5.3-merge

1 files changed, 40 insertions, 0 deletions

diff --git a/mysql-test/r/derived_view.result b/mysql-test/r/derived_view.result
index 9cd86fbe8e6..9b88cd214b3 100644
--- a/mysql-test/r/derived_view.result
+++ b/mysql-test/r/derived_view.result
@@ -2366,6 +2366,46 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 3	DEPENDENT SUBQUERY	pi	ref	gallery_id	gallery_id	4	test.gal.id	4	Using temporary; Using filesort
 drop table galleries, pictures;
 #
+# MDEV-5740: Assertion 
+#`!derived->first_select()->exclude_from_table_unique_test ||
+#derived->outer_select()-> exclude_from_table_unique_test'
+#failed on 2nd execution of PS with derived_merge
+#
+set @save_optimizer_switch5740=@@optimizer_switch;
+SET optimizer_switch = 'derived_merge=on';
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (1),(2);
+CREATE TABLE t2 (b INT);
+INSERT INTO t2 VALUES (3),(4);
+PREPARE stmt FROM '
+  INSERT INTO t1 SELECT * FROM t2 UNION SELECT * FROM (SELECT * FROM t1) AS sq  
+';
+EXECUTE stmt;
+select * from t1;
+a
+1
+2
+3
+4
+1
+2
+EXECUTE stmt;
+select * from t1;
+a
+1
+2
+3
+4
+1
+2
+3
+4
+1
+2
+deallocate prepare stmt;
+drop table t1,t2;
+set optimizer_switch=@save_optimizer_switch5740;
+#
 # end of 5.3 tests
 #
 set optimizer_switch=@exit_optimizer_switch;