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author | Sergey Petrunya <psergey@askmonty.org> | 2014-01-23 21:26:04 +0400 |
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committer | Sergey Petrunya <psergey@askmonty.org> | 2014-01-23 21:26:04 +0400 |
commit | 519c7305ac4e1e4bafe0acc56764fa40a0e621ab (patch) | |
tree | 83890384c6954e2e1206198169118ed45d4c1422 /mysql-test | |
parent | d9cb1352c8256d9c19a3d29af6fe3d705578a413 (diff) | |
download | mariadb-git-519c7305ac4e1e4bafe0acc56764fa40a0e621ab.tar.gz |
MDEV-5368: Server crashes in Item_in_subselect::optimize on ...
- convert_subq_to_sj() must connect child select's tables into
parent select's TABLE_LIST::next_local chain.
- The problem was that it took child's leaf_tables.head() which
is different. This could cause certain tables (in this bug's case,
child select's non-merged semi-join) not to be present in
TABLE_LIST::next_local chain. Which would cause non-merged semi-join
not to be initialized in setup_tables(), which would lead to
NULL pointer dereference.
Diffstat (limited to 'mysql-test')
-rw-r--r-- | mysql-test/r/subselect_mat.result | 18 | ||||
-rw-r--r-- | mysql-test/r/subselect_sj_mat.result | 18 | ||||
-rw-r--r-- | mysql-test/t/subselect_sj_mat.test | 20 |
3 files changed, 56 insertions, 0 deletions
diff --git a/mysql-test/r/subselect_mat.result b/mysql-test/r/subselect_mat.result index 66b94af5d44..c47881d5434 100644 --- a/mysql-test/r/subselect_mat.result +++ b/mysql-test/r/subselect_mat.result @@ -2023,6 +2023,24 @@ INSERT INTO t1 VALUES (1,3,5),(2,4,6); SELECT * FROM t1 WHERE 8 IN (SELECT MIN(pk) FROM t1) AND (pk = a OR pk = b); pk a b DROP TABLE t1; +# +# MDEV-5368: Server crashes in Item_in_subselect::optimize on 2nd +# execution of PS with IN subqueries, materialization+semijoin +# +CREATE TABLE t1 (a INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1),(3); +CREATE TABLE t2 (b INT) ENGINE=MyISAM; +CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2; +INSERT INTO t2 VALUES (8),(9); +PREPARE stmt FROM " +SELECT * FROM t1 WHERE 1 IN ( SELECT b FROM v2 WHERE 2 IN ( SELECT MAX(a) FROM t1 ) ) +"; +EXECUTE stmt; +a +EXECUTE stmt; +a +DROP TABLE t1, t2; +DROP VIEW v2; # End of 5.3 tests set @subselect_mat_test_optimizer_switch_value=null; set @@optimizer_switch='materialization=on,in_to_exists=off,semijoin=off'; diff --git a/mysql-test/r/subselect_sj_mat.result b/mysql-test/r/subselect_sj_mat.result index 61ebe3cf5c3..f267f32c887 100644 --- a/mysql-test/r/subselect_sj_mat.result +++ b/mysql-test/r/subselect_sj_mat.result @@ -2063,4 +2063,22 @@ INSERT INTO t1 VALUES (1,3,5),(2,4,6); SELECT * FROM t1 WHERE 8 IN (SELECT MIN(pk) FROM t1) AND (pk = a OR pk = b); pk a b DROP TABLE t1; +# +# MDEV-5368: Server crashes in Item_in_subselect::optimize on 2nd +# execution of PS with IN subqueries, materialization+semijoin +# +CREATE TABLE t1 (a INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1),(3); +CREATE TABLE t2 (b INT) ENGINE=MyISAM; +CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2; +INSERT INTO t2 VALUES (8),(9); +PREPARE stmt FROM " +SELECT * FROM t1 WHERE 1 IN ( SELECT b FROM v2 WHERE 2 IN ( SELECT MAX(a) FROM t1 ) ) +"; +EXECUTE stmt; +a +EXECUTE stmt; +a +DROP TABLE t1, t2; +DROP VIEW v2; # End of 5.3 tests diff --git a/mysql-test/t/subselect_sj_mat.test b/mysql-test/t/subselect_sj_mat.test index 840e5436a56..bf5360dd4a7 100644 --- a/mysql-test/t/subselect_sj_mat.test +++ b/mysql-test/t/subselect_sj_mat.test @@ -1706,4 +1706,24 @@ INSERT INTO t1 VALUES (1,3,5),(2,4,6); SELECT * FROM t1 WHERE 8 IN (SELECT MIN(pk) FROM t1) AND (pk = a OR pk = b); DROP TABLE t1; +--echo # +--echo # MDEV-5368: Server crashes in Item_in_subselect::optimize on 2nd +--echo # execution of PS with IN subqueries, materialization+semijoin +--echo # +CREATE TABLE t1 (a INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (1),(3); + +CREATE TABLE t2 (b INT) ENGINE=MyISAM; +CREATE ALGORITHM=MERGE VIEW v2 AS SELECT * FROM t2; +INSERT INTO t2 VALUES (8),(9); + +PREPARE stmt FROM " +SELECT * FROM t1 WHERE 1 IN ( SELECT b FROM v2 WHERE 2 IN ( SELECT MAX(a) FROM t1 ) ) +"; + +EXECUTE stmt; +EXECUTE stmt; +DROP TABLE t1, t2; +DROP VIEW v2; + --echo # End of 5.3 tests |