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fixed bugs in temporary tables in subselect implementation (SCRUM)

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merging with switching on static tables optimization (SCRUM)
fixed subselects with uncacheable results
added test for fixed bugs from bugreports


mysql-test/r/subselect.result:
  changes in subselect test after switching on static tables optimization
  fixed bug test added
  uncacheable subselects
mysql-test/t/subselect.test:
  changes in subselect test after switching on static tables optimization
  fixed bug test added
  uncacheable subselects
sql/item_create.cc:
  fixed subselects with uncacheable results
sql/item_func.cc:
  fixed subselects with uncacheable results
sql/item_subselect.cc:
  fixed subselects with uncacheable results
  clean up
sql/item_subselect.h:
  fixed subselects with uncacheable results
sql/sql_lex.cc:
  fixed subselects with uncacheable results
sql/sql_lex.h:
  fixed subselects with uncacheable results
sql/sql_select.cc:
  fixed bugs in temporary tables in subselect implementation
  fixed subselects with uncacheable results
sql/sql_union.cc:
  fixed subselects with uncacheable results
sql/sql_yacc.yy:
  fixed subselects with uncacheable results
This commit is contained in:
unknown
2003-01-28 14:48:12 +02:00
parent 42ba47184c
commit ca0d06d599
11 changed files with 257 additions and 63 deletions
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143
mysql-test/r/subselect.result
View File

@ -278,7 +278,7 @@ NULL 1
explain select (select a from t1 where t1.a=t2.a union select a from t5 where t5.a=t2.a), a from t2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2
2 DEPENDENT SUBSELECT t1 system NULL NULL NULL NULL 1 Using where
2 DEPENDENT SUBSELECT t1 system NULL NULL NULL NULL 1
3 DEPENDENT UNION t5 ALL NULL NULL NULL NULL 2 Using where
select (select a from t1 where t1.a=t2.a union all select a from t5 where t5.a=t2.a), a from t2;
Subselect returns more than 1 record
@ -321,9 +321,9 @@ INSERT INTO t8 (pseudo,email) VALUES ('2joce1','2test1');
EXPLAIN SELECT pseudo,(SELECT email FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce')) FROM t8 WHERE pseudo=(SELECT pseudo FROM t8 WHERE pseudo='joce');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t8 const PRIMARY PRIMARY 35 const 1
4 SUBSELECT t8 const PRIMARY PRIMARY 35 const 1
4 SUBSELECT t8 const PRIMARY PRIMARY 35 1
2 SUBSELECT t8 const PRIMARY PRIMARY 35 const 1
3 SUBSELECT t8 const PRIMARY PRIMARY 35 const 1
3 SUBSELECT t8 const PRIMARY PRIMARY 35 1
SELECT pseudo FROM t8 WHERE pseudo=(SELECT pseudo,email FROM
t8 WHERE pseudo='joce');
Cardinality error (more/less than 1 columns)
@ -397,33 +397,51 @@ SELECT (SELECT 1) as a FROM (SELECT 1 FROM t1 HAVING a=1) b;
Unknown column 'a' in 'having clause'
SELECT 1 IN (SELECT 1 FROM t2 HAVING a);
Unknown column 'a' in 'having clause'
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY date);
mot topic date pseudo
joce 40143 2002-10-22 joce
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
mot topic date pseudo
SELECT * from t2 where topic IN (SELECT SUM(topic) FROM t1);
mot topic date pseudo
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY date);
mot topic date pseudo
joce 40143 2002-10-22 joce
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
mot topic date pseudo
SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1);
mot topic date pseudo
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY date);
mot topic date pseudo
joce 40143 2002-10-22 joce
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic);
mot topic date pseudo
joce 40143 2002-10-22 joce
joce 43506 2002-10-22 joce
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100);
mot topic date pseudo
SELECT * from t2 where topic IN (SELECT SUM(topic) FROM t1);
mot topic date pseudo
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic);
mot topic date pseudo
joce 40143 2002-10-22 joce
joce 43506 2002-10-22 joce
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100);
mot topic date pseudo
SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1);
mot topic date pseudo
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic);
mot topic date pseudo
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100);
mot topic date pseudo
joce 40143 2002-10-22 joce
joce 43506 2002-10-22 joce
SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2;
mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100)
joce 40143 2002-10-22 joce 1
joce 43506 2002-10-22 joce 1
SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2);
mot topic date pseudo
SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2);
mot topic date pseudo
joce 40143 2002-10-22 joce
joce 43506 2002-10-22 joce
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);
mot topic date pseudo
joce 40143 2002-10-22 joce
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);
mot topic date pseudo
joce 40143 2002-10-22 joce
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);
mot topic date pseudo
joce 40143 2002-10-22 joce
SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) from t2;
mot topic date pseudo topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000)
joce 40143 2002-10-22 joce 1
joce 43506 2002-10-22 joce 0
drop table t1,t2;
CREATE TABLE `t1` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
@ -850,3 +868,86 @@ do (SELECT a from t1);
Table 'test.t1' doesn't exist
set @a:=(SELECT a from t1);
Table 'test.t1' doesn't exist
CREATE TABLE t1 (a int, KEY(a));
HANDLER t1 OPEN;
HANDLER t1 READ a=((SELECT 1));
You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use
HANDLER t1 CLOSE;
drop table t1;
create table t1 (a int);
create table t2 (b int);
insert into t1 values (1),(2);
insert into t2 values (1);
select a from t1 where a in (select a from t1 where a in (select b from t2));
a
1
drop table t1, t2;
create table t1 (a int, b int);
create table t2 like t1;
insert into t1 values (1,2),(1,3),(1,4),(1,5);
insert into t2 values (1,2),(1,3);
select * from t1 where row(a,b) in (select a,b from t2);
a b
1 2
1 3
drop table t1, t2;
CREATE TABLE `t1` (`i` int(11) NOT NULL default '0',PRIMARY KEY (`i`)) TYPE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES (1);
UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i));
Invalid use of group function
drop table t1;
CREATE TABLE t (a int(1));
EXPLAIN SELECT (SELECT RAND() FROM t) FROM t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBSELECT t system NULL NULL NULL NULL 0 const row not found
EXPLAIN SELECT (SELECT ENCRYPT('test') FROM t) FROM t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBSELECT t system NULL NULL NULL NULL 0 const row not found
EXPLAIN SELECT (SELECT BENCHMARK(1,1) FROM t) FROM t;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t system NULL NULL NULL NULL 0 const row not found
2 UNCACHEABLE SUBSELECT t system NULL NULL NULL NULL 0 const row not found
drop table t;
CREATE TABLE `t1` (
`mot` varchar(30) character set latin1 NOT NULL default '',
`topic` mediumint(8) unsigned NOT NULL default '0',
`date` date NOT NULL default '0000-00-00',
`pseudo` varchar(35) character set latin1 NOT NULL default '',
PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`),
KEY `pseudo` (`pseudo`,`date`,`topic`),
KEY `topic` (`topic`)
) TYPE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;
CREATE TABLE `t2` (
`mot` varchar(30) character set latin1 NOT NULL default '',
`topic` mediumint(8) unsigned NOT NULL default '0',
`date` date NOT NULL default '0000-00-00',
`pseudo` varchar(35) character set latin1 NOT NULL default '',
PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`),
KEY `pseudo` (`pseudo`,`date`,`topic`),
KEY `topic` (`topic`)
) TYPE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;
CREATE TABLE `t3` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
`maxnumrep` int(10) unsigned NOT NULL default '0',
PRIMARY KEY (`numeropost`),
UNIQUE KEY `maxnumrep` (`maxnumrep`)
) TYPE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES ('joce','1','','joce'),('test','2','','test');
INSERT INTO t2 VALUES ('joce','1','','joce'),('test','2','','test');
INSERT INTO t3 VALUES (1,1);
SELECT DISTINCT topic FROM t2 WHERE NOT EXISTS(SELECT * FROM t3 WHERE
numeropost=topic);
topic
2
select * from t1;
mot topic date pseudo
joce 1 0000-00-00 joce
test 2 0000-00-00 test
DELETE FROM t1 WHERE topic IN (SELECT DISTINCT topic FROM t2 WHERE NOT
EXISTS(SELECT * FROM t3 WHERE numeropost=topic));
select * from t1;
mot topic date pseudo
joce 1 0000-00-00 joce
drop table t1, t2, t3;

84
mysql-test/t/subselect.test
View File

@ -215,13 +215,13 @@ SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING t
SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1);
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic);
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100);
SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100;
SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2;
SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2);
SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2);
delete from t2 where topic=40143;
SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100) from t2;
SELECT *, topic as fff, exists (SELECT topic FROM t2 GROUP BY topic HAVING topic < 4100 and fff = topic) from t2;
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000);
SELECT *, topic = all (SELECT topic FROM t2 GROUP BY topic HAVING topic < 41000) from t2;
drop table t1,t2;
#forumconthardwarefr7
@ -483,3 +483,79 @@ drop table t1;
do (SELECT a from t1);
-- error 1146
set @a:=(SELECT a from t1);
CREATE TABLE t1 (a int, KEY(a));
HANDLER t1 OPEN;
-- error 1149
HANDLER t1 READ a=((SELECT 1));
HANDLER t1 CLOSE;
drop table t1;
create table t1 (a int);
create table t2 (b int);
insert into t1 values (1),(2);
insert into t2 values (1);
select a from t1 where a in (select a from t1 where a in (select b from t2));
drop table t1, t2;
create table t1 (a int, b int);
create table t2 like t1;
insert into t1 values (1,2),(1,3),(1,4),(1,5);
insert into t2 values (1,2),(1,3);
select * from t1 where row(a,b) in (select a,b from t2);
drop table t1, t2;
CREATE TABLE `t1` (`i` int(11) NOT NULL default '0',PRIMARY KEY (`i`)) TYPE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES (1);
-- error 1111
UPDATE t1 SET i=i+1 WHERE i=(SELECT MAX(i));
drop table t1;
#test of uncacheable subqueries
CREATE TABLE t (a int(1));
EXPLAIN SELECT (SELECT RAND() FROM t) FROM t;
EXPLAIN SELECT (SELECT ENCRYPT('test') FROM t) FROM t;
EXPLAIN SELECT (SELECT BENCHMARK(1,1) FROM t) FROM t;
drop table t;
CREATE TABLE `t1` (
`mot` varchar(30) character set latin1 NOT NULL default '',
`topic` mediumint(8) unsigned NOT NULL default '0',
`date` date NOT NULL default '0000-00-00',
`pseudo` varchar(35) character set latin1 NOT NULL default '',
PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`),
KEY `pseudo` (`pseudo`,`date`,`topic`),
KEY `topic` (`topic`)
) TYPE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;
CREATE TABLE `t2` (
`mot` varchar(30) character set latin1 NOT NULL default '',
`topic` mediumint(8) unsigned NOT NULL default '0',
`date` date NOT NULL default '0000-00-00',
`pseudo` varchar(35) character set latin1 NOT NULL default '',
PRIMARY KEY (`mot`,`pseudo`,`date`,`topic`),
KEY `pseudo` (`pseudo`,`date`,`topic`),
KEY `topic` (`topic`)
) TYPE=MyISAM CHARSET=latin1 ROW_FORMAT=DYNAMIC;
CREATE TABLE `t3` (
`numeropost` mediumint(8) unsigned NOT NULL auto_increment,
`maxnumrep` int(10) unsigned NOT NULL default '0',
PRIMARY KEY (`numeropost`),
UNIQUE KEY `maxnumrep` (`maxnumrep`)
) TYPE=MyISAM CHARSET=latin1;
INSERT INTO t1 VALUES ('joce','1','','joce'),('test','2','','test');
INSERT INTO t2 VALUES ('joce','1','','joce'),('test','2','','test');
INSERT INTO t3 VALUES (1,1);
SELECT DISTINCT topic FROM t2 WHERE NOT EXISTS(SELECT * FROM t3 WHERE
numeropost=topic);
select * from t1;
DELETE FROM t1 WHERE topic IN (SELECT DISTINCT topic FROM t2 WHERE NOT
EXISTS(SELECT * FROM t3 WHERE numeropost=topic));
select * from t1;
drop table t1, t2, t3;

10
sql/item_create.cc
View File

@ -167,7 +167,7 @@ Item *create_func_from_days(Item* a)
Item *create_func_get_lock(Item* a, Item *b)
{
current_thd->lex.safe_to_cache_query=0;
current_thd->lex.uncacheable();
return new Item_func_get_lock(a, b);
}
@ -327,7 +327,7 @@ Item *create_func_radians(Item *a)
Item *create_func_release_lock(Item* a)
{
current_thd->lex.safe_to_cache_query=0;
current_thd->lex.uncacheable();
return new Item_func_release_lock(a);
}
@ -435,13 +435,13 @@ Item *create_func_year(Item* a)
Item *create_load_file(Item* a)
{
current_thd->lex.safe_to_cache_query=0;
current_thd->lex.uncacheable();
return new Item_load_file(a);
}
Item *create_wait_for_master_pos(Item* a, Item* b)
{
current_thd->lex.safe_to_cache_query=0;
current_thd->lex.uncacheable();
return new Item_master_pos_wait(a, b);
}
@ -463,7 +463,7 @@ Item *create_func_cast(Item *a, Item_cast cast_type)
Item *create_func_is_free_lock(Item* a)
{
current_thd->lex.safe_to_cache_query=0;
current_thd->lex.uncacheable();
return new Item_func_is_free_lock(a);
}

4
sql/item_func.cc
View File

@ -2544,7 +2544,7 @@ Item *get_system_var(enum_var_type var_type, LEX_STRING name)
}
if (!(item=var->item(thd, var_type)))
return 0; // Impossible
thd->lex.safe_to_cache_query=0;
thd->lex.uncacheable();
buff[0]='@';
buff[1]='@';
pos=buff+2;
@ -2570,7 +2570,7 @@ Item *get_system_var(enum_var_type var_type, const char *var_name, uint length,
DBUG_ASSERT(var != 0);
if (!(item=var->item(thd, var_type)))
return 0; // Impossible
thd->lex.safe_to_cache_query=0;
thd->lex.uncacheable();
item->set_name(item_name); // Will use original name
return item;
}

23
sql/item_subselect.cc
View File

@ -129,7 +129,8 @@ void Item_subselect::fix_length_and_dec()
inline table_map Item_subselect::used_tables() const
{
return (table_map) engine->depended() ? 1L : 0L;
return (table_map) (engine->dependent() ? 1L :
(engine->uncacheable() ? RAND_TABLE_BIT : 0L));
}
Item_singlerow_subselect::Item_singlerow_subselect(THD *thd,
@ -795,7 +796,7 @@ int subselect_single_select_engine::exec()
DBUG_RETURN(join->error?join->error:1);
}
}
if (select_lex->dependent && executed)
if ((select_lex->dependent || select_lex->uncacheable) && executed)
{
if (join->reinit())
{
@ -837,16 +838,26 @@ uint subselect_union_engine::cols()
return unit->first_select()->item_list.elements;
}
bool subselect_single_select_engine::depended()
bool subselect_single_select_engine::dependent()
{
return select_lex->dependent;
}
bool subselect_union_engine::depended()
bool subselect_union_engine::dependent()
{
return unit->dependent;
}
bool subselect_single_select_engine::uncacheable()
{
return select_lex->uncacheable;
}
bool subselect_union_engine::uncacheable()
{
return unit->uncacheable;
}
bool subselect_single_select_engine::check_loop(uint id)
{
DBUG_ENTER("subselect_single_select_engine::check_loop");
@ -865,13 +876,9 @@ bool subselect_union_engine::check_loop(uint id)
void subselect_single_select_engine::exclude()
{
select_lex->master_unit()->exclude_level();
//if (current_thd->lex->describe)
}
void subselect_union_engine::exclude()
{
unit->exclude_level();
// for (SELECT_LEX *sl= unit->first_select(); sl; sl= sl->next_select())
// if (sl->join && sl->join->check_loop(id))
// DBUG_RETURN(1);
}

9
sql/item_subselect.h
View File

@ -223,7 +223,8 @@ public:
virtual void fix_length_and_dec(Item_cache** row)= 0;
virtual int exec()= 0;
virtual uint cols()= 0; /* return number of columnss in select */
virtual bool depended()= 0; /* depended from outer select */
virtual bool dependent()= 0; /* depended from outer select */
virtual bool uncacheable()= 0; /* query is uncacheable */
enum Item_result type() { return res_type; }
virtual bool check_loop(uint id)= 0;
virtual void exclude()= 0;
@ -245,7 +246,8 @@ public:
void fix_length_and_dec(Item_cache** row);
int exec();
uint cols();
bool depended();
bool dependent();
bool uncacheable();
bool check_loop(uint id);
void exclude();
};
@ -262,7 +264,8 @@ public:
void fix_length_and_dec(Item_cache** row);
int exec();
uint cols();
bool depended();
bool dependent();
bool uncacheable();
bool check_loop(uint id);
void exclude();
};

2
sql/sql_lex.cc
View File

@ -995,7 +995,7 @@ int yylex(void *arg, void *yythd)
void st_select_lex_node::init_query()
{
no_table_names_allowed= dependent= 0;
no_table_names_allowed= uncacheable= dependent= 0;
ref_pointer_array= 0;
}

8
sql/sql_lex.h
View File

@ -216,6 +216,7 @@ public:
uint with_sum_func; /* sum function indicator and number of it */
bool create_refs;
bool dependent; /* dependent from outer select subselect */
bool uncacheable; /* result of this query can't be cached */
bool no_table_names_allowed; /* used for global order by */
static void *operator new(size_t size)
@ -475,6 +476,13 @@ typedef struct st_lex
CHARSET_INFO *charset;
char *help_arg;
bool tmp_table_used;
inline void uncacheable()
{
safe_to_cache_query= 0;
current_select->uncacheable =
current_select->master_unit()->uncacheable= 1;
}
} LEX;

10
sql/sql_select.cc
View File

@ -839,7 +839,6 @@ JOIN::reinit()
exec_tmp_table1->file->extra(HA_EXTRA_RESET_STATE);
exec_tmp_table1->file->delete_all_rows();
free_io_cache(exec_tmp_table1);
memcpy(ref_pointer_array, items0, ref_pointer_array_size);
}
if (exec_tmp_table2)
{
@ -850,9 +849,6 @@ JOIN::reinit()
if (items0)
memcpy(ref_pointer_array, items0, ref_pointer_array_size);
tmp_table_param.copy_funcs.empty();
tmp_table_param.copy_field= tmp_table_param.copy_field_end= 0;
if (tmp_join)
restore_tmp();
@ -4824,7 +4820,7 @@ bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
static int
do_select(JOIN *join,List<Item> *fields,TABLE *table,Procedure *procedure)
{
int error;
int error= 0;
JOIN_TAB *join_tab;
int (*end_select)(JOIN *, struct st_join_table *,bool);
DBUG_ENTER("do_select");
@ -8032,8 +8028,10 @@ int mysql_explain_union(THD *thd, SELECT_LEX_UNIT *unit, select_result *result)
((sl->linkage == DERIVED_TABLE_TYPE) ?
"DERIVED":
((sl->dependent)?"DEPENDENT SUBSELECT":
"SUBSELECT")):
(sl->uncacheable?"UNCACHEABLE SUBSELECT":
"SUBSELECT"))):
((sl->dependent)?"DEPENDENT UNION":
sl->uncacheable?"UNCACHEABLE UNION":
"UNION"))),
result);
if (res)

4
sql/sql_union.cc
View File

@ -207,11 +207,11 @@ int st_select_lex_unit::exec()
DBUG_ENTER("st_select_lex_unit::exec");
SELECT_LEX_NODE *lex_select_save= thd->lex.current_select;
if (executed && !dependent)
if (executed && !(dependent||uncacheable))
DBUG_RETURN(0);
executed= 1;
if (dependent || !item || !item->assigned())
if ((dependent||uncacheable) || !item || !item->assigned())
{
if (optimized && item && item->assigned())
{

19
sql/sql_yacc.yy
View File

@ -1798,7 +1798,7 @@ select_option:
YYABORT;
Select->options|= OPTION_FOUND_ROWS;
}
| SQL_NO_CACHE_SYM { Lex->safe_to_cache_query=0; }
| SQL_NO_CACHE_SYM { Lex->uncacheable();; }
| SQL_CACHE_SYM { Select->options|= OPTION_TO_QUERY_CACHE; }
| ALL {}
;
@ -2045,12 +2045,12 @@ simple_expr:
| '@' ident_or_text SET_VAR expr
{
$$= new Item_func_set_user_var($2,$4);
Lex->safe_to_cache_query=0;
Lex->uncacheable();;
}
| '@' ident_or_text
{
$$= new Item_func_get_user_var($2);
Lex->safe_to_cache_query=0;
Lex->uncacheable();;
}
| '@' '@' opt_var_ident_type ident_or_text
{
@ -2136,7 +2136,7 @@ simple_expr:
| ENCRYPT '(' expr ')'
{
$$= new Item_func_encrypt($3);
Lex->safe_to_cache_query=0;
Lex->uncacheable();;
}
| ENCRYPT '(' expr ',' expr ')' { $$= new Item_func_encrypt($3,$5); }
| DECODE_SYM '(' expr ',' TEXT_STRING ')'
@ -2192,6 +2192,7 @@ simple_expr:
{
$$= get_system_var(OPT_SESSION, "last_insert_id", 14,
"last_insert_id()");
Lex->safe_to_cache_query= 0;
}
| LAST_INSERT_ID '(' expr ')'
{
@ -2272,9 +2273,9 @@ simple_expr:
| POSITION_SYM '(' no_in_expr IN_SYM expr ')'
{ $$ = new Item_func_locate($5,$3); }
| RAND '(' expr ')'
{ $$= new Item_func_rand($3); Lex->safe_to_cache_query=0;}
{ $$= new Item_func_rand($3); Lex->uncacheable();}
| RAND '(' ')'
{ $$= new Item_func_rand(); Lex->safe_to_cache_query=0;}
{ $$= new Item_func_rand(); Lex->uncacheable();}
| REPLACE '(' expr ',' expr ',' expr ')'
{ $$= new Item_func_replace($3,$5,$7); }
| RIGHT '(' expr ',' expr ')'
@ -2376,7 +2377,7 @@ simple_expr:
| BENCHMARK_SYM '(' ULONG_NUM ',' expr ')'
{
$$=new Item_func_benchmark($3,$5);
Lex->safe_to_cache_query=0;
Lex->uncacheable();
}
| EXTRACT_SYM '(' interval FROM expr ')'
{ $$=new Item_extract( $3, $5); };
@ -2874,7 +2875,7 @@ procedure_clause:
lex->proc_list.next= (byte**) &lex->proc_list.first;
if (add_proc_to_list(lex->thd, new Item_field(NULL,NULL,$2.str)))
YYABORT;
Lex->safe_to_cache_query=0;
Lex->uncacheable();
}
'(' procedure_list ')';
@ -2948,7 +2949,7 @@ into:
}
| INTO select_var_list_init
{
Lex->safe_to_cache_query=0;
Lex->uncacheable();
}
;