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Fixed bug in MAX() optimization when used with JOIN and ON expressions

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(Patch from 4.0.5)
This commit is contained in:
monty@hundin.mysql.fi
2002-12-02 13:41:08 +02:00
parent f89d91c53c
commit fab1fcea8b
5 changed files with 100 additions and 1 deletions
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6
mysql-test/r/group_by.result
View File

@ -84,3 +84,9 @@ xID xID1 Level
2 2 **
3 134 ***
4 185 ****
pid c1id c2id value id active id active
1 1 NULL 1 1 Yes NULL NULL
1 NULL 3 3 NULL NULL 3 Yes
1 4 NULL 4 4 Yes NULL NULL
max(value)
4

41
mysql-test/t/group_by.test
View File

@ -2,7 +2,7 @@
# Test of group (Failed for Lars Hoss <lh@pbm.de>)
#
drop table if exists t1,t2;
drop table if exists t1,t2,t3;
CREATE TABLE t1 (
spID int(10) unsigned,
userID int(10) unsigned,
@ -270,3 +270,42 @@ insert into t1 values (1,244,NULL),(2,243,NULL),(134,223,NULL),(185,186,NULL);
select S.ID as xID, S.ID1 as xID1 from t1 as S left join t1 as yS on S.ID1 between yS.ID1 and yS.ID2;
select S.ID as xID, S.ID1 as xID1, repeat('*',count(distinct yS.ID)) as Level from t1 as S left join t1 as yS on S.ID1 between yS.ID1 and yS.ID2 group by xID order by xID1;
drop table t1;
#
# Problem with MAX and LEFT JOIN
#
CREATE TABLE t1 (
pid int(11) unsigned NOT NULL default '0',
c1id int(11) unsigned default NULL,
c2id int(11) unsigned default NULL,
value int(11) unsigned NOT NULL default '0',
UNIQUE KEY pid2 (pid,c1id,c2id),
UNIQUE KEY pid (pid,value)
) TYPE=MyISAM;
INSERT INTO t1 VALUES (1, 1, NULL, 1),(1, 2, NULL, 2),(1, NULL, 3, 3),(1, 4, NULL, 4),(1, 5, NULL, 5);
CREATE TABLE t2 (
id int(11) unsigned NOT NULL default '0',
active enum('Yes','No') NOT NULL default 'Yes',
PRIMARY KEY (id)
) TYPE=MyISAM;
INSERT INTO t2 VALUES (1, 'Yes'),(2, 'No'),(4, 'Yes'),(5, 'No');
CREATE TABLE t3 (
id int(11) unsigned NOT NULL default '0',
active enum('Yes','No') NOT NULL default 'Yes',
PRIMARY KEY (id)
);
INSERT INTO t3 VALUES (3, 'Yes');
select * from t1 AS m LEFT JOIN t2 AS c1 ON m.c1id =
c1.id AND c1.active = 'Yes' LEFT JOIN t3 AS c2 ON m.c2id = c2.id AND
c2.active = 'Yes' WHERE m.pid=1 AND (c1.id IS NOT NULL OR c2.id IS NOT NULL);
select max(value) from t1 AS m LEFT JOIN t2 AS c1 ON
m.c1id = c1.id AND c1.active = 'Yes' LEFT JOIN t3 AS c2 ON m.c2id =
c2.id AND c2.active = 'Yes' WHERE m.pid=1 AND (c1.id IS NOT NULL OR c2.id IS
NOT NULL);
drop table t1,t2,t3;