Merge macbook.gmz:/Users/kgeorge/mysql/work/mysql-5.0-opt

into  macbook.gmz:/Users/kgeorge/mysql/work/merge-5.1-opt

1 files changed, 34 insertions, 0 deletions

diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test
index eefa2528a17..98471622bc5 100644
--- a/mysql-test/t/subselect.test
+++ b/mysql-test/t/subselect.test
@@ -2510,6 +2510,40 @@ SELECT SQL_NO_CACHE COUNT(*)
 DROP TABLE t1,t2;
 
 #
+# Bug #25219: EXIST subquery with UNION over a mix of
+#             correlated and uncorrelated selects
+#             
+
+CREATE TABLE t1 (id char(4) PRIMARY KEY, c int);
+CREATE TABLE t2 (c int);
+
+INSERT INTO t1 VALUES ('aa', 1);
+INSERT INTO t2 VALUES (1);
+
+SELECT * FROM t1 
+  WHERE EXISTS (SELECT c FROM t2 WHERE c=1
+                UNION 
+                SELECT c from t2 WHERE c=t1.c);
+
+INSERT INTO t1 VALUES ('bb', 2), ('cc', 3), ('dd',1);
+
+SELECT * FROM t1 
+  WHERE EXISTS (SELECT c FROM t2 WHERE c=1
+                UNION 
+                SELECT c from t2 WHERE c=t1.c);
+
+INSERT INTO t2 VALUES (2);
+CREATE TABLE t3 (c int);
+INSERT INTO t3 VALUES (1);
+
+SELECT * FROM t1 
+  WHERE EXISTS (SELECT t2.c FROM t2 JOIN t3 ON t2.c=t3.c WHERE t2.c=1
+                UNION 
+                SELECT c from t2 WHERE c=t1.c);
+
+DROP TABLE t1,t2,t3;
+
+#
 # Bug#20835 (literal string with =any values)
 #
 CREATE TABLE t1 (s1 char(1));