updated test results

mysql-test/r/merge.result

@@ -541,3 +541,23 @@ select max(b) from t1 where a = 2;
 max(b)
 1
 drop table if exists t,t1,t2;
+drop table if exists t1, t2, t3, t4, t5, t6;
+create table t1 (a int not null);
+create table t2 (a int not null);
+insert into t1 values (1);
+insert into t2 values (2);
+create temporary table t3 (a int not null) TYPE=MERGE UNION=(t1,t2);
+select * from t3;
+a
+1
+2
+create temporary table t4 (a int not null);
+create temporary table t5 (a int not null);
+insert into t4 values (1);
+insert into t5 values (2);
+create temporary table t6 (a int not null) TYPE=MERGE UNION=(t4,t5);
+select * from t6;
+a
+1
+2
+drop table if exists t1, t2, t3, t4, t5, t6;