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MDEV-7828 Assertion `key_read == 0' failed in TABLE::enable_keyread with SELECT SQ and WHERE SQ

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already fixed by a7ed4644a6.
just add a test case,
This commit is contained in:
Sergei Golubchik 2017-07-12 13:46:15 +02:00
commit d2e66a6f19
6 changed files with 50 additions and 0 deletions
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8
mysql-test/r/subselect.result
View file

@ -7138,3 +7138,11 @@ SELECT ( SELECT MAX(f1) FROM t2 ) FROM t1;
ERROR 21000: Subquery returns more than 1 row
drop view v1;
drop table t1,t2;
CREATE TABLE t1 (f1 INT, KEY(f1)) ENGINE=MyISAM;
INSERT t1 VALUES (4),(8);
CREATE TABLE t2 (f2 INT, KEY(f2)) ENGINE=MyISAM;
INSERT t2 VALUES (6),(9);
SELECT (SELECT MAX(sq.f2) FROM t1) FROM (SELECT * FROM t2) AS sq WHERE f2 = 2;
(SELECT MAX(sq.f2) FROM t1)
NULL
drop table t1, t2;

8
mysql-test/r/subselect_no_mat.result
View file

@ -7135,6 +7135,14 @@ SELECT ( SELECT MAX(f1) FROM t2 ) FROM t1;
ERROR 21000: Subquery returns more than 1 row
drop view v1;
drop table t1,t2;
CREATE TABLE t1 (f1 INT, KEY(f1)) ENGINE=MyISAM;
INSERT t1 VALUES (4),(8);
CREATE TABLE t2 (f2 INT, KEY(f2)) ENGINE=MyISAM;
INSERT t2 VALUES (6),(9);
SELECT (SELECT MAX(sq.f2) FROM t1) FROM (SELECT * FROM t2) AS sq WHERE f2 = 2;
(SELECT MAX(sq.f2) FROM t1)
NULL
drop table t1, t2;
set optimizer_switch=default;
select @@optimizer_switch like '%materialization=on%';
@@optimizer_switch like '%materialization=on%'

8
mysql-test/r/subselect_no_opts.result
View file

@ -7133,4 +7133,12 @@ SELECT ( SELECT MAX(f1) FROM t2 ) FROM t1;
ERROR 21000: Subquery returns more than 1 row
drop view v1;
drop table t1,t2;
CREATE TABLE t1 (f1 INT, KEY(f1)) ENGINE=MyISAM;
INSERT t1 VALUES (4),(8);
CREATE TABLE t2 (f2 INT, KEY(f2)) ENGINE=MyISAM;
INSERT t2 VALUES (6),(9);
SELECT (SELECT MAX(sq.f2) FROM t1) FROM (SELECT * FROM t2) AS sq WHERE f2 = 2;
(SELECT MAX(sq.f2) FROM t1)
NULL
drop table t1, t2;
set @optimizer_switch_for_subselect_test=null;

8
mysql-test/r/subselect_no_scache.result
View file

@ -7144,6 +7144,14 @@ SELECT ( SELECT MAX(f1) FROM t2 ) FROM t1;
ERROR 21000: Subquery returns more than 1 row
drop view v1;
drop table t1,t2;
CREATE TABLE t1 (f1 INT, KEY(f1)) ENGINE=MyISAM;
INSERT t1 VALUES (4),(8);
CREATE TABLE t2 (f2 INT, KEY(f2)) ENGINE=MyISAM;
INSERT t2 VALUES (6),(9);
SELECT (SELECT MAX(sq.f2) FROM t1) FROM (SELECT * FROM t2) AS sq WHERE f2 = 2;
(SELECT MAX(sq.f2) FROM t1)
NULL
drop table t1, t2;
set optimizer_switch=default;
select @@optimizer_switch like '%subquery_cache=on%';
@@optimizer_switch like '%subquery_cache=on%'

8
mysql-test/r/subselect_no_semijoin.result
View file

@ -7133,5 +7133,13 @@ SELECT ( SELECT MAX(f1) FROM t2 ) FROM t1;
ERROR 21000: Subquery returns more than 1 row
drop view v1;
drop table t1,t2;
CREATE TABLE t1 (f1 INT, KEY(f1)) ENGINE=MyISAM;
INSERT t1 VALUES (4),(8);
CREATE TABLE t2 (f2 INT, KEY(f2)) ENGINE=MyISAM;
INSERT t2 VALUES (6),(9);
SELECT (SELECT MAX(sq.f2) FROM t1) FROM (SELECT * FROM t2) AS sq WHERE f2 = 2;
(SELECT MAX(sq.f2) FROM t1)
NULL
drop table t1, t2;
set @optimizer_switch_for_subselect_test=null;
set @join_cache_level_for_subselect_test=NULL;

10
mysql-test/t/subselect.test
View file

@ -6023,3 +6023,13 @@ SELECT ( SELECT MAX(f1) FROM t2 ) FROM t1;
drop view v1;
drop table t1,t2;
#
# MDEV-7828 Assertion `key_read == 0' failed in TABLE::enable_keyread with SELECT SQ and WHERE SQ
#
CREATE TABLE t1 (f1 INT, KEY(f1)) ENGINE=MyISAM;
INSERT t1 VALUES (4),(8);
CREATE TABLE t2 (f2 INT, KEY(f2)) ENGINE=MyISAM;
INSERT t2 VALUES (6),(9);
SELECT (SELECT MAX(sq.f2) FROM t1) FROM (SELECT * FROM t2) AS sq WHERE f2 = 2;
drop table t1, t2;