5.3 merge

1 files changed, 26 insertions, 0 deletions

diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result
index 697226c5740..7f507b7e2d1 100644
--- a/mysql-test/r/subselect4.result
+++ b/mysql-test/r/subselect4.result
@@ -2248,6 +2248,32 @@ NULL	NULL
 drop table t1, t2;
 set optimizer_switch=@subselect4_tmp;
 #
+# MDEV-3928  Assertion `example' failed in Item_cache::is_expensive_processor with a 2-level IN subquery 
+#
+CREATE TABLE t1 (a1 INT, b1 TIME) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (4,'21:22:34'),(6,'10:50:38');
+CREATE TABLE t2 (a2 INT, b2 TIME) ENGINE=MyISAM;
+INSERT INTO t2 VALUES (8, '06:17:39');
+CREATE TABLE t3 (a3 INT, b3 TIME) ENGINE=MyISAM;
+INSERT INTO t3 VALUES (1,'00:00:01'),(7,'00:00:02');
+EXPLAIN
+SELECT * FROM t1 WHERE a1 IN ( 
+SELECT a2 FROM t2 WHERE a2 IN ( 
+SELECT a3 FROM t3 WHERE b2 = b1 AND b2 <= b1 ORDER BY b3 
+)
+);
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	system	NULL	NULL	NULL	NULL	1	
+1	PRIMARY	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
+3	DEPENDENT SUBQUERY	t3	ALL	NULL	NULL	NULL	NULL	2	Using where
+SELECT * FROM t1 WHERE a1 IN ( 
+SELECT a2 FROM t2 WHERE a2 IN ( 
+SELECT a3 FROM t3 WHERE b2 = b1 AND b2 <= b1 ORDER BY b3 
+)
+);
+a1	b1
+drop table t1, t2, t3;
+#
 # MDEV-3899  Valgrind warnings (blocks are definitely lost) in filesort on IN subquery with SUM and DISTINCT
 #
 CREATE TABLE t1 (a INT) ENGINE=MyISAM;