Test case for BUG#6558 - Views: create fails with JOIN ... USING

The bug is non-view specific, and it resulted from incorrect
name resolution of natural join result columns. The bug is
fixed by WL#2486.


mysql-test/r/select.result:
  Added test case for BUG#6558
mysql-test/t/select.test:
  Added test case for BUG#6558

mysql-test/r/select.result

@@ -2765,3 +2765,13 @@ f1	f2	f3	f4
  2	2	 2	 one 
  2	2	 2	 two 
 drop table t1,t2;
+create table t1 (empnum smallint, grp int);
+create table t2 (empnum int, name char(5));
+insert into t1 values(1,1);
+insert into t2 values(1,'bob');
+create view v1 as select * from t2 inner join t1 using (empnum);
+select * from v1;
+empnum	name	grp
+1	bob	1
+drop table t1,t2;
+drop view v1;

mysql-test/t/select.test

@@ -2358,3 +2358,16 @@ insert into t1 values (" 2", 2);
 insert into t2 values (" 2", " one "),(" 2", " two ");
 select * from t1 left join t2 on f1 = f3;
 drop table t1,t2;
+
+#
+# Bug #6558 Views: CREATE VIEW fails with JOIN ... USING
+#
+
+create table t1 (empnum smallint, grp int);
+create table t2 (empnum int, name char(5));
+insert into t1 values(1,1);
+insert into t2 values(1,'bob');
+create view v1 as select * from t2 inner join t1 using (empnum);
+select * from v1;
+drop table t1,t2;
+drop view v1;