mariadb/mysql-test/suite/optimizer_unfixed_bugs/t/bug43249.test

19 lines
631 B
Text

# Test for BUG#43249 "Innodb returns zero time for the time column
# with <=> NULL order by limit"
--source include/have_debug.inc
--source include/have_innodb.inc
SET @saved_dbug = @@SESSION.debug_dbug;
set session debug_dbug="+d,optimizer_innodb_icp";
CREATE TABLE t1(c1 TIME NOT NULL, c2 TIME NULL, c3 DATE, PRIMARY
KEY(c1), UNIQUE INDEX(c2)) engine=innodb;
INSERT INTO t1 VALUES('8:29:45',NULL,'2009-02-01');
# first time, good results:
SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c2 LIMIT 2;
# second time, bad results:
SELECT * FROM t1 WHERE c2 <=> NULL ORDER BY c2 LIMIT 2;
drop table `t1`;
SET debug_dbug= @saved_dbug;