2010-06-22 19:24:22 +02:00
|
|
|
drop table if exists t0,t1,t2,t3;
|
2011-07-08 16:46:47 +02:00
|
|
|
set @innodb_mrr_cpk_tmp=@@optimizer_switch;
|
|
|
|
|
set optimizer_switch='mrr=on,mrr_sort_keys=on,index_condition_pushdown=on';
|
2010-06-22 19:24:22 +02:00
|
|
|
set @save_join_cache_level=@@join_cache_level;
|
|
|
|
|
set join_cache_level=6;
|
2020-01-13 20:07:04 +01:00
|
|
|
set @save_storage_engine=@@default_storage_engine;
|
|
|
|
|
set default_storage_engine=innodb;
|
2010-06-22 19:24:22 +02:00
|
|
|
create table t0(a int);
|
|
|
|
|
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
|
|
|
create table t1(a char(8), b char(8), filler char(100), primary key(a));
|
|
|
|
|
show create table t1;
|
|
|
|
|
Table Create Table
|
|
|
|
|
t1 CREATE TABLE `t1` (
|
2015-08-17 23:42:08 +02:00
|
|
|
`a` char(8) NOT NULL,
|
2010-06-22 19:24:22 +02:00
|
|
|
`b` char(8) DEFAULT NULL,
|
|
|
|
|
`filler` char(100) DEFAULT NULL,
|
|
|
|
|
PRIMARY KEY (`a`)
|
|
|
|
|
) ENGINE=InnoDB DEFAULT CHARSET=latin1
|
|
|
|
|
insert into t1 select
|
|
|
|
|
concat('a-', 1000 + A.a + B.a*10 + C.a*100, '=A'),
|
|
|
|
|
concat('b-', 1000 + A.a + B.a*10 + C.a*100, '=B'),
|
|
|
|
|
'filler'
|
|
|
|
|
from t0 A, t0 B, t0 C;
|
|
|
|
|
create table t2 (a char(8));
|
|
|
|
|
insert into t2 values ('a-1010=A'), ('a-1030=A'), ('a-1020=A');
|
|
|
|
|
This should use join buffer:
|
|
|
|
|
explain select * from t1, t2 where t1.a=t2.a;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
2011-04-02 12:04:45 +02:00
|
|
|
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 8 test.t2.a 1 Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 19:24:22 +02:00
|
|
|
This output must be sorted by value of t1.a:
|
|
|
|
|
select * from t1, t2 where t1.a=t2.a;
|
|
|
|
|
a b filler a
|
|
|
|
|
a-1010=A b-1010=B filler a-1010=A
|
|
|
|
|
a-1020=A b-1020=B filler a-1020=A
|
|
|
|
|
a-1030=A b-1030=B filler a-1030=A
|
|
|
|
|
drop table t1, t2;
|
|
|
|
|
create table t1(
|
|
|
|
|
a char(8) character set utf8, b int, filler char(100),
|
|
|
|
|
primary key(a,b)
|
|
|
|
|
);
|
|
|
|
|
insert into t1 select
|
|
|
|
|
concat('a-', 1000 + A.a + B.a*10 + C.a*100, '=A'),
|
|
|
|
|
1000 + A.a + B.a*10 + C.a*100,
|
|
|
|
|
'filler'
|
|
|
|
|
from t0 A, t0 B, t0 C;
|
|
|
|
|
create table t2 (a char(8) character set utf8, b int);
|
|
|
|
|
insert into t2 values ('a-1010=A', 1010), ('a-1030=A', 1030), ('a-1020=A', 1020);
|
|
|
|
|
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
2011-04-02 12:04:45 +02:00
|
|
|
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 19:24:22 +02:00
|
|
|
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
a b filler a b
|
|
|
|
|
a-1010=A 1010 filler a-1010=A 1010
|
|
|
|
|
a-1020=A 1020 filler a-1020=A 1020
|
|
|
|
|
a-1030=A 1030 filler a-1030=A 1030
|
|
|
|
|
insert into t2 values ('a-1030=A', 1030), ('a-1020=A', 1020);
|
|
|
|
|
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using where
|
2011-04-02 12:04:45 +02:00
|
|
|
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 28 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 19:24:22 +02:00
|
|
|
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
a b filler a b
|
|
|
|
|
a-1010=A 1010 filler a-1010=A 1010
|
|
|
|
|
a-1020=A 1020 filler a-1020=A 1020
|
|
|
|
|
a-1020=A 1020 filler a-1020=A 1020
|
|
|
|
|
a-1030=A 1030 filler a-1030=A 1030
|
|
|
|
|
a-1030=A 1030 filler a-1030=A 1030
|
|
|
|
|
drop table t1, t2;
|
|
|
|
|
create table t1(
|
|
|
|
|
a varchar(8) character set utf8, b int, filler char(100),
|
|
|
|
|
primary key(a,b)
|
|
|
|
|
);
|
|
|
|
|
insert into t1 select
|
|
|
|
|
concat('a-', 1000 + A.a + B.a*10 + C.a*100, '=A'),
|
|
|
|
|
1000 + A.a + B.a*10 + C.a*100,
|
|
|
|
|
'filler'
|
|
|
|
|
from t0 A, t0 B, t0 C;
|
|
|
|
|
create table t2 (a char(8) character set utf8, b int);
|
|
|
|
|
insert into t2 values ('a-1010=A', 1010), ('a-1030=A', 1030), ('a-1020=A', 1020);
|
|
|
|
|
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
2012-02-16 17:15:57 +01:00
|
|
|
1 SIMPLE t1 eq_ref PRIMARY PRIMARY 30 test.t2.a,test.t2.b 1 Using where; Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 19:24:22 +02:00
|
|
|
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
a b filler a b
|
|
|
|
|
a-1010=A 1010 filler a-1010=A 1010
|
|
|
|
|
a-1020=A 1020 filler a-1020=A 1020
|
|
|
|
|
a-1030=A 1030 filler a-1030=A 1030
|
|
|
|
|
explain select * from t1, t2 where t1.a=t2.a;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
2012-02-16 17:15:57 +01:00
|
|
|
1 SIMPLE t1 ref PRIMARY PRIMARY 26 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 19:24:22 +02:00
|
|
|
select * from t1, t2 where t1.a=t2.a;
|
|
|
|
|
a b filler a b
|
|
|
|
|
a-1010=A 1010 filler a-1010=A 1010
|
|
|
|
|
a-1020=A 1020 filler a-1020=A 1020
|
|
|
|
|
a-1030=A 1030 filler a-1030=A 1030
|
|
|
|
|
drop table t1, t2;
|
|
|
|
|
create table t1 (a int, b int, c int, filler char(100), primary key(a,b,c));
|
|
|
|
|
insert into t1 select A.a, B.a, C.a, 'filler' from t0 A, t0 B, t0 C;
|
|
|
|
|
insert into t1 values (11, 11, 11, 'filler');
|
|
|
|
|
insert into t1 values (11, 11, 12, 'filler');
|
|
|
|
|
insert into t1 values (11, 11, 13, 'filler');
|
|
|
|
|
insert into t1 values (11, 22, 1234, 'filler');
|
|
|
|
|
insert into t1 values (11, 33, 124, 'filler');
|
|
|
|
|
insert into t1 values (11, 33, 125, 'filler');
|
|
|
|
|
create table t2 (a int, b int);
|
|
|
|
|
insert into t2 values (11,33), (11,22), (11,11);
|
|
|
|
|
explain select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
2011-04-02 12:04:45 +02:00
|
|
|
1 SIMPLE t1 ref PRIMARY PRIMARY 8 test.t2.a,test.t2.b 1 Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 19:24:22 +02:00
|
|
|
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
a b c filler a b
|
|
|
|
|
11 11 11 filler 11 11
|
|
|
|
|
11 11 12 filler 11 11
|
|
|
|
|
11 11 13 filler 11 11
|
|
|
|
|
11 22 1234 filler 11 22
|
|
|
|
|
11 33 124 filler 11 33
|
|
|
|
|
11 33 125 filler 11 33
|
|
|
|
|
set join_cache_level=0;
|
|
|
|
|
select * from t1, t2 where t1.a=t2.a and t1.b=t2.b;
|
|
|
|
|
a b c filler a b
|
|
|
|
|
11 33 124 filler 11 33
|
|
|
|
|
11 33 125 filler 11 33
|
|
|
|
|
11 22 1234 filler 11 22
|
|
|
|
|
11 11 11 filler 11 11
|
|
|
|
|
11 11 12 filler 11 11
|
|
|
|
|
11 11 13 filler 11 11
|
|
|
|
|
set join_cache_level=6;
|
2010-06-22 20:38:52 +02:00
|
|
|
explain select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
2012-02-16 17:15:57 +01:00
|
|
|
1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 20:38:52 +02:00
|
|
|
select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
|
|
|
|
|
a b c filler a b
|
|
|
|
|
set optimizer_switch='index_condition_pushdown=off';
|
|
|
|
|
explain select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
2010-11-02 17:32:26 +01:00
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where
|
2011-04-02 12:04:45 +02:00
|
|
|
1 SIMPLE t1 ref PRIMARY PRIMARY 4 test.t2.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered scan
|
2010-06-22 20:38:52 +02:00
|
|
|
select * from t1, t2 where t1.a=t2.a and t2.b + t1.b > 100;
|
|
|
|
|
a b c filler a b
|
|
|
|
|
set optimizer_switch='index_condition_pushdown=on';
|
2010-06-22 19:24:22 +02:00
|
|
|
drop table t1,t2;
|
|
|
|
|
drop table t0;
|
Fix for MDEV-3948, and backport of the following collection of fixes and backports
from MariaDB 10.0.
The bug in mdev-3948 was an instance of the problem fixed by Sergey's patch
in 10.0 - namely that the range optimizer could change table->[read | write]_set,
and not restore it.
revno: 3471
committer: Sergey Petrunya <psergey@askmonty.org>
branch nick: 10.0-serg-fix-imerge
timestamp: Sat 2012-11-03 12:24:36 +0400
message:
# MDEV-3817: Wrong result with index_merge+index_merge_intersection, InnoDB table, join, AND and OR conditions
Reconcile the fixes from:
#
# guilhem.bichot@oracle.com-20110805143029-ywrzuz15uzgontr0
# Fix for BUG#12698916 - "JOIN QUERY GIVES WRONG RESULT AT 2ND EXEC. OR
# AFTER FLUSH TABLES [-INT VS NULL]"
#
# guilhem.bichot@oracle.com-20111209150650-tzx3ldzxe1yfwji6
# Fix for BUG#12912171 - ASSERTION FAILED: QUICK->HEAD->READ_SET == SAVE_READ_SET
# and
#
and related fixes from: BUG#1006164, MDEV-376:
Now, ROR-merged QUICK_RANGE_SELECT objects make no assumptions about the values
of table->read_set and table->write_set.
Each QUICK_ROR_SELECT has (and had before) its own column bitmap, but now, all
QUICK_ROR_SELECT's functions that care: reset(), init_ror_merged_scan(), and
get_next() will set table->read_set when invoked and restore it back to what
it was before the call before they return.
This allows to avoid the mess when somebody else modifies table->read_set for
some reason.
2013-01-28 14:13:39 +01:00
|
|
|
#
|
2014-10-28 23:37:58 +01:00
|
|
|
# MDEV-6878: Use of uninitialized saved_primary_key in Mrr_ordered_index_reader::resume_read()
|
|
|
|
|
#
|
|
|
|
|
create table t0(a int);
|
|
|
|
|
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
|
|
|
create table t1 (
|
|
|
|
|
pk varchar(32) character set utf8 primary key,
|
|
|
|
|
kp1 char(32) not null,
|
|
|
|
|
col1 varchar(32),
|
|
|
|
|
key (kp1)
|
|
|
|
|
) engine=innodb;
|
|
|
|
|
insert into t1
|
|
|
|
|
select
|
|
|
|
|
concat('pk-', 1000 +A.a),
|
|
|
|
|
concat('kp1-', 1000 +A.a),
|
|
|
|
|
concat('val-', 1000 +A.a)
|
|
|
|
|
from test.t0 A ;
|
|
|
|
|
create table t2 as select kp1 as a from t1;
|
|
|
|
|
set join_cache_level=8;
|
|
|
|
|
set optimizer_switch='mrr=on,mrr_sort_keys=on';
|
|
|
|
|
explain
|
|
|
|
|
select * from t2 straight_join t1 force index(kp1) where t1.kp1=t2.a;
|
|
|
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
|
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 10
|
|
|
|
|
1 SIMPLE t1 ref kp1 kp1 32 test.t2.a 1 Using join buffer (flat, BKAH join); Key-ordered Rowid-ordered scan
|
|
|
|
|
select * from t2 straight_join t1 force index(kp1) where t1.kp1=t2.a;
|
|
|
|
|
a pk kp1 col1
|
|
|
|
|
kp1-1000 pk-1000 kp1-1000 val-1000
|
|
|
|
|
kp1-1001 pk-1001 kp1-1001 val-1001
|
|
|
|
|
kp1-1002 pk-1002 kp1-1002 val-1002
|
|
|
|
|
kp1-1003 pk-1003 kp1-1003 val-1003
|
|
|
|
|
kp1-1004 pk-1004 kp1-1004 val-1004
|
|
|
|
|
kp1-1005 pk-1005 kp1-1005 val-1005
|
|
|
|
|
kp1-1006 pk-1006 kp1-1006 val-1006
|
|
|
|
|
kp1-1007 pk-1007 kp1-1007 val-1007
|
|
|
|
|
kp1-1008 pk-1008 kp1-1008 val-1008
|
|
|
|
|
kp1-1009 pk-1009 kp1-1009 val-1009
|
|
|
|
|
drop table t0,t1,t2;
|
2014-10-29 11:22:48 +01:00
|
|
|
#
|
|
|
|
|
#
|
Fix for MDEV-3948, and backport of the following collection of fixes and backports
from MariaDB 10.0.
The bug in mdev-3948 was an instance of the problem fixed by Sergey's patch
in 10.0 - namely that the range optimizer could change table->[read | write]_set,
and not restore it.
revno: 3471
committer: Sergey Petrunya <psergey@askmonty.org>
branch nick: 10.0-serg-fix-imerge
timestamp: Sat 2012-11-03 12:24:36 +0400
message:
# MDEV-3817: Wrong result with index_merge+index_merge_intersection, InnoDB table, join, AND and OR conditions
Reconcile the fixes from:
#
# guilhem.bichot@oracle.com-20110805143029-ywrzuz15uzgontr0
# Fix for BUG#12698916 - "JOIN QUERY GIVES WRONG RESULT AT 2ND EXEC. OR
# AFTER FLUSH TABLES [-INT VS NULL]"
#
# guilhem.bichot@oracle.com-20111209150650-tzx3ldzxe1yfwji6
# Fix for BUG#12912171 - ASSERTION FAILED: QUICK->HEAD->READ_SET == SAVE_READ_SET
# and
#
and related fixes from: BUG#1006164, MDEV-376:
Now, ROR-merged QUICK_RANGE_SELECT objects make no assumptions about the values
of table->read_set and table->write_set.
Each QUICK_ROR_SELECT has (and had before) its own column bitmap, but now, all
QUICK_ROR_SELECT's functions that care: reset(), init_ror_merged_scan(), and
get_next() will set table->read_set when invoked and restore it back to what
it was before the call before they return.
This allows to avoid the mess when somebody else modifies table->read_set for
some reason.
2013-01-28 14:13:39 +01:00
|
|
|
# MDEV-3817: Wrong result with index_merge+index_merge_intersection, InnoDB table, join, AND and OR conditions
|
|
|
|
|
#
|
|
|
|
|
set @tmp_mdev3817=@@optimizer_switch;
|
|
|
|
|
SET optimizer_switch='index_merge=on,index_merge_intersection=on';
|
|
|
|
|
CREATE TABLE t1 (
|
|
|
|
|
a INT PRIMARY KEY,
|
|
|
|
|
b INT,
|
|
|
|
|
c VARCHAR(1024) CHARACTER SET utf8,
|
|
|
|
|
d INT,
|
|
|
|
|
KEY (b)
|
|
|
|
|
) ENGINE=InnoDB;
|
|
|
|
|
INSERT INTO t1 VALUES
|
|
|
|
|
(1, 9, 'one', 11), (2, 6, 'two', 12), (3, 2, 'three', 13), (4, 5, 'four', 14);
|
|
|
|
|
CREATE TABLE t2 (e INT, g INT) ENGINE=InnoDB;
|
|
|
|
|
INSERT INTO t2 VALUES (1,9), (2,6) ;
|
|
|
|
|
SELECT * FROM t1, t2 WHERE g = b AND ( a < 7 OR a > e );
|
|
|
|
|
a b c d e g
|
|
|
|
|
1 9 one 11 1 9
|
|
|
|
|
2 6 two 12 2 6
|
|
|
|
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DROP TABLE t1, t2;
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set optimizer_switch=@tmp_mdev3817;
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2013-09-20 12:47:38 +02:00
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#
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# MDEV-5037: Server crash on a JOIN on a derived table with join_cache_level > 2
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#
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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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id char(8) CHARACTER SET utf8 NOT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=latin1;
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CREATE TABLE t2 (
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id char(8) CHARACTER SET utf8 DEFAULT NULL,
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url text CHARACTER SET utf8
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) ENGINE=InnoDB DEFAULT CHARSET=latin1;
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insert into t1 select '03b2ca8c' from t0 A, t0 B limit 80;
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insert into t2 select '03b2ca8c','' from t0 A, t0 B, t0 C;
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set @tmp_mdev5037=@@join_cache_level;
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set join_cache_level=3;
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explain SELECT 1 FROM (SELECT url, id FROM t2 LIMIT 1 OFFSET 20) derived RIGHT JOIN t1 ON t1.id = derived.id;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t1 ALL NULL NULL NULL NULL #
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2018-10-08 15:19:27 +02:00
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1 PRIMARY <derived2> ref key0 key0 25 test.t1.id #
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2013-09-20 12:47:38 +02:00
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2 DERIVED t2 ALL NULL NULL NULL NULL #
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set join_cache_level= @tmp_mdev5037;
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drop table t0,t1,t2;
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2014-10-29 11:22:48 +01:00
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#
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# This must be at the end:
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#
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set @@join_cache_level= @save_join_cache_level;
|
2020-01-13 20:07:04 +01:00
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|
set default_storage_engine=@save_storage_engine;
|
2014-10-29 11:22:48 +01:00
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set optimizer_switch=@innodb_mrr_cpk_tmp;
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