mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 12:02:42 +01:00
318 lines
8.6 KiB
Text
318 lines
8.6 KiB
Text
#
|
|
# MDEV-6434: Wrong result (extra rows) with ORDER BY, multiple-column index, InnoDB
|
|
#
|
|
CREATE TABLE t1 (a INT, b INT, c INT, d TEXT, KEY idx(a,b,c)) ENGINE=InnoDB
|
|
STATS_PERSISTENT=0;
|
|
INSERT INTO t1 (a,c) VALUES
|
|
(8, 9),(8, 10),(13, 15),(16, 17),(16, 18),(16, 19),(20, 21),
|
|
(20, 22),(20, 24),(20, 25),(20, 26),(20, 27),(20, 28);
|
|
SELECT * FROM t1 WHERE a = 8 AND (b = 1 OR b IS NULL) ORDER BY c;
|
|
a b c d
|
|
8 NULL 9 NULL
|
|
8 NULL 10 NULL
|
|
DROP TABLE t1;
|
|
#
|
|
# MDEV-9457: Poor query plan chosen for ORDER BY query by a recent 10.1
|
|
#
|
|
create table t1 (
|
|
pk int primary key,
|
|
key1 int,
|
|
key2 int,
|
|
col1 char(255),
|
|
key(key1),
|
|
key(key2)
|
|
) engine=innodb stats_persistent=0;
|
|
insert into t1
|
|
select seq,seq,seq,repeat('abcd', 63) from seq_0_to_9999;
|
|
# The following must NOT use 'index' on PK.
|
|
# It should use index_merge(key1,key2) + filesort
|
|
explain
|
|
select *
|
|
from t1
|
|
where key1<3 or key2<3
|
|
order by pk;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge key1,key2 key1,key2 5,5 NULL # Using sort_union(key1,key2); Using where; Using filesort
|
|
explain
|
|
select *
|
|
from t1
|
|
where key1<3 or key2<3;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index_merge key1,key2 key1,key2 5,5 NULL # Using sort_union(key1,key2); Using where
|
|
drop table t1;
|
|
#
|
|
# MDEV-18094: Query with order by limit picking index scan over filesort
|
|
#
|
|
create table t0 (a int);
|
|
INSERT INTO t0 VALUES (0),(0),(0),(0),(2),(0),(0),(1),(1),(0);
|
|
CREATE TABLE t1 (
|
|
a int(11),
|
|
b int(11),
|
|
c int(11),
|
|
KEY a_c (a,c),
|
|
KEY a_b (a,b)
|
|
) ENGINE=InnoDB;
|
|
insert into t1 select A.a , B.a, C.a from t0 A, t0 B, t0 C;
|
|
select count(*) from t1;
|
|
count(*)
|
|
1000
|
|
select count(*) from t1 where a=1;
|
|
count(*)
|
|
200
|
|
select count(*) from t1 where a=1 and c=2;
|
|
count(*)
|
|
20
|
|
# should use ref access
|
|
explain select a,b,c from t1 where a=1 and c=2 order by b;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref a_c,a_b a_c 10 const,const 20 Using where; Using filesort
|
|
# all should use range access
|
|
explain select a,b,c from t1 where a=1 and c=2 order by b limit 10;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref a_c,a_b a_c 10 const,const 20 Using where; Using filesort
|
|
explain select a,b,c from t1 where a=1 and c=2 order by b limit 300;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref a_c,a_b a_c 10 const,const 20 Using where; Using filesort
|
|
explain select a,b,c from t1 where a=1 and c=2 order by b limit 1000;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ref a_c,a_b a_c 10 const,const 20 Using where; Using filesort
|
|
drop table t1,t0;
|
|
# Start of 10.2 tests
|
|
#
|
|
# MDEV-14071: wrong results with orderby_uses_equalities=on
|
|
# (duplicate of MDEV-13994)
|
|
#
|
|
CREATE TABLE t1 (i int, j int, z int,PRIMARY KEY (i,j), KEY (z)) ENGINE=InnoDB
|
|
STATS_PERSISTENT=0;
|
|
CREATE TABLE t2 (i int, j int, PRIMARY KEY (i,j)) ENGINE=InnoDB
|
|
STATS_PERSISTENT=0;
|
|
CREATE TABLE t3 (j int, n varchar(5), PRIMARY KEY (j)) ENGINE=InnoDB
|
|
STATS_PERSISTENT=0;
|
|
INSERT INTO t1 VALUES
|
|
(127,0,1),(188,0,1),(206,0,1),(218,0,1),(292,0,1),(338,0,1),(375,0,1),
|
|
(381,0,1),(409,0,1),(466,0,1),(469,0,1),(498,0,1),(656,0,1);
|
|
INSERT INTO t1 VALUES
|
|
(77,4,0),(86,7,0),(96,6,0),(96,7,0),(99,9,0),(99,10,0),(99,11,0),(104,4,0),
|
|
(106,5,0),(148,6,0),(177,6,0),(181,5,0),(188,8,0),(218,8,0),(253,7,0),
|
|
(268,4,0),(338,4,0),(409,7,0),(466,8,0),(469,8,0),(498,8,0),(656,8,0);
|
|
INSERT INTO t2 VALUES
|
|
(127,7),(188,8),(188,9),(206,6),(218,8),(218,9),(292,7),(338,4),(338,5),
|
|
(375,6),(381,5),(409,7),(409,8),(466,8),(466,9),(469,8),(469,9),(498,8),
|
|
(498,9),(656,8),(656,9);
|
|
INSERT INTO t3 VALUES
|
|
(4,'four'),(5,'five'),(6,'six'),(7,'seven'),(8,'eight'),(9,'nine');
|
|
SET @save_optimizer_switch=@@optimizer_switch;
|
|
SET optimizer_switch='orderby_uses_equalities=off';
|
|
SELECT i,n
|
|
FROM t1 INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
|
|
WHERE i IN (SELECT i FROM t1 WHERE z=1) AND z=0 ORDER BY i;
|
|
i n
|
|
188 eight
|
|
218 eight
|
|
338 four
|
|
409 seven
|
|
466 eight
|
|
469 eight
|
|
498 eight
|
|
656 eight
|
|
SELECT i,n
|
|
FROM t1 x INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
|
|
WHERE EXISTS (SELECT * FROM t1 WHERE i=x.i AND z=1) AND z=0 ORDER BY i;
|
|
i n
|
|
188 eight
|
|
218 eight
|
|
338 four
|
|
409 seven
|
|
466 eight
|
|
469 eight
|
|
498 eight
|
|
656 eight
|
|
SET optimizer_switch='orderby_uses_equalities=on';
|
|
SELECT i,n
|
|
FROM t1 INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
|
|
WHERE i IN (SELECT i FROM t1 WHERE z=1) AND z=0 ORDER BY i;
|
|
i n
|
|
188 eight
|
|
218 eight
|
|
338 four
|
|
409 seven
|
|
466 eight
|
|
469 eight
|
|
498 eight
|
|
656 eight
|
|
SELECT i,n
|
|
FROM t1 x INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
|
|
WHERE EXISTS (SELECT * FROM t1 WHERE i=x.i AND z=1) AND z=0 ORDER BY i;
|
|
i n
|
|
188 eight
|
|
218 eight
|
|
338 four
|
|
409 seven
|
|
466 eight
|
|
469 eight
|
|
498 eight
|
|
656 eight
|
|
set optimizer_switch= @save_optimizer_switch;
|
|
DROP TABLE t1,t2,t3;
|
|
#
|
|
# MDEV-25858: Query results are incorrect when indexes are added
|
|
#
|
|
CREATE TABLE t1 (id int NOT NULL PRIMARY KEY) engine=innodb
|
|
STATS_PERSISTENT=0;
|
|
insert into t1 values (1),(2),(3);
|
|
CREATE TABLE t2 (
|
|
id int NOT NULL PRIMARY KEY,
|
|
id2 int NOT NULL,
|
|
d1 datetime,
|
|
d2 timestamp NOT NULL,
|
|
KEY id2 (id2)
|
|
) engine=innodb stats_persistent=0;
|
|
insert into t2 values
|
|
(1,2,'2019-03-05 00:00:00','2019-03-06 00:00:00'),
|
|
(2,3,'2019-03-05 00:00:00','2019-03-06 00:00:00'),
|
|
(3,3,'2019-03-06 00:00:00','2019-03-05 00:00:00');
|
|
analyze table t1,t2 persistent for all;
|
|
Table Op Msg_type Msg_text
|
|
test.t1 analyze status Engine-independent statistics collected
|
|
test.t1 analyze status OK
|
|
test.t2 analyze status Engine-independent statistics collected
|
|
test.t2 analyze status OK
|
|
select
|
|
t1.id,t2.id
|
|
from
|
|
t1 left join
|
|
t2 on t2.id2 = t1.id and
|
|
t2.id = (select dd.id
|
|
from t2 dd
|
|
where
|
|
dd.id2 = t1.id and
|
|
d1 > '2019-02-06 00:00:00'
|
|
order by
|
|
dd.d1 desc, dd.d2 desc, dd.id desc limit 1
|
|
);
|
|
id id
|
|
1 NULL
|
|
2 1
|
|
3 3
|
|
create index for_latest_sort on t2 (d1, d2, id);
|
|
analyze table t2 persistent for all;
|
|
Table Op Msg_type Msg_text
|
|
test.t2 analyze status Engine-independent statistics collected
|
|
test.t2 analyze status OK
|
|
select
|
|
t1.id,t2.id
|
|
from
|
|
t1 left join
|
|
t2 on t2.id2 = t1.id and
|
|
t2.id = (select dd.id
|
|
from t2 dd
|
|
where
|
|
dd.id2 = t1.id and
|
|
d1 > '2019-02-06 00:00:00'
|
|
order by
|
|
dd.d1 desc, dd.d2 desc, dd.id desc limit 1
|
|
);
|
|
id id
|
|
1 NULL
|
|
2 1
|
|
3 3
|
|
# Now, same as above but use a DESC index
|
|
CREATE TABLE t3 (
|
|
id int NOT NULL PRIMARY KEY,
|
|
id2 int NOT NULL,
|
|
d1 datetime,
|
|
d2 timestamp NOT NULL,
|
|
KEY id2 (id2)
|
|
) engine=innodb;
|
|
insert into t3 values
|
|
(1,2,'2019-03-05 00:00:00','2019-03-06 00:00:00'),
|
|
(2,3,'2019-03-05 00:00:00','2019-03-06 00:00:00'),
|
|
(3,3,'2019-03-06 00:00:00','2019-03-05 00:00:00');
|
|
create index for_latest_sort on t3 (d1 desc, d2 desc, id desc);
|
|
select
|
|
t1.id,t3.id
|
|
from
|
|
t1 left join
|
|
t3 on t3.id2 = t1.id and
|
|
t3.id = (select dd.id
|
|
from t3 dd
|
|
where
|
|
dd.id2 = t1.id and
|
|
d1 > '2019-02-06 00:00:00'
|
|
order by
|
|
dd.d1 desc, dd.d2 desc, dd.id desc limit 1
|
|
);
|
|
id id
|
|
1 NULL
|
|
2 1
|
|
3 3
|
|
#
|
|
# MDEV-27270: Wrong query plan with Range Checked for Each Record and ORDER BY ... LIMIT
|
|
#
|
|
# This must NOT have "Range checked for each record" without any
|
|
# provisions to produce rows in the required ordering:
|
|
explain
|
|
select
|
|
t1.id,t2.id
|
|
from
|
|
t1 left join
|
|
t2 on t2.id2 = t1.id and
|
|
t2.id = (select dd.id
|
|
from t2 dd
|
|
where
|
|
dd.id2 = t1.id and
|
|
d1 > '2019-02-06 00:00:00'
|
|
order by
|
|
dd.d1, dd.d2, dd.id limit 1
|
|
);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL #
|
|
1 PRIMARY t2 eq_ref PRIMARY,id2 id2 8 test.t1.id,func # Using where; Using index
|
|
2 DEPENDENT SUBQUERY dd ref id2,for_latest_sort id2 4 test.t1.id # Using where; Using filesort
|
|
drop table t1,t2,t3;
|
|
# End of 10.2 tests
|
|
#
|
|
# MDEV-26938 Support descending indexes internally in InnoDB
|
|
#
|
|
create table t1 (a int, b int, c int, key r (a desc, b asc));
|
|
insert t1 select seq % 10, seq div 10, seq from seq_1_to_55;
|
|
insert t1 values (NULL, NULL, NULL), (9, NULL, NULL);
|
|
explain select * from t1 force index(r) order by a,b limit 20;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 57 Using filesort
|
|
explain select * from t1 force index(r) order by a desc,b limit 20;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t1 index NULL r 10 NULL 20
|
|
select * from t1 force index(r) order by a desc,b limit 20;
|
|
a b c
|
|
9 NULL NULL
|
|
9 0 9
|
|
9 1 19
|
|
9 2 29
|
|
9 3 39
|
|
9 4 49
|
|
8 0 8
|
|
8 1 18
|
|
8 2 28
|
|
8 3 38
|
|
8 4 48
|
|
7 0 7
|
|
7 1 17
|
|
7 2 27
|
|
7 3 37
|
|
7 4 47
|
|
6 0 6
|
|
6 1 16
|
|
6 2 26
|
|
6 3 36
|
|
drop table t1;
|
|
#
|
|
# MDEV-31116: SIGSEGV in test_if_skip_sort_order|JOIN::optimize_stage2
|
|
#
|
|
CREATE TABLE t1 (a BINARY (2),b BINARY (1),KEY(a)) ENGINE=innodb;
|
|
INSERT INTO t1 select 'ab', NULL from seq_1_to_14;
|
|
SELECT * FROM t1 WHERE a IN (SELECT a FROM t1 WHERE a >'') ORDER BY a LIMIT 1;
|
|
a b
|
|
ab NULL
|
|
DROP TABLE t1;
|
|
# End of 11.0 tests
|