Fix for BUG#7264: Change the test so optimizer doesn't have to make choice...

Fix for BUG#7264: Change the test so optimizer doesn't have to make choice between two with [nearly] identical
costs.

mysql-test/r/func_group.result

@@ -315,6 +315,7 @@ insert into t1 values('GTM',3,'DAL',0.070,date'1977-09-23');
 insert into t1 values('SSJ',null,'CHI',null,date'1974-03-19');
 insert into t1 values('KKK',3,'ATL',null,null);
 insert into t1 values('XXX',null,'MIN',null,null);
+insert into t1 values('WWW',1,'LED',null,null);
 insert into t2 values('TKF','Seattle','WA','AME');
 insert into t2 values('LCC','Los Angeles','CA','TWU');
 insert into t2 values('DEN','Denver','CO','BDL');
@@ -338,6 +339,7 @@ GTM	3	DAL	0.07	1977-09-23
 SSJ	NULL	CHI	NULL	1974-03-19
 KKK	3	ATL	NULL	NULL
 XXX	NULL	MIN	NULL	NULL
+WWW	1	LED	NULL	NULL
 select * from t2;
 a1	a2	a3	a4
 TKF	Seattle	WA	AME
@@ -574,15 +576,15 @@ AME	AME
 explain 
 select min(a1) from t1 where a1 > 'KKK' or a1 < 'XXX';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	PRIMARY	PRIMARY	3	NULL	14	Using where; Using index
+1	SIMPLE	t1	index	PRIMARY	PRIMARY	3	NULL	15	Using where; Using index
 explain 
 select min(a1) from t1 where a1 != 'KKK';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	PRIMARY	PRIMARY	3	NULL	14	Using where; Using index
+1	SIMPLE	t1	index	PRIMARY	PRIMARY	3	NULL	15	Using where; Using index
 explain
 select max(a3) from t1 where a2 < 2 and a3 < 'SEA';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	k1	k1	3	NULL	5	Using where; Using index
+1	SIMPLE	t1	range	k1	k1	3	NULL	6	Using where; Using index
 explain
 select max(t1.a3), min(t2.a2) from t1, t2 where t1.a2 = 2 and t1.a3 < 'MIN' and t2.a3 > 'CA';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -591,40 +593,40 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 explain
 select min(a4 - 0.01) from t1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	k2	12	NULL	14	Using index
+1	SIMPLE	t1	index	NULL	k2	12	NULL	15	Using index
 explain
 select max(a4 + 0.01) from t1;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	k2	12	NULL	14	Using index
+1	SIMPLE	t1	index	NULL	k2	12	NULL	15	Using index
 explain
 select min(a3) from t1 where (a2 +1 ) is null;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	k1	7	NULL	14	Using where; Using index
+1	SIMPLE	t1	index	NULL	k1	7	NULL	15	Using where; Using index
 explain
 select min(a3) from t1 where (a2 + 1) = 2;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	k1	7	NULL	14	Using where; Using index
+1	SIMPLE	t1	index	NULL	k1	7	NULL	15	Using where; Using index
 explain
 select min(a3) from t1 where 2 = (a2 + 1);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	k1	7	NULL	14	Using where; Using index
+1	SIMPLE	t1	index	NULL	k1	7	NULL	15	Using where; Using index
 explain
 select min(a2) from t1 where a2 < 2 * a2 - 8;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	k1	7	NULL	14	Using where; Using index
+1	SIMPLE	t1	index	NULL	k1	7	NULL	15	Using where; Using index
 explain
 select min(a1) from t1  where a1 between a3 and 'KKK';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ALL	PRIMARY	NULL	NULL	NULL	14	Using where
+1	SIMPLE	t1	ALL	PRIMARY	NULL	NULL	NULL	15	Using where
 explain
 select min(a4) from t1  where (a4 + 0.01) between 0.07 and 0.08;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	index	NULL	k2	12	NULL	14	Using where; Using index
+1	SIMPLE	t1	index	NULL	k2	12	NULL	15	Using where; Using index
 explain
 select concat(min(t1.a1),min(t2.a4)) from t1, t2 where t2.a4 <> 'AME';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	range	k2	k2	4	NULL	6	Using where; Using index
-1	SIMPLE	t1	index	NULL	PRIMARY	3	NULL	14	Using index
+1	SIMPLE	t1	index	NULL	PRIMARY	3	NULL	15	Using index
 drop table t1, t2;
 create table t1 (USR_ID integer not null, MAX_REQ integer not null, constraint PK_SEA_USER primary key (USR_ID)) engine=InnoDB;
 insert into t1 values (1, 3);

mysql-test/t/func_group.test

@@ -216,6 +216,7 @@ insert into t1 values('GTM',3,'DAL',0.070,date'1977-09-23');
 insert into t1 values('SSJ',null,'CHI',null,date'1974-03-19');
 insert into t1 values('KKK',3,'ATL',null,null);
 insert into t1 values('XXX',null,'MIN',null,null);
+insert into t1 values('WWW',1,'LED',null,null);
 
 # Populate table t2
 insert into t2 values('TKF','Seattle','WA','AME');