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Fix for LP BUG#824425: Prohibiting subqueries in rows for left part of IN/ALL/ANY

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Fix for walk() method of subqueries: always call the method on the subquery.
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unknown
2011-11-13 12:02:13 +02:00
parent 3fb60b1df0
commit f76bfc40ea
7 changed files with 153 additions and 1 deletions
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47
mysql-test/r/subselect3.result
View File

@ -1424,4 +1424,51 @@ CALL p1;
ERROR 42S22: Unknown column 'f1' in 'where clause'
DROP PROCEDURE p1;
DROP TABLE t1, t2;
#
# fix of LP BUG#824425 (prohibiting subqueries in row in
# left part of IN/ALL/ANY)
#
CREATE TABLE t1 ( a int) ;
INSERT INTO t1 VALUES (20),(30);
CREATE TABLE t2 (a int) ;
INSERT INTO t2 VALUES (3),(9);
CREATE TABLE t3 ( a int, b int) ;
INSERT INTO t3 VALUES (20,5),(30,6);
set @optimizer_switch_save=@@optimizer_switch;
SET SESSION optimizer_switch='semijoin=OFF,in_to_exists=OFF,materialization=ON,partial_match_rowid_merge=ON,partial_match_table_scan=OFF';
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 )
) NOT IN (
SELECT b
FROM t3
);
a
20
30
explain extended
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 )
) NOT IN (
SELECT b
FROM t3
);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (not(<expr_cache><(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9))>(<in_optimizer>((select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)),(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)) in ( <materialize> (select `test`.`t3`.`b` from `test`.`t3` ), <primary_index_lookup>(9 in <temporary table> on distinct_key where ((9 = `<subquery3>`.`b`))))))))
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 ),
( SELECT a FROM t2 WHERE a = 3 )
) NOT IN (
SELECT b , a
FROM t3
);
ERROR 42000: This version of MySQL doesn't yet support 'SUBQUERY in ROW in left expression of IN/ALL/ANY'
set optimizer_switch=@optimizer_switch_save;
drop table t1,t2,t3;
set @@optimizer_switch=@subselect3_tmp;

47
mysql-test/r/subselect3_jcl6.result
View File

@ -1433,6 +1433,53 @@ CALL p1;
ERROR 42S22: Unknown column 'f1' in 'where clause'
DROP PROCEDURE p1;
DROP TABLE t1, t2;
#
# fix of LP BUG#824425 (prohibiting subqueries in row in
# left part of IN/ALL/ANY)
#
CREATE TABLE t1 ( a int) ;
INSERT INTO t1 VALUES (20),(30);
CREATE TABLE t2 (a int) ;
INSERT INTO t2 VALUES (3),(9);
CREATE TABLE t3 ( a int, b int) ;
INSERT INTO t3 VALUES (20,5),(30,6);
set @optimizer_switch_save=@@optimizer_switch;
SET SESSION optimizer_switch='semijoin=OFF,in_to_exists=OFF,materialization=ON,partial_match_rowid_merge=ON,partial_match_table_scan=OFF';
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 )
) NOT IN (
SELECT b
FROM t3
);
a
20
30
explain extended
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 )
) NOT IN (
SELECT b
FROM t3
);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00
3 SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00
2 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 Using where
Warnings:
Note 1003 select `test`.`t1`.`a` AS `a` from `test`.`t1` where (not(<expr_cache><(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9))>(<in_optimizer>((select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)),(select `test`.`t2`.`a` from `test`.`t2` where (`test`.`t2`.`a` = 9)) in ( <materialize> (select `test`.`t3`.`b` from `test`.`t3` ), <primary_index_lookup>(9 in <temporary table> on distinct_key where ((9 = `<subquery3>`.`b`))))))))
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 ),
( SELECT a FROM t2 WHERE a = 3 )
) NOT IN (
SELECT b , a
FROM t3
);
ERROR 42000: This version of MySQL doesn't yet support 'SUBQUERY in ROW in left expression of IN/ALL/ANY'
set optimizer_switch=@optimizer_switch_save;
drop table t1,t2,t3;
set @@optimizer_switch=@subselect3_tmp;
set join_cache_level=default;
show variables like 'join_cache_level';

47
mysql-test/t/subselect3.test
View File

@ -1187,5 +1187,52 @@ CALL p1;
DROP PROCEDURE p1;
DROP TABLE t1, t2;
--echo #
--echo # fix of LP BUG#824425 (prohibiting subqueries in row in
--echo # left part of IN/ALL/ANY)
--echo #
CREATE TABLE t1 ( a int) ;
INSERT INTO t1 VALUES (20),(30);
CREATE TABLE t2 (a int) ;
INSERT INTO t2 VALUES (3),(9);
CREATE TABLE t3 ( a int, b int) ;
INSERT INTO t3 VALUES (20,5),(30,6);
set @optimizer_switch_save=@@optimizer_switch;
SET SESSION optimizer_switch='semijoin=OFF,in_to_exists=OFF,materialization=ON,partial_match_rowid_merge=ON,partial_match_table_scan=OFF';
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 )
) NOT IN (
SELECT b
FROM t3
);
explain extended
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 )
) NOT IN (
SELECT b
FROM t3
);
--error ER_NOT_SUPPORTED_YET
SELECT * FROM t1
WHERE (
( SELECT a FROM t2 WHERE a = 9 ),
( SELECT a FROM t2 WHERE a = 3 )
) NOT IN (
SELECT b , a
FROM t3
);
set optimizer_switch=@optimizer_switch_save;
drop table t1,t2,t3;
# The following command must be the last one the file
set @@optimizer_switch=@subselect3_tmp;