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| author | Igor Babaev <igor@askmonty.org> | 2010-10-24 14:22:01 -0700 |
|---|---|---|
| committer | Igor Babaev <igor@askmonty.org> | 2010-10-24 14:22:01 -0700 |
| commit | 0c53cd1ec9cbc50daf5b8d7c9f11e10f4d1fe564 (patch) | |
| tree | d6cfb6b0f459e9bf46d68e3b72b66f98a1330945 /mysql-test/t | |
| parent | de69dbae0cf63f3bc4fae96fac84bfff17596969 (diff) | |
| download | mariadb-git-0c53cd1ec9cbc50daf5b8d7c9f11e10f4d1fe564.tar.gz | |
Fixed LP bug #664508.
When join buffers are employed no index scan for the first
table with grouping columns can be used.
mysql-test/r/join_cache.result:
Added a test case for bug #664508.
Sorted results for some other test cases.
mysql-test/t/join_cache.test:
Added a test case for bug #664508.
Sorted results for some other test cases.
Diffstat (limited to 'mysql-test/t')
| -rwxr-xr-x | mysql-test/t/join_cache.test | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/mysql-test/t/join_cache.test b/mysql-test/t/join_cache.test index d83646b5e99..010abed3c2b 100755 --- a/mysql-test/t/join_cache.test +++ b/mysql-test/t/join_cache.test @@ -699,6 +699,7 @@ EXPLAIN SELECT City.Name, Country.Name FROM City,Country WHERE City.Country=Country.Code AND City.Population > 3000000; +--sorted_result SELECT City.Name, Country.Name FROM City,Country WHERE City.Country=Country.Code AND City.Population > 3000000; @@ -2173,6 +2174,7 @@ EXPLAIN SELECT t1.i, t1.d, t1.v, t2.i, t2.d, t2.t, t2.v FROM t1,t2,t3 WHERE t3.u <='a' AND t2.j < 5 AND t3.v = t2.u; +--sorted_result SELECT t1.i, t1.d, t1.v, t2.i, t2.d, t2.t, t2.v FROM t1,t2,t3 WHERE t3.u <='a' AND t2.j < 5 AND t3.v = t2.u; @@ -2181,5 +2183,65 @@ DROP TABLE t1,t2,t3; SET SESSION join_cache_level=DEFAULT; SET SESSION join_buffer_size=DEFAULT; + +--echo # +--echo # Bug #664508: 'Simple' GROUP BY + ORDER BY +--echo # when join buffers are used +--echo # + +CREATE TABLE t1 ( + pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, + PRIMARY KEY (pk), INDEX idx1(i), INDEX idx2 (v,i) +); +INSERT INTO t1 VALUES + (10,8,'v'), (11,8,'f'), (12,5,'v'), (13,8,'s'), (14,8,'a'), + (15,6,'p'), (16,7,'z'), (17,2,'a'), (18,5,'h'), (19,7,'h'), + (25,3,'m'), (26,5,'z'), (27,9,'n'), (28,1,'d'), (29,107,'a'); + +CREATE TABLE t2 ( + pk int NOT NULL, i int NOT NULL, v varchar(1) NOT NULL, + PRIMARY KEY (pk), INDEX idx1(i), INDEX idx2(v,i) +); +INSERT INTO t2 VALUES + (10,8,'v'), (11,8,'f'), (12,5,'v'), (13,8,'s'), (14,8,'a'), + (15,6,'p'), (16,7,'z'), (17,2,'a'), (18,5,'h'), (19,7,'h'), + (20,2,'v'), (21,9,'v'), (22,142,'b'), (23,3,'y'), (24,0,'v'), + (25,3,'m'), (26,5,'z'), (27,9,'n'), (28,1,'d'), (29,107,'a'); + +CREATE TABLE t3 ( + pk int NOT NULL, i int(11) NOT NULL, v varchar(1) NOT NULL, + PRIMARY KEY (pk), INDEX idx1(i), INDEX idx2(v,i) +); +INSERT INTO t3 VALUES + (1,9,'x'), (2,5,'g'), (3,1,'o'), (4,0,'g'), (5,1,'v'), + (6,190,'m'), (7,6,'x'), (8,3,'c'), (9,4,'z'), (10,3,'i'), + (11,186,'x'), (12,1,'g'), (13,8,'q'), (14,226,'m'), (15,133,'p'), + (16,6,'e'), (17,3,'t'), (18,8,'j'), (19,5,'h'), (20,7,'w'); + +SET SESSION join_cache_level=1; +EXPLAIN +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v + GROUP BY t2.v ORDER BY t1.pk,t2.v; +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v + GROUP BY t2.v ORDER BY t1.pk,t2.v; + +SET SESSION join_cache_level=6; +EXPLAIN +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v + GROUP BY t2.v ORDER BY t1.pk,t2.v; +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v + GROUP BY t2.v ORDER BY t1.pk,t2.v; + +SET SESSION join_cache_level=4; +EXPLAIN +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v + GROUP BY t2.v ORDER BY t1.pk,t2.v; +SELECT t2.v FROM t1, t2, t3 WHERE t3.v <> t2.v AND t3.pk = t2.i AND t1.v = t3.v + GROUP BY t2.v ORDER BY t1.pk,t2.v; + +DROP TABLE t1,t2,t3; + +SET SESSION join_cache_level=DEFAULT; + # this must be the last command in the file set @@optimizer_switch=@save_optimizer_switch; |