From 3ec4296ec413e866c3efabc8dfa94172ad5f7c04 Mon Sep 17 00:00:00 2001
From: Igor Babaev <igor@askmonty.org>
Date: Thu, 12 Dec 2013 13:55:33 -0800
Subject: Fixed bug mdev-5410. The fix for bug #27937 was incomplete: it did
 not handle correctly the queries containing UNION with global ORDER BY in
 subselects.

---
 mysql-test/r/ps.result | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'mysql-test/r')

diff --git a/mysql-test/r/ps.result b/mysql-test/r/ps.result
index 75aef40b529..e5411b2a210 100644
--- a/mysql-test/r/ps.result
+++ b/mysql-test/r/ps.result
@@ -3284,4 +3284,27 @@ Handler_read_rnd_deleted	0
 Handler_read_rnd_next	0
 deallocate prepare st;
 drop table t1;
+#
+# Bug mdev-5410: crash at the execution of PS with subselect
+#                formed by UNION with global ORDER BY
+#
+CREATE TABLE t1 (a int DEFAULT NULL);
+INSERT INTO t1 VALUES (2), (4);
+CREATE TABLE t2 (b int DEFAULT NULL);
+INSERT INTO t2 VALUES (1), (3);
+PREPARE stmt FROM "
+SELECT c1 FROM (SELECT (SELECT a FROM t1 WHERE t1.a <= t2.b
+                        UNION ALL
+                        SELECT a FROM t1 WHERE t1.a+3<= t2.b
+                        ORDER BY a DESC) AS c1 FROM t2) t3;
+";
+EXECUTE stmt;
+c1
+NULL
+2
+EXECUTE stmt;
+c1
+NULL
+2
+DROP TABLE t1,t2;
 # End of 5.3 tests
-- 
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