Test case for bug lp:611690

The bug itself has been fixed by MWL#89.

mysql-test/r/subselect4.result

@@ -1815,4 +1815,72 @@ SELECT DISTINCT f4
 FROM t1));
 f2	f1
 drop table t1, t2, t3, t4;
+#
+# LP BUG#611690 Crash in select_describe() with nested subqueries
+#
+CREATE TABLE t1 (
+col_int_key int(11) DEFAULT NULL,
+col_varchar_key varchar(1) DEFAULT NULL,
+col_varchar_nokey varchar(1) DEFAULT NULL,
+KEY col_int_key (col_int_key),
+KEY col_varchar_key (col_varchar_key,col_int_key)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+INSERT INTO t1 VALUES (8,'v','v');
+INSERT INTO t1 VALUES (9,'r','r');
+CREATE TABLE t2 (
+col_int_key int(11) DEFAULT NULL,
+col_varchar_key varchar(1) DEFAULT NULL,
+col_varchar_nokey varchar(1) DEFAULT NULL,
+KEY col_int_key (col_int_key),
+KEY col_varchar_key (col_varchar_key,col_int_key)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+INSERT INTO t2 VALUES (2,'w','w');
+INSERT INTO t2 VALUES (9,'m','m');
+set @old_optimizer_switch = @@optimizer_switch;
+set @@optimizer_switch='subquery_cache=off,materialization=on,in_to_exists=off,semijoin=off';
+EXPLAIN
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+ON SUBQUERY2_t2.col_varchar_key
+WHERE SUBQUERY2_t2.col_varchar_nokey IN
+(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	index	NULL	col_int_key	5	NULL	2	Using index
+2	SUBQUERY	SUBQUERY2_t1	index	NULL	col_int_key	5	NULL	2	Using index
+2	SUBQUERY	SUBQUERY2_t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
+3	SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+ON SUBQUERY2_t2.col_varchar_key
+WHERE SUBQUERY2_t2.col_varchar_nokey IN
+(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+col_int_key
+set @@optimizer_switch='subquery_cache=off,materialization=off,in_to_exists=on,semijoin=off';
+EXPLAIN
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+ON SUBQUERY2_t2.col_varchar_key
+WHERE SUBQUERY2_t2.col_varchar_nokey IN
+(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	PRIMARY	t2	index	NULL	col_int_key	5	NULL	2	Using index
+2	SUBQUERY	SUBQUERY2_t1	index	NULL	col_int_key	5	NULL	2	Using index
+2	SUBQUERY	SUBQUERY2_t2	ALL	NULL	NULL	NULL	NULL	2	Using where; Using join buffer (flat, BNL join)
+3	DEPENDENT SUBQUERY	t1	ALL	NULL	NULL	NULL	NULL	2	Using temporary
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+ON SUBQUERY2_t2.col_varchar_key
+WHERE SUBQUERY2_t2.col_varchar_nokey IN
+(SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+col_int_key
+drop table t1, t2;
+set @@optimizer_switch = @old_optimizer_switch;
 set optimizer_switch=@subselect4_tmp;

mysql-test/t/subselect4.test

@@ -1494,4 +1494,68 @@ WHERE t3.f1 = (
 
 drop table t1, t2, t3, t4;
 
+--echo #
+--echo # LP BUG#611690 Crash in select_describe() with nested subqueries
+--echo #
+
+CREATE TABLE t1 (
+  col_int_key int(11) DEFAULT NULL,
+  col_varchar_key varchar(1) DEFAULT NULL,
+  col_varchar_nokey varchar(1) DEFAULT NULL,
+  KEY col_int_key (col_int_key),
+  KEY col_varchar_key (col_varchar_key,col_int_key)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+INSERT INTO t1 VALUES (8,'v','v');
+INSERT INTO t1 VALUES (9,'r','r');
+
+CREATE TABLE t2 (
+  col_int_key int(11) DEFAULT NULL,
+  col_varchar_key varchar(1) DEFAULT NULL,
+  col_varchar_nokey varchar(1) DEFAULT NULL,
+  KEY col_int_key (col_int_key),
+  KEY col_varchar_key (col_varchar_key,col_int_key)
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+INSERT INTO t2 VALUES (2,'w','w');
+INSERT INTO t2 VALUES (9,'m','m');
+
+set @old_optimizer_switch = @@optimizer_switch;
+
+set @@optimizer_switch='subquery_cache=off,materialization=on,in_to_exists=off,semijoin=off';
+EXPLAIN
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+       FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+               ON SUBQUERY2_t2.col_varchar_key
+       WHERE SUBQUERY2_t2.col_varchar_nokey IN
+             (SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+       FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+               ON SUBQUERY2_t2.col_varchar_key
+       WHERE SUBQUERY2_t2.col_varchar_nokey IN
+             (SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+
+set @@optimizer_switch='subquery_cache=off,materialization=off,in_to_exists=on,semijoin=off';
+EXPLAIN
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+       FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+               ON SUBQUERY2_t2.col_varchar_key
+       WHERE SUBQUERY2_t2.col_varchar_nokey IN
+             (SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+SELECT col_int_key
+FROM t2
+WHERE (SELECT SUBQUERY2_t1.col_int_key
+       FROM t1 SUBQUERY2_t1 STRAIGHT_JOIN t1 SUBQUERY2_t2
+               ON SUBQUERY2_t2.col_varchar_key
+       WHERE SUBQUERY2_t2.col_varchar_nokey IN
+             (SELECT col_varchar_nokey FROM t1 GROUP BY col_varchar_nokey));
+
+drop table t1, t2;
+
+set @@optimizer_switch = @old_optimizer_switch;
+
 set optimizer_switch=@subselect4_tmp;