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136bcfdf75
Followup to fix for MDEV-25858: When test_if_skip_sort_order() decides to use an index to satisfy ORDER BY ... LIMIT clause, it should disable "Range Checked for Each Record" optimization. Do this in all cases.
212 lines
5.3 KiB
Plaintext
212 lines
5.3 KiB
Plaintext
#
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# ORDER BY handling (e.g. filesort) tests that require innodb
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#
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-- source include/have_innodb.inc
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--disable_warnings
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drop table if exists t0,t1,t2,t3;
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--enable_warnings
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--echo #
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--echo # MDEV-6434: Wrong result (extra rows) with ORDER BY, multiple-column index, InnoDB
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--echo #
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CREATE TABLE t1 (a INT, b INT, c INT, d TEXT, KEY idx(a,b,c)) ENGINE=InnoDB;
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INSERT INTO t1 (a,c) VALUES
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(8, 9),(8, 10),(13, 15),(16, 17),(16, 18),(16, 19),(20, 21),
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(20, 22),(20, 24),(20, 25),(20, 26),(20, 27),(20, 28);
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SELECT * FROM t1 WHERE a = 8 AND (b = 1 OR b IS NULL) ORDER BY c;
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DROP TABLE t1;
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--echo #
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--echo # MDEV-9457: Poor query plan chosen for ORDER BY query by a recent 10.1
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--echo #
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create table t0 (a int);
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insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
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create table t1 (
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pk int primary key,
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key1 int,
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key2 int,
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col1 char(255),
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key(key1),
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key(key2)
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) engine=innodb;
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set @a=-1;
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insert into t1
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select
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@a:=@a+1,
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@a,
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@a,
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repeat('abcd', 63)
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from t0 A, t0 B, t0 C, t0 D;
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--echo # The following must NOT use 'index' on PK.
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--echo # It should use index_merge(key1,key2) + filesort
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--replace_column 9 #
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explain
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select *
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from t1
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where key1<3 or key2<3
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order by pk;
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--replace_column 9 #
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explain
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select *
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from t1
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where key1<3 or key2<3;
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drop table t0, t1;
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--echo #
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--echo # MDEV-18094: Query with order by limit picking index scan over filesort
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--echo #
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create table t0 (a int);
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INSERT INTO t0 VALUES (0),(0),(0),(0),(2),(0),(0),(1),(1),(0);
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CREATE TABLE t1 (
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a int(11),
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b int(11),
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c int(11),
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KEY a_c (a,c),
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KEY a_b (a,b)
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) ENGINE=InnoDB;
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insert into t1 select A.a , B.a, C.a from t0 A, t0 B, t0 C;
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--echo # should use ref access
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explain select a,b,c from t1 where a=1 and c=2 order by b;
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--echo # both should use range access
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explain select a,b,c from t1 where a=1 and c=2 order by b limit 1000;
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explain select a,b,c from t1 where a=1 and c=2 order by b limit 2000;
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drop table t1,t0;
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--echo # Start of 10.2 tests
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--echo #
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--echo # MDEV-14071: wrong results with orderby_uses_equalities=on
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--echo # (duplicate of MDEV-13994)
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--echo #
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CREATE TABLE t1 (i int, j int, z int,PRIMARY KEY (i,j), KEY (z)) ENGINE=InnoDB;
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CREATE TABLE t2 (i int, j int, PRIMARY KEY (i,j)) ENGINE=InnoDB;
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CREATE TABLE t3 (j int, n varchar(5), PRIMARY KEY (j)) ENGINE=InnoDB;
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INSERT INTO t1 VALUES
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(127,0,1),(188,0,1),(206,0,1),(218,0,1),(292,0,1),(338,0,1),(375,0,1),
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(381,0,1),(409,0,1),(466,0,1),(469,0,1),(498,0,1),(656,0,1);
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INSERT INTO t1 VALUES
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(77,4,0),(86,7,0),(96,6,0),(96,7,0),(99,9,0),(99,10,0),(99,11,0),(104,4,0),
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(106,5,0),(148,6,0),(177,6,0),(181,5,0),(188,8,0),(218,8,0),(253,7,0),
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(268,4,0),(338,4,0),(409,7,0),(466,8,0),(469,8,0),(498,8,0),(656,8,0);
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INSERT INTO t2 VALUES
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(127,7),(188,8),(188,9),(206,6),(218,8),(218,9),(292,7),(338,4),(338,5),
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(375,6),(381,5),(409,7),(409,8),(466,8),(466,9),(469,8),(469,9),(498,8),
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(498,9),(656,8),(656,9);
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INSERT INTO t3 VALUES
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(4,'four'),(5,'five'),(6,'six'),(7,'seven'),(8,'eight'),(9,'nine');
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let $q1=
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SELECT i,n
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FROM t1 INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
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WHERE i IN (SELECT i FROM t1 WHERE z=1) AND z=0 ORDER BY i;
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let $q2=
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SELECT i,n
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FROM t1 x INNER JOIN t2 USING (i,j) LEFT JOIN t3 USING (j)
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WHERE EXISTS (SELECT * FROM t1 WHERE i=x.i AND z=1) AND z=0 ORDER BY i;
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SET @save_optimizer_switch=@@optimizer_switch;
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SET optimizer_switch='orderby_uses_equalities=off';
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eval $q1;
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eval $q2;
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SET optimizer_switch='orderby_uses_equalities=on';
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eval $q1;
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eval $q2;
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set optimizer_switch= @save_optimizer_switch;
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DROP TABLE t1,t2,t3;
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--echo #
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--echo # MDEV-25858: Query results are incorrect when indexes are added
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--echo #
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CREATE TABLE t1 (id int NOT NULL PRIMARY KEY) engine=innodb;
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insert into t1 values (1),(2),(3);
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CREATE TABLE t2 (
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id int NOT NULL PRIMARY KEY,
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id2 int NOT NULL,
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d1 datetime,
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d2 timestamp NOT NULL,
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KEY id2 (id2)
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) engine=innodb;
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insert into t2 values
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(1,2,'2019-03-05 00:00:00','2019-03-06 00:00:00'),
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(2,3,'2019-03-05 00:00:00','2019-03-06 00:00:00'),
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(3,3,'2019-03-06 00:00:00','2019-03-05 00:00:00');
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select
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t1.id,t2.id
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from
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t1 left join
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t2 on t2.id2 = t1.id and
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t2.id = (select dd.id
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from t2 dd
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where
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dd.id2 = t1.id and
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d1 > '2019-02-06 00:00:00'
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order by
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dd.d1 desc, dd.d2 desc, dd.id desc limit 1
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);
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create index for_latest_sort on t2 (d1 desc, d2 desc, id desc);
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select
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t1.id,t2.id
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from
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t1 left join
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t2 on t2.id2 = t1.id and
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t2.id = (select dd.id
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from t2 dd
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where
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dd.id2 = t1.id and
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d1 > '2019-02-06 00:00:00'
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order by
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dd.d1 desc, dd.d2 desc, dd.id desc limit 1
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);
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--echo #
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--echo # MDEV-27270: Wrong query plan with Range Checked for Each Record and ORDER BY ... LIMIT
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--echo #
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--echo # This must NOT have "Range checked for each record" without any
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--echo # provisions to produce rows in the required ordering:
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--replace_column 9 #
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explain
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select
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t1.id,t2.id
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from
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t1 left join
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t2 on t2.id2 = t1.id and
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t2.id = (select dd.id
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from t2 dd
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where
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dd.id2 = t1.id and
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d1 > '2019-02-06 00:00:00'
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order by
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dd.d1, dd.d2, dd.id limit 1
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);
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drop table t1,t2;
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--echo # End of 10.2 tests
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