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author | Sergey Petrunya <psergey@askmonty.org> | 2014-01-23 15:41:51 +0400 |
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committer | Sergey Petrunya <psergey@askmonty.org> | 2014-01-23 15:41:51 +0400 |
commit | f0fa66a26de19d4f31a0b5466ac064650c81464a (patch) | |
tree | f94f4339e6905578c8993d4de57af7ff7014c9be /mysql-test | |
parent | 5e02635eb846214b462ed4ab45b2142a08dc5a91 (diff) | |
download | mariadb-git-f0fa66a26de19d4f31a0b5466ac064650c81464a.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 62ec0955e88..ce93f70df63 100644 --- a/mysql-test/r/subselect_mat.result +++ b/mysql-test/r/subselect_mat.result @@ -2058,6 +2058,24 @@ CA ML CA ML CA ML RO ML DROP TABLE t1,t2; set join_cache_level=@tmp_mdev5056; +# +# 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 5.5 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 38ab07882de..2ccb108eb38 100644 --- a/mysql-test/r/subselect_sj_mat.result +++ b/mysql-test/r/subselect_sj_mat.result @@ -2098,4 +2098,22 @@ CA ML CA ML CA ML RO ML DROP TABLE t1,t2; set join_cache_level=@tmp_mdev5056; +# +# 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 5.5 tests diff --git a/mysql-test/t/subselect_sj_mat.test b/mysql-test/t/subselect_sj_mat.test index 58831c4ffb3..4194c0a9e00 100644 --- a/mysql-test/t/subselect_sj_mat.test +++ b/mysql-test/t/subselect_sj_mat.test @@ -1750,5 +1750,25 @@ WHERE ( alias2.c2, alias1.c1 ) IN ( SELECT c4, c3 FROM t2 ) AND alias1.c1 IN ( S DROP TABLE t1,t2; set join_cache_level=@tmp_mdev5056; +--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 5.5 tests |