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5.1-bugteam->trunk-merge merge

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This commit is contained in:
Sergey Glukhov 2010-06-08 10:47:23 +04:00
commit 482a40e149
3 changed files with 31 additions and 2 deletions
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14
mysql-test/r/func_isnull.result
View File

@ -5,6 +5,20 @@ flush tables;
select * from t1 where isnull(to_days(mydate)); select * from t1 where isnull(to_days(mydate));
id mydate id mydate
drop table t1; drop table t1;
#
# Bug#53933 crash when using uncacheable subquery in the having clause of outer query
#
CREATE TABLE t1 (f1 INT);
INSERT INTO t1 VALUES (0),(0);
SELECT ISNULL((SELECT GET_LOCK('Bug#53933', 0) FROM t1 GROUP BY f1)) AS f2
FROM t1 GROUP BY f1 HAVING f2 = f2;
f2
0
SELECT RELEASE_LOCK('Bug#53933');
RELEASE_LOCK('Bug#53933')
1
DROP TABLE t1;
End of 5.0 tests
CREATE TABLE t1 (id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, PRIMARY KEY(id)); CREATE TABLE t1 (id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, PRIMARY KEY(id));
INSERT INTO t1( id ) VALUES ( NULL ); INSERT INTO t1( id ) VALUES ( NULL );
SELECT t1.id FROM t1 WHERE (id is not null and id is null ); SELECT t1.id FROM t1 WHERE (id is not null and id is null );

15
mysql-test/t/func_isnull.test
View File

@ -14,6 +14,21 @@ drop table t1;
# End of 4.1 tests # End of 4.1 tests
--echo #
--echo # Bug#53933 crash when using uncacheable subquery in the having clause of outer query
--echo #
CREATE TABLE t1 (f1 INT);
INSERT INTO t1 VALUES (0),(0);
SELECT ISNULL((SELECT GET_LOCK('Bug#53933', 0) FROM t1 GROUP BY f1)) AS f2
FROM t1 GROUP BY f1 HAVING f2 = f2;
SELECT RELEASE_LOCK('Bug#53933');
DROP TABLE t1;
--echo End of 5.0 tests
# #
# Bug #41371 Select returns 1 row with condition "col is not null and col is null" # Bug #41371 Select returns 1 row with condition "col is not null and col is null"
# #

4
sql/item_cmpfunc.h
View File

@ -1324,8 +1324,8 @@ public:
else else
{ {
args[0]->update_used_tables(); args[0]->update_used_tables();
if ((const_item_cache= !(used_tables_cache= args[0]->used_tables())) && if ((const_item_cache= !(used_tables_cache= args[0]->used_tables()) &&
!with_subselect) !with_subselect))
{ {
/* Remember if the value is always NULL or never NULL */ /* Remember if the value is always NULL or never NULL */
cached_value= (longlong) args[0]->is_null(); cached_value= (longlong) args[0]->is_null();