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MDEV-9635: Server crashes in part_of_refkey or assertion `!created && key_to_save < (int)s->keys' failed in TABLE::use_index(int) or with join_cache_level>2

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Do not try to create index where ref is for hash join.
This commit is contained in:
Oleksandr Byelkin 2017-02-28 17:39:28 +01:00
parent 5a0fff50f8
commit 75f6067e89
3 changed files with 36 additions and 1 deletions
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15
mysql-test/r/subselect_innodb.result
View file

@ -454,3 +454,18 @@ HAVING SQ2_alias1 . col_int_key >= 7
1
drop table t1;
set optimizer_switch=@subselect_innodb_tmp;
#
# MDEV-9635:Server crashes in part_of_refkey or assertion
# `!created && key_to_save < (int)s->keys' failed in
# TABLE::use_index(int) or with join_cache_level>2
#
SET join_cache_level=3;
CREATE TABLE t1 (f1 VARCHAR(1024)) ENGINE=InnoDB;
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2 (f2 VARCHAR(4)) ENGINE=InnoDB;
INSERT INTO t2 VALUES ('foo'),('bar');
SELECT * FROM v1, t2 WHERE ( f1, f2 ) IN ( SELECT f1, f1 FROM t1 );
f1 f2
set join_cache_level = default;
drop view v1;
drop table t1,t2;

20
mysql-test/t/subselect_innodb.test
View file

@ -433,3 +433,23 @@ drop table t1;
set optimizer_switch=@subselect_innodb_tmp;
--echo #
--echo # MDEV-9635:Server crashes in part_of_refkey or assertion
--echo # `!created && key_to_save < (int)s->keys' failed in
--echo # TABLE::use_index(int) or with join_cache_level>2
--echo #
SET join_cache_level=3;
CREATE TABLE t1 (f1 VARCHAR(1024)) ENGINE=InnoDB;
CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1;
CREATE TABLE t2 (f2 VARCHAR(4)) ENGINE=InnoDB;
INSERT INTO t2 VALUES ('foo'),('bar');
SELECT * FROM v1, t2 WHERE ( f1, f2 ) IN ( SELECT f1, f1 FROM t1 );
set join_cache_level = default;
drop view v1;
drop table t1,t2;

2
sql/sql_select.cc
View file

@ -9422,7 +9422,7 @@ void JOIN::drop_unused_derived_keys()
continue;
if (!table->pos_in_table_list->is_materialized_derived())
continue;
if (table->max_keys > 1)
if (table->max_keys > 1 && !tab->is_ref_for_hash_join())
table->use_index(tab->ref.key);
if (table->s->keys)
{