--- /dev/null
+fix the yacc code in mysql
+
+Signed-off-by: Marcelo Gutierrez (UTN/FRH) <kuyurix@gmail.com>
+---
+diff -uNr mysql-5.1.73.orig/sql/sql_lex.cc mysql-5.1.73/sql/sql_lex.cc
+--- mysql-5.1.73.orig/sql/sql_lex.cc 2013-11-04 18:52:27.000000000 +0000
++++ mysql-5.1.73/sql/sql_lex.cc 2014-02-12 14:12:04.244111625 +0000
+@@ -775,14 +775,13 @@
+ (which can't be followed by a signed number)
+ */
+
+-int MYSQLlex(void *arg, void *yythd)
++int MYSQLlex(void *arg, THD *thd)
+ {
+ reg1 uchar c= 0;
+ bool comment_closed;
+ int tokval, result_state;
+ uint length;
+ enum my_lex_states state;
+- THD *thd= (THD *)yythd;
+ Lex_input_stream *lip= & thd->m_parser_state->m_lip;
+ LEX *lex= thd->lex;
+ YYSTYPE *yylval=(YYSTYPE*) arg;
+diff -uNr mysql-5.1.73.orig/sql/sql_lex.h mysql-5.1.73/sql/sql_lex.h
+--- mysql-5.1.73.orig/sql/sql_lex.h 2013-11-04 18:52:27.000000000 +0000
++++ mysql-5.1.73/sql/sql_lex.h 2014-02-12 14:17:19.424106423 +0000
+@@ -2072,7 +2072,7 @@
+ extern void lex_free(void);
+ extern void lex_start(THD *thd);
+ extern void lex_end(LEX *lex);
+-extern int MYSQLlex(void *arg, void *yythd);
++extern int MYSQLlex(void *arg, THD *thd);
+
+ extern void trim_whitespace(CHARSET_INFO *cs, LEX_STRING *str);
+
+diff -uNr mysql-5.1.73.orig/sql/sql_parse.cc mysql-5.1.73/sql/sql_parse.cc
+--- mysql-5.1.73.orig/sql/sql_parse.cc 2013-11-04 18:52:27.000000000 +0000
++++ mysql-5.1.73/sql/sql_parse.cc 2014-02-12 14:19:20.424104427 +0000
+@@ -8012,7 +8012,7 @@
+ }
+
+
+-extern int MYSQLparse(void *thd); // from sql_yacc.cc
++extern int MYSQLparse(THD *thd); // from sql_yacc.cc
+
+
+ /**
+diff -uNr mysql-5.1.73.orig/sql/sql_yacc.yy mysql-5.1.73/sql/sql_yacc.yy
+--- mysql-5.1.73.orig/sql/sql_yacc.yy 2013-11-04 18:52:27.000000000 +0000
++++ mysql-5.1.73/sql/sql_yacc.yy 2014-02-12 20:17:06.707750140 +0000
+@@ -23,19 +23,13 @@
+ */
+
+ %{
+-/* thd is passed as an argument to yyparse(), and subsequently to yylex().
+-** The type will be void*, so it must be cast to (THD*) when used.
+-** Use the YYTHD macro for this.
+-*/
+-#define YYPARSE_PARAM yythd
+-#define YYLEX_PARAM yythd
+-#define YYTHD ((THD *)yythd)
+-#define YYLIP (& YYTHD->m_parser_state->m_lip)
++
++#define YYLIP (& thd->m_parser_state->m_lip)
+
+ #define MYSQL_YACC
+ #define YYINITDEPTH 100
+ #define YYMAXDEPTH 3200 /* Because of 64K stack */
+-#define Lex (YYTHD->lex)
++#define Lex (thd->lex)
+ #define Select Lex->current_select
+ #include "mysql_priv.h"
+ #include "slave.h"
+@@ -55,7 +49,7 @@
+ #pragma warning (disable : 4065)
+ #endif
+
+-int yylex(void *yylval, void *yythd);
++int yylex(void *yylval, THD *thd);
+
+ const LEX_STRING null_lex_str= {0,0};
+
+@@ -64,7 +58,7 @@
+ ulong val= *(F); \
+ if (my_yyoverflow((B), (D), &val)) \
+ { \
+- yyerror((char*) (A)); \
++ yyerror(current_thd, (char*) (A)); \
+ return 2; \
+ } \
+ else \
+@@ -76,7 +70,7 @@
+ #define MYSQL_YYABORT \
+ do \
+ { \
+- LEX::cleanup_lex_after_parse_error(YYTHD);\
++ LEX::cleanup_lex_after_parse_error(thd);\
+ YYABORT; \
+ } while (0)
+
+@@ -159,9 +153,8 @@
+ to abort from the parser.
+ */
+
+-void MYSQLerror(const char *s)
++void MYSQLerror(THD *thd, const char *s)
+ {
+- THD *thd= current_thd;
+
+ /*
+ Restore the original LEX if it was replaced when parsing
+@@ -675,7 +668,10 @@
+ bool my_yyoverflow(short **a, YYSTYPE **b, ulong *yystacksize);
+ %}
+
+-%pure_parser /* We have threads */
++/* We have threads */
++%define api.pure
++%parse-param { THD *thd }
++%lex-param { THD *thd }
+ /*
+ Currently there are 169 shift/reduce conflicts.
+ We should not introduce new conflicts any more.
+@@ -1516,7 +1512,6 @@
+ query:
+ END_OF_INPUT
+ {
+- THD *thd= YYTHD;
+ if (!thd->bootstrap &&
+ (!(thd->lex->select_lex.options & OPTION_FOUND_COMMENT)))
+ {
+@@ -1530,7 +1525,7 @@
+ {
+ Lex_input_stream *lip = YYLIP;
+
+- if ((YYTHD->client_capabilities & CLIENT_MULTI_QUERIES) &&
++ if ((thd->client_capabilities & CLIENT_MULTI_QUERIES) &&
+ ! lip->stmt_prepare_mode &&
+ ! lip->eof())
+ {
+@@ -1626,7 +1621,6 @@
+ deallocate:
+ deallocate_or_drop PREPARE_SYM ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ lex->sql_command= SQLCOM_DEALLOCATE_PREPARE;
+ lex->prepared_stmt_name= $3;
+@@ -1641,7 +1635,6 @@
+ prepare:
+ PREPARE_SYM ident FROM prepare_src
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ lex->sql_command= SQLCOM_PREPARE;
+ lex->prepared_stmt_name= $2;
+@@ -1651,14 +1644,12 @@
+ prepare_src:
+ TEXT_STRING_sys
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ lex->prepared_stmt_code= $1;
+ lex->prepared_stmt_code_is_varref= FALSE;
+ }
+ | '@' ident_or_text
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ lex->prepared_stmt_code= $2;
+ lex->prepared_stmt_code_is_varref= TRUE;
+@@ -1668,7 +1659,6 @@
+ execute:
+ EXECUTE_SYM ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ lex->sql_command= SQLCOM_EXECUTE;
+ lex->prepared_stmt_name= $2;
+@@ -1826,7 +1816,6 @@
+ create:
+ CREATE opt_table_options TABLE_SYM opt_if_not_exists table_ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ lex->sql_command= SQLCOM_CREATE_TABLE;
+ if (!lex->select_lex.add_table_to_list(thd, $5, NULL,
+@@ -1844,13 +1833,13 @@
+ }
+ create2
+ {
+- LEX *lex= YYTHD->lex;
++ LEX *lex= thd->lex;
+ lex->current_select= &lex->select_lex;
+ if ((lex->create_info.used_fields & HA_CREATE_USED_ENGINE) &&
+ !lex->create_info.db_type)
+ {
+- lex->create_info.db_type= ha_default_handlerton(YYTHD);
+- push_warning_printf(YYTHD, MYSQL_ERROR::WARN_LEVEL_WARN,
++ lex->create_info.db_type= ha_default_handlerton(thd);
++ push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+ ER_WARN_USING_OTHER_HANDLER,
+ ER(ER_WARN_USING_OTHER_HANDLER),
+ ha_resolve_storage_engine_name(lex->create_info.db_type),
+@@ -1979,7 +1968,7 @@
+ event_tail:
+ remember_name EVENT_SYM opt_if_not_exists sp_name
+ {
+- THD *thd= YYTHD;
++ THD *thd= thd;
+ LEX *lex=Lex;
+
+ lex->stmt_definition_begin= $1;
+@@ -2046,7 +2035,7 @@
+ ev_starts:
+ /* empty */
+ {
+- Item *item= new (YYTHD->mem_root) Item_func_now_local();
++ Item *item= new (thd->mem_root) Item_func_now_local();
+ if (item == NULL)
+ MYSQL_YYABORT;
+ Lex->event_parse_data->item_starts= item;
+@@ -2096,7 +2085,6 @@
+
+ ev_sql_stmt:
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+
+@@ -2139,7 +2127,6 @@
+ }
+ ev_sql_stmt_inner
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+
+ /* return back to the original memory root ASAP */
+@@ -2198,11 +2185,10 @@
+ $$= new sp_name($1, $3, true);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+- $$->init_qname(YYTHD);
++ $$->init_qname(thd);
+ }
+ | ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ LEX_STRING db;
+ if (check_routine_name(&$1))
+@@ -2272,7 +2258,7 @@
+ lex->sql_command= SQLCOM_CALL;
+ lex->spname= $2;
+ lex->value_list.empty();
+- sp_add_used_routine(lex, YYTHD, $2, TYPE_ENUM_PROCEDURE);
++ sp_add_used_routine(lex, thd, $2, TYPE_ENUM_PROCEDURE);
+ }
+ opt_sp_cparam_list {}
+ ;
+@@ -2345,7 +2331,7 @@
+ (enum enum_field_types)$3,
+ sp_param_in);
+
+- if (lex->sphead->fill_field_definition(YYTHD, lex,
++ if (lex->sphead->fill_field_definition(thd, lex,
+ (enum enum_field_types) $3,
+ &spvar->field_def))
+ {
+@@ -2382,7 +2368,7 @@
+ (enum enum_field_types)$4,
+ (sp_param_mode_t)$1);
+
+- if (lex->sphead->fill_field_definition(YYTHD, lex,
++ if (lex->sphead->fill_field_definition(thd, lex,
+ (enum enum_field_types) $4,
+ &spvar->field_def))
+ {
+@@ -2445,13 +2431,12 @@
+ {
+ LEX *lex= Lex;
+
+- lex->sphead->reset_lex(YYTHD);
++ lex->sphead->reset_lex(thd);
+ lex->spcont->declare_var_boundary($2);
+ }
+ type
+ sp_opt_default
+ {
+- THD *thd= YYTHD;
+ LEX *lex= Lex;
+ sp_pcontext *pctx= lex->spcont;
+ uint num_vars= pctx->context_var_count();
+@@ -2477,7 +2462,7 @@
+ spvar->type= var_type;
+ spvar->dflt= dflt_value_item;
+
+- if (lex->sphead->fill_field_definition(YYTHD, lex, var_type,
++ if (lex->sphead->fill_field_definition(thd, lex, var_type,
+ &spvar->field_def))
+ {
+ MYSQL_YYABORT;
+@@ -2501,7 +2486,7 @@
+ }
+
+ pctx->declare_var_boundary(0);
+- if (lex->sphead->restore_lex(YYTHD))
++ if (lex->sphead->restore_lex(thd))
+ MYSQL_YYABORT;
+ $$.vars= $2;
+ $$.conds= $$.hndlrs= $$.curs= 0;
+@@ -2516,7 +2501,7 @@
+ my_error(ER_SP_DUP_COND, MYF(0), $2.str);
+ MYSQL_YYABORT;
+ }
+- if(YYTHD->lex->spcont->push_cond(&$2, $5))
++ if(thd->lex->spcont->push_cond(&$2, $5))
+ MYSQL_YYABORT;
+ $$.vars= $$.hndlrs= $$.curs= 0;
+ $$.conds= 1;
+@@ -2602,7 +2587,7 @@
+
+ sp_cursor_stmt:
+ {
+- Lex->sphead->reset_lex(YYTHD);
++ Lex->sphead->reset_lex(thd);
+ }
+ select
+ {
+@@ -2618,7 +2603,7 @@
+ }
+ lex->sp_lex_in_use= TRUE;
+ $$= lex;
+- if (lex->sphead->restore_lex(YYTHD))
++ if (lex->sphead->restore_lex(thd))
+ MYSQL_YYABORT;
+ }
+ ;
+@@ -2662,7 +2647,7 @@
+ sp_cond:
+ ulong_num
+ { /* mysql errno */
+- $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
++ $$= (sp_cond_type_t *)thd->alloc(sizeof(sp_cond_type_t));
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->type= sp_cond_type_t::number;
+@@ -2675,7 +2660,7 @@
+ my_error(ER_SP_BAD_SQLSTATE, MYF(0), $3.str);
+ MYSQL_YYABORT;
+ }
+- $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
++ $$= (sp_cond_type_t *)thd->alloc(sizeof(sp_cond_type_t));
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->type= sp_cond_type_t::state;
+@@ -2705,21 +2690,21 @@
+ }
+ | SQLWARNING_SYM /* SQLSTATEs 01??? */
+ {
+- $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
++ $$= (sp_cond_type_t *)thd->alloc(sizeof(sp_cond_type_t));
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->type= sp_cond_type_t::warning;
+ }
+ | not FOUND_SYM /* SQLSTATEs 02??? */
+ {
+- $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
++ $$= (sp_cond_type_t *)thd->alloc(sizeof(sp_cond_type_t));
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->type= sp_cond_type_t::notfound;
+ }
+ | SQLEXCEPTION_SYM /* All other SQLSTATEs */
+ {
+- $$= (sp_cond_type_t *)YYTHD->alloc(sizeof(sp_cond_type_t));
++ $$= (sp_cond_type_t *)thd->alloc(sizeof(sp_cond_type_t));
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->type= sp_cond_type_t::exception;
+@@ -2789,7 +2774,6 @@
+
+ sp_proc_stmt_statement:
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+
+@@ -2798,7 +2782,6 @@
+ }
+ statement
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+ sp_head *sp= lex->sphead;
+@@ -2845,7 +2828,7 @@
+
+ sp_proc_stmt_return:
+ RETURN_SYM
+- { Lex->sphead->reset_lex(YYTHD); }
++ { Lex->sphead->reset_lex(thd); }
+ expr
+ {
+ LEX *lex= Lex;
+@@ -2867,7 +2850,7 @@
+ MYSQL_YYABORT;
+ sp->m_flags|= sp_head::HAS_RETURN;
+ }
+- if (sp->restore_lex(YYTHD))
++ if (sp->restore_lex(thd))
+ MYSQL_YYABORT;
+ }
+ ;
+@@ -3094,7 +3077,7 @@
+ ;
+
+ sp_if:
+- { Lex->sphead->reset_lex(YYTHD); }
++ { Lex->sphead->reset_lex(thd); }
+ expr THEN_SYM
+ {
+ LEX *lex= Lex;
+@@ -3108,7 +3091,7 @@
+ sp->add_cont_backpatch(i) ||
+ sp->add_instr(i))
+ MYSQL_YYABORT;
+- if (sp->restore_lex(YYTHD))
++ if (sp->restore_lex(thd))
+ MYSQL_YYABORT;
+ }
+ sp_proc_stmts1
+@@ -3147,7 +3130,7 @@
+ {
+ LEX *lex= Lex;
+ case_stmt_action_case(lex);
+- lex->sphead->reset_lex(YYTHD); /* For expr $3 */
++ lex->sphead->reset_lex(thd); /* For expr $3 */
+ }
+ expr
+ {
+@@ -3156,7 +3139,7 @@
+ MYSQL_YYABORT;
+
+ /* For expr $3 */
+- if (lex->sphead->restore_lex(YYTHD))
++ if (lex->sphead->restore_lex(thd))
+ MYSQL_YYABORT;
+ }
+ simple_when_clause_list
+@@ -3198,7 +3181,7 @@
+ simple_when_clause:
+ WHEN_SYM
+ {
+- Lex->sphead->reset_lex(YYTHD); /* For expr $3 */
++ Lex->sphead->reset_lex(thd); /* For expr $3 */
+ }
+ expr
+ {
+@@ -3208,7 +3191,7 @@
+ if (case_stmt_action_when(lex, $3, true))
+ MYSQL_YYABORT;
+ /* For expr $3 */
+- if (lex->sphead->restore_lex(YYTHD))
++ if (lex->sphead->restore_lex(thd))
+ MYSQL_YYABORT;
+ }
+ THEN_SYM
+@@ -3223,7 +3206,7 @@
+ searched_when_clause:
+ WHEN_SYM
+ {
+- Lex->sphead->reset_lex(YYTHD); /* For expr $3 */
++ Lex->sphead->reset_lex(thd); /* For expr $3 */
+ }
+ expr
+ {
+@@ -3231,7 +3214,7 @@
+ if (case_stmt_action_when(lex, $3, false))
+ MYSQL_YYABORT;
+ /* For expr $3 */
+- if (lex->sphead->restore_lex(YYTHD))
++ if (lex->sphead->restore_lex(thd))
+ MYSQL_YYABORT;
+ }
+ THEN_SYM
+@@ -3395,7 +3378,7 @@
+ MYSQL_YYABORT;
+ }
+ | WHILE_SYM
+- { Lex->sphead->reset_lex(YYTHD); }
++ { Lex->sphead->reset_lex(thd); }
+ expr DO_SYM
+ {
+ LEX *lex= Lex;
+@@ -3409,7 +3392,7 @@
+ sp->new_cont_backpatch(i) ||
+ sp->add_instr(i))
+ MYSQL_YYABORT;
+- if (sp->restore_lex(YYTHD))
++ if (sp->restore_lex(thd))
+ MYSQL_YYABORT;
+ }
+ sp_proc_stmts1 END WHILE_SYM
+@@ -3424,7 +3407,7 @@
+ lex->sphead->do_cont_backpatch();
+ }
+ | REPEAT_SYM sp_proc_stmts1 UNTIL_SYM
+- { Lex->sphead->reset_lex(YYTHD); }
++ { Lex->sphead->reset_lex(thd); }
+ expr END REPEAT_SYM
+ {
+ LEX *lex= Lex;
+@@ -3436,7 +3419,7 @@
+ if (i == NULL ||
+ lex->sphead->add_instr(i))
+ MYSQL_YYABORT;
+- if (lex->sphead->restore_lex(YYTHD))
++ if (lex->sphead->restore_lex(thd))
+ MYSQL_YYABORT;
+ /* We can shortcut the cont_backpatch here */
+ i->m_cont_dest= ip+1;
+@@ -3859,7 +3842,6 @@
+ create3 {}
+ | LIKE table_ident
+ {
+- THD *thd= YYTHD;
+ TABLE_LIST *src_table;
+ LEX *lex= thd->lex;
+
+@@ -3873,7 +3855,6 @@
+ }
+ | '(' LIKE table_ident ')'
+ {
+- THD *thd= YYTHD;
+ TABLE_LIST *src_table;
+ LEX *lex= thd->lex;
+
+@@ -4342,7 +4323,6 @@
+ bit_expr
+ {
+ Item *part_expr= $1;
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Name_resolution_context *context= &lex->current_select->context;
+ TABLE_LIST *save_list= context->table_list;
+@@ -4364,7 +4344,7 @@
+ my_error(ER_PARTITION_FUNCTION_IS_NOT_ALLOWED, MYF(0));
+ MYSQL_YYABORT;
+ }
+- if (part_expr->fix_fields(YYTHD, (Item**)0) ||
++ if (part_expr->fix_fields(thd, (Item**)0) ||
+ ((context->table_list= save_list), FALSE) ||
+ (!part_expr->const_item()) ||
+ (!lex->safe_to_cache_query))
+@@ -4629,7 +4609,7 @@
+ | TYPE_SYM opt_equal storage_engines
+ {
+ Lex->create_info.db_type= $3;
+- WARN_DEPRECATED(yythd, "6.0", "TYPE=storage_engine",
++ WARN_DEPRECATED(thd, "6.0", "TYPE=storage_engine",
+ "'ENGINE=storage_engine'");
+ Lex->create_info.used_fields|= HA_CREATE_USED_ENGINE;
+ }
+@@ -4791,19 +4771,19 @@
+ storage_engines:
+ ident_or_text
+ {
+- plugin_ref plugin= ha_resolve_by_name(YYTHD, &$1);
++ plugin_ref plugin= ha_resolve_by_name(thd, &$1);
+
+ if (plugin)
+ $$= plugin_data(plugin, handlerton*);
+ else
+ {
+- if (YYTHD->variables.sql_mode & MODE_NO_ENGINE_SUBSTITUTION)
++ if (thd->variables.sql_mode & MODE_NO_ENGINE_SUBSTITUTION)
+ {
+ my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), $1.str);
+ MYSQL_YYABORT;
+ }
+ $$= 0;
+- push_warning_printf(YYTHD, MYSQL_ERROR::WARN_LEVEL_WARN,
++ push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
+ ER_UNKNOWN_STORAGE_ENGINE,
+ ER(ER_UNKNOWN_STORAGE_ENGINE),
+ $1.str);
+@@ -4815,7 +4795,7 @@
+ ident_or_text
+ {
+ plugin_ref plugin;
+- if ((plugin= ha_resolve_by_name(YYTHD, &$1)))
++ if ((plugin= ha_resolve_by_name(thd, &$1)))
+ $$= plugin_data(plugin, handlerton*);
+ else
+ {
+@@ -5043,7 +5023,7 @@
+ {
+ char buff[sizeof("YEAR()") + MY_INT64_NUM_DECIMAL_DIGITS + 1];
+ my_snprintf(buff, sizeof(buff), "YEAR(%lu)", length);
+- push_warning_printf(YYTHD, MYSQL_ERROR::WARN_LEVEL_NOTE,
++ push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
+ ER_WARN_DEPRECATED_SYNTAX,
+ ER(ER_WARN_DEPRECATED_SYNTAX),
+ buff, "YEAR(4)");
+@@ -5057,7 +5037,7 @@
+ { $$=MYSQL_TYPE_TIME; }
+ | TIMESTAMP opt_field_length
+ {
+- if (YYTHD->variables.sql_mode & MODE_MAXDB)
++ if (thd->variables.sql_mode & MODE_MAXDB)
+ $$=MYSQL_TYPE_DATETIME;
+ else
+ {
+@@ -5189,7 +5169,7 @@
+ real_type:
+ REAL
+ {
+- $$= YYTHD->variables.sql_mode & MODE_REAL_AS_FLOAT ?
++ $$= thd->variables.sql_mode & MODE_REAL_AS_FLOAT ?
+ MYSQL_TYPE_FLOAT : MYSQL_TYPE_DOUBLE;
+ }
+ | DOUBLE_SYM
+@@ -5263,7 +5243,7 @@
+ | DEFAULT now_or_signed_literal { Lex->default_value=$2; }
+ | ON UPDATE_SYM NOW_SYM optional_braces
+ {
+- Item *item= new (YYTHD->mem_root) Item_func_now_local();
++ Item *item= new (thd->mem_root) Item_func_now_local();
+ if (item == NULL)
+ MYSQL_YYABORT;
+ Lex->on_update_value= item;
+@@ -5312,7 +5292,7 @@
+ now_or_signed_literal:
+ NOW_SYM optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_now_local();
++ $$= new (thd->mem_root) Item_func_now_local();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -5673,7 +5653,6 @@
+ alter:
+ ALTER opt_ignore TABLE_SYM table_ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ lex->name.str= 0;
+ lex->name.length= 0;
+@@ -5799,7 +5778,7 @@
+ Event_parse_data.
+ */
+
+- if (!(Lex->event_parse_data= Event_parse_data::new_instance(YYTHD)))
++ if (!(Lex->event_parse_data= Event_parse_data::new_instance(thd)))
+ MYSQL_YYABORT;
+ Lex->event_parse_data->identifier= $4;
+
+@@ -6192,7 +6171,6 @@
+ {
+ if (!$4)
+ {
+- THD *thd= YYTHD;
+ $4= thd->variables.collation_database;
+ }
+ $5= $5 ? $5 : $4;
+@@ -6556,7 +6534,7 @@
+ assign_to_keycache:
+ table_ident cache_keys_spec
+ {
+- if (!Select->add_table_to_list(YYTHD, $1, NULL, 0, TL_READ,
++ if (!Select->add_table_to_list(thd, $1, NULL, 0, TL_READ,
+ Select->pop_index_hints()))
+ MYSQL_YYABORT;
+ }
+@@ -6585,7 +6563,7 @@
+ preload_keys:
+ table_ident cache_keys_spec opt_ignore_leaves
+ {
+- if (!Select->add_table_to_list(YYTHD, $1, NULL, $3, TL_READ,
++ if (!Select->add_table_to_list(thd, $1, NULL, $3, TL_READ,
+ Select->pop_index_hints()))
+ MYSQL_YYABORT;
+ }
+@@ -6593,7 +6571,7 @@
+
+ cache_keys_spec:
+ {
+- Lex->select_lex.alloc_index_hints(YYTHD);
++ Lex->select_lex.alloc_index_hints(thd);
+ Select->set_index_hint_type(INDEX_HINT_USE,
+ global_system_variables.old_mode ?
+ INDEX_HINT_MASK_JOIN :
+@@ -6813,7 +6791,6 @@
+ | select_item
+ | '*'
+ {
+- THD *thd= YYTHD;
+ Item *item= new (thd->mem_root)
+ Item_field(&thd->lex->current_select->context,
+ NULL, NULL, "*");
+@@ -6828,7 +6805,6 @@
+ select_item:
+ remember_name select_item2 remember_end select_alias
+ {
+- THD *thd= YYTHD;
+ DBUG_ASSERT($1 < $3);
+
+ if (add_item_to_list(thd, $2))
+@@ -6929,7 +6905,7 @@
+ else
+ {
+ /* X OR Y */
+- $$ = new (YYTHD->mem_root) Item_cond_or($1, $3);
++ $$ = new (thd->mem_root) Item_cond_or($1, $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -6937,7 +6913,7 @@
+ | expr XOR expr %prec XOR
+ {
+ /* XOR is a proprietary extension */
+- $$ = new (YYTHD->mem_root) Item_cond_xor($1, $3);
++ $$ = new (thd->mem_root) Item_cond_xor($1, $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -6979,50 +6955,50 @@
+ else
+ {
+ /* X AND Y */
+- $$ = new (YYTHD->mem_root) Item_cond_and($1, $3);
++ $$ = new (thd->mem_root) Item_cond_and($1, $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ }
+ | NOT_SYM expr %prec NOT_SYM
+ {
+- $$= negate_expression(YYTHD, $2);
++ $$= negate_expression(thd, $2);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri IS TRUE_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_istrue($1);
++ $$= new (thd->mem_root) Item_func_istrue($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri IS not TRUE_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_isnottrue($1);
++ $$= new (thd->mem_root) Item_func_isnottrue($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri IS FALSE_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_isfalse($1);
++ $$= new (thd->mem_root) Item_func_isfalse($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri IS not FALSE_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_isnotfalse($1);
++ $$= new (thd->mem_root) Item_func_isnotfalse($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri IS UNKNOWN_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_isnull($1);
++ $$= new (thd->mem_root) Item_func_isnull($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri IS not UNKNOWN_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_isnotnull($1);
++ $$= new (thd->mem_root) Item_func_isnotnull($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7032,19 +7008,19 @@
+ bool_pri:
+ bool_pri IS NULL_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_isnull($1);
++ $$= new (thd->mem_root) Item_func_isnull($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri IS not NULL_SYM %prec IS
+ {
+- $$= new (YYTHD->mem_root) Item_func_isnotnull($1);
++ $$= new (thd->mem_root) Item_func_isnotnull($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bool_pri EQUAL_SYM predicate %prec EQUAL_SYM
+ {
+- $$= new (YYTHD->mem_root) Item_func_equal($1,$3);
++ $$= new (thd->mem_root) Item_func_equal($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7066,13 +7042,12 @@
+ predicate:
+ bit_expr IN_SYM '(' subselect ')'
+ {
+- $$= new (YYTHD->mem_root) Item_in_subselect($1, $4);
++ $$= new (thd->mem_root) Item_in_subselect($1, $4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr not IN_SYM '(' subselect ')'
+ {
+- THD *thd= YYTHD;
+ Item *item= new (thd->mem_root) Item_in_subselect($1, $5);
+ if (item == NULL)
+ MYSQL_YYABORT;
+@@ -7082,7 +7057,7 @@
+ }
+ | bit_expr IN_SYM '(' expr ')'
+ {
+- $$= handle_sql2003_note184_exception(YYTHD, $1, true, $4);
++ $$= handle_sql2003_note184_exception(thd, $1, true, $4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7090,13 +7065,13 @@
+ {
+ $6->push_front($4);
+ $6->push_front($1);
+- $$= new (YYTHD->mem_root) Item_func_in(*$6);
++ $$= new (thd->mem_root) Item_func_in(*$6);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr not IN_SYM '(' expr ')'
+ {
+- $$= handle_sql2003_note184_exception(YYTHD, $1, false, $5);
++ $$= handle_sql2003_note184_exception(thd, $1, false, $5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7104,7 +7079,7 @@
+ {
+ $7->push_front($5);
+ $7->push_front($1);
+- Item_func_in *item = new (YYTHD->mem_root) Item_func_in(*$7);
++ Item_func_in *item = new (thd->mem_root) Item_func_in(*$7);
+ if (item == NULL)
+ MYSQL_YYABORT;
+ item->negate();
+@@ -7112,14 +7087,14 @@
+ }
+ | bit_expr BETWEEN_SYM bit_expr AND_SYM predicate
+ {
+- $$= new (YYTHD->mem_root) Item_func_between($1,$3,$5);
++ $$= new (thd->mem_root) Item_func_between($1,$3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr not BETWEEN_SYM bit_expr AND_SYM predicate
+ {
+ Item_func_between *item;
+- item= new (YYTHD->mem_root) Item_func_between($1,$4,$6);
++ item= new (thd->mem_root) Item_func_between($1,$4,$6);
+ if (item == NULL)
+ MYSQL_YYABORT;
+ item->negate();
+@@ -7127,42 +7102,42 @@
+ }
+ | bit_expr SOUNDS_SYM LIKE bit_expr
+ {
+- Item *item1= new (YYTHD->mem_root) Item_func_soundex($1);
+- Item *item4= new (YYTHD->mem_root) Item_func_soundex($4);
++ Item *item1= new (thd->mem_root) Item_func_soundex($1);
++ Item *item4= new (thd->mem_root) Item_func_soundex($4);
+ if ((item1 == NULL) || (item4 == NULL))
+ MYSQL_YYABORT;
+- $$= new (YYTHD->mem_root) Item_func_eq(item1, item4);
++ $$= new (thd->mem_root) Item_func_eq(item1, item4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr LIKE simple_expr opt_escape
+ {
+- $$= new (YYTHD->mem_root) Item_func_like($1,$3,$4,Lex->escape_used);
++ $$= new (thd->mem_root) Item_func_like($1,$3,$4,Lex->escape_used);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr not LIKE simple_expr opt_escape
+ {
+- Item *item= new (YYTHD->mem_root) Item_func_like($1,$4,$5,
++ Item *item= new (thd->mem_root) Item_func_like($1,$4,$5,
+ Lex->escape_used);
+ if (item == NULL)
+ MYSQL_YYABORT;
+- $$= new (YYTHD->mem_root) Item_func_not(item);
++ $$= new (thd->mem_root) Item_func_not(item);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr REGEXP bit_expr
+ {
+- $$= new (YYTHD->mem_root) Item_func_regex($1,$3);
++ $$= new (thd->mem_root) Item_func_regex($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr not REGEXP bit_expr
+ {
+- Item *item= new (YYTHD->mem_root) Item_func_regex($1,$4);
++ Item *item= new (thd->mem_root) Item_func_regex($1,$4);
+ if (item == NULL)
+ MYSQL_YYABORT;
+- $$= negate_expression(YYTHD, item);
++ $$= negate_expression(thd, item);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7172,85 +7147,85 @@
+ bit_expr:
+ bit_expr '|' bit_expr %prec '|'
+ {
+- $$= new (YYTHD->mem_root) Item_func_bit_or($1,$3);
++ $$= new (thd->mem_root) Item_func_bit_or($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '&' bit_expr %prec '&'
+ {
+- $$= new (YYTHD->mem_root) Item_func_bit_and($1,$3);
++ $$= new (thd->mem_root) Item_func_bit_and($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr SHIFT_LEFT bit_expr %prec SHIFT_LEFT
+ {
+- $$= new (YYTHD->mem_root) Item_func_shift_left($1,$3);
++ $$= new (thd->mem_root) Item_func_shift_left($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr SHIFT_RIGHT bit_expr %prec SHIFT_RIGHT
+ {
+- $$= new (YYTHD->mem_root) Item_func_shift_right($1,$3);
++ $$= new (thd->mem_root) Item_func_shift_right($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '+' bit_expr %prec '+'
+ {
+- $$= new (YYTHD->mem_root) Item_func_plus($1,$3);
++ $$= new (thd->mem_root) Item_func_plus($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '-' bit_expr %prec '-'
+ {
+- $$= new (YYTHD->mem_root) Item_func_minus($1,$3);
++ $$= new (thd->mem_root) Item_func_minus($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '+' INTERVAL_SYM expr interval %prec '+'
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($1,$4,$5,0);
++ $$= new (thd->mem_root) Item_date_add_interval($1,$4,$5,0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '-' INTERVAL_SYM expr interval %prec '-'
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($1,$4,$5,1);
++ $$= new (thd->mem_root) Item_date_add_interval($1,$4,$5,1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '*' bit_expr %prec '*'
+ {
+- $$= new (YYTHD->mem_root) Item_func_mul($1,$3);
++ $$= new (thd->mem_root) Item_func_mul($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '/' bit_expr %prec '/'
+ {
+- $$= new (YYTHD->mem_root) Item_func_div($1,$3);
++ $$= new (thd->mem_root) Item_func_div($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '%' bit_expr %prec '%'
+ {
+- $$= new (YYTHD->mem_root) Item_func_mod($1,$3);
++ $$= new (thd->mem_root) Item_func_mod($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr DIV_SYM bit_expr %prec DIV_SYM
+ {
+- $$= new (YYTHD->mem_root) Item_func_int_div($1,$3);
++ $$= new (thd->mem_root) Item_func_int_div($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr MOD_SYM bit_expr %prec MOD_SYM
+ {
+- $$= new (YYTHD->mem_root) Item_func_mod($1,$3);
++ $$= new (thd->mem_root) Item_func_mod($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | bit_expr '^' bit_expr
+ {
+- $$= new (YYTHD->mem_root) Item_func_bit_xor($1,$3);
++ $$= new (thd->mem_root) Item_func_bit_xor($1,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7299,7 +7274,6 @@
+ | function_call_conflict
+ | simple_expr COLLATE_SYM ident_or_text %prec NEG
+ {
+- THD *thd= YYTHD;
+ Item *i1= new (thd->mem_root) Item_string($3.str,
+ $3.length,
+ thd->charset());
+@@ -7315,7 +7289,7 @@
+ | sum_expr
+ | simple_expr OR_OR_SYM simple_expr
+ {
+- $$= new (YYTHD->mem_root) Item_func_concat($1, $3);
++ $$= new (thd->mem_root) Item_func_concat($1, $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7325,25 +7299,25 @@
+ }
+ | '-' simple_expr %prec NEG
+ {
+- $$= new (YYTHD->mem_root) Item_func_neg($2);
++ $$= new (thd->mem_root) Item_func_neg($2);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | '~' simple_expr %prec NEG
+ {
+- $$= new (YYTHD->mem_root) Item_func_bit_neg($2);
++ $$= new (thd->mem_root) Item_func_bit_neg($2);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | not2 simple_expr %prec NEG
+ {
+- $$= negate_expression(YYTHD, $2);
++ $$= negate_expression(thd, $2);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | '(' subselect ')'
+ {
+- $$= new (YYTHD->mem_root) Item_singlerow_subselect($2);
++ $$= new (thd->mem_root) Item_singlerow_subselect($2);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7352,20 +7326,20 @@
+ | '(' expr ',' expr_list ')'
+ {
+ $4->push_front($2);
+- $$= new (YYTHD->mem_root) Item_row(*$4);
++ $$= new (thd->mem_root) Item_row(*$4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | ROW_SYM '(' expr ',' expr_list ')'
+ {
+ $5->push_front($3);
+- $$= new (YYTHD->mem_root) Item_row(*$5);
++ $$= new (thd->mem_root) Item_row(*$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | EXISTS '(' subselect ')'
+ {
+- $$= new (YYTHD->mem_root) Item_exists_subselect($3);
++ $$= new (thd->mem_root) Item_exists_subselect($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7374,7 +7348,7 @@
+ | MATCH ident_list_arg AGAINST '(' bit_expr fulltext_options ')'
+ {
+ $2->push_front($5);
+- Item_func_match *i1= new (YYTHD->mem_root) Item_func_match(*$2, $6);
++ Item_func_match *i1= new (thd->mem_root) Item_func_match(*$2, $6);
+ if (i1 == NULL)
+ MYSQL_YYABORT;
+ Select->add_ftfunc_to_list(i1);
+@@ -7382,7 +7356,7 @@
+ }
+ | BINARY simple_expr %prec NEG
+ {
+- $$= create_func_cast(YYTHD, $2, ITEM_CAST_CHAR, NULL, NULL,
++ $$= create_func_cast(thd, $2, ITEM_CAST_CHAR, NULL, NULL,
+ &my_charset_bin);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+@@ -7390,27 +7364,27 @@
+ | CAST_SYM '(' expr AS cast_type ')'
+ {
+ LEX *lex= Lex;
+- $$= create_func_cast(YYTHD, $3, $5, lex->length, lex->dec,
++ $$= create_func_cast(thd, $3, $5, lex->length, lex->dec,
+ lex->charset);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | CASE_SYM opt_expr when_list opt_else END
+ {
+- $$= new (YYTHD->mem_root) Item_func_case(* $3, $2, $4 );
++ $$= new (thd->mem_root) Item_func_case(* $3, $2, $4 );
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | CONVERT_SYM '(' expr ',' cast_type ')'
+ {
+- $$= create_func_cast(YYTHD, $3, $5, Lex->length, Lex->dec,
++ $$= create_func_cast(thd, $3, $5, Lex->length, Lex->dec,
+ Lex->charset);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | CONVERT_SYM '(' expr USING charset_name ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_conv_charset($3,$5);
++ $$= new (thd->mem_root) Item_func_conv_charset($3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7423,14 +7397,14 @@
+ my_error(ER_WRONG_COLUMN_NAME, MYF(0), il->my_name()->str);
+ MYSQL_YYABORT;
+ }
+- $$= new (YYTHD->mem_root) Item_default_value(Lex->current_context(),
++ $$= new (thd->mem_root) Item_default_value(Lex->current_context(),
+ $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | VALUES '(' simple_ident_nospvar ')'
+ {
+- $$= new (YYTHD->mem_root) Item_insert_value(Lex->current_context(),
++ $$= new (thd->mem_root) Item_insert_value(Lex->current_context(),
+ $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+@@ -7438,7 +7412,7 @@
+ | INTERVAL_SYM expr interval '+' expr %prec INTERVAL_SYM
+ /* we cannot put interval before - */
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($5,$2,$3,0);
++ $$= new (thd->mem_root) Item_date_add_interval($5,$2,$3,0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7453,19 +7427,19 @@
+ function_call_keyword:
+ CHAR_SYM '(' expr_list ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_char(*$3);
++ $$= new (thd->mem_root) Item_func_char(*$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | CHAR_SYM '(' expr_list USING charset_name ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_char(*$3, $5);
++ $$= new (thd->mem_root) Item_func_char(*$3, $5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | CURRENT_USER optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_current_user(Lex->current_context());
++ $$= new (thd->mem_root) Item_func_current_user(Lex->current_context());
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->set_stmt_unsafe();
+@@ -7473,31 +7447,30 @@
+ }
+ | DATE_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_date_typecast($3);
++ $$= new (thd->mem_root) Item_date_typecast($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | DAY_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_dayofmonth($3);
++ $$= new (thd->mem_root) Item_func_dayofmonth($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | HOUR_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_hour($3);
++ $$= new (thd->mem_root) Item_func_hour($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | INSERT '(' expr ',' expr ',' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_insert($3,$5,$7,$9);
++ $$= new (thd->mem_root) Item_func_insert($3,$5,$7,$9);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | INTERVAL_SYM '(' expr ',' expr ')' %prec INTERVAL_SYM
+ {
+- THD *thd= YYTHD;
+ List<Item> *list= new (thd->mem_root) List<Item>;
+ if (list == NULL)
+ MYSQL_YYABORT;
+@@ -7512,7 +7485,6 @@
+ }
+ | INTERVAL_SYM '(' expr ',' expr ',' expr_list ')' %prec INTERVAL_SYM
+ {
+- THD *thd= YYTHD;
+ $7->push_front($5);
+ $7->push_front($3);
+ Item_row *item= new (thd->mem_root) Item_row(*$7);
+@@ -7524,103 +7496,103 @@
+ }
+ | LEFT '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_left($3,$5);
++ $$= new (thd->mem_root) Item_func_left($3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | MINUTE_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_minute($3);
++ $$= new (thd->mem_root) Item_func_minute($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | MONTH_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_month($3);
++ $$= new (thd->mem_root) Item_func_month($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | RIGHT '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_right($3,$5);
++ $$= new (thd->mem_root) Item_func_right($3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SECOND_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_second($3);
++ $$= new (thd->mem_root) Item_func_second($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TIME_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_time_typecast($3);
++ $$= new (thd->mem_root) Item_time_typecast($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TIMESTAMP '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_datetime_typecast($3);
++ $$= new (thd->mem_root) Item_datetime_typecast($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TIMESTAMP '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_add_time($3, $5, 1, 0);
++ $$= new (thd->mem_root) Item_func_add_time($3, $5, 1, 0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_trim($3);
++ $$= new (thd->mem_root) Item_func_trim($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' LEADING expr FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_ltrim($6,$4);
++ $$= new (thd->mem_root) Item_func_ltrim($6,$4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' TRAILING expr FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_rtrim($6,$4);
++ $$= new (thd->mem_root) Item_func_rtrim($6,$4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' BOTH expr FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_trim($6,$4);
++ $$= new (thd->mem_root) Item_func_trim($6,$4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' LEADING FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_ltrim($5);
++ $$= new (thd->mem_root) Item_func_ltrim($5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' TRAILING FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_rtrim($5);
++ $$= new (thd->mem_root) Item_func_rtrim($5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' BOTH FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_trim($5);
++ $$= new (thd->mem_root) Item_func_trim($5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRIM '(' expr FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_trim($5,$3);
++ $$= new (thd->mem_root) Item_func_trim($5,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | USER '(' ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_user();
++ $$= new (thd->mem_root) Item_func_user();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->set_stmt_unsafe();
+@@ -7628,7 +7600,7 @@
+ }
+ | YEAR_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_year($3);
++ $$= new (thd->mem_root) Item_func_year($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7649,34 +7621,34 @@
+ function_call_nonkeyword:
+ ADDDATE_SYM '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($3, $5,
++ $$= new (thd->mem_root) Item_date_add_interval($3, $5,
+ INTERVAL_DAY, 0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | ADDDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($3, $6, $7, 0);
++ $$= new (thd->mem_root) Item_date_add_interval($3, $6, $7, 0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | CURDATE optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_curdate_local();
++ $$= new (thd->mem_root) Item_func_curdate_local();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | CURTIME optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_curtime_local();
++ $$= new (thd->mem_root) Item_func_curtime_local();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | CURTIME '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_curtime_local($3);
++ $$= new (thd->mem_root) Item_func_curtime_local($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+@@ -7684,83 +7656,83 @@
+ | DATE_ADD_INTERVAL '(' expr ',' INTERVAL_SYM expr interval ')'
+ %prec INTERVAL_SYM
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($3,$6,$7,0);
++ $$= new (thd->mem_root) Item_date_add_interval($3,$6,$7,0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | DATE_SUB_INTERVAL '(' expr ',' INTERVAL_SYM expr interval ')'
+ %prec INTERVAL_SYM
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($3,$6,$7,1);
++ $$= new (thd->mem_root) Item_date_add_interval($3,$6,$7,1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | EXTRACT_SYM '(' interval FROM expr ')'
+ {
+- $$=new (YYTHD->mem_root) Item_extract( $3, $5);
++ $$=new (thd->mem_root) Item_extract( $3, $5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | GET_FORMAT '(' date_time_type ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_get_format($3, $5);
++ $$= new (thd->mem_root) Item_func_get_format($3, $5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | NOW_SYM optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_now_local();
++ $$= new (thd->mem_root) Item_func_now_local();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | NOW_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_now_local($3);
++ $$= new (thd->mem_root) Item_func_now_local($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | POSITION_SYM '(' bit_expr IN_SYM expr ')'
+ {
+- $$ = new (YYTHD->mem_root) Item_func_locate($5,$3);
++ $$ = new (thd->mem_root) Item_func_locate($5,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUBDATE_SYM '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($3, $5,
++ $$= new (thd->mem_root) Item_date_add_interval($3, $5,
+ INTERVAL_DAY, 1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUBDATE_SYM '(' expr ',' INTERVAL_SYM expr interval ')'
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($3, $6, $7, 1);
++ $$= new (thd->mem_root) Item_date_add_interval($3, $6, $7, 1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUBSTRING '(' expr ',' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_substr($3,$5,$7);
++ $$= new (thd->mem_root) Item_func_substr($3,$5,$7);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUBSTRING '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_substr($3,$5);
++ $$= new (thd->mem_root) Item_func_substr($3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUBSTRING '(' expr FROM expr FOR_SYM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_substr($3,$5,$7);
++ $$= new (thd->mem_root) Item_func_substr($3,$5,$7);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUBSTRING '(' expr FROM expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_substr($3,$5);
++ $$= new (thd->mem_root) Item_func_substr($3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7775,9 +7747,9 @@
+ */
+ Lex->set_stmt_unsafe();
+ if (global_system_variables.sysdate_is_now == 0)
+- $$= new (YYTHD->mem_root) Item_func_sysdate_local();
++ $$= new (thd->mem_root) Item_func_sysdate_local();
+ else
+- $$= new (YYTHD->mem_root) Item_func_now_local();
++ $$= new (thd->mem_root) Item_func_now_local();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+@@ -7785,42 +7757,42 @@
+ | SYSDATE '(' expr ')'
+ {
+ if (global_system_variables.sysdate_is_now == 0)
+- $$= new (YYTHD->mem_root) Item_func_sysdate_local($3);
++ $$= new (thd->mem_root) Item_func_sysdate_local($3);
+ else
+- $$= new (YYTHD->mem_root) Item_func_now_local($3);
++ $$= new (thd->mem_root) Item_func_now_local($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | TIMESTAMP_ADD '(' interval_time_stamp ',' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_date_add_interval($7,$5,$3,0);
++ $$= new (thd->mem_root) Item_date_add_interval($7,$5,$3,0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TIMESTAMP_DIFF '(' interval_time_stamp ',' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_timestamp_diff($5,$7,$3);
++ $$= new (thd->mem_root) Item_func_timestamp_diff($5,$7,$3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | UTC_DATE_SYM optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_curdate_utc();
++ $$= new (thd->mem_root) Item_func_curdate_utc();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | UTC_TIME_SYM optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_curtime_utc();
++ $$= new (thd->mem_root) Item_func_curtime_utc();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | UTC_TIMESTAMP_SYM optional_braces
+ {
+- $$= new (YYTHD->mem_root) Item_func_now_utc();
++ $$= new (thd->mem_root) Item_func_now_utc();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+@@ -7835,62 +7807,61 @@
+ function_call_conflict:
+ ASCII_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_ascii($3);
++ $$= new (thd->mem_root) Item_func_ascii($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | CHARSET '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_charset($3);
++ $$= new (thd->mem_root) Item_func_charset($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | COALESCE '(' expr_list ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_coalesce(* $3);
++ $$= new (thd->mem_root) Item_func_coalesce(* $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | COLLATION_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_collation($3);
++ $$= new (thd->mem_root) Item_func_collation($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | DATABASE '(' ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_database();
++ $$= new (thd->mem_root) Item_func_database();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ Lex->safe_to_cache_query=0;
+ }
+ | IF '(' expr ',' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_if($3,$5,$7);
++ $$= new (thd->mem_root) Item_func_if($3,$5,$7);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | MICROSECOND_SYM '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_microsecond($3);
++ $$= new (thd->mem_root) Item_func_microsecond($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | MOD_SYM '(' expr ',' expr ')'
+ {
+- $$ = new (YYTHD->mem_root) Item_func_mod($3, $5);
++ $$ = new (thd->mem_root) Item_func_mod($3, $5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | OLD_PASSWORD '(' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_old_password($3);
++ $$= new (thd->mem_root) Item_func_old_password($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | PASSWORD '(' expr ')'
+ {
+- THD *thd= YYTHD;
+ Item* i1;
+ if (thd->variables.old_passwords)
+ i1= new (thd->mem_root) Item_func_old_password($3);
+@@ -7902,31 +7873,30 @@
+ }
+ | QUARTER_SYM '(' expr ')'
+ {
+- $$ = new (YYTHD->mem_root) Item_func_quarter($3);
++ $$ = new (thd->mem_root) Item_func_quarter($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | REPEAT_SYM '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_repeat($3,$5);
++ $$= new (thd->mem_root) Item_func_repeat($3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | REPLACE '(' expr ',' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_replace($3,$5,$7);
++ $$= new (thd->mem_root) Item_func_replace($3,$5,$7);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRUNCATE_SYM '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_round($3,$5,1);
++ $$= new (thd->mem_root) Item_func_round($3,$5,1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | WEEK_SYM '(' expr ')'
+ {
+- THD *thd= YYTHD;
+ Item *i1= new (thd->mem_root) Item_int((char*) "0",
+ thd->variables.default_week_format,
+ 1);
+@@ -7938,7 +7908,7 @@
+ }
+ | WEEK_SYM '(' expr ',' expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_func_week($3,$5);
++ $$= new (thd->mem_root) Item_func_week($3,$5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -7960,52 +7930,52 @@
+ geometry_function:
+ CONTAINS_SYM '(' expr ',' expr ')'
+ {
+- $$= GEOM_NEW(YYTHD,
++ $$= GEOM_NEW(thd,
+ Item_func_spatial_rel($3, $5,
+ Item_func::SP_CONTAINS_FUNC));
+ }
+ | GEOMETRYCOLLECTION '(' expr_list ')'
+ {
+- $$= GEOM_NEW(YYTHD,
++ $$= GEOM_NEW(thd,
+ Item_func_spatial_collection(* $3,
+ Geometry::wkb_geometrycollection,
+ Geometry::wkb_point));
+ }
+ | LINESTRING '(' expr_list ')'
+ {
+- $$= GEOM_NEW(YYTHD,
++ $$= GEOM_NEW(thd,
+ Item_func_spatial_collection(* $3,
+ Geometry::wkb_linestring,
+ Geometry::wkb_point));
+ }
+ | MULTILINESTRING '(' expr_list ')'
+ {
+- $$= GEOM_NEW(YYTHD,
++ $$= GEOM_NEW(thd,
+ Item_func_spatial_collection(* $3,
+ Geometry::wkb_multilinestring,
+ Geometry::wkb_linestring));
+ }
+ | MULTIPOINT '(' expr_list ')'
+ {
+- $$= GEOM_NEW(YYTHD,
++ $$= GEOM_NEW(thd,
+ Item_func_spatial_collection(* $3,
+ Geometry::wkb_multipoint,
+ Geometry::wkb_point));
+ }
+ | MULTIPOLYGON '(' expr_list ')'
+ {
+- $$= GEOM_NEW(YYTHD,
++ $$= GEOM_NEW(thd,
+ Item_func_spatial_collection(* $3,
+ Geometry::wkb_multipolygon,
+ Geometry::wkb_polygon));
+ }
+ | POINT_SYM '(' expr ',' expr ')'
+ {
+- $$= GEOM_NEW(YYTHD, Item_func_point($3,$5));
++ $$= GEOM_NEW(thd, Item_func_point($3,$5));
+ }
+ | POLYGON '(' expr_list ')'
+ {
+- $$= GEOM_NEW(YYTHD,
++ $$= GEOM_NEW(thd,
+ Item_func_spatial_collection(* $3,
+ Geometry::wkb_polygon,
+ Geometry::wkb_linestring));
+@@ -8043,7 +8013,6 @@
+ }
+ opt_udf_expr_list ')'
+ {
+- THD *thd= YYTHD;
+ Create_func *builder;
+ Item *item= NULL;
+
+@@ -8097,7 +8066,6 @@
+ }
+ | ident '.' ident '(' opt_expr_list ')'
+ {
+- THD *thd= YYTHD;
+ Create_qfunc *builder;
+ Item *item= NULL;
+
+@@ -8161,7 +8129,7 @@
+ udf_expr_list:
+ udf_expr
+ {
+- $$= new (YYTHD->mem_root) List<Item>;
++ $$= new (thd->mem_root) List<Item>;
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->push_back($1);
+@@ -8194,7 +8162,7 @@
+ remember_name we may get quoted or escaped names.
+ */
+ else if ($2->type() != Item::FIELD_ITEM)
+- $2->set_name($1, (uint) ($3 - $1), YYTHD->charset());
++ $2->set_name($1, (uint) ($3 - $1), thd->charset());
+ $$= $2;
+ }
+ ;
+@@ -8202,46 +8170,46 @@
+ sum_expr:
+ AVG_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_avg($3);
++ $$= new (thd->mem_root) Item_sum_avg($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | AVG_SYM '(' DISTINCT in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_avg_distinct($4);
++ $$= new (thd->mem_root) Item_sum_avg_distinct($4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | BIT_AND '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_and($3);
++ $$= new (thd->mem_root) Item_sum_and($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | BIT_OR '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_or($3);
++ $$= new (thd->mem_root) Item_sum_or($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | BIT_XOR '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_xor($3);
++ $$= new (thd->mem_root) Item_sum_xor($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | COUNT_SYM '(' opt_all '*' ')'
+ {
+- Item *item= new (YYTHD->mem_root) Item_int((int32) 0L,1);
++ Item *item= new (thd->mem_root) Item_int((int32) 0L,1);
+ if (item == NULL)
+ MYSQL_YYABORT;
+- $$= new (YYTHD->mem_root) Item_sum_count(item);
++ $$= new (thd->mem_root) Item_sum_count(item);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | COUNT_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_count($3);
++ $$= new (thd->mem_root) Item_sum_count($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -8251,13 +8219,13 @@
+ { Select->in_sum_expr--; }
+ ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_count_distinct(* $5);
++ $$= new (thd->mem_root) Item_sum_count_distinct(* $5);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | MIN_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_min($3);
++ $$= new (thd->mem_root) Item_sum_min($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -8268,55 +8236,55 @@
+ */
+ | MIN_SYM '(' DISTINCT in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_min($4);
++ $$= new (thd->mem_root) Item_sum_min($4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | MAX_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_max($3);
++ $$= new (thd->mem_root) Item_sum_max($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | MAX_SYM '(' DISTINCT in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_max($4);
++ $$= new (thd->mem_root) Item_sum_max($4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | STD_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_std($3, 0);
++ $$= new (thd->mem_root) Item_sum_std($3, 0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | VARIANCE_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_variance($3, 0);
++ $$= new (thd->mem_root) Item_sum_variance($3, 0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | STDDEV_SAMP_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_std($3, 1);
++ $$= new (thd->mem_root) Item_sum_std($3, 1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | VAR_SAMP_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_variance($3, 1);
++ $$= new (thd->mem_root) Item_sum_variance($3, 1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUM_SYM '(' in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_sum($3);
++ $$= new (thd->mem_root) Item_sum_sum($3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | SUM_SYM '(' DISTINCT in_sum_expr ')'
+ {
+- $$= new (YYTHD->mem_root) Item_sum_sum_distinct($4);
++ $$= new (thd->mem_root) Item_sum_sum_distinct($4);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -8328,7 +8296,7 @@
+ {
+ SELECT_LEX *sel= Select;
+ sel->in_sum_expr--;
+- $$= new (YYTHD->mem_root)
++ $$= new (thd->mem_root)
+ Item_func_group_concat(Lex->current_context(), $3, $5,
+ sel->gorder_list, $7);
+ if ($$ == NULL)
+@@ -8357,7 +8325,7 @@
+ ident_or_text SET_VAR expr
+ {
+ Item_func_set_user_var *item;
+- $$= item= new (YYTHD->mem_root) Item_func_set_user_var($1, $3);
++ $$= item= new (thd->mem_root) Item_func_set_user_var($1, $3);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ LEX *lex= Lex;
+@@ -8366,7 +8334,7 @@
+ }
+ | ident_or_text
+ {
+- $$= new (YYTHD->mem_root) Item_func_get_user_var($1);
++ $$= new (thd->mem_root) Item_func_get_user_var($1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ LEX *lex= Lex;
+@@ -8380,7 +8348,7 @@
+ my_parse_error(ER(ER_SYNTAX_ERROR));
+ MYSQL_YYABORT;
+ }
+- if (!($$= get_system_var(YYTHD, $2, $3, $4)))
++ if (!($$= get_system_var(thd, $2, $3, $4)))
+ MYSQL_YYABORT;
+ if (!((Item_func_get_system_var*) $$)->is_written_to_binlog())
+ Lex->set_stmt_unsafe();
+@@ -8395,7 +8363,7 @@
+ opt_gconcat_separator:
+ /* empty */
+ {
+- $$= new (YYTHD->mem_root) String(",", 1, &my_charset_latin1);
++ $$= new (thd->mem_root) String(",", 1, &my_charset_latin1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -8422,9 +8390,9 @@
+
+ gorder_list:
+ gorder_list ',' order_ident order_dir
+- { if (add_gorder_to_list(YYTHD, $3,(bool) $4)) MYSQL_YYABORT; }
++ { if (add_gorder_to_list(thd, $3,(bool) $4)) MYSQL_YYABORT; }
+ | order_ident order_dir
+- { if (add_gorder_to_list(YYTHD, $1,(bool) $2)) MYSQL_YYABORT; }
++ { if (add_gorder_to_list(thd, $1,(bool) $2)) MYSQL_YYABORT; }
+ ;
+
+ in_sum_expr:
+@@ -8477,7 +8445,7 @@
+ expr_list:
+ expr
+ {
+- $$= new (YYTHD->mem_root) List<Item>;
++ $$= new (thd->mem_root) List<Item>;
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->push_back($1);
+@@ -8497,7 +8465,7 @@
+ ident_list:
+ simple_ident
+ {
+- $$= new (YYTHD->mem_root) List<Item>;
++ $$= new (thd->mem_root) List<Item>;
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ $$->push_back($1);
+@@ -8595,7 +8563,7 @@
+ {
+ MYSQL_YYABORT_UNLESS($1 && $3);
+ /* Change the current name resolution context to a local context. */
+- if (push_new_name_resolution_context(YYTHD, $1, $3))
++ if (push_new_name_resolution_context(thd, $1, $3))
+ MYSQL_YYABORT;
+ Select->parsing_place= IN_ON;
+ }
+@@ -8610,7 +8578,7 @@
+ {
+ MYSQL_YYABORT_UNLESS($1 && $3);
+ /* Change the current name resolution context to a local context. */
+- if (push_new_name_resolution_context(YYTHD, $1, $3))
++ if (push_new_name_resolution_context(thd, $1, $3))
+ MYSQL_YYABORT;
+ Select->parsing_place= IN_ON;
+ }
+@@ -8640,7 +8608,7 @@
+ {
+ MYSQL_YYABORT_UNLESS($1 && $5);
+ /* Change the current name resolution context to a local context. */
+- if (push_new_name_resolution_context(YYTHD, $1, $5))
++ if (push_new_name_resolution_context(thd, $1, $5))
+ MYSQL_YYABORT;
+ Select->parsing_place= IN_ON;
+ }
+@@ -8676,7 +8644,7 @@
+ {
+ MYSQL_YYABORT_UNLESS($1 && $5);
+ /* Change the current name resolution context to a local context. */
+- if (push_new_name_resolution_context(YYTHD, $1, $5))
++ if (push_new_name_resolution_context(thd, $1, $5))
+ MYSQL_YYABORT;
+ Select->parsing_place= IN_ON;
+ }
+@@ -8724,7 +8692,7 @@
+ }
+ table_ident opt_table_alias opt_key_definition
+ {
+- if (!($$= Select->add_table_to_list(YYTHD, $2, $3,
++ if (!($$= Select->add_table_to_list(thd, $2, $3,
+ Select->get_table_join_options(),
+ Lex->lock_option,
+ Select->pop_index_hints())))
+@@ -8922,7 +8890,7 @@
+
+ opt_index_hints_list:
+ /* empty */
+- | { Select->alloc_index_hints(YYTHD); } index_hints_list
++ | { Select->alloc_index_hints(thd); } index_hints_list
+ ;
+
+ opt_key_definition:
+@@ -8931,15 +8899,15 @@
+ ;
+
+ opt_key_usage_list:
+- /* empty */ { Select->add_index_hint(YYTHD, NULL, 0); }
++ /* empty */ { Select->add_index_hint(thd, NULL, 0); }
+ | key_usage_list {}
+ ;
+
+ key_usage_element:
+ ident
+- { Select->add_index_hint(YYTHD, $1.str, $1.length); }
++ { Select->add_index_hint(thd, $1.str, $1.length); }
+ | PRIMARY_SYM
+- { Select->add_index_hint(YYTHD, (char *)"PRIMARY", 7); }
++ { Select->add_index_hint(thd, (char *)"PRIMARY", 7); }
+ ;
+
+ key_usage_list:
+@@ -8952,7 +8920,7 @@
+ {
+ if (!($$= new List<String>))
+ MYSQL_YYABORT;
+- String *s= new (YYTHD->mem_root) String((const char *) $1.str,
++ String *s= new (thd->mem_root) String((const char *) $1.str,
+ $1.length,
+ system_charset_info);
+ if (s == NULL)
+@@ -8961,7 +8929,7 @@
+ }
+ | using_list ',' ident
+ {
+- String *s= new (YYTHD->mem_root) String((const char *) $3.str,
++ String *s= new (thd->mem_root) String((const char *) $3.str,
+ $3.length,
+ system_charset_info);
+ if (s == NULL)
+@@ -9002,7 +8970,7 @@
+ implementation without changing its
+ resolution.
+ */
+- WARN_DEPRECATED(yythd, VER_CELOSIA, "FRAC_SECOND", "MICROSECOND");
++ WARN_DEPRECATED(thd, VER_CELOSIA, "FRAC_SECOND", "MICROSECOND");
+ }
+ ;
+
+@@ -9086,7 +9054,6 @@
+ }
+ | /* empty */
+ {
+- THD *thd= YYTHD;
+ Lex->escape_used= FALSE;
+ $$= ((thd->variables.sql_mode & MODE_NO_BACKSLASH_ESCAPES) ?
+ new (thd->mem_root) Item_string("", 0, &my_charset_latin1) :
+@@ -9107,9 +9074,9 @@
+
+ group_list:
+ group_list ',' order_ident order_dir
+- { if (add_group_to_list(YYTHD, $3,(bool) $4)) MYSQL_YYABORT; }
++ { if (add_group_to_list(thd, $3,(bool) $4)) MYSQL_YYABORT; }
+ | order_ident order_dir
+- { if (add_group_to_list(YYTHD, $1,(bool) $2)) MYSQL_YYABORT; }
++ { if (add_group_to_list(thd, $1,(bool) $2)) MYSQL_YYABORT; }
+ ;
+
+ olap_opt:
+@@ -9156,7 +9123,6 @@
+ 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))
+ MYSQL_YYABORT;
+@@ -9209,9 +9175,9 @@
+
+ order_list:
+ order_list ',' order_ident order_dir
+- { if (add_order_to_list(YYTHD, $3,(bool) $4)) MYSQL_YYABORT; }
++ { if (add_order_to_list(thd, $3,(bool) $4)) MYSQL_YYABORT; }
+ | order_ident order_dir
+- { if (add_order_to_list(YYTHD, $1,(bool) $2)) MYSQL_YYABORT; }
++ { if (add_order_to_list(thd, $1,(bool) $2)) MYSQL_YYABORT; }
+ ;
+
+ order_dir:
+@@ -9271,19 +9237,19 @@
+ }
+ | ULONGLONG_NUM
+ {
+- $$= new (YYTHD->mem_root) Item_uint($1.str, $1.length);
++ $$= new (thd->mem_root) Item_uint($1.str, $1.length);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | LONG_NUM
+ {
+- $$= new (YYTHD->mem_root) Item_uint($1.str, $1.length);
++ $$= new (thd->mem_root) Item_uint($1.str, $1.length);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | NUM
+ {
+- $$= new (YYTHD->mem_root) Item_uint($1.str, $1.length);
++ $$= new (thd->mem_root) Item_uint($1.str, $1.length);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -9365,7 +9331,7 @@
+ lex->proc_list.elements=0;
+ lex->proc_list.first=0;
+ lex->proc_list.next= &lex->proc_list.first;
+- Item_field *item= new (YYTHD->mem_root)
++ Item_field *item= new (thd->mem_root)
+ Item_field(&lex->current_select->context,
+ NULL, NULL, $2.str);
+ if (item == NULL)
+@@ -9390,8 +9356,7 @@
+ procedure_item:
+ remember_name expr remember_end
+ {
+- THD *thd= YYTHD;
+-
++
+ if (add_proc_to_list(thd, $2))
+ MYSQL_YYABORT;
+ if (!$2->name)
+@@ -9560,7 +9525,6 @@
+ }
+ | DROP FUNCTION_SYM if_exists ident '.' ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ sp_name *spname;
+ if ($4.str && check_db_name(&$4))
+@@ -9583,7 +9547,6 @@
+ }
+ | DROP FUNCTION_SYM if_exists ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ LEX_STRING db= {0, 0};
+ sp_name *spname;
+@@ -9664,7 +9627,7 @@
+ table_name:
+ table_ident
+ {
+- if (!Select->add_table_to_list(YYTHD, $1, NULL, TL_OPTION_UPDATING))
++ if (!Select->add_table_to_list(thd, $1, NULL, TL_OPTION_UPDATING))
+ MYSQL_YYABORT;
+ }
+ ;
+@@ -9677,7 +9640,7 @@
+ table_alias_ref:
+ table_ident_opt_wild
+ {
+- if (!Select->add_table_to_list(YYTHD, $1, NULL,
++ if (!Select->add_table_to_list(thd, $1, NULL,
+ TL_OPTION_UPDATING | TL_OPTION_ALIAS,
+ Lex->lock_option ))
+ MYSQL_YYABORT;
+@@ -9868,7 +9831,7 @@
+ expr { $$= $1;}
+ | DEFAULT
+ {
+- $$= new (YYTHD->mem_root) Item_default_value(Lex->current_context());
++ $$= new (thd->mem_root) Item_default_value(Lex->current_context());
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -9922,7 +9885,7 @@
+ update_elem:
+ simple_ident_nospvar equal expr_or_default
+ {
+- if (add_item_to_list(YYTHD, $1) || add_value_to_list(YYTHD, $3))
++ if (add_item_to_list(thd, $1) || add_value_to_list(thd, $3))
+ MYSQL_YYABORT;
+ }
+ ;
+@@ -9965,7 +9928,7 @@
+ single_multi:
+ FROM table_ident
+ {
+- if (!Select->add_table_to_list(YYTHD, $2, NULL, TL_OPTION_UPDATING,
++ if (!Select->add_table_to_list(thd, $2, NULL, TL_OPTION_UPDATING,
+ Lex->lock_option))
+ MYSQL_YYABORT;
+ }
+@@ -9998,7 +9961,7 @@
+ Table_ident *ti= new Table_ident($1);
+ if (ti == NULL)
+ MYSQL_YYABORT;
+- if (!Select->add_table_to_list(YYTHD,
++ if (!Select->add_table_to_list(thd,
+ ti,
+ $3,
+ TL_OPTION_UPDATING | TL_OPTION_ALIAS,
+@@ -10007,10 +9970,10 @@
+ }
+ | ident '.' ident opt_wild opt_table_alias
+ {
+- Table_ident *ti= new Table_ident(YYTHD, $1, $3, 0);
++ Table_ident *ti= new Table_ident(thd, $1, $3, 0);
+ if (ti == NULL)
+ MYSQL_YYABORT;
+- if (!Select->add_table_to_list(YYTHD,
++ if (!Select->add_table_to_list(thd,
+ ti,
+ $5,
+ TL_OPTION_UPDATING | TL_OPTION_ALIAS,
+@@ -10130,7 +10093,7 @@
+ {
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_DATABASES;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_SCHEMATA))
++ if (prepare_schema_table(thd, lex, 0, SCH_SCHEMATA))
+ MYSQL_YYABORT;
+ }
+ | opt_full TABLES opt_db wild_and_where
+@@ -10138,7 +10101,7 @@
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_TABLES;
+ lex->select_lex.db= $3;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLE_NAMES))
++ if (prepare_schema_table(thd, lex, 0, SCH_TABLE_NAMES))
+ MYSQL_YYABORT;
+ }
+ | opt_full TRIGGERS_SYM opt_db wild_and_where
+@@ -10146,7 +10109,7 @@
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_TRIGGERS;
+ lex->select_lex.db= $3;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_TRIGGERS))
++ if (prepare_schema_table(thd, lex, 0, SCH_TRIGGERS))
+ MYSQL_YYABORT;
+ }
+ | EVENTS_SYM opt_db wild_and_where
+@@ -10154,7 +10117,7 @@
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_EVENTS;
+ lex->select_lex.db= $2;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_EVENTS))
++ if (prepare_schema_table(thd, lex, 0, SCH_EVENTS))
+ MYSQL_YYABORT;
+ }
+ | TABLE_SYM STATUS_SYM opt_db wild_and_where
+@@ -10162,7 +10125,7 @@
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_TABLE_STATUS;
+ lex->select_lex.db= $3;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_TABLES))
++ if (prepare_schema_table(thd, lex, 0, SCH_TABLES))
+ MYSQL_YYABORT;
+ }
+ | OPEN_SYM TABLES opt_db wild_and_where
+@@ -10170,22 +10133,22 @@
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_OPEN_TABLES;
+ lex->select_lex.db= $3;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_OPEN_TABLES))
++ if (prepare_schema_table(thd, lex, 0, SCH_OPEN_TABLES))
+ MYSQL_YYABORT;
+ }
+ | opt_full PLUGIN_SYM
+ {
+ LEX *lex= Lex;
+- WARN_DEPRECATED(yythd, "6.0", "SHOW PLUGIN", "'SHOW PLUGINS'");
++ WARN_DEPRECATED(thd, "6.0", "SHOW PLUGIN", "'SHOW PLUGINS'");
+ lex->sql_command= SQLCOM_SHOW_PLUGINS;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_PLUGINS))
++ if (prepare_schema_table(thd, lex, 0, SCH_PLUGINS))
+ MYSQL_YYABORT;
+ }
+ | PLUGINS_SYM
+ {
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_PLUGINS;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_PLUGINS))
++ if (prepare_schema_table(thd, lex, 0, SCH_PLUGINS))
+ MYSQL_YYABORT;
+ }
+ | ENGINE_SYM known_storage_engines show_engine_param
+@@ -10198,7 +10161,7 @@
+ lex->sql_command= SQLCOM_SHOW_FIELDS;
+ if ($5)
+ $4->change_db($5);
+- if (prepare_schema_table(YYTHD, lex, $4, SCH_COLUMNS))
++ if (prepare_schema_table(thd, lex, $4, SCH_COLUMNS))
+ MYSQL_YYABORT;
+ }
+ | NEW_SYM MASTER_SYM FOR_SYM SLAVE
+@@ -10233,7 +10196,7 @@
+ lex->sql_command= SQLCOM_SHOW_KEYS;
+ if ($4)
+ $3->change_db($4);
+- if (prepare_schema_table(YYTHD, lex, $3, SCH_STATISTICS))
++ if (prepare_schema_table(thd, lex, $3, SCH_STATISTICS))
+ MYSQL_YYABORT;
+ }
+ | COLUMN_SYM TYPES_SYM
+@@ -10245,15 +10208,15 @@
+ {
+ LEX *lex=Lex;
+ lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
+- WARN_DEPRECATED(yythd, "6.0", "SHOW TABLE TYPES", "'SHOW [STORAGE] ENGINES'");
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_ENGINES))
++ WARN_DEPRECATED(thd, "6.0", "SHOW TABLE TYPES", "'SHOW [STORAGE] ENGINES'");
++ if (prepare_schema_table(thd, lex, 0, SCH_ENGINES))
+ MYSQL_YYABORT;
+ }
+ | opt_storage ENGINES_SYM
+ {
+ LEX *lex=Lex;
+ lex->sql_command= SQLCOM_SHOW_STORAGE_ENGINES;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_ENGINES))
++ if (prepare_schema_table(thd, lex, 0, SCH_ENGINES))
+ MYSQL_YYABORT;
+ }
+ | AUTHORS_SYM
+@@ -10285,7 +10248,7 @@
+ {
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_PROFILE;
+- if (prepare_schema_table(YYTHD, lex, NULL, SCH_PROFILES) != 0)
++ if (prepare_schema_table(thd, lex, NULL, SCH_PROFILES) != 0)
+ YYABORT;
+ }
+ | opt_var_type STATUS_SYM wild_and_where
+@@ -10293,7 +10256,7 @@
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_STATUS;
+ lex->option_type= $1;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_STATUS))
++ if (prepare_schema_table(thd, lex, 0, SCH_STATUS))
+ MYSQL_YYABORT;
+ }
+ | INNOBASE_SYM STATUS_SYM
+@@ -10301,24 +10264,24 @@
+ LEX *lex= Lex;
+ lex->sql_command = SQLCOM_SHOW_ENGINE_STATUS;
+ if (!(lex->create_info.db_type=
+- ha_resolve_by_legacy_type(YYTHD, DB_TYPE_INNODB)))
++ ha_resolve_by_legacy_type(thd, DB_TYPE_INNODB)))
+ {
+ my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), "InnoDB");
+ MYSQL_YYABORT;
+ }
+- WARN_DEPRECATED(yythd, "6.0", "SHOW INNODB STATUS", "'SHOW ENGINE INNODB STATUS'");
++ WARN_DEPRECATED(thd, "6.0", "SHOW INNODB STATUS", "'SHOW ENGINE INNODB STATUS'");
+ }
+ | MUTEX_SYM STATUS_SYM
+ {
+ LEX *lex= Lex;
+ lex->sql_command = SQLCOM_SHOW_ENGINE_MUTEX;
+ if (!(lex->create_info.db_type=
+- ha_resolve_by_legacy_type(YYTHD, DB_TYPE_INNODB)))
++ ha_resolve_by_legacy_type(thd, DB_TYPE_INNODB)))
+ {
+ my_error(ER_UNKNOWN_STORAGE_ENGINE, MYF(0), "InnoDB");
+ MYSQL_YYABORT;
+ }
+- WARN_DEPRECATED(yythd, "6.0", "SHOW MUTEX STATUS", "'SHOW ENGINE INNODB MUTEX'");
++ WARN_DEPRECATED(thd, "6.0", "SHOW MUTEX STATUS", "'SHOW ENGINE INNODB MUTEX'");
+ }
+ | opt_full PROCESSLIST_SYM
+ { Lex->sql_command= SQLCOM_SHOW_PROCESSLIST;}
+@@ -10327,21 +10290,21 @@
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_VARIABLES;
+ lex->option_type= $1;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_VARIABLES))
++ if (prepare_schema_table(thd, lex, 0, SCH_VARIABLES))
+ MYSQL_YYABORT;
+ }
+ | charset wild_and_where
+ {
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_CHARSETS;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_CHARSETS))
++ if (prepare_schema_table(thd, lex, 0, SCH_CHARSETS))
+ MYSQL_YYABORT;
+ }
+ | COLLATION_SYM wild_and_where
+ {
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_COLLATIONS;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_COLLATIONS))
++ if (prepare_schema_table(thd, lex, 0, SCH_COLLATIONS))
+ MYSQL_YYABORT;
+ }
+ | GRANTS
+@@ -10371,7 +10334,7 @@
+ {
+ LEX *lex= Lex;
+ lex->sql_command = SQLCOM_SHOW_CREATE;
+- if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL,0))
++ if (!lex->select_lex.add_table_to_list(thd, $3, NULL,0))
+ MYSQL_YYABORT;
+ lex->only_view= 0;
+ lex->create_info.storage_media= HA_SM_DEFAULT;
+@@ -10380,7 +10343,7 @@
+ {
+ LEX *lex= Lex;
+ lex->sql_command = SQLCOM_SHOW_CREATE;
+- if (!lex->select_lex.add_table_to_list(YYTHD, $3, NULL, 0))
++ if (!lex->select_lex.add_table_to_list(thd, $3, NULL, 0))
+ MYSQL_YYABORT;
+ lex->only_view= 1;
+ }
+@@ -10416,14 +10379,14 @@
+ {
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_STATUS_PROC;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
++ if (prepare_schema_table(thd, lex, 0, SCH_PROCEDURES))
+ MYSQL_YYABORT;
+ }
+ | FUNCTION_SYM STATUS_SYM wild_and_where
+ {
+ LEX *lex= Lex;
+ lex->sql_command= SQLCOM_SHOW_STATUS_FUNC;
+- if (prepare_schema_table(YYTHD, lex, 0, SCH_PROCEDURES))
++ if (prepare_schema_table(thd, lex, 0, SCH_PROCEDURES))
+ MYSQL_YYABORT;
+ }
+ | PROCEDURE CODE_SYM sp_name
+@@ -10501,7 +10464,7 @@
+ /* empty */
+ | LIKE TEXT_STRING_sys
+ {
+- Lex->wild= new (YYTHD->mem_root) String($2.str, $2.length,
++ Lex->wild= new (thd->mem_root) String($2.str, $2.length,
+ system_charset_info);
+ if (Lex->wild == NULL)
+ MYSQL_YYABORT;
+@@ -10525,7 +10488,7 @@
+ lex->sql_command= SQLCOM_SHOW_FIELDS;
+ lex->select_lex.db= 0;
+ lex->verbose= 0;
+- if (prepare_schema_table(YYTHD, lex, $2, SCH_COLUMNS))
++ if (prepare_schema_table(thd, lex, $2, SCH_COLUMNS))
+ MYSQL_YYABORT;
+ }
+ opt_describe_column {}
+@@ -10554,7 +10517,7 @@
+ | text_string { Lex->wild= $1; }
+ | ident
+ {
+- Lex->wild= new (YYTHD->mem_root) String((const char*) $1.str,
++ Lex->wild= new (thd->mem_root) String((const char*) $1.str,
+ $1.length,
+ system_charset_info);
+ if (Lex->wild == NULL)
+@@ -10697,7 +10660,6 @@
+ load:
+ LOAD DATA_SYM
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+
+ if (lex->sphead)
+@@ -10711,7 +10673,7 @@
+ | LOAD TABLE_SYM table_ident FROM MASTER_SYM
+ {
+ LEX *lex=Lex;
+- WARN_DEPRECATED(yythd, "6.0", "LOAD TABLE FROM MASTER",
++ WARN_DEPRECATED(thd, "6.0", "LOAD TABLE FROM MASTER",
+ "MySQL Administrator (mysqldump, mysql)");
+ if (lex->sphead)
+ {
+@@ -10719,7 +10681,7 @@
+ MYSQL_YYABORT;
+ }
+ lex->sql_command = SQLCOM_LOAD_MASTER_TABLE;
+- if (!Select->add_table_to_list(YYTHD, $3, NULL, TL_OPTION_UPDATING))
++ if (!Select->add_table_to_list(thd, $3, NULL, TL_OPTION_UPDATING))
+ MYSQL_YYABORT;
+ }
+ ;
+@@ -10739,7 +10701,7 @@
+ opt_duplicate INTO TABLE_SYM table_ident
+ {
+ LEX *lex=Lex;
+- if (!Select->add_table_to_list(YYTHD, $9, NULL, TL_OPTION_UPDATING,
++ if (!Select->add_table_to_list(thd, $9, NULL, TL_OPTION_UPDATING,
+ lex->lock_option))
+ MYSQL_YYABORT;
+ lex->field_list.empty();
+@@ -10754,7 +10716,7 @@
+ | FROM MASTER_SYM
+ {
+ Lex->sql_command = SQLCOM_LOAD_MASTER_DATA;
+- WARN_DEPRECATED(yythd, "6.0", "LOAD DATA FROM MASTER",
++ WARN_DEPRECATED(thd, "6.0", "LOAD DATA FROM MASTER",
+ "mysqldump or future "
+ "BACKUP/RESTORE DATABASE facility");
+ }
+@@ -10872,7 +10834,7 @@
+ simple_ident_nospvar {$$= $1;}
+ | '@' ident_or_text
+ {
+- $$= new (YYTHD->mem_root) Item_user_var_as_out_param($2);
++ $$= new (thd->mem_root) Item_user_var_as_out_param($2);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -10889,7 +10851,6 @@
+ TEXT_STRING
+ {
+ LEX_STRING tmp;
+- THD *thd= YYTHD;
+ CHARSET_INFO *cs_con= thd->variables.collation_connection;
+ CHARSET_INFO *cs_cli= thd->variables.character_set_client;
+ uint repertoire= thd->lex->text_string_is_7bit &&
+@@ -10915,7 +10876,7 @@
+ uint repertoire= Lex->text_string_is_7bit ?
+ MY_REPERTOIRE_ASCII : MY_REPERTOIRE_UNICODE30;
+ DBUG_ASSERT(my_charset_is_ascii_based(national_charset_info));
+- $$= new (YYTHD->mem_root) Item_string($1.str, $1.length,
++ $$= new (thd->mem_root) Item_string($1.str, $1.length,
+ national_charset_info,
+ DERIVATION_COERCIBLE,
+ repertoire);
+@@ -10924,7 +10885,7 @@
+ }
+ | UNDERSCORE_CHARSET TEXT_STRING
+ {
+- Item_string *str= new (YYTHD->mem_root) Item_string($2.str,
++ Item_string *str= new (thd->mem_root) Item_string($2.str,
+ $2.length, $1);
+ if (str == NULL)
+ MYSQL_YYABORT;
+@@ -10943,7 +10904,7 @@
+ If the string has been pure ASCII so far,
+ check the new part.
+ */
+- CHARSET_INFO *cs= YYTHD->variables.collation_connection;
++ CHARSET_INFO *cs= thd->variables.collation_connection;
+ item->collation.repertoire|= my_string_repertoire(cs,
+ $2.str,
+ $2.length);
+@@ -10954,15 +10915,15 @@
+ text_string:
+ TEXT_STRING_literal
+ {
+- $$= new (YYTHD->mem_root) String($1.str,
++ $$= new (thd->mem_root) String($1.str,
+ $1.length,
+- YYTHD->variables.collation_connection);
++ thd->variables.collation_connection);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | HEX_NUM
+ {
+- Item *tmp= new (YYTHD->mem_root) Item_hex_string($1.str, $1.length);
++ Item *tmp= new (thd->mem_root) Item_hex_string($1.str, $1.length);
+ if (tmp == NULL)
+ MYSQL_YYABORT;
+ /*
+@@ -10974,7 +10935,7 @@
+ }
+ | BIN_NUM
+ {
+- Item *tmp= new (YYTHD->mem_root) Item_bin_string($1.str, $1.length);
++ Item *tmp= new (thd->mem_root) Item_bin_string($1.str, $1.length);
+ if (tmp == NULL)
+ MYSQL_YYABORT;
+ /*
+@@ -10989,7 +10950,6 @@
+ param_marker:
+ PARAM_MARKER
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+ Item_param *item;
+@@ -11022,38 +10982,38 @@
+ | NUM_literal { $$ = $1; }
+ | NULL_SYM
+ {
+- $$ = new (YYTHD->mem_root) Item_null();
++ $$ = new (thd->mem_root) Item_null();
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ YYLIP->next_state= MY_LEX_OPERATOR_OR_IDENT;
+ }
+ | FALSE_SYM
+ {
+- $$= new (YYTHD->mem_root) Item_int((char*) "FALSE",0,1);
++ $$= new (thd->mem_root) Item_int((char*) "FALSE",0,1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | TRUE_SYM
+ {
+- $$= new (YYTHD->mem_root) Item_int((char*) "TRUE",1,1);
++ $$= new (thd->mem_root) Item_int((char*) "TRUE",1,1);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | HEX_NUM
+ {
+- $$ = new (YYTHD->mem_root) Item_hex_string($1.str, $1.length);
++ $$ = new (thd->mem_root) Item_hex_string($1.str, $1.length);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | BIN_NUM
+ {
+- $$= new (YYTHD->mem_root) Item_bin_string($1.str, $1.length);
++ $$= new (thd->mem_root) Item_bin_string($1.str, $1.length);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | UNDERSCORE_CHARSET HEX_NUM
+ {
+- Item *tmp= new (YYTHD->mem_root) Item_hex_string($2.str, $2.length);
++ Item *tmp= new (thd->mem_root) Item_hex_string($2.str, $2.length);
+ if (tmp == NULL)
+ MYSQL_YYABORT;
+ /*
+@@ -11064,7 +11024,7 @@
+ String *str= tmp->val_str((String*) 0);
+
+ Item_string *item_str;
+- item_str= new (YYTHD->mem_root)
++ item_str= new (thd->mem_root)
+ Item_string(NULL, /* name will be set in select_item */
+ str ? str->ptr() : "",
+ str ? str->length() : 0,
+@@ -11082,7 +11042,7 @@
+ }
+ | UNDERSCORE_CHARSET BIN_NUM
+ {
+- Item *tmp= new (YYTHD->mem_root) Item_bin_string($2.str, $2.length);
++ Item *tmp= new (thd->mem_root) Item_bin_string($2.str, $2.length);
+ if (tmp == NULL)
+ MYSQL_YYABORT;
+ /*
+@@ -11093,7 +11053,7 @@
+ String *str= tmp->val_str((String*) 0);
+
+ Item_string *item_str;
+- item_str= new (YYTHD->mem_root)
++ item_str= new (thd->mem_root)
+ Item_string(NULL, /* name will be set in select_item */
+ str ? str->ptr() : "",
+ str ? str->length() : 0,
+@@ -11117,7 +11077,7 @@
+ NUM
+ {
+ int error;
+- $$= new (YYTHD->mem_root)
++ $$= new (thd->mem_root)
+ Item_int($1.str,
+ (longlong) my_strtoll10($1.str, NULL, &error),
+ $1.length);
+@@ -11127,7 +11087,7 @@
+ | LONG_NUM
+ {
+ int error;
+- $$= new (YYTHD->mem_root)
++ $$= new (thd->mem_root)
+ Item_int($1.str,
+ (longlong) my_strtoll10($1.str, NULL, &error),
+ $1.length);
+@@ -11136,23 +11096,23 @@
+ }
+ | ULONGLONG_NUM
+ {
+- $$= new (YYTHD->mem_root) Item_uint($1.str, $1.length);
++ $$= new (thd->mem_root) Item_uint($1.str, $1.length);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | DECIMAL_NUM
+ {
+- $$= new (YYTHD->mem_root) Item_decimal($1.str, $1.length,
+- YYTHD->charset());
+- if (($$ == NULL) || (YYTHD->is_error()))
++ $$= new (thd->mem_root) Item_decimal($1.str, $1.length,
++ thd->charset());
++ if (($$ == NULL) || (thd->is_error()))
+ {
+ MYSQL_YYABORT;
+ }
+ }
+ | FLOAT_NUM
+ {
+- $$= new (YYTHD->mem_root) Item_float($1.str, $1.length);
+- if (($$ == NULL) || (YYTHD->is_error()))
++ $$= new (thd->mem_root) Item_float($1.str, $1.length);
++ if (($$ == NULL) || (thd->is_error()))
+ {
+ MYSQL_YYABORT;
+ }
+@@ -11172,7 +11132,7 @@
+ ident '.' '*'
+ {
+ SELECT_LEX *sel= Select;
+- $$= new (YYTHD->mem_root) Item_field(Lex->current_context(),
++ $$= new (thd->mem_root) Item_field(Lex->current_context(),
+ NullS, $1.str, "*");
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+@@ -11180,7 +11140,6 @@
+ }
+ | ident '.' ident '.' '*'
+ {
+- THD *thd= YYTHD;
+ SELECT_LEX *sel= Select;
+ const char* schema= thd->client_capabilities & CLIENT_NO_SCHEMA ?
+ NullS : $1.str;
+@@ -11200,7 +11159,6 @@
+ simple_ident:
+ ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+ sp_variable_t *spv;
+@@ -11251,7 +11209,6 @@
+ simple_ident_nospvar:
+ ident
+ {
+- THD *thd= YYTHD;
+ SELECT_LEX *sel=Select;
+ if ((sel->parsing_place != IN_HAVING) ||
+ (sel->get_in_sum_expr() > 0))
+@@ -11273,7 +11230,6 @@
+ simple_ident_q:
+ ident '.' ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+
+ /*
+@@ -11352,7 +11308,6 @@
+ }
+ | '.' ident '.' ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ SELECT_LEX *sel= lex->current_select;
+ if (sel->no_table_names_allowed)
+@@ -11377,7 +11332,6 @@
+ }
+ | ident '.' ident '.' ident
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ SELECT_LEX *sel= lex->current_select;
+ const char* schema= (thd->client_capabilities & CLIENT_NO_SCHEMA ?
+@@ -11445,7 +11399,7 @@
+ }
+ | ident '.' ident
+ {
+- $$= new Table_ident(YYTHD, $1,$3,0);
++ $$= new Table_ident(thd, $1,$3,0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -11467,7 +11421,7 @@
+ }
+ | ident '.' ident opt_wild
+ {
+- $$= new Table_ident(YYTHD, $1,$3,0);
++ $$= new Table_ident(thd, $1,$3,0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -11477,7 +11431,7 @@
+ ident
+ {
+ LEX_STRING db={(char*) any_db,3};
+- $$= new Table_ident(YYTHD, db,$1,0);
++ $$= new Table_ident(thd, db,$1,0);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -11487,8 +11441,7 @@
+ IDENT { $$= $1; }
+ | IDENT_QUOTED
+ {
+- THD *thd= YYTHD;
+-
++
+ if (thd->charset_is_system_charset)
+ {
+ CHARSET_INFO *cs= system_charset_info;
+@@ -11516,8 +11469,6 @@
+ TEXT_STRING_sys:
+ TEXT_STRING
+ {
+- THD *thd= YYTHD;
+-
+ if (thd->charset_is_system_charset)
+ $$= $1;
+ else
+@@ -11532,8 +11483,6 @@
+ TEXT_STRING_literal:
+ TEXT_STRING
+ {
+- THD *thd= YYTHD;
+-
+ if (thd->charset_is_collation_connection)
+ $$= $1;
+ else
+@@ -11548,8 +11497,6 @@
+ TEXT_STRING_filesystem:
+ TEXT_STRING
+ {
+- THD *thd= YYTHD;
+-
+ if (thd->charset_is_character_set_filesystem)
+ $$= $1;
+ else
+@@ -11566,7 +11513,6 @@
+ IDENT_sys { $$=$1; }
+ | keyword
+ {
+- THD *thd= YYTHD;
+ $$.str= thd->strmake($1.str, $1.length);
+ if ($$.str == NULL)
+ MYSQL_YYABORT;
+@@ -11578,7 +11524,6 @@
+ IDENT_sys { $$=$1; }
+ | keyword_sp
+ {
+- THD *thd= YYTHD;
+ $$.str= thd->strmake($1.str, $1.length);
+ if ($$.str == NULL)
+ MYSQL_YYABORT;
+@@ -11595,7 +11540,6 @@
+ user:
+ ident_or_text
+ {
+- THD *thd= YYTHD;
+ if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
+ MYSQL_YYABORT;
+ $$->user = $1;
+@@ -11609,7 +11553,6 @@
+ }
+ | ident_or_text '@' ident_or_text
+ {
+- THD *thd= YYTHD;
+ if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
+ MYSQL_YYABORT;
+ $$->user = $1; $$->host=$3;
+@@ -11628,7 +11571,7 @@
+ }
+ | CURRENT_USER optional_braces
+ {
+- if (!($$=(LEX_USER*) YYTHD->alloc(sizeof(st_lex_user))))
++ if (!($$=(LEX_USER*) thd->alloc(sizeof(st_lex_user))))
+ MYSQL_YYABORT;
+ /*
+ empty LEX_USER means current_user and
+@@ -11991,7 +11934,6 @@
+
+ option_type_value:
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+
+@@ -12022,7 +11964,6 @@
+ }
+ ext_option_value
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+
+@@ -12105,7 +12046,6 @@
+ sys_option_value:
+ option_type internal_variable_name equal set_expr_or_default
+ {
+- THD *thd= YYTHD;
+ LEX *lex= Lex;
+ LEX_STRING *name= &$2.base_name;
+
+@@ -12117,7 +12057,7 @@
+ my_parse_error(ER(ER_SYNTAX_ERROR));
+ MYSQL_YYABORT;
+ }
+- if (set_trigger_new_row(YYTHD, name, $4))
++ if (set_trigger_new_row(thd, name, $4))
+ MYSQL_YYABORT;
+ }
+ else if ($2.var)
+@@ -12147,7 +12087,6 @@
+ }
+ | option_type TRANSACTION_SYM ISOLATION LEVEL_SYM isolation_types
+ {
+- THD *thd= YYTHD;
+ LEX *lex=Lex;
+ lex->option_type= $1;
+ Item *item= new (thd->mem_root) Item_int((int32) $5);
+@@ -12167,7 +12106,7 @@
+ '@' ident_or_text equal expr
+ {
+ Item_func_set_user_var *item;
+- item= new (YYTHD->mem_root) Item_func_set_user_var($2, $4);
++ item= new (thd->mem_root) Item_func_set_user_var($2, $4);
+ if (item == NULL)
+ MYSQL_YYABORT;
+ set_var_user *var= new set_var_user(item);
+@@ -12177,7 +12116,6 @@
+ }
+ | '@' '@' opt_var_ident_type internal_variable_name equal set_expr_or_default
+ {
+- THD *thd= YYTHD;
+ struct sys_var_with_base tmp= $4;
+ /* Lookup if necessary: must be a system variable. */
+ if (tmp.var == NULL)
+@@ -12190,7 +12128,6 @@
+ }
+ | charset old_or_new_charset_name_or_default
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ CHARSET_INFO *cs2;
+ cs2= $2 ? $2: global_system_variables.character_set_client;
+@@ -12238,7 +12175,6 @@
+ }
+ | PASSWORD equal text_or_password
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ LEX_USER *user;
+ sp_pcontext *spc= lex->spcont;
+@@ -12278,7 +12214,6 @@
+ internal_variable_name:
+ ident
+ {
+- THD *thd= YYTHD;
+ sp_pcontext *spc= thd->lex->spcont;
+ sp_variable_t *spv;
+
+@@ -12337,7 +12272,7 @@
+ }
+ else
+ {
+- sys_var *tmp=find_sys_var(YYTHD, $3.str, $3.length);
++ sys_var *tmp=find_sys_var(thd, $3.str, $3.length);
+ if (!tmp)
+ MYSQL_YYABORT;
+ if (!tmp->is_struct())
+@@ -12348,7 +12283,7 @@
+ }
+ | DEFAULT '.' ident
+ {
+- sys_var *tmp=find_sys_var(YYTHD, $3.str, $3.length);
++ sys_var *tmp=find_sys_var(thd, $3.str, $3.length);
+ if (!tmp)
+ MYSQL_YYABORT;
+ if (!tmp->is_struct())
+@@ -12370,16 +12305,16 @@
+ TEXT_STRING { $$=$1.str;}
+ | PASSWORD '(' TEXT_STRING ')'
+ {
+- $$= $3.length ? YYTHD->variables.old_passwords ?
+- Item_func_old_password::alloc(YYTHD, $3.str, $3.length) :
+- Item_func_password::alloc(YYTHD, $3.str, $3.length) :
++ $$= $3.length ? thd->variables.old_passwords ?
++ Item_func_old_password::alloc(thd, $3.str, $3.length) :
++ Item_func_password::alloc(thd, $3.str, $3.length) :
+ $3.str;
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | OLD_PASSWORD '(' TEXT_STRING ')'
+ {
+- $$= $3.length ? Item_func_old_password::alloc(YYTHD, $3.str,
++ $$= $3.length ? Item_func_old_password::alloc(thd, $3.str,
+ $3.length) :
+ $3.str;
+ if ($$ == NULL)
+@@ -12393,19 +12328,19 @@
+ | DEFAULT { $$=0; }
+ | ON
+ {
+- $$=new (YYTHD->mem_root) Item_string("ON", 2, system_charset_info);
++ $$=new (thd->mem_root) Item_string("ON", 2, system_charset_info);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | ALL
+ {
+- $$=new (YYTHD->mem_root) Item_string("ALL", 3, system_charset_info);
++ $$=new (thd->mem_root) Item_string("ALL", 3, system_charset_info);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+ | BINARY
+ {
+- $$=new (YYTHD->mem_root) Item_string("binary", 6, system_charset_info);
++ $$=new (thd->mem_root) Item_string("binary", 6, system_charset_info);
+ if ($$ == NULL)
+ MYSQL_YYABORT;
+ }
+@@ -12443,7 +12378,7 @@
+ table_ident opt_table_alias lock_option
+ {
+ thr_lock_type lock_type= (thr_lock_type) $3;
+- if (!Select->add_table_to_list(YYTHD, $1, $2, 0, lock_type))
++ if (!Select->add_table_to_list(thd, $1, $2, 0, lock_type))
+ MYSQL_YYABORT;
+ /* If table is to be write locked, protect from a impending GRL. */
+ if (lock_type >= TL_WRITE_ALLOW_WRITE)
+@@ -12514,7 +12449,7 @@
+ lex->expr_allows_subselect= FALSE;
+ lex->sql_command = SQLCOM_HA_READ;
+ lex->ha_rkey_mode= HA_READ_KEY_EXACT; /* Avoid purify warnings */
+- Item *one= new (YYTHD->mem_root) Item_int((int32) 1);
++ Item *one= new (thd->mem_root) Item_int((int32) 1);
+ if (one == NULL)
+ MYSQL_YYABORT;
+ lex->current_select->select_limit= one;
+@@ -12836,10 +12771,10 @@
+ $$=$1; $1->password=$4;
+ if ($4.length)
+ {
+- if (YYTHD->variables.old_passwords)
++ if (thd->variables.old_passwords)
+ {
+ char *buff=
+- (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
++ (char *) thd->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH_323+1);
+ if (buff == NULL)
+ MYSQL_YYABORT;
+ my_make_scrambled_password_323(buff, $4.str, $4.length);
+@@ -12849,7 +12784,7 @@
+ else
+ {
+ char *buff=
+- (char *) YYTHD->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
++ (char *) thd->alloc(SCRAMBLED_PASSWORD_CHAR_LENGTH+1);
+ if (buff == NULL)
+ MYSQL_YYABORT;
+ my_make_scrambled_password(buff, $4.str, $4.length);
+@@ -12881,7 +12816,7 @@
+ column_list_id:
+ ident
+ {
+- String *new_str = new (YYTHD->mem_root) String((const char*) $1.str,$1.length,system_charset_info);
++ String *new_str = new (thd->mem_root) String((const char*) $1.str,$1.length,system_charset_info);
+ if (new_str == NULL)
+ MYSQL_YYABORT;
+ List_iterator <LEX_COLUMN> iter(Lex->columns);
+@@ -12981,14 +12916,14 @@
+
+ opt_chain:
+ /* empty */
+- { $$= (YYTHD->variables.completion_type == 1); }
++ { $$= (thd->variables.completion_type == 1); }
+ | AND_SYM NO_SYM CHAIN_SYM { $$=0; }
+ | AND_SYM CHAIN_SYM { $$=1; }
+ ;
+
+ opt_release:
+ /* empty */
+- { $$= (YYTHD->variables.completion_type == 2); }
++ { $$= (thd->variables.completion_type == 2); }
+ | RELEASE_SYM { $$=1; }
+ | NO_SYM RELEASE_SYM { $$=0; }
+ ;
+@@ -13102,7 +13037,6 @@
+
+ union_order_or_limit:
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ DBUG_ASSERT(lex->current_select->linkage != GLOBAL_OPTIONS_TYPE);
+ SELECT_LEX *sel= lex->current_select;
+@@ -13118,7 +13052,6 @@
+ }
+ order_or_limit
+ {
+- THD *thd= YYTHD;
+ thd->lex->current_select->no_table_names_allowed= 0;
+ thd->where= "";
+ }
+@@ -13255,14 +13188,14 @@
+ from older master servers (i.e. to create non-suid trigger in this
+ case).
+ */
+- YYTHD->lex->definer= 0;
++ thd->lex->definer= 0;
+ }
+ ;
+
+ definer:
+ DEFINER_SYM EQ user
+ {
+- YYTHD->lex->definer= get_current_user(YYTHD, $3);
++ thd->lex->definer= get_current_user(thd, $3);
+ }
+ ;
+
+@@ -13307,7 +13240,6 @@
+ 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 */
+@@ -13347,7 +13279,6 @@
+ }
+ view_select_aux view_check_option
+ {
+- THD *thd= YYTHD;
+ LEX *lex= Lex;
+ uint len= YYLIP->get_cpp_ptr() - lex->create_view_select.str;
+ void *create_view_select= thd->memdup(lex->create_view_select.str, len);
+@@ -13403,7 +13334,6 @@
+ EACH_SYM
+ ROW_SYM
+ { /* $15 */
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+ sp_head *sp;
+@@ -13437,8 +13367,8 @@
+ sp_head *sp= lex->sphead;
+
+ lex->sql_command= SQLCOM_CREATE_TRIGGER;
+- sp->set_stmt_end(YYTHD);
+- sp->restore_thd_mem_root(YYTHD);
++ sp->set_stmt_end(thd);
++ sp->restore_thd_mem_root(thd);
+
+ if (sp->is_not_allowed_in_function("trigger"))
+ MYSQL_YYABORT;
+@@ -13448,7 +13378,7 @@
+ sp_proc_stmt alternatives are not saving/restoring LEX, so
+ lex->query_tables can be wiped out.
+ */
+- if (!lex->select_lex.add_table_to_list(YYTHD, $9,
++ if (!lex->select_lex.add_table_to_list(thd, $9,
+ (LEX_STRING*) 0,
+ TL_OPTION_UPDATING,
+ TL_IGNORE))
+@@ -13466,7 +13396,6 @@
+ AGGREGATE_SYM remember_name FUNCTION_SYM ident
+ RETURNS_SYM udf_type SONAME_SYM TEXT_STRING_sys
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ if (is_native_function(thd, & $4))
+ {
+@@ -13484,7 +13413,6 @@
+ | remember_name FUNCTION_SYM ident
+ RETURNS_SYM udf_type SONAME_SYM TEXT_STRING_sys
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ if (is_native_function(thd, & $3))
+ {
+@@ -13507,7 +13435,6 @@
+ sp_name /* $3 */
+ '(' /* $4 */
+ { /* $5 */
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+ sp_head *sp;
+@@ -13565,7 +13492,7 @@
+ MYSQL_YYABORT;
+ }
+
+- if (sp->fill_field_definition(YYTHD, lex,
++ if (sp->fill_field_definition(thd, lex,
+ (enum enum_field_types) $11,
+ &sp->m_return_field_def))
+ MYSQL_YYABORT;
+@@ -13574,7 +13501,6 @@
+ }
+ sp_c_chistics /* $13 */
+ { /* $14 */
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ Lex_input_stream *lip= YYLIP;
+
+@@ -13583,7 +13509,6 @@
+ }
+ sp_proc_stmt /* $15 */
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+ sp_head *sp= lex->sphead;
+
+@@ -13654,10 +13579,10 @@
+ sp= new sp_head();
+ if (sp == NULL)
+ MYSQL_YYABORT;
+- sp->reset_thd_mem_root(YYTHD);
++ sp->reset_thd_mem_root(thd);
+ sp->init(lex);
+ sp->m_type= TYPE_ENUM_PROCEDURE;
+- sp->init_sp_name(YYTHD, $3);
++ sp->init_sp_name(thd, $3);
+
+ lex->sphead= sp;
+ }
+@@ -13672,7 +13597,6 @@
+ sp_pdparam_list
+ ')'
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+
+ lex->sphead->m_param_end= YYLIP->get_cpp_tok_start();
+@@ -13680,7 +13604,6 @@
+ }
+ sp_c_chistics
+ {
+- THD *thd= YYTHD;
+ LEX *lex= thd->lex;
+
+ lex->sphead->m_chistics= &lex->sp_chistics;
+@@ -13691,9 +13614,9 @@
+ LEX *lex= Lex;
+ sp_head *sp= lex->sphead;
+
+- sp->set_stmt_end(YYTHD);
++ sp->set_stmt_end(thd);
+ lex->sql_command= SQLCOM_CREATE_PROCEDURE;
+- sp->restore_thd_mem_root(YYTHD);
++ sp->restore_thd_mem_root(thd);
+ }
+ ;
+
+@@ -13730,21 +13653,21 @@
+ text_string
+ {
+ MYSQL_YYABORT_UNLESS($1->length() <= MAXGTRIDSIZE);
+- if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
++ if (!(Lex->xid=(XID *)thd->alloc(sizeof(XID))))
+ MYSQL_YYABORT;
+ Lex->xid->set(1L, $1->ptr(), $1->length(), 0, 0);
+ }
+ | text_string ',' text_string
+ {
+ MYSQL_YYABORT_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
+- if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
++ if (!(Lex->xid=(XID *)thd->alloc(sizeof(XID))))
+ MYSQL_YYABORT;
+ Lex->xid->set(1L, $1->ptr(), $1->length(), $3->ptr(), $3->length());
+ }
+ | text_string ',' text_string ',' ulong_num
+ {
+ MYSQL_YYABORT_UNLESS($1->length() <= MAXGTRIDSIZE && $3->length() <= MAXBQUALSIZE);
+- if (!(Lex->xid=(XID *)YYTHD->alloc(sizeof(XID))))
++ if (!(Lex->xid=(XID *)thd->alloc(sizeof(XID))))
+ MYSQL_YYABORT;
+ Lex->xid->set($5, $1->ptr(), $1->length(), $3->ptr(), $3->length());
+ }
projects / buildroot.git / commitdiff