#
# test of ISNULL()
#

--disable_warnings
drop table if exists t1;
--enable_warnings

create table t1 (id int auto_increment primary key not null, mydate date not null);
insert into t1 values (0,"2002-05-01"),(0,"2002-05-01"),(0,"2002-05-01");
flush tables;
select * from t1 where isnull(to_days(mydate));
drop table t1;

# 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"
#

CREATE TABLE t1 (id INTEGER UNSIGNED NOT NULL AUTO_INCREMENT, PRIMARY KEY(id));
INSERT INTO t1( id ) VALUES ( NULL );
SELECT t1.id  FROM t1  WHERE (id  is not null and id is null );
DROP TABLE t1;

# End of 5.1 tests