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author | Igor Babaev <igor@askmonty.org> | 2021-02-10 23:38:52 -0800 |
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committer | Igor Babaev <igor@askmonty.org> | 2021-02-10 23:38:52 -0800 |
commit | da88e1ec12b0ba39552bf54367c1bb3b89eac4a8 (patch) | |
tree | 6c1f254615b8673ec149010f165b76fb787483b1 /mysql-test/main/table_value_constr.result | |
parent | 59eda73eff1a22ac0373d818bc802c05e82b5449 (diff) | |
download | mariadb-git-da88e1ec12b0ba39552bf54367c1bb3b89eac4a8.tar.gz |
MDEV-24840 Crash caused by query with IN subquery containing union
of two table value costructors
This bug affected queries with a [NOT] IN/ANY/ALL subquery whose top level
unit contained several table value constructors.
The problem appeared because the code of the function
Item_subselect::fix_fields() that was responsible for wrapping table
value constructors encountered at the top level unit of a [NOT] IN/ANY/ALL
subquery did not take into account that the chain of the select objects
comprising the unit were not immutable.
Approved by Oleksandr Byelkin <sanja@mariadb.com>
Diffstat (limited to 'mysql-test/main/table_value_constr.result')
-rw-r--r-- | mysql-test/main/table_value_constr.result | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/mysql-test/main/table_value_constr.result b/mysql-test/main/table_value_constr.result index 69c75ddab75..d7b32865db5 100644 --- a/mysql-test/main/table_value_constr.result +++ b/mysql-test/main/table_value_constr.result @@ -2674,4 +2674,72 @@ values (1,2); values ((select min(a), max(b) from t1)); ERROR 21000: Operand should contain 1 column(s) drop table t1; +# +# MDEV-24840: union of TVCs in IN subquery +# +create table t1 (a int) engine=myisam; +insert into t1 values (3), (7), (1); +select a from t1 where a in (values (7) union values (8)); +a +7 +explain extended select a from t1 where a in (values (7) union values (8)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +4 DEPENDENT SUBQUERY <derived2> ref key0 key0 4 func 2 100.00 +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +5 DEPENDENT UNION <derived3> ref key0 key0 4 func 2 100.00 +3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union4,5> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#4 */ select `tvc_0`.`7` from (values (7)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`7` union /* select#5 */ select `tvc_0`.`8` from (values (8)) `tvc_0` where <cache>(`test`.`t1`.`a`) = `tvc_0`.`8`))) +prepare stmt from "select a from t1 where a in (values (7) union values (8))"; +execute stmt; +a +7 +execute stmt; +a +7 +deallocate prepare stmt; +select a from t1 where a not in (values (7) union values (8)); +a +3 +1 +explain extended select a from t1 where a not in (values (7) union values (8)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +4 DEPENDENT SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 Using where +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +5 DEPENDENT UNION <derived3> ALL NULL NULL NULL NULL 2 100.00 Using where +3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union4,5> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where !<expr_cache><`test`.`t1`.`a`>(<in_optimizer>(`test`.`t1`.`a`,<exists>(/* select#4 */ select `tvc_0`.`7` from (values (7)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) = `tvc_0`.`7`) union /* select#5 */ select `tvc_0`.`8` from (values (8)) `tvc_0` where trigcond(<cache>(`test`.`t1`.`a`) = `tvc_0`.`8`)))) +select a from t1 where a < all(values (7) union values (8)); +a +3 +1 +explain extended select a from t1 where a < all(values (7) union values (8)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +4 SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +5 UNION <derived3> ALL NULL NULL NULL NULL 2 100.00 +3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union4,5> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <not>(<in_optimizer>(`test`.`t1`.`a`,<min>(/* select#4 */ select `tvc_0`.`7` from (values (7)) `tvc_0` union /* select#5 */ select `tvc_0`.`8` from (values (8)) `tvc_0`) <= <cache>(`test`.`t1`.`a`))) +select a from t1 where a >= any(values (7) union values (8)); +a +7 +explain extended select a from t1 where a >= any(values (7) union values (8)); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where +4 SUBQUERY <derived2> ALL NULL NULL NULL NULL 2 100.00 +2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +5 UNION <derived3> ALL NULL NULL NULL NULL 2 100.00 +3 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL No tables used +NULL UNION RESULT <union4,5> ALL NULL NULL NULL NULL NULL NULL +Warnings: +Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <nop>(<in_optimizer>(`test`.`t1`.`a`,<min>(/* select#4 */ select `tvc_0`.`7` from (values (7)) `tvc_0` union /* select#5 */ select `tvc_0`.`8` from (values (8)) `tvc_0`) <= <cache>(`test`.`t1`.`a`))) +drop table t1; End of 10.3 tests |