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| author | Igor Babaev <igor@askmonty.org> | 2022-04-22 07:53:16 -0700 |
|---|---|---|
| committer | Igor Babaev <igor@askmonty.org> | 2022-04-25 09:30:42 -0700 |
| commit | c5e68b6dcddbb6325c7684bfb4fba28e1c13e1ae (patch) | |
| tree | 9113a7895af8769e327c57ba101bbd0a05d4d07e /mysql-test/r | |
| parent | 1bcdc3e9eb1a393fd07403c874ac7d7edc6d8a0a (diff) | |
| download | mariadb-git-c5e68b6dcddbb6325c7684bfb4fba28e1c13e1ae.tar.gz | |
MDEV-27212 Crash in Item_equal::sort on second execution of stored procedurebb-10.2-igor
This bug could cause a crash of the server at the second call of a stored
procedure when it executed a query containing a mergeable derived table /
view whose specification used another mergeable derived_table or view and a
subquery with outer reference in the select list of the specification.
Such queries could cause the same problem when they were executed for the
second time in a prepared mode.
The problem appeared due to a typo mistake in the legacy code of the function
create_view_field() that prevented building Item_direct_view_ref wrapper
for the mentioned outer reference at the second execution of the query and
setting the depended_from field for the outer reference.
Approved by Oleksandr Byelkin <sanja@mariadb.com>
Diffstat (limited to 'mysql-test/r')
| -rw-r--r-- | mysql-test/r/derived_view.result | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/mysql-test/r/derived_view.result b/mysql-test/r/derived_view.result index 0c045e39271..31a92207442 100644 --- a/mysql-test/r/derived_view.result +++ b/mysql-test/r/derived_view.result @@ -3586,4 +3586,64 @@ f2 f3 DROP PROCEDURE p1; DROP VIEW v1,v2,v3; DROP TABLE t1; +# +# MDEV-27212: 2-nd execution of PS for select with embedded derived tables +# and correlated subquery in select list of outer derived +# +create table t1 ( id int, id2 int ) engine=myisam; +create table t2 ( x3 int , x1 int , x2 int, a1 int) engine=myisam; +insert into t1 values (3, 2), (4, 2), (3, 4); +insert into t2 values (1, 2, 2, 1), (1, 3, 3, 2), (2, 3, 3, 1); +prepare stmt from "select id from t1 +join +( select dt2.x1, +( select sum(a1) from t2 where t2.x1 = dt2.x1 ) m +from ( select x1 from t2 u where x3 = 1 ) dt2 +) dt +on t1.id = dt.x1 +where t1.id2 < dt.m"; +execute stmt; +id +3 +execute stmt; +id +3 +deallocate prepare stmt; +create procedure sp1() select id from t1 +join +( select dt2.x1, +( select sum(a1) from t2 where t2.x1 = dt2.x1 ) m +from ( select x1 from t2 u where x3 = 1 ) dt2 +) dt +on t1.id = dt.x1 +where t1.id2 < dt.m; +call sp1(); +id +3 +call sp1(); +id +3 +create view v2 as select x1 from t2 u where x3 = 1; +create view v as +select v2.x1, +( select sum(a1) from t2 where t2.x1 = v2.x1 ) m from v2; +prepare stmt from "select id from t1 join v on t1.id = v.x1 where t1.id2 < v.m"; +execute stmt; +id +3 +execute stmt; +id +3 +deallocate prepare stmt; +create procedure sp2() select id from t1 join v on t1.id = v.x1 where t1.id2 < v.m; +call sp2(); +id +3 +call sp2(); +id +3 +drop procedure sp1; +drop procedure sp2; +drop view v, v2; +drop table t1,t2; # End of 10.2 tests |