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fixed subselects with temporary tables (SCRUM)

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fixed memory leacks
This commit is contained in:
bell@sanja.is.com.ua
2003-01-25 02:25:52 +02:00
parent 710881e4fb
commit d56e23f64e
33 changed files with 1148 additions and 561 deletions
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14
mysql-test/r/subselect.result
View File

@ -81,21 +81,18 @@ select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1);
a b
1 7
2 7
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
union (select * from t4 order by a limit 2) limit 3;
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) union (select * from t4 order by a limit 2) limit 3;
a b
1 7
2 7
3 8
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
a b
1 7
2 7
3 8
4 8
explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where
2 SUBSELECT t3 ALL NULL NULL NULL NULL 3 Using filesort
@ -330,19 +327,15 @@ Unknown column 'a' in 'having clause'
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY date);
mot topic date pseudo
joce 40143 2002-10-22 joce
joce 43506 2002-10-22 joce
SELECT * from t2 where topic IN (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
mot topic date pseudo
joce 43506 2002-10-22 joce
SELECT * from t2 where topic IN (SELECT SUM(topic) FROM t1);
mot topic date pseudo
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY date);
mot topic date pseudo
joce 40143 2002-10-22 joce
joce 43506 2002-10-22 joce
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
mot topic date pseudo
joce 43506 2002-10-22 joce
SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1);
mot topic date pseudo
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY date);
@ -351,6 +344,7 @@ joce 40143 2002-10-22 joce
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
mot topic date pseudo
joce 40143 2002-10-22 joce
joce 43506 2002-10-22 joce
SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2);
mot topic date pseudo
SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2);

12
mysql-test/t/subselect.test
View File

@ -42,12 +42,9 @@ select (select a from t3), a from t2;
select * from t2 where t2.a=(select a from t1);
insert into t3 values (6),(7),(3);
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1);
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
union (select * from t4 order by a limit 2) limit 3;
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1)
union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) union (select * from t4 order by a limit 2) limit 3;
select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
explain select * from t2 where t2.b=(select a from t3 order by 1 desc limit 1) union (select * from t4 where t4.b=(select max(t2.a)*4 from t2) order by a);
select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt;
@ -190,7 +187,10 @@ SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY date);
SELECT * from t2 where topic = any (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
SELECT * from t2 where topic = any (SELECT SUM(topic) FROM t1);
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY date);
SELECT topic FROM t2 GROUP BY date;
SELECT topic FROM t2 GROUP BY date HAVING topic < 4100;
SELECT * from t2 where topic = all (SELECT topic FROM t2 GROUP BY date HAVING topic < 4100);
SELECT *, date as fff from t2 where not (SELECT date FROM t2 GROUP BY date HAVING topic < 4100 and fff!=date);
SELECT * from t2 where topic = all (SELECT SUM(topic) FROM t2);
SELECT * from t2 where topic <> any (SELECT SUM(topic) FROM t2);
drop table t1,t2;