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-rw-r--r--mysql-test/t/union.test13
1 files changed, 13 insertions, 0 deletions
diff --git a/mysql-test/t/union.test b/mysql-test/t/union.test
index 7d1818ab724..06110474992 100644
--- a/mysql-test/t/union.test
+++ b/mysql-test/t/union.test
@@ -483,3 +483,16 @@ select col1 n from t1 union select col2 n from t1 order by n;
alter table t1 add index myindex (col2);
select col1 n from t1 union select col2 n from t1 order by n;
drop table t1;
+
+#
+# Bug #1428, incorrect handling of UNION ALL
+# NOTE: The current result is wrong, needs to be fixed!
+#
+
+create table t1 (i int);
+insert into t1 values (1);
+select * from t1 UNION select * from t1;
+select * from t1 UNION ALL select * from t1;
+# The following should return 2 lines
+select * from t1 UNION select * from t1 UNION ALL select * from t1;
+drop table t1;