Merge with 4.1

1 files changed, 19 insertions, 0 deletions

diff --git a/mysql-test/r/derived.result b/mysql-test/r/derived.result
index 071cb673501..fd6a834c694 100644
--- a/mysql-test/r/derived.result
+++ b/mysql-test/r/derived.result
@@ -344,3 +344,22 @@ INSERT INTO t1 VALUES ('root','localhost'), ('root','%');
 SELECT * FROM (SELECT (SELECT a.a FROM t1 AS a WHERE a.a = b.a) FROM t1 AS b) AS c;
 ERROR 21000: Subquery returns more than 1 row
 DROP TABLE t1;
+create table t1(a int);
+create table t2(a int);
+create table t3(a int);
+insert into t1 values(1),(1);
+insert into t2 values(2),(2);
+insert into t3 values(3),(3);
+select * from t1 union distinct select * from t2 union all select * from t3;
+a
+1
+2
+3
+3
+select * from (select * from t1 union distinct select * from t2 union all select * from t3) X;
+a
+1
+2
+3
+3
+drop table t1, t2, t3;