Bug #21302: Result not properly sorted when using an ORDER BY on a second table in a join

 - undeterminstic tests fixed

mysql-test/r/order_by.result

@@ -862,13 +862,13 @@ ORDER BY c;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	Using temporary; Using filesort
 1	SIMPLE	t2	const	PRIMARY	PRIMARY	4	const	1	
-SELECT t1.b as a, t2.b as c FROM 
+SELECT t2.b as c FROM 
 t1 LEFT JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) 
 ORDER BY c;
-a	c
-1	NULL
-3	NULL
-2	2
+c
+NULL
+NULL
+2
 explain SELECT t1.b as a, t2.b as c FROM 
 t1 JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2)  
 ORDER BY c;

mysql-test/t/order_by.test

@@ -589,7 +589,7 @@ INSERT INTO t1 VALUES (1,1), (2,2), (3,3);
 explain SELECT t1.b as a, t2.b as c FROM 
  t1 LEFT JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) 
 ORDER BY c;
-SELECT t1.b as a, t2.b as c FROM 
+SELECT t2.b as c FROM 
  t1 LEFT JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) 
 ORDER BY c;