEATABLE_SYM READ_SYM	{ $$= ISO_REPEATABLE_READ; }
	| SERIALIZABLE_SYM		{ $$= ISO_SERIALIZABLE; }
	;
8677

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text_or_password:
	TEXT_STRING { $$=$1.str;}
	| PASSWORD '(' TEXT_STRING ')'
	  {
8682
	    $$= $3.length ? YYTHD->variables.old_passwords ?
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	        Item_func_old_password::alloc(YYTHD, $3.str) :
	        Item_func_password::alloc(YYTHD, $3.str) :
	      $3.str;
	  }
	| OLD_PASSWORD '(' TEXT_STRING ')'
	  {
	    $$= $3.length ? Item_func_old_password::alloc(YYTHD, $3.str) :
	      $3.str;
8691 8692
	  }
          ;
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8693

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8694

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set_expr_or_default:
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	expr      { $$=$1; }
	| DEFAULT { $$=0; }
8698 8699
	| ON	  { $$=new Item_string("ON",  2, system_charset_info); }
	| ALL	  { $$=new Item_string("ALL", 3, system_charset_info); }
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	| BINARY  { $$=new Item_string("binary", 6, system_charset_info); }
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	;
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/* Lock function */

lock:
	LOCK_SYM table_or_tables
	{
8709 8710 8711 8712
	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
8713
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "LOCK");
8714
	    MYSQL_YYABORT;
8715 8716
	  }
	  lex->sql_command= SQLCOM_LOCK_TABLES;
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8717
	}
8718 8719
	table_lock_list
	{}
8720
	;
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table_or_tables:
	TABLE_SYM
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	| TABLES;
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table_lock_list:
	table_lock
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	| table_lock_list ',' table_lock;
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table_lock:
	table_ident opt_table_alias lock_option
8732
	{
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8733
	  if (!Select->add_table_to_list(YYTHD, $1, $2, 0, (thr_lock_type) $3))
8734
	   MYSQL_YYABORT;
8735
	}
8736
        ;
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lock_option:
	READ_SYM	{ $$=TL_READ_NO_INSERT; }
8740
	| WRITE_SYM     { $$=TL_WRITE_DEFAULT; }
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	| LOW_PRIORITY WRITE_SYM { $$=TL_WRITE_LOW_PRIORITY; }
8742 8743
	| READ_SYM LOCAL_SYM { $$= TL_READ; }
        ;
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8744 8745

unlock:
8746 8747 8748 8749 8750 8751
	UNLOCK_SYM
	{
	  LEX *lex= Lex;

	  if (lex->sphead)
	  {
8752
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "UNLOCK");
8753
	    MYSQL_YYABORT;
8754 8755 8756 8757 8758
	  }
	  lex->sql_command= SQLCOM_UNLOCK_TABLES;
	}
	table_or_tables
	{}
8759
        ;
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8762
/*
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8763
** Handler: direct access to ISAM functions
8764 8765 8766 8767 8768
*/

handler:
	HANDLER_SYM table_ident OPEN_SYM opt_table_alias
	{
8769
	  LEX *lex= Lex;
8770 8771 8772
	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
8773
	    MYSQL_YYABORT;
8774
	  }
8775
	  lex->sql_command = SQLCOM_HA_OPEN;
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8776
	  if (!lex->current_select->add_table_to_list(lex->thd, $2, $4, 0))
8777
	    MYSQL_YYABORT;
8778
	}
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8779
	| HANDLER_SYM table_ident_nodb CLOSE_SYM
8780
	{
8781
	  LEX *lex= Lex;
8782 8783 8784
	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
8785
	    MYSQL_YYABORT;
8786
	  }
8787
	  lex->sql_command = SQLCOM_HA_CLOSE;
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8788
	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
8789
	    MYSQL_YYABORT;
8790
	}
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	| HANDLER_SYM table_ident_nodb READ_SYM
8792
	{
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	  LEX *lex=Lex;
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	  if (lex->sphead)
	  {
	    my_error(ER_SP_BADSTATEMENT, MYF(0), "HANDLER");
8797
	    MYSQL_YYABORT;
8798
	  }
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	  lex->sql_command = SQLCOM_HA_READ;
	  lex->ha_rkey_mode= HA_READ_KEY_EXACT;	/* Avoid purify warnings */
8801
	  lex->current_select->select_limit= new Item_int((int32) 1);
8802
	  lex->current_select->offset_limit= 0;
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	  if (!lex->current_select->add_table_to_list(lex->thd, $2, 0, 0))
8804
	    MYSQL_YYABORT;
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        }
8806
        handler_read_or_scan where_clause opt_limit_clause {}
8807
        ;
8808

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handler_read_or_scan:
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	handler_scan_function         { Lex->ident= null_lex_str; }
        | ident handler_rkey_function { Lex->ident= $1; }
8812
        ;
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handler_scan_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
8816 8817
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
        ;
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handler_rkey_function:
	FIRST_SYM  { Lex->ha_read_mode = RFIRST; }
	| NEXT_SYM { Lex->ha_read_mode = RNEXT;  }
	| PREV_SYM { Lex->ha_read_mode = RPREV;  }
	| LAST_SYM { Lex->ha_read_mode = RLAST;  }
8824 8825
	| handler_rkey_mode
	{
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	  LEX *lex=Lex;
	  lex->ha_read_mode = RKEY;
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	  lex->ha_rkey_mode=$1;
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	  if (!(lex->insert_list = new List_item))
8830
	    MYSQL_YYABORT;
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	} '(' values ')' { }
        ;
8833 8834

handler_rkey_mode:
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	  EQ     { $$=HA_READ_KEY_EXACT;   }
	| GE     { $$=HA_READ_KEY_OR_NEXT; }
	| LE     { $$=HA_READ_KEY_OR_PREV; }
	| GT_SYM { $$=HA_READ_AFTER_KEY;   }
8839 8840
	| LT     { $$=HA_READ_BEFORE_KEY;  }
        ;
8841

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/* GRANT / REVOKE */

revoke:
8845
	REVOKE clear_privileges revoke_command
8846 8847 8848 8849
	{}
        ;

revoke_command:
8850
	grant_privileges ON opt_table grant_ident FROM grant_list
8851
	{
8852 8853 8854 8855 8856 8857 8858 8859 8860 8861
          LEX *lex= Lex;
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= 0;
        }
        |
        grant_privileges ON FUNCTION_SYM grant_ident FROM grant_list
        {
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
8862 8863
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
8864 8865 8866 8867 8868 8869 8870 8871 8872 8873 8874
          }
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= TYPE_ENUM_FUNCTION;
          
        }
	|
        grant_privileges ON PROCEDURE grant_ident FROM grant_list
        {
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
8875 8876
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
8877 8878 8879
          }
	  lex->sql_command= SQLCOM_REVOKE;
          lex->type= TYPE_ENUM_PROCEDURE;
8880
        }
8881
	|
8882
	ALL opt_privileges ',' GRANT OPTION FROM grant_list
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	{
	  Lex->sql_command = SQLCOM_REVOKE_ALL;
	}
8886
	;
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grant:
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	GRANT clear_privileges grant_command
	{}
        ;

grant_command:
	grant_privileges ON opt_table grant_ident TO_SYM grant_list
8895
	require_clause grant_options
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	{
          LEX *lex= Lex;
          lex->sql_command= SQLCOM_GRANT;
          lex->type= 0;
        }
        |
	grant_privileges ON FUNCTION_SYM grant_ident TO_SYM grant_list
	require_clause grant_options
	{
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
8908 8909
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
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          }
          lex->sql_command= SQLCOM_GRANT;
          lex->type= TYPE_ENUM_FUNCTION;
        }
        |
	grant_privileges ON PROCEDURE grant_ident TO_SYM grant_list
	require_clause grant_options
	{
          LEX *lex= Lex;
          if (lex->columns.elements)
          {
8921 8922
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
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          }
          lex->sql_command= SQLCOM_GRANT;
          lex->type= TYPE_ENUM_PROCEDURE;
        }
        ;
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opt_table:
	/* Empty */
	| TABLE_SYM ;
        
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grant_privileges:
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	object_privilege_list { }
	| ALL opt_privileges
        { 
          Lex->all_privileges= 1; 
          Lex->grant= GLOBAL_ACLS;
        }
8940
        ;
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opt_privileges:
	/* empty */
	| PRIVILEGES
	;

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object_privilege_list:
	object_privilege
	| object_privilege_list ',' object_privilege;
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8951
object_privilege:
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	SELECT_SYM	{ Lex->which_columns = SELECT_ACL;} opt_column_list {}
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	| INSERT	{ Lex->which_columns = INSERT_ACL;} opt_column_list {}
	| UPDATE_SYM	{ Lex->which_columns = UPDATE_ACL; } opt_column_list {}
	| REFERENCES	{ Lex->which_columns = REFERENCES_ACL;} opt_column_list {}
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	| DELETE_SYM	{ Lex->grant |= DELETE_ACL;}
	| USAGE		{}
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	| INDEX_SYM	{ Lex->grant |= INDEX_ACL;}
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	| ALTER		{ Lex->grant |= ALTER_ACL;}
	| CREATE	{ Lex->grant |= CREATE_ACL;}
	| DROP		{ Lex->grant |= DROP_ACL;}
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	| EXECUTE_SYM	{ Lex->grant |= EXECUTE_ACL;}
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	| RELOAD	{ Lex->grant |= RELOAD_ACL;}
	| SHUTDOWN	{ Lex->grant |= SHUTDOWN_ACL;}
	| PROCESS	{ Lex->grant |= PROCESS_ACL;}
	| FILE_SYM	{ Lex->grant |= FILE_ACL;}
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	| GRANT OPTION  { Lex->grant |= GRANT_ACL;}
	| SHOW DATABASES { Lex->grant |= SHOW_DB_ACL;}
	| SUPER_SYM	{ Lex->grant |= SUPER_ACL;}
	| CREATE TEMPORARY TABLES { Lex->grant |= CREATE_TMP_ACL;}
	| LOCK_SYM TABLES   { Lex->grant |= LOCK_TABLES_ACL; }
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	| REPLICATION SLAVE  { Lex->grant |= REPL_SLAVE_ACL; }
	| REPLICATION CLIENT_SYM { Lex->grant |= REPL_CLIENT_ACL; }
	| CREATE VIEW_SYM { Lex->grant |= CREATE_VIEW_ACL; }
	| SHOW VIEW_SYM { Lex->grant |= SHOW_VIEW_ACL; }
8976 8977
	| CREATE ROUTINE_SYM { Lex->grant |= CREATE_PROC_ACL; }
	| ALTER ROUTINE_SYM { Lex->grant |= ALTER_PROC_ACL; }
8978
	| CREATE USER { Lex->grant |= CREATE_USER_ACL; }
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	;
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opt_and:
	/* empty */	{}
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	| AND_SYM	{}
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	;

require_list:
	 require_list_element opt_and require_list
	 | require_list_element
	 ;

require_list_element:
	SUBJECT_SYM TEXT_STRING
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	{
	  LEX *lex=Lex;
	  if (lex->x509_subject)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "SUBJECT");
8999
	    MYSQL_YYABORT;
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	  }
	  lex->x509_subject=$2.str;
	}
	| ISSUER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->x509_issuer)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "ISSUER");
9009
	    MYSQL_YYABORT;
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	  }
	  lex->x509_issuer=$2.str;
	}
	| CIPHER_SYM TEXT_STRING
	{
	  LEX *lex=Lex;
	  if (lex->ssl_cipher)
	  {
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	    my_error(ER_DUP_ARGUMENT, MYF(0), "CIPHER");
9019
	    MYSQL_YYABORT;
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	  }
	  lex->ssl_cipher=$2.str;
	}
	;
9024

9025
grant_ident:
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	'*'
	  {
9028
	    LEX *lex= Lex;
9029
            if (lex->copy_db_to(&lex->current_select->db, NULL))
9030
              MYSQL_YYABORT;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
9037
	      MYSQL_YYABORT;
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	    }
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	  }
	| ident '.' '*'
	  {
9042
	    LEX *lex= Lex;
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	    lex->current_select->db = $1.str;
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	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant = DB_ACLS & ~GRANT_ACL;
	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
9050
	      MYSQL_YYABORT;
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	    }
	  }
	| '*' '.' '*'
	  {
9055
	    LEX *lex= Lex;
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9056
	    lex->current_select->db = NULL;
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	    if (lex->grant == GLOBAL_ACLS)
	      lex->grant= GLOBAL_ACLS & ~GRANT_ACL;
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	    else if (lex->columns.elements)
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	    {
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	      my_message(ER_ILLEGAL_GRANT_FOR_TABLE,
                         ER(ER_ILLEGAL_GRANT_FOR_TABLE), MYF(0));
9063
	      MYSQL_YYABORT;
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	    }
	  }
	| table_ident
	  {
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9068
	    LEX *lex=Lex;
9069 9070
	    if (!lex->current_select->add_table_to_list(lex->thd, $1,NULL,
                                                        TL_OPTION_UPDATING))
9071
	      MYSQL_YYABORT;
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9072
	    if (lex->grant == GLOBAL_ACLS)
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	      lex->grant =  TABLE_ACLS & ~GRANT_ACL;
9074 9075
	  }
          ;
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user_list:
9079
	user  { if (Lex->users_list.push_back($1)) MYSQL_YYABORT;}
9080 9081 9082
	| user_list ',' user
	  {
	    if (Lex->users_list.push_back($3))
9083
	      MYSQL_YYABORT;
9084 9085 9086 9087 9088
	  }
	;


grant_list:
9089
	grant_user  { if (Lex->users_list.push_back($1)) MYSQL_YYABORT;}
9090
	| grant_list ',' grant_user
9091 9092
	  {
	    if (Lex->users_list.push_back($3))
9093
	      MYSQL_YYABORT;
9094 9095
	  }
	;
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grant_user:
	user IDENTIFIED_SYM BY TEXT_STRING
	{
	   $$=$1; $1->password=$4;
	   if ($4.length)
	   {
9104
             if (YYTHD->variables.old_passwords)
9105 9106 9107 9108 9109 9110 9111 9112 9113 9114 9115 9116 9117 9118 9119 9120 9121
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
               if (buff)
                 make_scrambled_password_323(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH_323;
             }
             else
             {
               char *buff= 
                 (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
               if (buff)
                 make_scrambled_password(buff, $4.str);
               $1->password.str= buff;
               $1->password.length= SCRAMBLED_PASSWORD_CHAR_LENGTH;
             }
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	  }
	}
	| user IDENTIFIED_SYM BY PASSWORD TEXT_STRING
9125
	  { $$= $1; $1->password= $5; }
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9126
	| user
9127
	  { $$= $1; $1->password= null_lex_str; }
9128
        ;
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opt_column_list:
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	/* empty */
	{
	  LEX *lex=Lex;
	  lex->grant |= lex->which_columns;
	}
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	| '(' column_list ')';
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column_list:
	column_list ',' column_list_id
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	| column_list_id;
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column_list_id:
	ident
	{
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	  String *new_str = new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info);
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	  List_iterator <LEX_COLUMN> iter(Lex->columns);
	  class LEX_COLUMN *point;
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	  LEX *lex=Lex;
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	  while ((point=iter++))
	  {
9152 9153
	    if (!my_strcasecmp(system_charset_info,
                               point->column.ptr(), new_str->ptr()))
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		break;
	  }
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	  lex->grant_tot_col|= lex->which_columns;
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	  if (point)
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	    point->rights |= lex->which_columns;
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	  else
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	    lex->columns.push_back(new LEX_COLUMN (*new_str,lex->which_columns));
9161 9162
	}
        ;
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require_clause: /* empty */
9166
        | REQUIRE_SYM require_list
9167 9168 9169
          {
            Lex->ssl_type=SSL_TYPE_SPECIFIED;
          }
9170
        | REQUIRE_SYM SSL_SYM
9171 9172 9173
          {
            Lex->ssl_type=SSL_TYPE_ANY;
          }
9174
        | REQUIRE_SYM X509_SYM
9175 9176 9177 9178 9179 9180 9181
          {
            Lex->ssl_type=SSL_TYPE_X509;
          }
	| REQUIRE_SYM NONE_SYM
	  {
	    Lex->ssl_type=SSL_TYPE_NONE;
	  }
9182
          ;
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9183

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grant_options:
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	/* empty */ {}
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	| WITH grant_option_list;
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9187

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grant_option_list:
	grant_option_list grant_option {}
9190 9191
	| grant_option {}
        ;
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grant_option:
	GRANT OPTION { Lex->grant |= GRANT_ACL;}
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        | MAX_QUERIES_PER_HOUR ulong_num
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9196
        {
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	  LEX *lex=Lex;
	  lex->mqh.questions=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::QUERIES_PER_HOUR;
9200
	}
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        | MAX_UPDATES_PER_HOUR ulong_num
9202
        {
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	  LEX *lex=Lex;
	  lex->mqh.updates=$2;
	  lex->mqh.specified_limits|= USER_RESOURCES::UPDATES_PER_HOUR;
9206
	}
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9207
        | MAX_CONNECTIONS_PER_HOUR ulong_num
9208
        {
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	  LEX *lex=Lex;
	  lex->mqh.conn_per_hour= $2;
	  lex->mqh.specified_limits|= USER_RESOURCES::CONNECTIONS_PER_HOUR;
9212
	}
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        | MAX_USER_CONNECTIONS_SYM ulong_num
9214
        {
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	  LEX *lex=Lex;
          lex->mqh.user_conn= $2;
          lex->mqh.specified_limits|= USER_RESOURCES::USER_CONNECTIONS;
9218 9219
	}
        ;
9220

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begin:
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	BEGIN_SYM  
        {
	  LEX *lex=Lex;
          lex->sql_command = SQLCOM_BEGIN;
          lex->start_transaction_opt= 0;
        }
        opt_work {}
9229
	;
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opt_work:
	/* empty */ {}
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	| WORK_SYM  {}
9234
        ;
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opt_chain:
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	/* empty */ { $$= (YYTHD->variables.completion_type == 1); }
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	| AND_SYM NO_SYM CHAIN_SYM	{ $$=0; }
	| AND_SYM CHAIN_SYM		{ $$=1; }
	;

opt_release:
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9243
	/* empty */ { $$= (YYTHD->variables.completion_type == 2); }
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	| RELEASE_SYM 			{ $$=1; }
	| NO_SYM RELEASE_SYM 		{ $$=0; }
	;
	
opt_savepoint:
	/* empty */	{}
	| SAVEPOINT_SYM {}
	;

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commit:
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	COMMIT_SYM opt_work opt_chain opt_release
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	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_COMMIT;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
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	}
	;
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rollback:
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	ROLLBACK_SYM opt_work opt_chain opt_release
9265
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK;
	  lex->tx_chain= $3; 
	  lex->tx_release= $4;
9270
	}
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	| ROLLBACK_SYM opt_work
	  TO_SYM opt_savepoint ident
9273
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_ROLLBACK_TO_SAVEPOINT;
	  lex->ident= $5;
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	}
	;

9280 9281 9282
savepoint:
	SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_SAVEPOINT;
	  lex->ident= $2;
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	}
	;

release:
	RELEASE_SYM SAVEPOINT_SYM ident
	{
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	  LEX *lex=Lex;
	  lex->sql_command= SQLCOM_RELEASE_SAVEPOINT;
	  lex->ident= $3;
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	}
	;
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9298
/*
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   UNIONS : glue selects together
9300 9301 9302
*/


9303
union_clause:
9304
	/* empty */ {}
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	| union_list
	;
9307 9308

union_list:
9309
	UNION_SYM union_option
9310 9311
	{
	  LEX *lex=Lex;
9312
	  if (lex->result)
9313 9314
	  {
	    /* Only the last SELECT can have  INTO...... */
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	    my_error(ER_WRONG_USAGE, MYF(0), "UNION", "INTO");
9316
	    MYSQL_YYABORT;
9317
	  }
9318
	  if (lex->current_select->linkage == GLOBAL_OPTIONS_TYPE)
9319
	  {
9320 9321
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
9322
	  }
9323 9324
          /* This counter shouldn't be incremented for UNION parts */
          Lex->nest_level--;
9325
	  if (mysql_new_select(lex, 0))
9326
	    MYSQL_YYABORT;
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          mysql_init_select(lex);
9328
	  lex->current_select->linkage=UNION_TYPE;
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          if ($2) /* UNION DISTINCT - remember position */
            lex->current_select->master_unit()->union_distinct=
                                                      lex->current_select;
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	}
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	select_init
        {
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          /*
	    Remove from the name resolution context stack the context of the
            last select in the union.
	  */
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          Lex->pop_context();
        }
9341
	;
9342 9343

union_opt:
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	/* Empty */ { $$= 0; }
	| union_list { $$= 1; }
	| union_order_or_limit { $$= 1; }
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	;
9348

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union_order_or_limit:
9350
	  {
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	    THD *thd= YYTHD;
9352
	    LEX *lex= thd->lex;
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9353
	    DBUG_ASSERT(lex->current_select->linkage != GLOBAL_OPTIONS_TYPE);
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	    SELECT_LEX *sel= lex->current_select;
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	    SELECT_LEX_UNIT *unit= sel->master_unit();
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9356
	    SELECT_LEX *fake= unit->fake_select_lex;
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	    if (fake)
	    {
	      unit->global_parameters= fake;
	      fake->no_table_names_allowed= 1;
	      lex->current_select= fake;
	    }
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	    thd->where= "global ORDER clause";
9364
	  }
9365
	order_or_limit
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          {
	    THD *thd= YYTHD;
9368
	    thd->lex->current_select->no_table_names_allowed= 0;
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	    thd->where= "";
          }
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	;

order_or_limit:
9374 9375
	order_clause opt_limit_clause_init
	| limit_clause
9376
	;
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union_option:
9379 9380 9381 9382
	/* empty */ { $$=1; }
	| DISTINCT  { $$=1; }
	| ALL       { $$=0; }
        ;
9383

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subselect:
        SELECT_SYM subselect_start subselect_init subselect_end
        {
          $$= $3;
        }
        | '(' subselect_start subselect ')'
          {
	    THD *thd= YYTHD;
            /*
              note that a local variable can't be used for
              $3 as it's used in local variable construction
              and some compilers can't guarnatee the order
              in which the local variables are initialized.
            */
            List_iterator<Item> it($3->item_list);
            Item *item;
            /*
              we must fill the items list for the "derived table".
            */
            while ((item= it++))
              add_item_to_list(thd, item);
          }
          union_clause subselect_end { $$= $3; };
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9407

9408
subselect_init:
9409
  select_init2
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  {
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    $$= Lex->current_select->master_unit()->first_select();
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  };

9414
subselect_start:
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	{
9416
	  LEX *lex=Lex;
9417
          if (lex->sql_command == (int)SQLCOM_HA_READ ||
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              lex->sql_command == (int)SQLCOM_KILL ||
              lex->sql_command == (int)SQLCOM_PURGE)
9420
	  {
9421 9422
            my_parse_error(ER(ER_SYNTAX_ERROR));
	    MYSQL_YYABORT;
9423
	  }
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          /* 
            we are making a "derived table" for the parenthesis
            as we need to have a lex level to fit the union 
            after the parenthesis, e.g. 
            (SELECT .. ) UNION ...  becomes 
            SELECT * FROM ((SELECT ...) UNION ...)
          */
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9431
	  if (mysql_new_select(Lex, 1))
9432
	    MYSQL_YYABORT;
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9433
	};
9434 9435

subselect_end:
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	{
	  LEX *lex=Lex;
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          lex->pop_context();
9439
          SELECT_LEX *child= lex->current_select;
9440
	  lex->current_select = lex->current_select->return_after_parsing();
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9441
          lex->nest_level--;
9442
          lex->current_select->n_child_sum_items += child->n_sum_items;
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          /*
            A subselect can add fields to an outer select. Reserve space for
            them.
          */
          lex->current_select->select_n_where_fields+=
            child->select_n_where_fields;
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	};
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9450

9451 9452 9453 9454 9455 9456 9457 9458 9459 9460 9461 9462 9463 9464 9465 9466 9467 9468 9469 9470 9471 9472 9473 9474 9475 9476 9477 9478
/**************************************************************************

 CREATE VIEW | TRIGGER | PROCEDURE statements.

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

view_or_trigger_or_sp:
	definer view_or_trigger_or_sp_tail
	{}
	| view_replace_or_algorithm definer view_tail
	{}
	;

view_or_trigger_or_sp_tail:
	view_tail
	{}
	| trigger_tail
	{}
	| sp_tail
	{}
	;

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

 DEFINER clause support.

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

9479
definer:
9480
	/* empty */
9481
	{
9482 9483 9484 9485 9486 9487 9488 9489
          /*
            We have to distinguish missing DEFINER-clause from case when
            CURRENT_USER specified as definer explicitly in order to properly
            handle CREATE TRIGGER statements which come to replication thread
            from older master servers (i.e. to create non-suid trigger in this
            case).
           */
          YYTHD->lex->definer= 0;
9490
	}
9491
	| DEFINER_SYM EQ user
9492
	{
9493
	  YYTHD->lex->definer= get_current_user(YYTHD, $3);
9494 9495 9496 9497 9498
	}
	;

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

9499
 CREATE VIEW statement parts.
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**************************************************************************/

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

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

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

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

view_suid:
	/* empty */
9535
	{ Lex->create_view_suid= VIEW_SUID_DEFAULT; }
9536
	| SQL_SYM SECURITY_SYM DEFINER_SYM
9537
	{ Lex->create_view_suid= VIEW_SUID_DEFINER; }
9538
	| SQL_SYM SECURITY_SYM INVOKER_SYM
9539
	{ Lex->create_view_suid= VIEW_SUID_INVOKER; }
9540 9541 9542 9543 9544 9545 9546 9547 9548
	;

view_tail:
	view_suid VIEW_SYM table_ident
	{
	  THD *thd= YYTHD;
	  LEX *lex= thd->lex;
	  lex->sql_command= SQLCOM_CREATE_VIEW;
	  /* first table in list is target VIEW name */
9549
	  if (!lex->select_lex.add_table_to_list(thd, $3, NULL, TL_OPTION_UPDATING))
9550
	    MYSQL_YYABORT;
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	}
	view_list_opt AS view_select view_check_option
	{}
	;

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

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

9575
view_select:
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        {
          LEX *lex= Lex;
          lex->parsing_options.allows_variable= FALSE;
          lex->parsing_options.allows_select_into= FALSE;
          lex->parsing_options.allows_select_procedure= FALSE;
          lex->parsing_options.allows_derived= FALSE;
        }        
        view_select_aux
        {
          LEX *lex= Lex;
          lex->parsing_options.allows_variable= TRUE;
          lex->parsing_options.allows_select_into= TRUE;
          lex->parsing_options.allows_select_procedure= TRUE;
          lex->parsing_options.allows_derived= TRUE;
        }
        ;

view_select_aux:
9594 9595
	SELECT_SYM remember_name select_init2
	{
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          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          char *stmt_beg= (lex->sphead ?
                           (char *)lex->sphead->m_tmp_query :
                           thd->query);
	  lex->create_view_select_start= $2 - stmt_beg;
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	}
	| '(' remember_name select_paren ')' union_opt
	{
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          THD *thd=YYTHD;
          LEX *lex= thd->lex;
          char *stmt_beg= (lex->sphead ?
                           (char *)lex->sphead->m_tmp_query :
                           thd->query);
	  lex->create_view_select_start= $2 - stmt_beg;
9611
	}
9612 9613
	;

9614
view_check_option:
9615
	/* empty */
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	{ Lex->create_view_check= VIEW_CHECK_NONE; }
	| WITH CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_CASCADED; }
	| WITH CASCADED CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_CASCADED; }
	| WITH LOCAL_SYM CHECK_SYM OPTION
	{ Lex->create_view_check= VIEW_CHECK_LOCAL; }
9623
	;
9624

9625 9626 9627 9628 9629 9630 9631
/**************************************************************************

 CREATE TRIGGER statement parts.

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

trigger_tail:
9632
	TRIGGER_SYM remember_name sp_name trg_action_time trg_event
9633
	ON remember_name table_ident FOR_SYM remember_name EACH_SYM ROW_SYM
9634
	{
9635 9636 9637
          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;
9638 9639 9640
	  sp_head *sp;
	 
	  if (lex->sphead)
9641
	  {
9642
	    my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "TRIGGER");
9643
	    MYSQL_YYABORT;
9644
	  }
9645 9646
	
	  if (!(sp= new sp_head()))
9647
	    MYSQL_YYABORT;
9648
	  sp->reset_thd_mem_root(thd);
9649
	  sp->init(lex);
9650
	  sp->m_type= TYPE_ENUM_TRIGGER;
9651
          sp->init_sp_name(thd, $3);
9652
	
9653
	  lex->stmt_definition_begin= $2;
9654
          lex->ident.str= $7;
9655
          lex->ident.length= $10 - $7;
9656

9657 9658 9659 9660 9661 9662 9663
	  lex->sphead= sp;
	  lex->spname= $3;
	  /*
	    We have to turn of CLIENT_MULTI_QUERIES while parsing a
	    stored procedure, otherwise yylex will chop it into pieces
	    at each ';'.
	  */
9664 9665
	  sp->m_old_cmq= thd->client_capabilities & CLIENT_MULTI_QUERIES;
	  thd->client_capabilities &= ~CLIENT_MULTI_QUERIES;
9666 9667 9668
	  
	  bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	  lex->sphead->m_chistics= &lex->sp_chistics;
9669
	  lex->sphead->m_body_begin= lip->ptr;
9670 9671
          while (my_isspace(system_charset_info, lex->sphead->m_body_begin[0]))
            ++lex->sphead->m_body_begin;
9672 9673 9674 9675 9676 9677 9678
	}
	sp_proc_stmt
	{
	  LEX *lex= Lex;
	  sp_head *sp= lex->sphead;
	  
	  lex->sql_command= SQLCOM_CREATE_TRIGGER;
9679
	  sp->init_strings(YYTHD, lex);
9680 9681 9682 9683 9684 9685
	  /* Restore flag if it was cleared above */
	  if (sp->m_old_cmq)
	    YYTHD->client_capabilities |= CLIENT_MULTI_QUERIES;
	  sp->restore_thd_mem_root(YYTHD);
	
	  if (sp->is_not_allowed_in_function("trigger"))
9686
	      MYSQL_YYABORT;
9687 9688 9689 9690 9691 9692
	
	  /*
	    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.
	  */
9693
	  if (!lex->select_lex.add_table_to_list(YYTHD, $8,
9694 9695
	                                         (LEX_STRING*) 0,
	                                         TL_OPTION_UPDATING,
9696
                                                 TL_IGNORE))
9697
	    MYSQL_YYABORT;
9698
	}
9699 9700
	;

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

 CREATE FUNCTION | PROCEDURE statements parts.

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

sp_tail:
	udf_func_type remember_name FUNCTION_SYM sp_name
	{
	  LEX *lex=Lex;
	  lex->udf.type= $1;
	  lex->stmt_definition_begin= $2;
	  lex->spname= $4;
	}
	create_function_tail
	{}
	| PROCEDURE remember_name sp_name
	{
	  LEX *lex= Lex;
	  sp_head *sp;

	  if (lex->sphead)
	  {
	    my_error(ER_SP_NO_RECURSIVE_CREATE, MYF(0), "PROCEDURE");
9725
	    MYSQL_YYABORT;
9726
	  }
9727

9728
	  lex->stmt_definition_begin= $2;
9729

9730 9731 9732 9733
	  /* Order is important here: new - reset - init */
	  sp= new sp_head();
	  sp->reset_thd_mem_root(YYTHD);
	  sp->init(lex);
9734
	  sp->m_type= TYPE_ENUM_PROCEDURE;
9735
          sp->init_sp_name(YYTHD, $3);
9736 9737 9738 9739 9740 9741 9742 9743 9744 9745 9746 9747

	  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);
	}
        '('
	{
9748 9749 9750
          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;
9751

9752
	  lex->sphead->m_param_begin= lip->tok_start+1;
9753 9754 9755 9756
	}
	sp_pdparam_list
	')'
	{
9757 9758 9759
          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;
9760

9761
	  lex->sphead->m_param_end= lip->tok_start;
9762 9763 9764 9765
	  bzero((char *)&lex->sp_chistics, sizeof(st_sp_chistics));
	}
	sp_c_chistics
	{
9766 9767 9768
          THD *thd= YYTHD;
	  LEX *lex= thd->lex;
          Lex_input_stream *lip= thd->m_lip;
9769 9770

	  lex->sphead->m_chistics= &lex->sp_chistics;
9771
	  lex->sphead->m_body_begin= lip->tok_start;
9772 9773 9774 9775 9776 9777
	}
	sp_proc_stmt
	{
	  LEX *lex= Lex;
	  sp_head *sp= lex->sphead;

9778
	  sp->init_strings(YYTHD, lex);
9779 9780 9781 9782 9783 9784 9785 9786
	  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);
	}
	;

9787
/*************************************************************************/
9788

9789 9790
xa: XA_SYM begin_or_start xid opt_join_or_resume
      {
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9791
        Lex->sql_command = SQLCOM_XA_START;
9792
      }
9793
    | XA_SYM END xid opt_suspend
9794
      {
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9795
        Lex->sql_command = SQLCOM_XA_END;
9796 9797 9798
      }
    | XA_SYM PREPARE_SYM xid
      {
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9799
        Lex->sql_command = SQLCOM_XA_PREPARE;
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      }
    | XA_SYM COMMIT_SYM xid opt_one_phase
      {
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9803
        Lex->sql_command = SQLCOM_XA_COMMIT;
9804 9805 9806
      }
    | XA_SYM ROLLBACK_SYM xid
      {
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9807
        Lex->sql_command = SQLCOM_XA_ROLLBACK;
9808 9809 9810
      }
    | XA_SYM RECOVER_SYM
      {
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9811
        Lex->sql_command = SQLCOM_XA_RECOVER;
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      }
    ;

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xid: text_string
     {
9817
       MYSQL_YYABORT_UNLESS($1->length() <= MAXGTRIDSIZE);
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9818
       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
9819
         MYSQL_YYABORT;
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       Lex->xid->set(1L, $1->ptr(), $1->length(), 0, 0);
     }
     | text_string ',' text_string
     {
9824
       MYSQL_YYABORT_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
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9825
       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
9826
         MYSQL_YYABORT;
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       Lex->xid->set(1L, $1->ptr(), $1->length(), $3->ptr(), $3->length());
     }
     | text_string ',' text_string ',' ulong_num
     {
9831
       MYSQL_YYABORT_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
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9832
       if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
9833
         MYSQL_YYABORT;
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9834 9835 9836
       Lex->xid->set($5, $1->ptr(), $1->length(), $3->ptr(), $3->length());
     }
     ;
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begin_or_start:   BEGIN_SYM {}
    |             START_SYM {}
    ;

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

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

9853
opt_suspend:
9854 9855
    /* nothing */           { Lex->xa_opt=XA_NONE;        }
    | SUSPEND_SYM           { Lex->xa_opt=XA_SUSPEND;     }
9856 9857 9858 9859 9860
      opt_migrate
    ;

opt_migrate:
    /* nothing */           { }
9861 9862 9863 9864
    | FOR_SYM MIGRATE_SYM   { Lex->xa_opt=XA_FOR_MIGRATE; }
    ;