Changed test slightly to make it repeatable

(There was a problem on some AMD system when the floating point precision wasn't accurate enough)

mysql-test/r/group_by.result

@@ -27,6 +27,8 @@ PRIMARY KEY (userID)
 INSERT INTO t2 VALUES (1,'name','pass','mail','Y','v','n','adr','1','1','1');
 INSERT INTO t2 VALUES (2,'name','pass','mail','Y','v','n','adr','1','1','1');
 INSERT INTO t2 VALUES (3,'name','pass','mail','Y','v','n','adr','1','1','1');
+INSERT INTO t2 VALUES (4,'name','pass','mail','Y','v','n','adr','1','1','1');
+INSERT INTO t2 VALUES (5,'name','pass','mail','Y','v','n','adr','1','1','1');
 SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID GROUP BY t2.userid;
 userid	MIN(t1.score)
 1	1
@@ -47,12 +49,12 @@ userid	MIN(t1.score+0.0)
 2	2.0
 SELECT t2.userid, MIN(t1.score+0.0) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2  GROUP BY t2.userid ORDER BY NULL;
 userid	MIN(t1.score+0.0)
-1	1.0
 2	2.0
+1	1.0
 EXPLAIN SELECT t2.userid, MIN(t1.score+0.0) FROM t1, t2 WHERE t1.userID=t2.userID AND t1.spID=2  GROUP BY t2.userid ORDER BY NULL;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	4	Using where; Using temporary
-t2	index	PRIMARY	PRIMARY	4	NULL	3	Using where; Using index
+t2	eq_ref	PRIMARY	PRIMARY	4	t1.userID	1	Using index
 drop table test.t1,test.t2;
 CREATE TABLE t1 (
 PID int(10) unsigned NOT NULL auto_increment,

mysql-test/t/group_by.test

@@ -34,6 +34,8 @@ CREATE TABLE t2 (
 INSERT INTO t2 VALUES (1,'name','pass','mail','Y','v','n','adr','1','1','1');
 INSERT INTO t2 VALUES (2,'name','pass','mail','Y','v','n','adr','1','1','1');
 INSERT INTO t2 VALUES (3,'name','pass','mail','Y','v','n','adr','1','1','1');
+INSERT INTO t2 VALUES (4,'name','pass','mail','Y','v','n','adr','1','1','1');
+INSERT INTO t2 VALUES (5,'name','pass','mail','Y','v','n','adr','1','1','1');
 
 SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID GROUP BY t2.userid;
 SELECT t2.userid, MIN(t1.score) FROM t1, t2 WHERE t1.userID=t2.userID GROUP BY t2.userid ORDER BY NULL;