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fixed unlocking tables during subquery execution (BUG#2048)

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This commit is contained in:
bell@sanja.is.com.ua
2003-12-10 22:46:14 +02:00
parent 4734f45213
commit e756a511f8
6 changed files with 52 additions and 8 deletions
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20
mysql-test/r/subselect_innodb.result
View File

@ -63,3 +63,23 @@ processor_id (SELECT y.yod_id FROM t1 p2, t2 y WHERE p2.processor_id = p1.proces
2 1
3 1
drop table t1,t2,t3;
CREATE TABLE t1 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i1 (b)
) TYPE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
CREATE TABLE t2 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i (b)
) TYPE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t2 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
select (select max(id) from t2 where b=1 group by b) as x,b from t1 where b=1;
x b
2 1
drop table t1,t2;

22
mysql-test/t/subselect_innodb.test
View File

@ -68,3 +68,25 @@ INSERT INTO t3 VALUES (1,1),(2,2),(3,3);
INSERT INTO t2 VALUES (1,1),(2,2),(3,3);
SELECT distinct p1.processor_id, (SELECT y.yod_id FROM t1 p2, t2 y WHERE p2.processor_id = p1.processor_id and p2.processor_id = y.processor_id) FROM t1 p1;
drop table t1,t2,t3;
#
# innodb locking
#
CREATE TABLE t1 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i1 (b)
) TYPE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
CREATE TABLE t2 (
id int(11) NOT NULL default '0',
b int(11) default NULL,
c char(3) default NULL,
PRIMARY KEY (id),
KEY t2i (b)
) TYPE=innodb DEFAULT CHARSET=latin1;
INSERT INTO t2 VALUES (0,0,'GPL'),(1,0,'GPL'),(2,1,'GPL'),(3,2,'GPL');
select (select max(id) from t2 where b=1 group by b) as x,b from t1 where b=1;
drop table t1,t2;

5
sql/item_subselect.cc
View File

@ -906,7 +906,8 @@ int subselect_single_select_engine::prepare()
{
if (prepared)
return 0;
join= new JOIN(thd, select_lex->item_list, select_lex->options, result);
join= new JOIN(thd, select_lex->item_list,
select_lex->options | SELECT_NO_UNLOCK, result);
if (!join || !result)
{
thd->fatal_error(); //out of memory
@ -933,7 +934,7 @@ int subselect_single_select_engine::prepare()
int subselect_union_engine::prepare()
{
return unit->prepare(thd, result);
return unit->prepare(thd, result, SELECT_NO_UNLOCK);
}
int subselect_uniquesubquery_engine::prepare()

2
sql/sql_derived.cc
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@ -114,7 +114,7 @@ int mysql_derived(THD *thd, LEX *lex, SELECT_LEX_UNIT *unit,
DBUG_RETURN(1); // out of memory
// st_select_lex_unit::prepare correctly work for single select
if ((res= unit->prepare(thd, derived_result)))
if ((res= unit->prepare(thd, derived_result, 0)))
goto exit;
/*

2
sql/sql_lex.h
View File

@ -351,7 +351,7 @@ public:
void exclude_tree();
/* UNION methods */
int prepare(THD *thd, select_result *result);
int prepare(THD *thd, select_result *result, ulong additional_options);
int exec();
int cleanup();

7
sql/sql_union.cc
View File

@ -29,7 +29,7 @@ int mysql_union(THD *thd, LEX *lex, select_result *result,
{
DBUG_ENTER("mysql_union");
int res= 0;
if (!(res= unit->prepare(thd, result)))
if (!(res= unit->prepare(thd, result, SELECT_NO_UNLOCK)))
res= unit->exec();
res|= unit->cleanup();
DBUG_RETURN(res);
@ -106,7 +106,8 @@ bool select_union::flush()
}
int st_select_lex_unit::prepare(THD *thd_arg, select_result *sel_result)
int st_select_lex_unit::prepare(THD *thd_arg, select_result *sel_result,
ulong additional_options)
{
SELECT_LEX *lex_select_save= thd_arg->lex.current_select;
SELECT_LEX *sl, *first_select;
@ -146,7 +147,7 @@ int st_select_lex_unit::prepare(THD *thd_arg, select_result *sel_result)
for (;sl; sl= sl->next_select())
{
JOIN *join= new JOIN(thd_arg, sl->item_list,
sl->options | thd_arg->options | SELECT_NO_UNLOCK,
sl->options | thd_arg->options | additional_options,
tmp_result);
thd_arg->lex.current_select= sl;
offset_limit_cnt= sl->offset_limit;