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Back-ported test cases for bugs #53060, #53305, #50358, #49453 from subquery_sj

Browse source 
of mysql-5.6 code line. The bugs could not be reproduced in the latest release
of mariadb-5.3 as they were fixed either when the code of subquery optimization
was back-ported from mysql-6.0 or later when some other bugs were fixed.
This commit is contained in:
Igor Babaev 2012-01-21 20:58:23 -08:00
parent 9f60aa27f7
commit 80009f5862
5 changed files with 338 additions and 0 deletions
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97
mysql-test/r/join_cache.result
View file

@ -5389,4 +5389,101 @@ x 5 5 4
SET join_cache_level = DEFAULT;
SET optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1,t2,t3,t4;
#
# Bug#53305 Duplicate weedout + join buffer (join cache --level=7,8)
#
create table t1 (uid int, fid int, index(uid));
insert into t1 values
(1,1), (1,2), (1,3), (1,4),
(2,5), (2,6), (2,7), (2,8),
(3,1), (3,2), (3,9);
create table t2 (uid int primary key, name varchar(128), index(name));
insert into t2 values
(1, "A"), (2, "B"), (3, "C"), (4, "D"), (5, "E"),
(6, "F"), (7, "G"), (8, "H"), (9, "I");
create table t3 (uid int, fid int, index(uid));
insert into t3 values
(1,1), (1,2), (1,3),(1,4),
(2,5), (2,6), (2,7), (2,8),
(3,1), (3,2), (3,9);
set @tmp_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch='semijoin=on';
set optimizer_switch='materialization=off';
set optimizer_switch='loosescan=off,firstmatch=off';
set optimizer_switch='mrr_sort_keys=off';
set join_cache_level=7;
create table t4 (uid int primary key, name varchar(128), index(name));
insert into t4 values
(1, "A"), (2, "B"), (3, "C"), (4, "D"), (5, "E"),
(6, "F"), (7, "G"), (8, "H"), (9, "I");
explain select name from t2, t1
where t1.uid in (select t4.uid from t4, t3 where t3.uid=1 and t4.uid=t3.fid)
and t2.uid=t1.fid;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ref uid uid 5 const 4 Using where; Start temporary
1 PRIMARY t4 eq_ref PRIMARY PRIMARY 4 test.t3.fid 1 Using index
1 PRIMARY t1 ALL uid NULL NULL NULL 11 Using where; End temporary; Using join buffer (flat, BNL join)
1 PRIMARY t2 eq_ref PRIMARY PRIMARY 4 test.t1.fid 1 Using join buffer (flat, BKAH join); Rowid-ordered scan
select name from t2, t1
where t1.uid in (select t4.uid from t4, t3 where t3.uid=1 and t4.uid=t3.fid)
and t2.uid=t1.fid;
name
A
A
B
B
C
D
E
F
G
H
I
set join_cache_level = default;
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2,t3,t4;
#
# Bug#50358 - semijoin execution of subquery with outerjoin
# emplying join buffer
#
CREATE TABLE t1 (i int);
CREATE TABLE t2 (i int);
CREATE TABLE t3 (i int);
INSERT INTO t1 VALUES (1), (2);
INSERT INTO t2 VALUES (6);
INSERT INTO t3 VALUES (1), (2);
set @tmp_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch='semijoin=on';
set optimizer_switch='materialization=on';
set join_cache_level=0;
EXPLAIN
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 1 Using where
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
i
1
2
set join_cache_level=2;
EXPLAIN
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 2
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join)
2 MATERIALIZED t3 ALL NULL NULL NULL NULL 2
2 MATERIALIZED t2 ALL NULL NULL NULL NULL 1 Using where; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
i
1
2
set join_cache_level = default;
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1,t2,t3;
set @@optimizer_switch=@save_optimizer_switch;

54
mysql-test/r/subselect_sj.result
View file

@ -1231,6 +1231,60 @@ IN (SELECT t3.pk, t3.pk FROM t2 LEFT JOIN t3 ON t3.varchar_key)
AND pk = 9;
datetime_key
DROP TABLE t1, t2, t3;
#
# BUG#53060: LooseScan semijoin strategy does not return all rows
#
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=off';
set optimizer_switch='firstmatch=off,loosescan=on';
CREATE TABLE t1 (i INTEGER);
INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
CREATE TABLE t2 (i INTEGER, j INTEGER, KEY k(i, j));
INSERT INTO t2 VALUES (1, 0), (1, 1), (2, 0), (2, 1);
EXPLAIN
SELECT * FROM t1 WHERE (i) IN (SELECT i FROM t2 where j > 0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index k k 10 NULL 4 Using where; Using index; LooseScan
1 PRIMARY t1 ALL NULL NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE (i) IN (SELECT i FROM t2 where j > 0);
i
1
2
DROP TABLE t1, t2;
set optimizer_switch=@save_optimizer_switch;
#
# BUG#49453: re-execution of prepared statement with view
# and semijoin crashes
#
CREATE TABLE t1 (city VARCHAR(50), country_id INT);
CREATE TABLE t2 (country_id INT, country VARCHAR(50));
INSERT INTO t1 VALUES
('Batna',2),('Bchar',2),('Skikda',2),('Tafuna',3),('Algeria',2) ;
INSERT INTO t2 VALUES (2,'Algeria'),(2,'AlgeriaDup'),(3,'XAmerican Samoa');
CREATE VIEW v1 AS
SELECT country_id as vf_country_id
FROM t2
WHERE LEFT(country,1) = "A";
PREPARE stmt FROM "
SELECT city, country_id
FROM t1
WHERE country_id IN (SELECT vf_country_id FROM v1);
";
EXECUTE stmt;
city country_id
Batna 2
Bchar 2
Skikda 2
Algeria 2
EXECUTE stmt;
city country_id
Batna 2
Bchar 2
Skikda 2
Algeria 2
DROP TABLE t1,t2;
DROP VIEW v1;
#
# BUG#784723: Wrong result with semijoin + nested subqueries in maria-5.3
#

54
mysql-test/r/subselect_sj_jcl6.result
View file

@ -1244,6 +1244,60 @@ IN (SELECT t3.pk, t3.pk FROM t2 LEFT JOIN t3 ON t3.varchar_key)
AND pk = 9;
datetime_key
DROP TABLE t1, t2, t3;
#
# BUG#53060: LooseScan semijoin strategy does not return all rows
#
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=off';
set optimizer_switch='firstmatch=off,loosescan=on';
CREATE TABLE t1 (i INTEGER);
INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
CREATE TABLE t2 (i INTEGER, j INTEGER, KEY k(i, j));
INSERT INTO t2 VALUES (1, 0), (1, 1), (2, 0), (2, 1);
EXPLAIN
SELECT * FROM t1 WHERE (i) IN (SELECT i FROM t2 where j > 0);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index k k 10 NULL 4 Using where; Using index; LooseScan
1 PRIMARY t1 ALL NULL NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join)
SELECT * FROM t1 WHERE (i) IN (SELECT i FROM t2 where j > 0);
i
1
2
DROP TABLE t1, t2;
set optimizer_switch=@save_optimizer_switch;
#
# BUG#49453: re-execution of prepared statement with view
# and semijoin crashes
#
CREATE TABLE t1 (city VARCHAR(50), country_id INT);
CREATE TABLE t2 (country_id INT, country VARCHAR(50));
INSERT INTO t1 VALUES
('Batna',2),('Bchar',2),('Skikda',2),('Tafuna',3),('Algeria',2) ;
INSERT INTO t2 VALUES (2,'Algeria'),(2,'AlgeriaDup'),(3,'XAmerican Samoa');
CREATE VIEW v1 AS
SELECT country_id as vf_country_id
FROM t2
WHERE LEFT(country,1) = "A";
PREPARE stmt FROM "
SELECT city, country_id
FROM t1
WHERE country_id IN (SELECT vf_country_id FROM v1);
";
EXECUTE stmt;
city country_id
Batna 2
Bchar 2
Skikda 2
Algeria 2
EXECUTE stmt;
city country_id
Batna 2
Bchar 2
Skikda 2
Algeria 2
DROP TABLE t1,t2;
DROP VIEW v1;
#
# BUG#784723: Wrong result with semijoin + nested subqueries in maria-5.3
#

82
mysql-test/t/join_cache.test
View file

@ -3423,5 +3423,87 @@ SET optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1,t2,t3,t4;
--echo #
--echo # Bug#53305 Duplicate weedout + join buffer (join cache --level=7,8)
--echo #
create table t1 (uid int, fid int, index(uid));
insert into t1 values
(1,1), (1,2), (1,3), (1,4),
(2,5), (2,6), (2,7), (2,8),
(3,1), (3,2), (3,9);
create table t2 (uid int primary key, name varchar(128), index(name));
insert into t2 values
(1, "A"), (2, "B"), (3, "C"), (4, "D"), (5, "E"),
(6, "F"), (7, "G"), (8, "H"), (9, "I");
create table t3 (uid int, fid int, index(uid));
insert into t3 values
(1,1), (1,2), (1,3),(1,4),
(2,5), (2,6), (2,7), (2,8),
(3,1), (3,2), (3,9);
set @tmp_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch='semijoin=on';
set optimizer_switch='materialization=off';
set optimizer_switch='loosescan=off,firstmatch=off';
set optimizer_switch='mrr_sort_keys=off';
set join_cache_level=7;
create table t4 (uid int primary key, name varchar(128), index(name));
insert into t4 values
(1, "A"), (2, "B"), (3, "C"), (4, "D"), (5, "E"),
(6, "F"), (7, "G"), (8, "H"), (9, "I");
explain select name from t2, t1
where t1.uid in (select t4.uid from t4, t3 where t3.uid=1 and t4.uid=t3.fid)
and t2.uid=t1.fid;
--sorted_result
select name from t2, t1
where t1.uid in (select t4.uid from t4, t3 where t3.uid=1 and t4.uid=t3.fid)
and t2.uid=t1.fid;
set join_cache_level = default;
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2,t3,t4;
--echo #
--echo # Bug#50358 - semijoin execution of subquery with outerjoin
--echo # emplying join buffer
--echo #
CREATE TABLE t1 (i int);
CREATE TABLE t2 (i int);
CREATE TABLE t3 (i int);
INSERT INTO t1 VALUES (1), (2);
INSERT INTO t2 VALUES (6);
INSERT INTO t3 VALUES (1), (2);
set @tmp_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch='semijoin=on';
set optimizer_switch='materialization=on';
set join_cache_level=0;
EXPLAIN
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
set join_cache_level=2;
EXPLAIN
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
SELECT * FROM t1 WHERE t1.i IN
(SELECT t3.i FROM t3 LEFT JOIN t2 ON t2.i=t3.i);
set join_cache_level = default;
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1,t2,t3;
# this must be the last command in the file
set @@optimizer_switch=@save_optimizer_switch;

51
mysql-test/t/subselect_sj.test
View file

@ -1136,6 +1136,57 @@ WHERE (int_nokey, pk)
DROP TABLE t1, t2, t3;
--echo #
--echo # BUG#53060: LooseScan semijoin strategy does not return all rows
--echo #
set @save_optimizer_switch=@@optimizer_switch;
set optimizer_switch='semijoin=on,materialization=off';
set optimizer_switch='firstmatch=off,loosescan=on';
CREATE TABLE t1 (i INTEGER);
INSERT INTO t1 VALUES (1), (2), (3), (4), (5);
CREATE TABLE t2 (i INTEGER, j INTEGER, KEY k(i, j));
INSERT INTO t2 VALUES (1, 0), (1, 1), (2, 0), (2, 1);
EXPLAIN
SELECT * FROM t1 WHERE (i) IN (SELECT i FROM t2 where j > 0);
SELECT * FROM t1 WHERE (i) IN (SELECT i FROM t2 where j > 0);
DROP TABLE t1, t2;
set optimizer_switch=@save_optimizer_switch;
--echo #
--echo # BUG#49453: re-execution of prepared statement with view
--echo # and semijoin crashes
--echo #
CREATE TABLE t1 (city VARCHAR(50), country_id INT);
CREATE TABLE t2 (country_id INT, country VARCHAR(50));
INSERT INTO t1 VALUES
('Batna',2),('Bchar',2),('Skikda',2),('Tafuna',3),('Algeria',2) ;
INSERT INTO t2 VALUES (2,'Algeria'),(2,'AlgeriaDup'),(3,'XAmerican Samoa');
CREATE VIEW v1 AS
SELECT country_id as vf_country_id
FROM t2
WHERE LEFT(country,1) = "A";
PREPARE stmt FROM "
SELECT city, country_id
FROM t1
WHERE country_id IN (SELECT vf_country_id FROM v1);
";
--echo
EXECUTE stmt;
EXECUTE stmt;
DROP TABLE t1,t2;
DROP VIEW v1;
--echo #
--echo # BUG#784723: Wrong result with semijoin + nested subqueries in maria-5.3
--echo #