| Current Path : /home/usr.opt/mysql57/mysql-test/r/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //home/usr.opt/mysql57/mysql-test/r/range_mrr.result |
set optimizer_switch='mrr=on,mrr_cost_based=off';
drop table if exists t1, t2, t3;
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
Warnings:
Warning 3090 Changing sql mode 'NO_AUTO_CREATE_USER' is deprecated. It will be removed in a future release.
CREATE TABLE t1 (
event_date date DEFAULT '0000-00-00' NOT NULL,
type int(11) DEFAULT '0' NOT NULL,
event_id int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (event_date,type,event_id)
);
INSERT INTO t1 VALUES ('1999-07-10',100100,24), ('1999-07-11',100100,25),
('1999-07-13',100600,0), ('1999-07-13',100600,4), ('1999-07-13',100600,26),
('1999-07-14',100600,10), ('1999-07-15',100600,16), ('1999-07-15',100800,45),
('1999-07-15',101000,47), ('1999-07-16',100800,46), ('1999-07-20',100600,5),
('1999-07-20',100600,27), ('1999-07-21',100600,11), ('1999-07-22',100600,17),
('1999-07-23',100100,39), ('1999-07-24',100100,39), ('1999-07-24',100500,40),
('1999-07-25',100100,39), ('1999-07-27',100600,1), ('1999-07-27',100600,6),
('1999-07-27',100600,28), ('1999-07-28',100600,12), ('1999-07-29',100500,41),
('1999-07-29',100600,18), ('1999-07-30',100500,41), ('1999-07-31',100500,41),
('1999-08-01',100700,34), ('1999-08-03',100600,7), ('1999-08-03',100600,29),
('1999-08-04',100600,13), ('1999-08-05',100500,42), ('1999-08-05',100600,19),
('1999-08-06',100500,42), ('1999-08-07',100500,42), ('1999-08-08',100500,42),
('1999-08-10',100600,2), ('1999-08-10',100600,9), ('1999-08-10',100600,30),
('1999-08-11',100600,14), ('1999-08-12',100600,20), ('1999-08-17',100500,8),
('1999-08-17',100600,31), ('1999-08-18',100600,15), ('1999-08-19',100600,22),
('1999-08-24',100600,3), ('1999-08-24',100600,32), ('1999-08-27',100500,43),
('1999-08-31',100600,33), ('1999-09-17',100100,37), ('1999-09-18',100100,37),
('1999-09-19',100100,37), ('2000-12-18',100700,38);
select event_date,type,event_id from t1 WHERE event_date >= "1999-07-01" AND event_date < "1999-07-15" AND (type=100600 OR type=100100) ORDER BY event_date;
event_date type event_id
1999-07-10 100100 24
1999-07-11 100100 25
1999-07-13 100600 0
1999-07-13 100600 4
1999-07-13 100600 26
1999-07-14 100600 10
explain select event_date,type,event_id from t1 WHERE type = 100601 and event_date >= "1999-07-01" AND event_date < "1999-07-15" AND (type=100600 OR type=100100) ORDER BY event_date;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`event_date` AS `event_date`,`test`.`t1`.`type` AS `type`,`test`.`t1`.`event_id` AS `event_id` from `test`.`t1` where 0 order by `test`.`t1`.`event_date`
select event_date,type,event_id from t1 WHERE event_date >= "1999-07-01" AND event_date <= "1999-07-15" AND (type=100600 OR type=100100) or event_date >= "1999-07-01" AND event_date <= "1999-07-15" AND type=100099;
event_date type event_id
1999-07-10 100100 24
1999-07-11 100100 25
1999-07-13 100600 0
1999-07-13 100600 4
1999-07-13 100600 26
1999-07-14 100600 10
1999-07-15 100600 16
drop table t1;
CREATE TABLE t1 (
PAPER_ID smallint(6) DEFAULT '0' NOT NULL,
YEAR smallint(6) DEFAULT '0' NOT NULL,
ISSUE smallint(6) DEFAULT '0' NOT NULL,
CLOSED tinyint(4) DEFAULT '0' NOT NULL,
ISS_DATE date DEFAULT '0000-00-00' NOT NULL,
PRIMARY KEY (PAPER_ID,YEAR,ISSUE)
);
INSERT INTO t1 VALUES (3,1999,34,0,'1999-07-12'), (1,1999,111,0,'1999-03-23'),
(1,1999,222,0,'1999-03-23'), (3,1999,33,0,'1999-07-12'),
(3,1999,32,0,'1999-07-12'), (3,1999,31,0,'1999-07-12'),
(3,1999,30,0,'1999-07-12'), (3,1999,29,0,'1999-07-12'),
(3,1999,28,0,'1999-07-12'), (1,1999,40,1,'1999-05-01'),
(1,1999,41,1,'1999-05-01'), (1,1999,42,1,'1999-05-01'),
(1,1999,46,1,'1999-05-01'), (1,1999,47,1,'1999-05-01'),
(1,1999,48,1,'1999-05-01'), (1,1999,49,1,'1999-05-01'),
(1,1999,50,0,'1999-05-01'), (1,1999,51,0,'1999-05-01'),
(1,1999,200,0,'1999-06-28'), (1,1999,52,0,'1999-06-28'),
(1,1999,53,0,'1999-06-28'), (1,1999,54,0,'1999-06-28'),
(1,1999,55,0,'1999-06-28'), (1,1999,56,0,'1999-07-01'),
(1,1999,57,0,'1999-07-01'), (1,1999,58,0,'1999-07-01'),
(1,1999,59,0,'1999-07-01'), (1,1999,60,0,'1999-07-01'),
(3,1999,35,0,'1999-07-12');
select YEAR,ISSUE from t1 where PAPER_ID=3 and (YEAR>1999 or (YEAR=1999 and ISSUE>28)) order by YEAR,ISSUE;
YEAR ISSUE
1999 29
1999 30
1999 31
1999 32
1999 33
1999 34
1999 35
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
repair table t1;
Table Op Msg_type Msg_text
test.t1 repair status OK
drop table t1;
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
parent_id int(11) DEFAULT '0' NOT NULL,
level tinyint(4) DEFAULT '0' NOT NULL,
PRIMARY KEY (id),
KEY parent_id (parent_id),
KEY level (level)
);
INSERT INTO t1 VALUES (1,0,0), (3,1,1), (4,1,1), (8,2,2), (9,2,2), (17,3,2),
(22,4,2), (24,4,2), (28,5,2), (29,5,2), (30,5,2), (31,6,2), (32,6,2), (33,6,2),
(203,7,2), (202,7,2), (20,3,2), (157,0,0), (193,5,2), (40,7,2), (2,1,1),
(15,2,2), (6,1,1), (34,6,2), (35,6,2), (16,3,2), (7,1,1), (36,7,2), (18,3,2),
(26,5,2), (27,5,2), (183,4,2), (38,7,2), (25,5,2), (37,7,2), (21,4,2),
(19,3,2), (5,1,1), (179,5,2);
SELECT * FROM t1 WHERE level = 1 AND parent_id = 1;
id parent_id level
3 1 1
4 1 1
2 1 1
6 1 1
7 1 1
5 1 1
SELECT * FROM t1 WHERE level = 1 AND parent_id = 1 order by id;
id parent_id level
2 1 1
3 1 1
4 1 1
5 1 1
6 1 1
7 1 1
drop table t1;
create table t1(
Satellite varchar(25) not null,
SensorMode varchar(25) not null,
FullImageCornersUpperLeftLongitude double not null,
FullImageCornersUpperRightLongitude double not null,
FullImageCornersUpperRightLatitude double not null,
FullImageCornersLowerRightLatitude double not null,
index two (Satellite, SensorMode, FullImageCornersUpperLeftLongitude, FullImageCornersUpperRightLongitude, FullImageCornersUpperRightLatitude, FullImageCornersLowerRightLatitude));
insert into t1 values("OV-3","PAN1",91,-92,40,50);
insert into t1 values("OV-4","PAN1",91,-92,40,50);
select * from t1 where t1.Satellite = "OV-3" and t1.SensorMode = "PAN1" and t1.FullImageCornersUpperLeftLongitude > -90.000000 and t1.FullImageCornersUpperRightLongitude < -82.000000;
Satellite SensorMode FullImageCornersUpperLeftLongitude FullImageCornersUpperRightLongitude FullImageCornersUpperRightLatitude FullImageCornersLowerRightLatitude
OV-3 PAN1 91 -92 40 50
drop table t1;
create table t1 ( aString char(100) not null default "", key aString (aString(10)) );
insert t1 (aString) values ( "believe in myself" ), ( "believe" ), ("baaa" ), ( "believe in love");
select * from t1 where aString < "believe in myself" order by aString;
aString
baaa
believe
believe in love
select * from t1 where aString > "believe in love" order by aString;
aString
believe in myself
alter table t1 drop key aString;
select * from t1 where aString < "believe in myself" order by aString;
aString
baaa
believe
believe in love
select * from t1 where aString > "believe in love" order by aString;
aString
believe in myself
drop table t1;
CREATE TABLE t1 (
t1ID int(10) unsigned NOT NULL auto_increment,
art binary(1) NOT NULL default '',
KNR char(5) NOT NULL default '',
RECHNR char(6) NOT NULL default '',
POSNR char(2) NOT NULL default '',
ARTNR char(10) NOT NULL default '',
TEX char(70) NOT NULL default '',
PRIMARY KEY (t1ID),
KEY IdxArt (art),
KEY IdxKnr (KNR),
KEY IdxArtnr (ARTNR)
) ENGINE=MyISAM;
INSERT INTO t1 (art) VALUES ('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j');
select count(*) from t1 where upper(art) = 'J';
count(*)
213
select count(*) from t1 where art = 'J' or art = 'j';
count(*)
602
select count(*) from t1 where art = 'j' or art = 'J';
count(*)
602
select count(*) from t1 where art = 'j';
count(*)
389
select count(*) from t1 where art = 'J';
count(*)
213
drop table t1;
create table t1 (x int, y int, index(x), index(y));
insert into t1 (x) values (1),(2),(3),(4),(5),(6),(7),(8),(9);
update t1 set y=x;
analyze table t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
explain select * from t1, t1 t2 where t1.y = 8 and t2.x between 7 and t1.y+0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref y y 5 const 1 100.00 NULL
1 SIMPLE t2 NULL range x x 5 NULL 2 100.00 Using where; Using MRR; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`x` AS `x`,`test`.`t1`.`y` AS `y`,`test`.`t2`.`x` AS `x`,`test`.`t2`.`y` AS `y` from `test`.`t1` join `test`.`t1` `t2` where ((`test`.`t1`.`y` = 8) and (`test`.`t2`.`x` between 7 and <cache>((8 + 0))))
explain select * from t1, t1 t2 where t1.y = 8 and t2.x >= 7 and t2.x <= t1.y+0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref y y 5 const 1 100.00 NULL
1 SIMPLE t2 NULL range x x 5 NULL 2 100.00 Using where; Using MRR; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`x` AS `x`,`test`.`t1`.`y` AS `y`,`test`.`t2`.`x` AS `x`,`test`.`t2`.`y` AS `y` from `test`.`t1` join `test`.`t1` `t2` where ((`test`.`t1`.`y` = 8) and (`test`.`t2`.`x` >= 7) and (`test`.`t2`.`x` <= <cache>((8 + 0))))
explain select * from t1, t1 t2 where t1.y = 2 and t2.x between t1.y-1 and t1.y+1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref y y 5 const 1 100.00 NULL
1 SIMPLE t2 NULL range x x 5 NULL 3 100.00 Using where; Using MRR; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`x` AS `x`,`test`.`t1`.`y` AS `y`,`test`.`t2`.`x` AS `x`,`test`.`t2`.`y` AS `y` from `test`.`t1` join `test`.`t1` `t2` where ((`test`.`t1`.`y` = 2) and (`test`.`t2`.`x` between <cache>((2 - 1)) and <cache>((2 + 1))))
explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= t1.y-1 and t2.x <= t1.y+1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref y y 5 const 1 100.00 NULL
1 SIMPLE t2 NULL range x x 5 NULL 3 100.00 Using where; Using MRR; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`x` AS `x`,`test`.`t1`.`y` AS `y`,`test`.`t2`.`x` AS `x`,`test`.`t2`.`y` AS `y` from `test`.`t1` join `test`.`t1` `t2` where ((`test`.`t1`.`y` = 2) and (`test`.`t2`.`x` >= <cache>((2 - 1))) and (`test`.`t2`.`x` <= <cache>((2 + 1))))
explain select * from t1, t1 t2 where t1.y = 2 and t2.x between 0 and t1.y;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref y y 5 const 1 100.00 NULL
1 SIMPLE t2 NULL range x x 5 NULL 2 100.00 Using where; Using MRR; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`x` AS `x`,`test`.`t1`.`y` AS `y`,`test`.`t2`.`x` AS `x`,`test`.`t2`.`y` AS `y` from `test`.`t1` join `test`.`t1` `t2` where ((`test`.`t1`.`y` = 2) and (`test`.`t2`.`x` between 0 and 2))
explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= 0 and t2.x <= t1.y;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref y y 5 const 1 100.00 NULL
1 SIMPLE t2 NULL range x x 5 NULL 2 100.00 Using where; Using MRR; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`x` AS `x`,`test`.`t1`.`y` AS `y`,`test`.`t2`.`x` AS `x`,`test`.`t2`.`y` AS `y` from `test`.`t1` join `test`.`t1` `t2` where ((`test`.`t1`.`y` = 2) and (`test`.`t2`.`x` >= 0) and (`test`.`t2`.`x` <= 2))
explain select count(*) from t1 where x in (1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref x x 5 const 1 100.00 Using index
Warnings:
Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`t1` where (`test`.`t1`.`x` = 1)
explain select count(*) from t1 where x in (1,2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 5 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`t1` where (`test`.`t1`.`x` in (1,2))
drop table t1;
CREATE TABLE t1 (key1 int(11) NOT NULL default '0', KEY i1 (key1));
INSERT INTO t1 VALUES (0),(0),(0),(0),(0),(1),(1);
CREATE TABLE t2 (keya int(11) NOT NULL default '0', KEY j1 (keya));
INSERT INTO t2 VALUES (0),(0),(1),(1),(2),(2);
explain select * from t1, t2 where (t1.key1 <t2.keya + 1) and t2.keya=3;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ref j1 j1 4 const 1 100.00 Using index
1 SIMPLE t1 NULL index i1 i1 4 NULL 7 100.00 Using where; Using index; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`key1` AS `key1`,`test`.`t2`.`keya` AS `keya` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`keya` = 3) and (`test`.`t1`.`key1` < <cache>((3 + 1))))
explain select * from t1 force index(i1), t2 force index(j1) where
(t1.key1 <t2.keya + 1) and t2.keya=3;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ref j1 j1 4 const 1 100.00 Using index
1 SIMPLE t1 NULL index i1 i1 4 NULL 7 100.00 Using where; Using index; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`key1` AS `key1`,`test`.`t2`.`keya` AS `keya` from `test`.`t1` FORCE INDEX (`i1`) join `test`.`t2` FORCE INDEX (`j1`) where ((`test`.`t2`.`keya` = 3) and (`test`.`t1`.`key1` < <cache>((3 + 1))))
DROP TABLE t1,t2;
CREATE TABLE t1 (
a int(11) default NULL,
b int(11) default NULL,
KEY a (a),
KEY b (b)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES
(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,2),(10,2),
(13,2),(14,2),(15,2),(16,2),(17,3),(17,3),(16,3),(17,3),(19,3),(20,3),
(21,4),(22,5),(23,5),(24,5),(25,5),(26,5),(30,5),(31,5),(32,5),(33,5),
(33,5),(33,5),(33,5),(33,5),(34,5),(35,5);
EXPLAIN SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a,b a 5 NULL 2 40.54 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 5) and (`test`.`t1`.`a` in (1,2)))
SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
a b
DROP TABLE t1;
CREATE TABLE t1 (a int, b int, c int, INDEX (c,a,b));
INSERT INTO t1 VALUES (1,0,0),(1,0,0),(1,0,0);
INSERT INTO t1 VALUES (0,1,0),(0,1,0),(0,1,0);
SELECT COUNT(*) FROM t1 WHERE (c=0 and a=1) or (c=0 and b=1);
COUNT(*)
6
SELECT COUNT(*) FROM t1 WHERE (c=0 and b=1) or (c=0 and a=1);
COUNT(*)
6
DROP TABLE t1;
CREATE TABLE t1 ( a int not null, b int not null, INDEX ab(a,b) );
INSERT INTO t1 VALUES (47,1), (70,1), (15,1), (15, 4);
SELECT * FROM t1
WHERE
(
( b =1 AND a BETWEEN 14 AND 21 ) OR
( b =2 AND a BETWEEN 16 AND 18 ) OR
( b =3 AND a BETWEEN 15 AND 19 ) OR
(a BETWEEN 19 AND 47)
);
a b
15 1
47 1
DROP TABLE t1;
CREATE TABLE t1 (
id int( 11 ) unsigned NOT NULL AUTO_INCREMENT ,
line int( 5 ) unsigned NOT NULL default '0',
columnid int( 3 ) unsigned NOT NULL default '0',
owner int( 3 ) unsigned NOT NULL default '0',
ordinal int( 3 ) unsigned NOT NULL default '0',
showid smallint( 6 ) unsigned NOT NULL default '1',
tableid int( 1 ) unsigned NOT NULL default '1',
content int( 5 ) unsigned NOT NULL default '188',
PRIMARY KEY ( owner, id ) ,
KEY menu( owner, showid, columnid ) ,
KEY `COLUMN` ( owner, columnid, line ) ,
KEY `LINES` ( owner, tableid, content, id ) ,
KEY recount( owner, line )
) ENGINE = MYISAM;
INSERT into t1 (owner,id,columnid,line) values (11,15,15,1),(11,13,13,5);
SELECT id, columnid, tableid, content, showid, line, ordinal FROM t1 WHERE owner=11 AND ((columnid IN ( 15, 13, 14 ) AND line IN ( 1, 2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 31 )) OR (columnid IN ( 13, 14 ) AND line IN ( 15 ))) LIMIT 0 , 30;
id columnid tableid content showid line ordinal
13 13 1 188 1 5 0
15 15 1 188 1 1 0
drop table t1;
create table t1 (id int(10) primary key);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9);
select id from t1 where id in (2,5,9) ;
id
2
5
9
select id from t1 where id=2 or id=5 or id=9 ;
id
2
5
9
drop table t1;
create table t1 ( id1 int not null, id2 int not null, idnull int null, c char(20), primary key (id1,id2));
insert into t1 values (0,1,NULL,"aaa"), (1,1,NULL,"aaa"), (2,1,NULL,"aaa"),
(3,1,NULL,"aaa"), (4,1,NULL,"aaa"), (5,1,NULL,"aaa"),
(6,1,NULL,"aaa"), (7,1,NULL,"aaa"), (8,1,NULL,"aaa"),
(9,1,NULL,"aaa"), (10,1,NULL,"aaa"), (11,1,NULL,"aaa"),
(12,1,NULL,"aaa"), (13,1,NULL,"aaa"), (14,1,NULL,"aaa"),
(15,1,NULL,"aaa"), (16,1,NULL,"aaa"), (17,1,NULL,"aaa"),
(18,1,NULL,"aaa"), (19,1,NULL,"aaa"), (20,1,NULL,"aaa");
select a.id1, b.idnull from t1 as a, t1 as b where a.id2=1 and a.id1=1 and b.id1=a.idnull order by b.id2 desc limit 1;
id1 idnull
drop table t1;
create table t1 (
id int not null auto_increment,
name char(1) not null,
uid int not null,
primary key (id),
index uid_index (uid));
create table t2 (
id int not null auto_increment,
name char(1) not null,
uid int not null,
primary key (id),
index uid_index (uid));
insert into t1(id, uid, name) values(1, 0, ' ');
insert into t1(uid, name) values(0, ' ');
insert into t2(uid, name) select uid, name from t1;
insert into t1(uid, name) select uid, name from t2;
insert into t2(uid, name) select uid, name from t1;
insert into t1(uid, name) select uid, name from t2;
insert into t2(uid, name) select uid, name from t1;
insert into t1(uid, name) select uid, name from t2;
insert into t2(uid, name) select uid, name from t1;
insert into t1(uid, name) select uid, name from t2;
insert into t2(uid, name) select uid, name from t1;
insert into t1(uid, name) select uid, name from t2;
insert into t2(uid, name) select uid, name from t1;
insert into t2(uid, name) select uid, name from t1;
insert into t2(uid, name) select uid, name from t1;
insert into t2(uid, name) select uid, name from t1;
insert into t1(uid, name) select uid, name from t2;
delete from t2;
insert into t2(uid, name) values
(1, CHAR(64+1)),
(2, CHAR(64+2)),
(3, CHAR(64+3)),
(4, CHAR(64+4)),
(5, CHAR(64+5)),
(6, CHAR(64+6)),
(7, CHAR(64+7)),
(8, CHAR(64+8)),
(9, CHAR(64+9)),
(10, CHAR(64+10)),
(11, CHAR(64+11)),
(12, CHAR(64+12)),
(13, CHAR(64+13)),
(14, CHAR(64+14)),
(15, CHAR(64+15)),
(16, CHAR(64+16)),
(17, CHAR(64+17)),
(18, CHAR(64+18)),
(19, CHAR(64+19)),
(20, CHAR(64+20)),
(21, CHAR(64+21)),
(22, CHAR(64+22)),
(23, CHAR(64+23)),
(24, CHAR(64+24)),
(25, CHAR(64+25)),
(26, CHAR(64+26));
insert into t1(uid, name) select uid, name from t2 order by uid;
delete from t2;
insert into t2(id, uid, name) select id, uid, name from t1;
select count(*) from t1;
count(*)
1026
select count(*) from t2;
count(*)
1026
analyze table t1,t2;
Table Op Msg_type Msg_text
test.t1 analyze status OK
test.t2 analyze status Table is already up to date
explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range uid_index uid_index 4 NULL 112 100.00 Using where; Using MRR
1 SIMPLE t2 NULL ref uid_index uid_index 4 test.t1.uid 38 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`name` AS `name`,`test`.`t1`.`uid` AS `uid`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`name` AS `name`,`test`.`t2`.`uid` AS `uid` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`uid` = `test`.`t1`.`uid`) and (`test`.`t1`.`uid` > 0))
explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid > 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range uid_index uid_index 4 NULL 112 100.00 Using where; Using MRR
1 SIMPLE t2 NULL ref uid_index uid_index 4 test.t1.uid 38 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`name` AS `name`,`test`.`t1`.`uid` AS `uid`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`name` AS `name`,`test`.`t2`.`uid` AS `uid` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`uid` = `test`.`t1`.`uid`) and (`test`.`t1`.`uid` > 0))
explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid != 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range uid_index uid_index 4 NULL 113 100.00 Using where; Using MRR
1 SIMPLE t2 NULL ref uid_index uid_index 4 test.t1.uid 38 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`name` AS `name`,`test`.`t1`.`uid` AS `uid`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`name` AS `name`,`test`.`t2`.`uid` AS `uid` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`uid` = `test`.`t1`.`uid`) and (`test`.`t1`.`uid` <> 0))
explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid != 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range uid_index uid_index 4 NULL 113 100.00 Using where; Using MRR
1 SIMPLE t2 NULL ref uid_index uid_index 4 test.t1.uid 38 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`name` AS `name`,`test`.`t1`.`uid` AS `uid`,`test`.`t2`.`id` AS `id`,`test`.`t2`.`name` AS `name`,`test`.`t2`.`uid` AS `uid` from `test`.`t1` join `test`.`t2` where ((`test`.`t2`.`uid` = `test`.`t1`.`uid`) and (`test`.`t1`.`uid` <> 0))
select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0;
id name uid id name uid
1001 A 1 1001 A 1
1002 B 2 1002 B 2
1003 C 3 1003 C 3
1004 D 4 1004 D 4
1005 E 5 1005 E 5
1006 F 6 1006 F 6
1007 G 7 1007 G 7
1008 H 8 1008 H 8
1009 I 9 1009 I 9
1010 J 10 1010 J 10
1011 K 11 1011 K 11
1012 L 12 1012 L 12
1013 M 13 1013 M 13
1014 N 14 1014 N 14
1015 O 15 1015 O 15
1016 P 16 1016 P 16
1017 Q 17 1017 Q 17
1018 R 18 1018 R 18
1019 S 19 1019 S 19
1020 T 20 1020 T 20
1021 U 21 1021 U 21
1022 V 22 1022 V 22
1023 W 23 1023 W 23
1024 X 24 1024 X 24
1025 Y 25 1025 Y 25
1026 Z 26 1026 Z 26
select * from t1, t2 where t1.uid=t2.uid AND t1.uid != 0;
id name uid id name uid
1001 A 1 1001 A 1
1002 B 2 1002 B 2
1003 C 3 1003 C 3
1004 D 4 1004 D 4
1005 E 5 1005 E 5
1006 F 6 1006 F 6
1007 G 7 1007 G 7
1008 H 8 1008 H 8
1009 I 9 1009 I 9
1010 J 10 1010 J 10
1011 K 11 1011 K 11
1012 L 12 1012 L 12
1013 M 13 1013 M 13
1014 N 14 1014 N 14
1015 O 15 1015 O 15
1016 P 16 1016 P 16
1017 Q 17 1017 Q 17
1018 R 18 1018 R 18
1019 S 19 1019 S 19
1020 T 20 1020 T 20
1021 U 21 1021 U 21
1022 V 22 1022 V 22
1023 W 23 1023 W 23
1024 X 24 1024 X 24
1025 Y 25 1025 Y 25
1026 Z 26 1026 Z 26
drop table t1,t2;
create table t1 (x bigint unsigned not null);
insert into t1(x) values (0xfffffffffffffff0);
insert into t1(x) values (0xfffffffffffffff1);
select * from t1;
x
18446744073709551600
18446744073709551601
select count(*) from t1 where x>0;
count(*)
2
select count(*) from t1 where x=0;
count(*)
0
select count(*) from t1 where x<0;
count(*)
0
select count(*) from t1 where x < -16;
count(*)
0
select count(*) from t1 where x = -16;
count(*)
0
select count(*) from t1 where x > -16;
count(*)
2
select count(*) from t1 where x = 18446744073709551601;
count(*)
1
create table t2 (x bigint not null);
insert into t2(x) values (-16);
insert into t2(x) values (-15);
select * from t2;
x
-16
-15
select count(*) from t2 where x>0;
count(*)
0
select count(*) from t2 where x=0;
count(*)
0
select count(*) from t2 where x<0;
count(*)
2
select count(*) from t2 where x < -16;
count(*)
0
select count(*) from t2 where x = -16;
count(*)
1
select count(*) from t2 where x > -16;
count(*)
1
select count(*) from t2 where x = 18446744073709551601;
count(*)
0
drop table t1,t2;
create table t1 (x bigint unsigned not null primary key) engine=innodb;
insert into t1(x) values (0xfffffffffffffff0);
insert into t1(x) values (0xfffffffffffffff1);
select * from t1;
x
18446744073709551600
18446744073709551601
select count(*) from t1 where x>0;
count(*)
2
select count(*) from t1 where x=0;
count(*)
0
select count(*) from t1 where x<0;
count(*)
0
select count(*) from t1 where x < -16;
count(*)
0
select count(*) from t1 where x = -16;
count(*)
0
select count(*) from t1 where x > -16;
count(*)
2
select count(*) from t1 where x = 18446744073709551601;
count(*)
1
drop table t1;
create table t1 (a bigint unsigned);
create index t1i on t1(a);
insert into t1 select 18446744073709551615;
insert into t1 select 18446744073709551614;
explain select * from t1 where a <> -1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index t1i t1i 9 NULL 2 50.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` <> <cache>(-(1)))
select * from t1 where a <> -1;
a
18446744073709551614
18446744073709551615
explain select * from t1 where a > -1 or a < -1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index t1i t1i 9 NULL 2 75.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where ((`test`.`t1`.`a` > <cache>(-(1))) or (`test`.`t1`.`a` < <cache>(-(1))))
select * from t1 where a > -1 or a < -1;
a
18446744073709551614
18446744073709551615
explain select * from t1 where a > -1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index t1i t1i 9 NULL 2 50.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > <cache>(-(1)))
select * from t1 where a > -1;
a
18446744073709551614
18446744073709551615
explain select * from t1 where a < -1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` < -(1))
select * from t1 where a < -1;
a
drop table t1;
set names latin1;
create table t1 (a char(10), b text, key (a)) character set latin1;
INSERT INTO t1 (a) VALUES
('111'),('222'),('222'),('222'),('222'),('444'),('aaa'),('AAA'),('bbb');
explain select * from t1 where a='aaa';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref a a 11 const 2 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` = 'aaa')
explain select * from t1 where a=binary 'aaa';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 11 NULL 2 100.00 Using where; Using MRR
Warnings:
Warning 1739 Cannot use ref access on index 'a' due to type or collation conversion on field 'a'
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` = <cache>(cast('aaa' as char charset binary)))
explain select * from t1 where a='aaa' collate latin1_bin;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 11 NULL 2 100.00 Using where; Using MRR
Warnings:
Warning 1739 Cannot use ref access on index 'a' due to type or collation conversion on field 'a'
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` = <cache>(('aaa' collate latin1_bin)))
explain select * from t1 where a='aaa' collate latin1_german1_ci;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL a NULL NULL NULL 9 11.11 Using where
Warnings:
Warning 1739 Cannot use ref access on index 'a' due to type or collation conversion on field 'a'
Warning 1739 Cannot use range access on index 'a' due to type or collation conversion on field 'a'
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` = <cache>(('aaa' collate latin1_german1_ci)))
drop table t1;
CREATE TABLE t1 (
`CLIENT` char(3) character set latin1 collate latin1_bin NOT NULL default '000',
`ARG1` char(3) character set latin1 collate latin1_bin NOT NULL default '',
`ARG2` char(3) character set latin1 collate latin1_bin NOT NULL default '',
`FUNCTION` varchar(10) character set latin1 collate latin1_bin NOT NULL default '',
`FUNCTINT` int(11) NOT NULL default '0',
KEY `VERI_CLNT~2` (`ARG1`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
INSERT INTO t1 VALUES ('000',' 0',' 0','Text 001',0), ('000',' 0',' 1','Text 002',0),
('000',' 1',' 2','Text 003',0), ('000',' 2',' 3','Text 004',0),
('001',' 3',' 0','Text 017',0);
SELECT count(*) FROM t1 WHERE CLIENT='000' AND (ARG1 != ' 1' OR ARG1 != ' 2');
count(*)
4
SELECT count(*) FROM t1 WHERE CLIENT='000' AND (ARG1 != ' 2' OR ARG1 != ' 1');
count(*)
4
drop table t1;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
CREATE TABLE t2 (
pk1 int(11) NOT NULL,
pk2 int(11) NOT NULL,
pk3 int(11) NOT NULL,
pk4 int(11) NOT NULL,
filler char(82),
PRIMARY KEY (pk1,pk2,pk3,pk4)
) DEFAULT CHARSET=latin1;
insert into t2 select 1, A.a+10*B.a, 432, 44, 'fillerZ' from t1 A, t1 B;
INSERT INTO t2 VALUES (2621, 2635, 0, 0,'filler'), (2621, 2635, 1, 0,'filler'),
(2621, 2635, 10, 0,'filler'), (2621, 2635, 11, 0,'filler'),
(2621, 2635, 14, 0,'filler'), (2621, 2635, 1000015, 0,'filler');
SELECT * FROM t2
WHERE ((((pk4 =0) AND (pk1 =2621) AND (pk2 =2635)))
OR ((pk4 =1) AND (((pk1 IN ( 7, 2, 1 ))) OR (pk1 =522)) AND ((pk2 IN ( 0, 2635))))
) AND (pk3 >=1000000);
pk1 pk2 pk3 pk4 filler
2621 2635 1000015 0 filler
drop table t1, t2;
create table t1(a char(2), key(a(1)));
insert into t1 values ('x'), ('xx');
explain select a from t1 where a > 'x';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 2 NULL 2 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where (`test`.`t1`.`a` > 'x')
select a from t1 where a > 'x';
a
xx
drop table t1;
CREATE TABLE t1 (
OXID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
OXPARENTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT 'oxrootid',
OXLEFT int NOT NULL DEFAULT '0',
OXRIGHT int NOT NULL DEFAULT '0',
OXROOTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
PRIMARY KEY (OXID),
KEY OXNID (OXID),
KEY OXLEFT (OXLEFT),
KEY OXRIGHT (OXRIGHT),
KEY OXROOTID (OXROOTID)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_german2_ci;
INSERT INTO t1 VALUES
('d8c4177d09f8b11f5.52725521','oxrootid',1,40,'d8c4177d09f8b11f5.52725521'),
('d8c4177d151affab2.81582770','d8c4177d09f8b11f5.52725521',2,3,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d206a333d2.74422679','d8c4177d09f8b11f5.52725521',4,5,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d225791924.30714720','d8c4177d09f8b11f5.52725521',6,7,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d2380fc201.39666693','d8c4177d09f8b11f5.52725521',8,9,
'd8c4177d09f8b11f5.52725521'),
('d8c4177d24ccef970.14957924','d8c4177d09f8b11f5.52725521',10,11,
'd8c4177d09f8b11f5.52725521');
EXPLAIN
SELECT s.oxid FROM t1 v, t1 s
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE v NULL ref OXLEFT,OXRIGHT,OXROOTID OXROOTID 34 const 5 100.00 NULL
1 SIMPLE s NULL ref OXLEFT,OXROOTID OXROOTID 34 const 5 16.67 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`s`.`OXID` AS `oxid` from `test`.`t1` `v` join `test`.`t1` `s` where ((`test`.`s`.`OXROOTID` = 'd8c4177d09f8b11f5.52725521') and (`test`.`v`.`OXROOTID` = 'd8c4177d09f8b11f5.52725521') and (`test`.`s`.`OXLEFT` > `test`.`v`.`OXLEFT`) and (`test`.`s`.`OXLEFT` < `test`.`v`.`OXRIGHT`))
SELECT s.oxid FROM t1 v, t1 s
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
oxid
d8c4177d151affab2.81582770
d8c4177d206a333d2.74422679
d8c4177d225791924.30714720
d8c4177d2380fc201.39666693
d8c4177d24ccef970.14957924
DROP TABLE t1;
create table t1 (
c1 char(10), c2 char(10), c3 char(10), c4 char(10),
c5 char(10), c6 char(10), c7 char(10), c8 char(10),
c9 char(10), c10 char(10), c11 char(10), c12 char(10),
c13 char(10), c14 char(10), c15 char(10), c16 char(10),
index(c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12,c13,c14,c15,c16)
);
insert into t1 (c1) values ('1'),('1'),('1'),('1');
select * from t1 where
c1 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c2 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c3 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c4 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c5 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c6 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c7 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c8 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c9 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
and c10 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC");
c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 c11 c12 c13 c14 c15 c16
Warnings:
Warning 3170 Memory capacity of 8388608 bytes for 'range_optimizer_max_mem_size' exceeded. Range optimization was not done for this query.
drop table t1;
End of 4.1 tests
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
status varchar(20),
PRIMARY KEY (id),
KEY (status)
);
INSERT INTO t1 VALUES
(1,'B'), (2,'B'), (3,'B'), (4,'B'), (5,'B'), (6,'B'),
(7,'B'), (8,'B'), (9,'B'), (10,'B'), (11,'B'), (12,'B'),
(13,'B'), (14,'B'), (15,'B'), (16,'B'), (17,'B'), (18,'B'),
(19,'B'), (20,'B'), (21,'B'), (22,'B'), (23,'B'), (24,'B'),
(25,'A'), (26,'A'), (27,'A'), (28,'A'), (29,'A'), (30,'A'),
(31,'A'), (32,'A'), (33,'A'), (34,'A'), (35,'A'), (36,'A'),
(37,'A'), (38,'A'), (39,'A'), (40,'A'), (41,'A'), (42,'A'),
(43,'A'), (44,'A'), (45,'A'), (46,'A'), (47,'A'), (48,'A'),
(49,'A'), (50,'A'), (51,'A'), (52,'A'), (53,'C'), (54,'C'),
(55,'C'), (56,'C'), (57,'C'), (58,'C'), (59,'C'), (60,'C');
EXPLAIN SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range status status 23 NULL 11 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`status` AS `status` from `test`.`t1` where ((`test`.`t1`.`status` <> 'A') and (`test`.`t1`.`status` <> 'B'))
EXPLAIN SELECT * FROM t1 WHERE status NOT IN ('A','B');
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range status status 23 NULL 11 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`status` AS `status` from `test`.`t1` where (`test`.`t1`.`status` not in ('A','B'))
SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B';
id status
53 C
54 C
55 C
56 C
57 C
58 C
59 C
60 C
SELECT * FROM t1 WHERE status NOT IN ('A','B');
id status
53 C
54 C
55 C
56 C
57 C
58 C
59 C
60 C
EXPLAIN SELECT status FROM t1 WHERE status <> 'A' AND status <> 'B';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range status status 23 NULL 11 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`status` AS `status` from `test`.`t1` where ((`test`.`t1`.`status` <> 'A') and (`test`.`t1`.`status` <> 'B'))
EXPLAIN SELECT status FROM t1 WHERE status NOT IN ('A','B');
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range status status 23 NULL 11 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`status` AS `status` from `test`.`t1` where (`test`.`t1`.`status` not in ('A','B'))
EXPLAIN SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range status status 23 NULL 10 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`status` AS `status` from `test`.`t1` where (`test`.`t1`.`status` not between 'A' and 'B')
EXPLAIN SELECT * FROM t1 WHERE status < 'A' OR status > 'B';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range status status 23 NULL 10 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`status` AS `status` from `test`.`t1` where ((`test`.`t1`.`status` < 'A') or (`test`.`t1`.`status` > 'B'))
SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
id status
53 C
54 C
55 C
56 C
57 C
58 C
59 C
60 C
SELECT * FROM t1 WHERE status < 'A' OR status > 'B';
id status
53 C
54 C
55 C
56 C
57 C
58 C
59 C
60 C
DROP TABLE t1;
CREATE TABLE t1 (a int, b int, primary key(a,b));
INSERT INTO t1 VALUES
(1,1),(1,2),(1,3),(2,1),(2,2),(2,3),(3,1),(3,2),(3,3),(4,1),(4,2),(4,3);
CREATE VIEW v1 as SELECT a,b FROM t1 WHERE b=3;
EXPLAIN SELECT a,b FROM t1 WHERE a < 2 and b=3;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 4 NULL 4 10.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 3) and (`test`.`t1`.`a` < 2))
EXPLAIN SELECT a,b FROM v1 WHERE a < 2 and b=3;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 4 NULL 4 10.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 3) and (`test`.`t1`.`a` < 2))
EXPLAIN SELECT a,b FROM t1 WHERE a < 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 4 NULL 4 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` < 2)
EXPLAIN SELECT a,b FROM v1 WHERE a < 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 4 NULL 4 10.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 3) and (`test`.`t1`.`a` < 2))
SELECT a,b FROM t1 WHERE a < 2 and b=3;
a b
1 3
SELECT a,b FROM v1 WHERE a < 2 and b=3;
a b
1 3
DROP VIEW v1;
DROP TABLE t1;
CREATE TABLE t1 (name varchar(15) NOT NULL, KEY idx(name));
INSERT INTO t1 VALUES ('Betty'), ('Anna');
SELECT * FROM t1;
name
Anna
Betty
DELETE FROM t1 WHERE name NOT LIKE 'A%a';
SELECT * FROM t1;
name
Anna
DROP TABLE t1;
CREATE TABLE t1 (a int, KEY idx(a));
INSERT INTO t1 VALUES (NULL), (1), (2), (3);
SELECT * FROM t1;
a
NULL
1
2
3
DELETE FROM t1 WHERE NOT(a <=> 2);
SELECT * FROM t1;
a
2
DROP TABLE t1;
create table t1 (a int, b int, primary key(a,b));
create view v1 as select a, b from t1;
INSERT INTO `t1` VALUES
(0,0),(1,0),(2,0),(3,0),(4,0),(5,1),(6,1),(7,1),(8,1),(9,1),(10,2),(11,2),(12,2)
,(13,2),(14,2),(15,3),(16,3),(17,3),(18,3),(19,3);
explain select * from t1 where a in (3,4) and b in (1,2,3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 8 NULL # 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` in (3,4)) and (`test`.`t1`.`b` in (1,2,3)))
explain select * from v1 where a in (3,4) and b in (1,2,3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 8 NULL # 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` in (3,4)) and (`test`.`t1`.`b` in (1,2,3)))
explain select * from t1 where a between 3 and 4 and b between 1 and 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 8 NULL # 11.11 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` between 3 and 4) and (`test`.`t1`.`b` between 1 and 2))
explain select * from v1 where a between 3 and 4 and b between 1 and 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 8 NULL # 11.11 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` between 3 and 4) and (`test`.`t1`.`b` between 1 and 2))
drop view v1;
drop table t1;
create table t3 (a int);
insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (a varchar(10), filler char(200), key(a)) charset=binary;
insert into t1 values ('a','');
insert into t1 values ('a ','');
insert into t1 values ('a ', '');
insert into t1 select concat('a', 1000 + A.a + 10 * (B.a + 10 * C.a)), ''
from t3 A, t3 B, t3 C;
create table t2 (a varchar(10), filler char(200), key(a));
insert into t2 select * from t1;
explain select * from t1 where a between 'a' and 'a ';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 13 NULL # 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`filler` AS `filler` from `test`.`t1` where (`test`.`t1`.`a` between 'a' and 'a ')
explain select * from t1 where a = 'a' or a='a ';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 13 NULL # 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`filler` AS `filler` from `test`.`t1` where ((`test`.`t1`.`a` = 'a') or (`test`.`t1`.`a` = 'a '))
explain select * from t2 where a between 'a' and 'a ';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ref a a 13 const # 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`filler` AS `filler` from `test`.`t2` where (`test`.`t2`.`a` between 'a' and 'a ')
explain select * from t2 where a = 'a' or a='a ';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ref a a 13 const # 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`filler` AS `filler` from `test`.`t2` where ((`test`.`t2`.`a` = 'a') or (`test`.`t2`.`a` = 'a '))
update t1 set a='b' where a<>'a';
explain select * from t1 where a not between 'b' and 'b';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 13 NULL # 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`filler` AS `filler` from `test`.`t1` where (`test`.`t1`.`a` not between 'b' and 'b')
select a, hex(filler) from t1 where a not between 'b' and 'b';
a hex(filler)
a 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
drop table t1,t2,t3;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, key(a));
insert into t2 select 2*(A.a + 10*(B.a + 10*C.a)) from t1 A, t1 B, t1 C;
set @a="select * from t2 force index (a) where a NOT IN(0";
select count(*) from (select @a:=concat(@a, ',', a) from t2 ) Z;
count(*)
1000
set @a=concat(@a, ')');
insert into t2 values (11),(13),(15);
set @b= concat("explain ", @a);
prepare stmt1 from @b;
execute stmt1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL index a a 5 NULL 1003 50.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a` from `test`.`t2` FORCE INDEX (`a`) where (`test`.`t2`.`a` not in (0,0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224,226,228,230,232,234,236,238,240,242,244,246,248,250,252,254,256,258,260,262,264,266,268,270,272,274,276,278,280,282,284,286,288,290,292,294,296,298,300,302,304,306,308,310,312,314,316,318,320,322,324,326,328,330,332,334,336,338,340,342,344,346,348,350,352,354,356,358,360,362,364,366,368,370,372,374,376,378,380,382,384,386,388,390,392,394,396,398,400,402,404,406,408,410,412,414,416,418,420,422,424,426,428,430,432,434,436,438,440,442,444,446,448,450,452,454,456,458,460,462,464,466,468,470,472,474,476,478,480,482,484,486,488,490,492,494,496,498,500,502,504,506,508,510,512,514,516,518,520,522,524,526,528,530,532,534,536,538,540,542,544,546,548,550,552,554,556,558,560,562,564,566,568,570,572,574,576,578,580,582,584,586,588,590,592,594,596,598,600,602,604,606,608,610,612,614,616,618,620,622,624,626,628,630,632,634,636,638,640,642,644,646,648,650,652,654,656,658,660,662,664,666,668,670,672,674,676,678,680,682,684,686,688,690,692,694,696,698,700,702,704,706,708,710,712,714,716,718,720,722,724,726,728,730,732,734,736,738,740,742,744,746,748,750,752,754,756,758,760,762,764,766,768,770,772,774,776,778,780,782,784,786,788,790,792,794,796,798,800,802,804,806,808,810,812,814,816,818,820,822,824,826,828,830,832,834,836,838,840,842,844,846,848,850,852,854,856,858,860,862,864,866,868,870,872,874,876,878,880,882,884,886,888,890,892,894,896,898,900,902,904,906,908,910,912,914,916,918,920,922,924,926,928,930,932,934,936,938,940,942,944,946,948,950,952,954,956,958,960,962,964,966,968,970,972,974,976,978,980,982,984,986,988,990,992,994,996,998,1000,1002,1004,1006,1008,1010,1012,1014,1016,1018,1020,1022,1024,1026,1028,1030,1032,1034,1036,1038,1040,1042,1044,1046,1048,1050,1052,1054,1056,1058,1060,1062,1064,1066,1068,1070,1072,1074,1076,1078,1080,1082,1084,1086,1088,1090,1092,1094,1096,1098,1100,1102,1104,1106,1108,1110,1112,1114,1116,1118,1120,1122,1124,1126,1128,1130,1132,1134,1136,1138,1140,1142,1144,1146,1148,1150,1152,1154,1156,1158,1160,1162,1164,1166,1168,1170,1172,1174,1176,1178,1180,1182,1184,1186,1188,1190,1192,1194,1196,1198,1200,1202,1204,1206,1208,1210,1212,1214,1216,1218,1220,1222,1224,1226,1228,1230,1232,1234,1236,1238,1240,1242,1244,1246,1248,1250,1252,1254,1256,1258,1260,1262,1264,1266,1268,1270,1272,1274,1276,1278,1280,1282,1284,1286,1288,1290,1292,1294,1296,1298,1300,1302,1304,1306,1308,1310,1312,1314,1316,1318,1320,1322,1324,1326,1328,1330,1332,1334,1336,1338,1340,1342,1344,1346,1348,1350,1352,1354,1356,1358,1360,1362,1364,1366,1368,1370,1372,1374,1376,1378,1380,1382,1384,1386,1388,1390,1392,1394,1396,1398,1400,1402,1404,1406,1408,1410,1412,1414,1416,1418,1420,1422,1424,1426,1428,1430,1432,1434,1436,1438,1440,1442,1444,1446,1448,1450,1452,1454,1456,1458,1460,1462,1464,1466,1468,1470,1472,1474,1476,1478,1480,1482,1484,1486,1488,1490,1492,1494,1496,1498,1500,1502,1504,1506,1508,1510,1512,1514,1516,1518,1520,1522,1524,1526,1528,1530,1532,1534,1536,1538,1540,1542,1544,1546,1548,1550,1552,1554,1556,1558,1560,1562,1564,1566,1568,1570,1572,1574,1576,1578,1580,1582,1584,1586,1588,1590,1592,1594,1596,1598,1600,1602,1604,1606,1608,1610,1612,1614,1616,1618,1620,1622,1624,1626,1628,1630,1632,1634,1636,1638,1640,1642,1644,1646,1648,1650,1652,1654,1656,1658,1660,1662,1664,1666,1668,1670,1672,1674,1676,1678,1680,1682,1684,1686,1688,1690,1692,1694,1696,1698,1700,1702,1704,1706,1708,1710,1712,1714,1716,1718,1720,1722,1724,1726,1728,1730,1732,1734,1736,1738,1740,1742,1744,1746,1748,1750,1752,1754,1756,1758,1760,1762,1764,1766,1768,1770,1772,1774,1776,1778,1780,1782,1784,1786,1788,1790,1792,1794,1796,1798,1800,1802,1804,1806,1808,1810,1812,1814,1816,1818,1820,1822,1824,1826,1828,1830,1832,1834,1836,1838,1840,1842,1844,1846,1848,1850,1852,1854,1856,1858,1860,1862,1864,1866,1868,1870,1872,1874,1876,1878,1880,1882,1884,1886,1888,1890,1892,1894,1896,1898,1900,1902,1904,1906,1908,1910,1912,1914,1916,1918,1920,1922,1924,1926,1928,1930,1932,1934,1936,1938,1940,1942,1944,1946,1948,1950,1952,1954,1956,1958,1960,1962,1964,1966,1968,1970,1972,1974,1976,1978,1980,1982,1984,1986,1988,1990,1992,1994,1996,1998))
prepare stmt1 from @a;
execute stmt1;
a
11
13
15
drop table t1, t2;
CREATE TABLE t1 (
id int NOT NULL DEFAULT '0',
b int NOT NULL DEFAULT '0',
c int NOT NULL DEFAULT '0',
INDEX idx1(b,c), INDEX idx2(c));
INSERT INTO t1(id) VALUES (1), (2), (3), (4), (5), (6), (7), (8);
INSERT INTO t1(b,c) VALUES (3,4), (3,4);
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
SELECT * FROM t1 WHERE b<=3 AND 3<=c;
id b c
0 3 4
0 3 4
SELECT * FROM t1 WHERE 3 BETWEEN b AND c;
id b c
0 3 4
0 3 4
EXPLAIN SELECT * FROM t1 WHERE b<=3 AND 3<=c;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range idx1,idx2 idx2 4 NULL 3 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where ((`test`.`t1`.`b` <= 3) and (3 <= `test`.`t1`.`c`))
EXPLAIN SELECT * FROM t1 WHERE 3 BETWEEN b AND c;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range idx1,idx2 idx2 4 NULL 3 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where (3 between `test`.`t1`.`b` and `test`.`t1`.`c`)
SELECT * FROM t1 WHERE 0 < b OR 0 > c;
id b c
0 3 4
0 3 4
SELECT * FROM t1 WHERE 0 NOT BETWEEN b AND c;
id b c
0 3 4
0 3 4
EXPLAIN SELECT * FROM t1 WHERE 0 < b OR 0 > c;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index_merge idx1,idx2 idx1,idx2 4,4 NULL 4 100.00 Using sort_union(idx1,idx2); Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where ((0 < `test`.`t1`.`b`) or (0 > `test`.`t1`.`c`))
EXPLAIN SELECT * FROM t1 WHERE 0 NOT BETWEEN b AND c;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index_merge idx1,idx2 idx1,idx2 4,4 NULL 4 100.00 Using sort_union(idx1,idx2); Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where (0 not between `test`.`t1`.`b` and `test`.`t1`.`c`)
DROP TABLE t1;
CREATE TABLE t1 (
item char(20) NOT NULL default '',
started datetime NOT NULL default '0000-00-00 00:00:00',
price decimal(16,3) NOT NULL default '0.000',
PRIMARY KEY (item,started)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES
('A1','2005-11-01 08:00:00',1000),
('A1','2005-11-15 00:00:00',2000),
('A1','2005-12-12 08:00:00',3000),
('A2','2005-12-01 08:00:00',1000);
EXPLAIN SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref PRIMARY PRIMARY 20 const 2 33.33 Using where
Warnings:
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
Note 1003 /* select#1 */ select `test`.`t1`.`item` AS `item`,`test`.`t1`.`started` AS `started`,`test`.`t1`.`price` AS `price` from `test`.`t1` where ((`test`.`t1`.`item` = 'A1') and (`test`.`t1`.`started` <= '2005-12-01 24:00:00'))
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
item started price
A1 2005-11-01 08:00:00 1000.000
A1 2005-11-15 00:00:00 2000.000
Warnings:
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-02 00:00:00';
item started price
A1 2005-11-01 08:00:00 1000.000
A1 2005-11-15 00:00:00 2000.000
DROP INDEX `PRIMARY` ON t1;
EXPLAIN SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 4 25.00 Using where
Warnings:
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
Note 1003 /* select#1 */ select `test`.`t1`.`item` AS `item`,`test`.`t1`.`started` AS `started`,`test`.`t1`.`price` AS `price` from `test`.`t1` where ((`test`.`t1`.`item` = 'A1') and (`test`.`t1`.`started` <= '2005-12-01 24:00:00'))
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
item started price
A1 2005-11-01 08:00:00 1000.000
A1 2005-11-15 00:00:00 2000.000
Warnings:
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-02 00:00:00';
item started price
A1 2005-11-01 08:00:00 1000.000
A1 2005-11-15 00:00:00 2000.000
DROP TABLE t1;
BUG#32198 "Comparison of DATE with DATETIME still not using indexes correctly"
CREATE TABLE t1 (
id int(11) NOT NULL auto_increment,
dateval date default NULL,
PRIMARY KEY (id),
KEY dateval (dateval)
) AUTO_INCREMENT=173;
INSERT INTO t1 VALUES
(1,'2007-01-01'),(2,'2007-01-02'),(3,'2007-01-03'),(4,'2007-01-04'),
(5,'2007-01-05'),(6,'2007-01-06'),(7,'2007-01-07'),(8,'2007-01-08'),
(9,'2007-01-09'),(10,'2007-01-10'),(11,'2007-01-11');
This must use range access:
explain select * from t1 where dateval >= '2007-01-01 00:00:00' and dateval <= '2007-01-02 23:59:59';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range dateval dateval 4 NULL 2 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`id` AS `id`,`test`.`t1`.`dateval` AS `dateval` from `test`.`t1` where ((`test`.`t1`.`dateval` >= '2007-01-01 00:00:00') and (`test`.`t1`.`dateval` <= '2007-01-02 23:59:59'))
drop table t1;
CREATE TABLE t1 (
a varchar(32), index (a)
) DEFAULT CHARSET=latin1 COLLATE=latin1_bin;
INSERT INTO t1 VALUES
('B'), ('A'), ('A'), ('C'), ('B'), ('A'), ('A');
SELECT a FROM t1 WHERE a='b' OR a='B';
a
B
B
EXPLAIN SELECT a FROM t1 WHERE a='b' OR a='B';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 35 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where ((`test`.`t1`.`a` = 'b') or (`test`.`t1`.`a` = 'B'))
DROP TABLE t1;
CREATE TABLE t1 (f1 TINYINT(11) UNSIGNED NOT NULL, PRIMARY KEY (f1));
INSERT INTO t1 VALUES (127),(254),(0),(1),(255);
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 256;
COUNT(*)
5
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 256.0;
COUNT(*)
5
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 255;
COUNT(*)
4
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < -1;
COUNT(*)
0
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -1;
COUNT(*)
5
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
DROP TABLE t1;
CREATE TABLE t1 ( f1 TINYINT(11) NOT NULL, PRIMARY KEY (f1));
INSERT INTO t1 VALUES (127),(126),(0),(-128),(-127);
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 128;
COUNT(*)
5
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 128.0;
COUNT(*)
5
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 127;
COUNT(*)
4
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -129;
COUNT(*)
5
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -129.0;
COUNT(*)
5
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -128;
COUNT(*)
4
Warnings:
Warning 1681 'SQL_NO_CACHE' is deprecated and will be removed in a future release.
DROP TABLE t1;
create table t1 (a int);
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t2 (a int, b int, filler char(100));
insert into t2 select A.a + 10 * (B.a + 10 * C.a), 10, 'filler' from t1 A,
t1 B, t1 C where A.a < 5;
insert into t2 select 1000, b, 'filler' from t2;
alter table t2 add index (a,b);
select 'In following EXPLAIN the access method should be ref or range, #rows~=500 (and not 2)' Z;
Z
In following EXPLAIN the access method should be ref or range, #rows~=500 (and not 2)
explain select * from t2 where a=1000 and b<11;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL range a a 10 NULL 502 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`filler` AS `filler` from `test`.`t2` where ((`test`.`t2`.`a` = 1000) and (`test`.`t2`.`b` < 11))
drop table t1, t2;
CREATE TABLE t1( a INT, b INT, KEY( a, b ) );
CREATE TABLE t2( a INT, b INT, KEY( a, b ) );
CREATE TABLE t3( a INT, b INT, KEY( a, b ) );
INSERT INTO t1( a, b )
VALUES (0, 1), (1, 2), (1, 4), (2, 3), (5, 0), (9, 7);
INSERT INTO t2( a, b )
VALUES ( 1, 1), ( 2, 1), ( 3, 1), ( 4, 1), ( 5, 1),
( 6, 1), ( 7, 1), ( 8, 1), ( 9, 1), (10, 1),
(11, 1), (12, 1), (13, 1), (14, 1), (15, 1),
(16, 1), (17, 1), (18, 1), (19, 1), (20, 1);
INSERT INTO t2 SELECT a, 2 FROM t2 WHERE b = 1;
INSERT INTO t2 SELECT a, 3 FROM t2 WHERE b = 1;
INSERT INTO t2 SELECT -1, -1 FROM t2;
INSERT INTO t2 SELECT -1, -1 FROM t2;
INSERT INTO t2 SELECT -1, -1 FROM t2;
INSERT INTO t3
VALUES (1, 0), (2, 0), (3, 0), (4, 0), (5, 0),
(6, 0), (7, 0), (8, 0), (9, 0), (10, 0);
INSERT INTO t3 SELECT * FROM t3 WHERE a = 10;
INSERT INTO t3 SELECT * FROM t3 WHERE a = 10;
SELECT * FROM t1 WHERE
3 <= a AND a < 5 OR
5 < a AND b = 3 OR
3 <= a;
a b
5 0
9 7
EXPLAIN
SELECT * FROM t1 WHERE
3 <= a AND a < 5 OR
5 < a AND b = 3 OR
3 <= a;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 5 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (((3 <= `test`.`t1`.`a`) and (`test`.`t1`.`a` < 5)) or ((`test`.`t1`.`b` = 3) and (5 < `test`.`t1`.`a`)) or (3 <= `test`.`t1`.`a`))
SELECT * FROM t1 WHERE
3 <= a AND a < 5 OR
5 <= a AND b = 3 OR
3 <= a;
a b
5 0
9 7
EXPLAIN
SELECT * FROM t1 WHERE
3 <= a AND a < 5 OR
5 <= a AND b = 3 OR
3 <= a;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 5 NULL 4 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (((3 <= `test`.`t1`.`a`) and (`test`.`t1`.`a` < 5)) or ((`test`.`t1`.`b` = 3) and (5 <= `test`.`t1`.`a`)) or (3 <= `test`.`t1`.`a`))
SELECT * FROM t1 WHERE
3 <= a AND a <= 5 OR
5 <= a AND b = 3 OR
3 <= a;
a b
5 0
9 7
EXPLAIN
SELECT * FROM t1 WHERE
3 <= a AND a <= 5 OR
5 <= a AND b = 3 OR
3 <= a;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 5 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (((3 <= `test`.`t1`.`a`) and (`test`.`t1`.`a` <= 5)) or ((`test`.`t1`.`b` = 3) and (5 <= `test`.`t1`.`a`)) or (3 <= `test`.`t1`.`a`))
SELECT * FROM t1 WHERE
3 <= a AND a <= 5 OR
3 <= a;
a b
5 0
9 7
EXPLAIN
SELECT * FROM t1 WHERE
3 <= a AND a <= 5 OR
3 <= a;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 5 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (((3 <= `test`.`t1`.`a`) and (`test`.`t1`.`a` <= 5)) or (3 <= `test`.`t1`.`a`))
SELECT * FROM t2 WHERE
5 <= a AND a < 10 AND b = 1 OR
15 <= a AND a < 20 AND b = 3
OR
1 <= a AND b = 1;
a b
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 1
12 1
13 1
14 1
15 1
15 3
16 1
16 3
17 1
17 3
18 1
18 3
19 1
19 3
20 1
EXPLAIN
SELECT * FROM t2 WHERE
5 <= a AND a < 10 AND b = 1 OR
15 <= a AND a < 20 AND b = 3
OR
1 <= a AND b = 1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL range a a 10 NULL 50 27.10 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (((`test`.`t2`.`b` = 1) and (5 <= `test`.`t2`.`a`) and (`test`.`t2`.`a` < 10)) or ((`test`.`t2`.`b` = 3) and (15 <= `test`.`t2`.`a`) and (`test`.`t2`.`a` < 20)) or ((`test`.`t2`.`b` = 1) and (1 <= `test`.`t2`.`a`)))
SELECT * FROM t2 WHERE
5 <= a AND a < 10 AND b = 2 OR
15 <= a AND a < 20 AND b = 3
OR
1 <= a AND b = 1;
a b
1 1
2 1
3 1
4 1
5 1
5 2
6 1
6 2
7 1
7 2
8 1
8 2
9 1
9 2
10 1
11 1
12 1
13 1
14 1
15 1
15 3
16 1
16 3
17 1
17 3
18 1
18 3
19 1
19 3
20 1
EXPLAIN
SELECT * FROM t2 WHERE
5 <= a AND a < 10 AND b = 2 OR
15 <= a AND a < 20 AND b = 3
OR
1 <= a AND b = 1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL range a a 10 NULL 50 27.10 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (((`test`.`t2`.`b` = 2) and (5 <= `test`.`t2`.`a`) and (`test`.`t2`.`a` < 10)) or ((`test`.`t2`.`b` = 3) and (15 <= `test`.`t2`.`a`) and (`test`.`t2`.`a` < 20)) or ((`test`.`t2`.`b` = 1) and (1 <= `test`.`t2`.`a`)))
SELECT * FROM t3 WHERE
5 <= a AND a < 10 AND b = 3 OR
a < 5 OR
a < 10;
a b
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
EXPLAIN
SELECT * FROM t3 WHERE
5 <= a AND a < 10 AND b = 3 OR
a < 5 OR
a < 10;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 NULL range a a 5 NULL 8 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t3` where (((`test`.`t3`.`b` = 3) and (5 <= `test`.`t3`.`a`) and (`test`.`t3`.`a` < 10)) or (`test`.`t3`.`a` < 5) or (`test`.`t3`.`a` < 10))
DROP TABLE t1, t2, t3;
#
# Bug #47123: Endless 100% CPU loop with STRAIGHT_JOIN
#
CREATE TABLE t1(a INT, KEY(a));
INSERT INTO t1 VALUES (1), (NULL);
SELECT * FROM t1 WHERE a <> NULL and (a <> NULL or a <= NULL);
a
DROP TABLE t1;
#
# Bug#47925: regression of range optimizer and date comparison in 5.1.39!
#
CREATE TABLE t1 ( a DATE, KEY ( a ) );
CREATE TABLE t2 ( a DATETIME, KEY ( a ) );
# Make optimizer choose range scan
INSERT INTO t1 VALUES ('2009-09-22'), ('2009-09-22'), ('2009-09-22');
INSERT INTO t1 VALUES ('2009-09-23'), ('2009-09-23'), ('2009-09-23');
INSERT INTO t2 VALUES ('2009-09-22 12:00:00'), ('2009-09-22 12:00:00'),
('2009-09-22 12:00:00');
INSERT INTO t2 VALUES ('2009-09-23 12:00:00'), ('2009-09-23 12:00:00'),
('2009-09-23 12:00:00');
# DATE vs DATE
EXPLAIN
SELECT * FROM t1 WHERE a >= '2009/09/23';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
X X X NULL range a a X X X 100.00 X
Warnings:
X X X
SELECT * FROM t1 WHERE a >= '2009/09/23';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '20090923';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= 20090923;
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '2009-9-23';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '2009.09.23';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '2009:09:23';
a
2009-09-23
2009-09-23
2009-09-23
# DATE vs DATETIME
EXPLAIN
SELECT * FROM t2 WHERE a >= '2009/09/23';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
X X X NULL range a a X X X 100.00 X
Warnings:
X X X
SELECT * FROM t2 WHERE a >= '2009/09/23';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '2009/09/23';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '20090923';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= 20090923;
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '2009-9-23';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '2009.09.23';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '2009:09:23';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
# DATETIME vs DATETIME
EXPLAIN
SELECT * FROM t2 WHERE a >= '2009/09/23 12:00:00';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
X X X NULL range a a X X X 100.00 X
Warnings:
X X X
SELECT * FROM t2 WHERE a >= '2009/09/23 12:00:00';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '20090923120000';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= 20090923120000;
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '2009-9-23 12:00:00';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '2009.09.23 12:00:00';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
SELECT * FROM t2 WHERE a >= '2009:09:23 12:00:00';
a
2009-09-23 12:00:00
2009-09-23 12:00:00
2009-09-23 12:00:00
# DATETIME vs DATE
EXPLAIN
SELECT * FROM t1 WHERE a >= '2009/09/23 00:00:00';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
X X X NULL range a a X X X 100.00 X
Warnings:
X X X
SELECT * FROM t1 WHERE a >= '2009/09/23 00:00:00';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '2009/09/23 00:00:00';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '20090923000000';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= 20090923000000;
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '2009-9-23 00:00:00';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '2009.09.23 00:00:00';
a
2009-09-23
2009-09-23
2009-09-23
SELECT * FROM t1 WHERE a >= '2009:09:23 00:00:00';
a
2009-09-23
2009-09-23
2009-09-23
# Test of the new get_date_from_str implementation
# Behavior differs slightly between the trunk and mysql-pe.
# The former may give errors for the truncated values, while the latter
# gives warnings. The purpose of this test is not to interfere, and only
# preserve existing behavior.
SELECT str_to_date('2007-10-00', '%Y-%m-%d') >= '' AND
str_to_date('2007-10-00', '%Y-%m-%d') <= '2007/10/20';
str_to_date('2007-10-00', '%Y-%m-%d') >= '' AND
str_to_date('2007-10-00', '%Y-%m-%d') <= '2007/10/20'
1
Warnings:
Warning 1292 Truncated incorrect date value: ''
SELECT str_to_date('2007-20-00', '%Y-%m-%d') >= '2007/10/20' AND
str_to_date('2007-20-00', '%Y-%m-%d') <= '';
str_to_date('2007-20-00', '%Y-%m-%d') >= '2007/10/20' AND
str_to_date('2007-20-00', '%Y-%m-%d') <= ''
NULL
Warnings:
Warning 1292 Truncated incorrect date value: ''
Warning 1411 Incorrect datetime value: '2007-20-00' for function str_to_date
Warning 1411 Incorrect datetime value: '2007-20-00' for function str_to_date
SELECT str_to_date('2007-10-00', '%Y-%m-%d') BETWEEN '' AND '2007/10/20';
str_to_date('2007-10-00', '%Y-%m-%d') BETWEEN '' AND '2007/10/20'
1
Warnings:
Warning 1292 Truncated incorrect datetime value: ''
SELECT str_to_date('2007-20-00', '%Y-%m-%d') BETWEEN '2007/10/20' AND '';
str_to_date('2007-20-00', '%Y-%m-%d') BETWEEN '2007/10/20' AND ''
NULL
Warnings:
Warning 1411 Incorrect datetime value: '2007-20-00' for function str_to_date
SELECT str_to_date('', '%Y-%m-%d');
str_to_date('', '%Y-%m-%d')
0000-00-00
DROP TABLE t1, t2;
#
# Bug#48459: valgrind errors with query using 'Range checked for each
# record'
#
CREATE TABLE t1 (
a INT,
b CHAR(2),
c INT,
d INT,
KEY ( c ),
KEY ( d, a, b ( 2 ) ),
KEY ( b ( 1 ) )
);
INSERT INTO t1 VALUES ( NULL, 'a', 1, 2 ), ( NULL, 'a', 1, 2 ),
( 1, 'a', 1, 2 ), ( 1, 'a', 1, 2 );
CREATE TABLE t2 (
a INT,
c INT,
e INT,
KEY ( e )
);
INSERT INTO t2 VALUES ( 1, 1, NULL ), ( 1, 1, NULL );
# Should not give Valgrind warnings
SELECT 1
FROM t1, t2
WHERE t1.d <> '1' AND t1.b > '1'
AND t1.a = t2.a AND t1.c = t2.c;
1
1
1
1
1
DROP TABLE t1, t2;
#
# Bug #48665: sql-bench's insert test fails due to wrong result
#
CREATE TABLE t1 (a INT, b INT, PRIMARY KEY (a));
INSERT INTO t1 VALUES (0,0), (1,1);
EXPLAIN
SELECT * FROM t1 FORCE INDEX (PRIMARY)
WHERE (a>=1 AND a<=2) OR (a>=4 AND a<=5) OR (a>=0 AND a <=10);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
@ @ @ NULL range @ @ @ @ @ 100.00 @
Warnings:
@ @ @
# Should return 2 rows
SELECT * FROM t1 FORCE INDEX (PRIMARY)
WHERE (a>=1 AND a<=2) OR (a>=4 AND a<=5) OR (a>=0 AND a <=10);
a b
0 0
1 1
DROP TABLE t1;
#
# Bug #54802: 'NOT BETWEEN' evaluation is incorrect
#
CREATE TABLE t1 (c_key INT, c_notkey INT, KEY(c_key));
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3);
EXPLAIN SELECT * FROM t1 WHERE 2 NOT BETWEEN c_notkey AND c_key;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL c_key NULL NULL NULL 3 66.67 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`c_key` AS `c_key`,`test`.`t1`.`c_notkey` AS `c_notkey` from `test`.`t1` where (2 not between `test`.`t1`.`c_notkey` and `test`.`t1`.`c_key`)
SELECT * FROM t1 WHERE 2 NOT BETWEEN c_notkey AND c_key;
c_key c_notkey
1 1
3 3
DROP TABLE t1;
#
# Bug #57030: 'BETWEEN' evaluation is incorrect
#
CREATE TABLE t1(pk INT PRIMARY KEY, i4 INT);
CREATE UNIQUE INDEX i4_uq ON t1(i4);
INSERT INTO t1 VALUES (1,10), (2,20), (3,30);
EXPLAIN
SELECT * FROM t1 WHERE i4 BETWEEN 10 AND 10;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL const i4_uq i4_uq 5 const 1 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select '1' AS `pk`,'10' AS `i4` from `test`.`t1` where ('10' between 10 and 10)
SELECT * FROM t1 WHERE i4 BETWEEN 10 AND 10;
pk i4
1 10
EXPLAIN
SELECT * FROM t1 WHERE 10 BETWEEN i4 AND i4;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL const i4_uq i4_uq 5 const 1 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select '1' AS `pk`,'10' AS `i4` from `test`.`t1` where (10 between '10' and '10')
SELECT * FROM t1 WHERE 10 BETWEEN i4 AND i4;
pk i4
1 10
EXPLAIN
SELECT * FROM t1 WHERE 10 BETWEEN 10 AND i4;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range i4_uq i4_uq 5 NULL 3 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where (10 between 10 and `test`.`t1`.`i4`)
SELECT * FROM t1 WHERE 10 BETWEEN 10 AND i4;
pk i4
1 10
2 20
3 30
EXPLAIN
SELECT * FROM t1 WHERE 10 BETWEEN i4 AND 10;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range i4_uq i4_uq 5 NULL 1 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where (10 between `test`.`t1`.`i4` and 10)
SELECT * FROM t1 WHERE 10 BETWEEN i4 AND 10;
pk i4
1 10
EXPLAIN
SELECT * FROM t1 WHERE 10 BETWEEN 10 AND 10;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 3 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where 1
SELECT * FROM t1 WHERE 10 BETWEEN 10 AND 10;
pk i4
1 10
2 20
3 30
EXPLAIN
SELECT * FROM t1 WHERE 10 BETWEEN 11 AND 11;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where 0
SELECT * FROM t1 WHERE 10 BETWEEN 11 AND 11;
pk i4
EXPLAIN
SELECT * FROM t1 WHERE 10 BETWEEN 100 AND 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where 0
SELECT * FROM t1 WHERE 10 BETWEEN 100 AND 0;
pk i4
EXPLAIN
SELECT * FROM t1 WHERE i4 BETWEEN 100 AND 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where (`test`.`t1`.`i4` between 100 and 0)
SELECT * FROM t1 WHERE i4 BETWEEN 100 AND 0;
pk i4
EXPLAIN
SELECT * FROM t1 WHERE i4 BETWEEN 10 AND 99999999999999999;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range i4_uq i4_uq 5 NULL 3 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where (`test`.`t1`.`i4` between 10 and 99999999999999999)
SELECT * FROM t1 WHERE i4 BETWEEN 10 AND 99999999999999999;
pk i4
1 10
2 20
3 30
EXPLAIN
SELECT * FROM t1 WHERE i4 BETWEEN 999999999999999 AND 30;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where (`test`.`t1`.`i4` between 999999999999999 and 30)
SELECT * FROM t1 WHERE i4 BETWEEN 999999999999999 AND 30;
pk i4
EXPLAIN
SELECT * FROM t1 WHERE i4 BETWEEN 10 AND '20';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range i4_uq i4_uq 5 NULL 1 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4` from `test`.`t1` where (`test`.`t1`.`i4` between 10 and '20')
SELECT * FROM t1 WHERE i4 BETWEEN 10 AND '20';
pk i4
1 10
2 20
EXPLAIN
SELECT * FROM t1, t1 as t2 WHERE t2.pk BETWEEN t1.i4 AND t1.i4;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL i4_uq NULL NULL NULL 3 100.00 NULL
1 SIMPLE t2 NULL eq_ref PRIMARY PRIMARY 4 test.t1.i4 1 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4`,`test`.`t2`.`pk` AS `pk`,`test`.`t2`.`i4` AS `i4` from `test`.`t1` join `test`.`t1` `t2` where (`test`.`t2`.`pk` between `test`.`t1`.`i4` and `test`.`t1`.`i4`)
SELECT * FROM t1, t1 as t2 WHERE t2.pk BETWEEN t1.i4 AND t1.i4;
pk i4 pk i4
EXPLAIN
SELECT * FROM t1, t1 as t2 WHERE t1.i4 BETWEEN t2.pk AND t2.pk;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL i4_uq NULL NULL NULL 3 100.00 NULL
1 SIMPLE t2 NULL eq_ref PRIMARY PRIMARY 4 test.t1.i4 1 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`i4` AS `i4`,`test`.`t2`.`pk` AS `pk`,`test`.`t2`.`i4` AS `i4` from `test`.`t1` join `test`.`t1` `t2` where (`test`.`t1`.`i4` between `test`.`t2`.`pk` and `test`.`t2`.`pk`)
SELECT * FROM t1, t1 as t2 WHERE t1.i4 BETWEEN t2.pk AND t2.pk;
pk i4 pk i4
DROP TABLE t1;
#
# BUG#13519696 - 62940: SELECT RESULTS VARY WITH VERSION AND
# WITH/WITHOUT INDEX RANGE SCAN
#
create table t1 (id int unsigned not null auto_increment primary key);
insert into t1 values (null);
insert into t1 select null from t1;
insert into t1 select null from t1;
insert into t1 select null from t1;
insert into t1 select null from t1;
insert into t1 select null from t1;
insert into t1 select null from t1;
insert into t1 select null from t1;
insert into t1 select null from t1;
create table t2 (
id int unsigned not null auto_increment,
val decimal(5,3) not null,
primary key (id,val),
unique key (val,id),
unique key (id));
insert into t2 select null,id*0.0009 from t1;
select count(val) from t2 ignore index (val) where val > 0.1155;
count(val)
128
select count(val) from t2 force index (val) where val > 0.1155;
count(val)
128
drop table t2, t1;
#
# BUG#13453382 - REGRESSION SINCE 5.1.39, RANGE OPTIMIZER WRONG
# RESULTS WITH DECIMAL CONVERSION
#
create table t1 (a int,b int,c int,primary key (a,c));
insert into t1 values (1,1,2),(1,1,3),(1,1,4);
select convert(3, signed integer) > 2.9;
convert(3, signed integer) > 2.9
1
select * from t1 force index (primary) where a=1 and c>= 2.9;
a b c
1 1 3
1 1 4
select * from t1 ignore index (primary) where a=1 and c>= 2.9;
a b c
1 1 3
1 1 4
select * from t1 force index (primary) where a=1 and c> 2.9;
a b c
1 1 3
1 1 4
select * from t1 ignore index (primary) where a=1 and c> 2.9;
a b c
1 1 3
1 1 4
drop table t1;
#
# BUG#13463488 - 63437: CHAR & BETWEEN WITH INDEX RETURNS WRONG
# RESULT AFTER MYSQL 5.1.
#
CREATE TABLE t1(
F1 CHAR(5) NOT NULL,
F2 CHAR(5) NOT NULL,
F3 CHAR(5) NOT NULL,
PRIMARY KEY(F1),
INDEX IDX_F2(F2)
);
INSERT INTO t1 VALUES
('A','A','A'),('AA','AA','AA'),('AAA','AAA','AAA'),
('AAAA','AAAA','AAAA'),('AAAAA','AAAAA','AAAAA');
SELECT * FROM t1 WHERE F1 = 'A ';
F1 F2 F3
A A A
SELECT * FROM t1 IGNORE INDEX(PRIMARY) WHERE F1 = 'A ';
F1 F2 F3
A A A
SELECT * FROM t1 WHERE F1 >= 'A ';
F1 F2 F3
A A A
AA AA AA
AAA AAA AAA
AAAA AAAA AAAA
AAAAA AAAAA AAAAA
SELECT * FROM t1 WHERE F1 > 'A ';
F1 F2 F3
AA AA AA
AAA AAA AAA
AAAA AAAA AAAA
AAAAA AAAAA AAAAA
SELECT * FROM t1 WHERE F1 BETWEEN 'A ' AND 'AAAAA';
F1 F2 F3
A A A
AA AA AA
AAA AAA AAA
AAAA AAAA AAAA
AAAAA AAAAA AAAAA
SELECT * FROM t1 WHERE F2 BETWEEN 'A ' AND 'AAAAA';
F1 F2 F3
A A A
AA AA AA
AAA AAA AAA
AAAA AAAA AAAA
AAAAA AAAAA AAAAA
SELECT * FROM t1 WHERE F3 BETWEEN 'A ' AND 'AAAAA';
F1 F2 F3
A A A
AA AA AA
AAA AAA AAA
AAAA AAAA AAAA
AAAAA AAAAA AAAAA
SELECT * FROM t1 IGNORE INDEX(PRIMARY) WHERE F1 BETWEEN 'A ' AND
'AAAAA';
F1 F2 F3
A A A
AA AA AA
AAA AAA AAA
AAAA AAAA AAAA
AAAAA AAAAA AAAAA
DROP TABLE t1;
End of 5.1 tests
CREATE TABLE t1 (c1 DECIMAL(10,0),INDEX(c1));
INSERT INTO t1 VALUES (1),(2),(3);
SELECT c1 FROM t1 WHERE c1 >= 'A' GROUP BY 1;
c1
1
2
3
Warnings:
Warning 1366 Incorrect decimal value: 'A' for column 'c1' at row 1
Warning 1292 Truncated incorrect DECIMAL value: 'A'
DROP TABLE t1;
create table t1 (a int,b int,key (b),key (a),key (b,a));
insert into t1(a,b) values (1,2),(3,4),(5,6),(7,8);
create table t2 (c int);
insert into t2(c) values (1),(5),(6),(7),(8);
select 1 from (select c from t1,t2 where b >= 1 and a <=> c group by 1 limit 1) as d1;
1
1
drop table t1, t2;
#
# Bug #26106: Wrong plan may be chosen when there are several possible
# range and ref accesses
#
# Note: The fix for this bug has been reverted. The code will no longer
# select the optimal plan for the two following test queries. This is
# not due to a bug but due to minor differences in range estimates
# produced by the storage engine.
CREATE TABLE t1(
a INT,
b INT,
KEY k ( a ),
KEY l ( a, b )
);
INSERT INTO t1(a) VALUES (1);
INSERT INTO t1
VALUES (2,3),(2,3),(2,3),(2,3),(2,3),(2,3),(2,3),(2,3),(2,3),(2,3);
INSERT INTO t1 SELECT 3, 4 FROM t1 WHERE a = 2 AND b = 3;
INSERT INTO t1 SELECT 4, 1 FROM t1 WHERE a = 2 AND b = 3;
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
INSERT INTO t1 VALUES (1, 2);
INSERT INTO t1 SELECT a, b FROM t1 WHERE a=1 AND b=2;
INSERT INTO t1 SELECT a, b FROM t1 WHERE a=1 AND b=2;
INSERT INTO t1 SELECT a, b FROM t1 WHERE a=1 AND b=2;
INSERT INTO t1 SELECT a, b FROM t1 WHERE a=1 AND b=2;
INSERT INTO t1 SELECT a, b FROM t1 WHERE a=1 AND b=2;
INSERT INTO t1 SELECT a, b FROM t1 WHERE a=1 AND b=2;
INSERT INTO t1 SELECT a, b FROM t1 WHERE a=1 AND b=2;
# This must use range over index l, not k.
# Update: Due to patch being reverted and minor differences in
# range estimates k is selected.
EXPLAIN SELECT * FROM t1 WHERE a = 1 AND b >= 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref k,l k 5 const 134 33.33 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` = 1) and (`test`.`t1`.`b` >= 2))
CREATE TABLE t2(
a INT,
b INT,
c INT,
KEY k ( a ),
KEY l ( a, b ),
KEY m ( b ),
KEY n ( a, c )
);
INSERT INTO t2(a) VALUES (1);
INSERT INTO t2
VALUES (2,3,3),(2,3,3),(2,3,3),(2,3,3),(2,3,3),
(2,3,3),(2,3,3),(2,3,3),(2,3,3),(2,3,3);
INSERT INTO t2 SELECT 3, 4, 4 FROM t2 WHERE a = 2 AND b = 3;
INSERT INTO t2 SELECT 4, 1, 1 FROM t2 WHERE a = 2 AND b = 3;
ANALYZE TABLE t2;
Table Op Msg_type Msg_text
test.t2 analyze status OK
INSERT INTO t2 VALUES (1, 2, 2);
INSERT INTO t2 SELECT a, b, c FROM t2 WHERE a=1 AND b=2;
INSERT INTO t2 SELECT a, b, c FROM t2 WHERE a=1 AND b=2;
INSERT INTO t2 SELECT a, b, c FROM t2 WHERE a=1 AND b=2;
INSERT INTO t2 SELECT a, b, c FROM t2 WHERE a=1 AND b=2;
INSERT INTO t2 SELECT a, b, c FROM t2 WHERE a=1 AND b=2;
INSERT INTO t2 SELECT a, b, c FROM t2 WHERE a=1 AND b=2;
INSERT INTO t2 VALUES (1, 1, 2);
# This must use range over index l, not n.
# Update: Due to patch being reverted and minor differences in
# range estimates k is selected.
EXPLAIN SELECT * FROM t2 WHERE a = 1 AND b >= 2 AND c >= 2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL ref k,l,m,n k 5 const 66 29.16 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t2` where ((`test`.`t2`.`a` = 1) and (`test`.`t2`.`b` >= 2) and (`test`.`t2`.`c` >= 2))
DROP TABLE t1, t2;
#
# BUG#11765831: 'RANGE ACCESS' MAY INCORRECTLY FILTER
# AWAY QUALIFYING ROWS
#
CREATE TABLE t10(
K INT NOT NULL AUTO_INCREMENT,
I INT, J INT,
PRIMARY KEY(K),
KEY(I,J)
);
INSERT INTO t10(I,J) VALUES (6,1),(6,2),(6,3),(6,4),(6,5),
(6,6),(6,7),(6,8),(6,9),(6,0);
CREATE TABLE t100 LIKE t10;
INSERT INTO t100(I,J) SELECT X.I, X.K+(10*Y.K) FROM t10 AS X,t10 AS Y;
INSERT INTO t100(I,J) VALUES(8,26);
EXPLAIN SELECT * FROM t100 WHERE I <> 6 OR (I <> 8 AND J = 5);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t100 NULL range I I 10 NULL 4 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t100`.`K` AS `K`,`test`.`t100`.`I` AS `I`,`test`.`t100`.`J` AS `J` from `test`.`t100` where ((`test`.`t100`.`I` <> 6) or ((`test`.`t100`.`J` = 5) and (`test`.`t100`.`I` <> 8)))
SELECT * FROM t100 WHERE I <> 6 OR (I <> 8 AND J = 5);
K I J
101 8 26
DROP TABLE t10,t100;
#
# BUG#12698916 - JOIN QUERY GIVES WRONG RESULT AT 2ND EXEC. OR
# AFTER FLUSH TABLES [-INT VS NULL]
#
CREATE TABLE t1 (col_int INT, pk INT) ENGINE=InnoDB STATS_PERSISTENT=0;
INSERT INTO t1 VALUES (-100,1),(1,6);
CREATE TABLE t2 (
col_int_key INT,
col_varchar VARCHAR(100) NOT NULL DEFAULT "DEFAULT",
pk INT NOT NULL,
PRIMARY KEY (pk),
KEY (col_int_key)
) ENGINE=InnoDB STATS_PERSISTENT=0;
INSERT INTO t2 VALUES
(1,"GOOD",1),(100,"",2),(200,"",3),(300,"",4),(400,"",5),(500,"",8);
EXPLAIN SELECT t1.*,t2.* FROM t1 straight_join t2
ON t2.col_int_key = t1.col_int WHERE t2.pk < t1.pk;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using where
1 SIMPLE t2 NULL ref PRIMARY,col_int_key col_int_key 5 test.t1.col_int 1 33.33 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`col_int` AS `col_int`,`test`.`t1`.`pk` AS `pk`,`test`.`t2`.`col_int_key` AS `col_int_key`,`test`.`t2`.`col_varchar` AS `col_varchar`,`test`.`t2`.`pk` AS `pk` from `test`.`t1` straight_join `test`.`t2` where ((`test`.`t2`.`col_int_key` = `test`.`t1`.`col_int`) and (`test`.`t2`.`pk` < `test`.`t1`.`pk`))
SELECT t1.*,t2.* FROM t1 straight_join t2
ON t2.col_int_key = t1.col_int WHERE t2.pk < t1.pk;
col_int pk col_int_key col_varchar pk
1 6 1 GOOD 1
# need FLUSH so that InnoDB statistics change and thus plan changes
FLUSH TABLES;
EXPLAIN SELECT t1.*,t2.* FROM t1 straight_join t2
ON t2.col_int_key = t1.col_int WHERE t2.pk < t1.pk;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 NULL
1 SIMPLE t2 NULL ALL PRIMARY,col_int_key NULL NULL NULL 6 33.33 Range checked for each record (index map: 0x3)
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`col_int` AS `col_int`,`test`.`t1`.`pk` AS `pk`,`test`.`t2`.`col_int_key` AS `col_int_key`,`test`.`t2`.`col_varchar` AS `col_varchar`,`test`.`t2`.`pk` AS `pk` from `test`.`t1` straight_join `test`.`t2` where ((`test`.`t2`.`col_int_key` = `test`.`t1`.`col_int`) and (`test`.`t2`.`pk` < `test`.`t1`.`pk`))
SELECT t1.*,t2.* FROM t1 straight_join t2
ON t2.col_int_key = t1.col_int WHERE t2.pk < t1.pk;
col_int pk col_int_key col_varchar pk
1 6 1 GOOD 1
DROP TABLE t1,t2;
#
# Bug#12694872 -
# VALGRIND: 18,816 BYTES IN 196 BLOCKS ARE DEFINITELY LOST IN UNIQUE::GET
#
CREATE TABLE t1 (
pk INTEGER AUTO_INCREMENT,
col_int_nokey INTEGER NOT NULL,
col_int_key INTEGER NOT NULL,
col_date_key DATE NOT NULL,
col_varchar_key VARCHAR(1) NOT NULL,
col_varchar_nokey VARCHAR(1) NOT NULL,
PRIMARY KEY (pk),
KEY (col_int_key),
KEY (col_date_key),
KEY (col_varchar_key, col_int_key)
);
INSERT INTO t1 (
col_int_key,
col_int_nokey,
col_date_key,
col_varchar_key,
col_varchar_nokey
) VALUES
(0, 4, '2011-08-25', 'j', 'j'),
(8, 6, '2004-09-18', 'v', 'v'),
(1, 3, '2009-12-01', 'c', 'c'),
(8, 5, '2004-12-17', 'm', 'm'),
(9, 3, '2000-03-14', 'd', 'd'),
(6, 2, '2006-05-25', 'y', 'y'),
(1, 9, '2008-01-23', 't', 't'),
(6, 3, '2007-06-18', 'd', 'd'),
(2, 8, '2002-10-13', 's', 's'),
(4, 1, '1900-01-01', 'r', 'r'),
(8, 8, '1959-04-25', 'm', 'm'),
(4, 8, '2006-03-09', 'b', 'b'),
(4, 5, '2001-06-05', 'x', 'x'),
(7, 7, '2006-05-28', 'g', 'g'),
(4, 5, '2001-04-19', 'p', 'p'),
(1, 1, '1900-01-01', 'q', 'q'),
(9, 6, '2004-08-20', 'w', 'w'),
(4, 2, '2004-10-10', 'd', 'd'),
(8, 9, '2000-04-02', 'e', 'e')
;
ALTER TABLE t1 DISABLE KEYS;
SELECT table2.col_date_key AS field1,
CONCAT ( table2.col_varchar_nokey, table1.col_varchar_nokey ) AS field2
FROM ( t1 AS table1 INNER JOIN t1 AS table2
ON (( table2.pk <> table1.pk ) AND
( table2.pk >= table1.col_int_nokey ) ) )
WHERE ( table1.pk > 226 AND
table1.pk < ( 226 + 102 ) OR
( table1.col_int_key > 226 AND
table1.col_int_key < ( 226 + 36 ) OR
( table1.col_varchar_key <= 'h' OR
table1.col_int_key > 226 AND
table1.col_int_key < ( 226 + 227 ) )
)
)
;
field1 field2
1900-01-01 qb
1900-01-01 qc
1900-01-01 qd
1900-01-01 qd
1900-01-01 qd
1900-01-01 qe
1900-01-01 qg
1900-01-01 rb
1900-01-01 rc
1900-01-01 rd
1900-01-01 rd
1900-01-01 rd
1900-01-01 re
1900-01-01 rg
1959-04-25 mb
1959-04-25 mc
1959-04-25 md
1959-04-25 md
1959-04-25 md
1959-04-25 me
1959-04-25 mg
2000-03-14 dc
2000-03-14 dd
2000-03-14 dd
2000-04-02 eb
2000-04-02 ec
2000-04-02 ed
2000-04-02 ed
2000-04-02 ed
2000-04-02 eg
2001-04-19 pb
2001-04-19 pc
2001-04-19 pd
2001-04-19 pd
2001-04-19 pd
2001-04-19 pe
2001-04-19 pg
2001-06-05 xb
2001-06-05 xc
2001-06-05 xd
2001-06-05 xd
2001-06-05 xd
2001-06-05 xe
2001-06-05 xg
2002-10-13 sb
2002-10-13 sc
2002-10-13 sd
2002-10-13 sd
2002-10-13 sd
2002-10-13 se
2002-10-13 sg
2004-08-20 wb
2004-08-20 wc
2004-08-20 wd
2004-08-20 wd
2004-08-20 wd
2004-08-20 we
2004-08-20 wg
2004-09-18 vd
2004-10-10 db
2004-10-10 dc
2004-10-10 dd
2004-10-10 dd
2004-10-10 de
2004-10-10 dg
2004-12-17 mc
2004-12-17 md
2004-12-17 md
2004-12-17 md
2006-03-09 bc
2006-03-09 bd
2006-03-09 bd
2006-03-09 bd
2006-03-09 be
2006-03-09 bg
2006-05-25 yc
2006-05-25 yd
2006-05-25 yd
2006-05-25 yd
2006-05-28 gb
2006-05-28 gc
2006-05-28 gd
2006-05-28 gd
2006-05-28 gd
2006-05-28 ge
2007-06-18 db
2007-06-18 dc
2007-06-18 dd
2007-06-18 dd
2007-06-18 dg
2008-01-23 tc
2008-01-23 td
2008-01-23 td
2008-01-23 td
2008-01-23 tg
2009-12-01 cd
2009-12-01 cd
2009-12-01 cd
ALTER TABLE t1 ENABLE KEYS;
CREATE TABLE t2 SELECT table2.col_date_key AS field1,
CONCAT ( table2.col_varchar_nokey, table1.col_varchar_nokey ) AS field2
FROM ( t1 AS table1 INNER JOIN t1 AS table2
ON (( table2.pk <> table1.pk ) AND
( table2.pk >= table1.col_int_nokey ) ) )
WHERE ( table1.pk > 226 AND
table1.pk < ( 226 + 102 ) OR
( table1.col_int_key > 226 AND
table1.col_int_key < ( 226 + 36 ) OR
( table1.col_varchar_key <= 'h' OR
table1.col_int_key > 226 AND
table1.col_int_key < ( 226 + 227 ) )
)
)
;
SELECT * FROM t2
WHERE (field1, field2) IN (SELECT table2.col_date_key AS field1,
CONCAT ( table2.col_varchar_nokey, table1.col_varchar_nokey ) AS field2
FROM ( t1 AS table1 INNER JOIN t1 AS table2
ON (( table2.pk <> table1.pk ) AND
( table2.pk >= table1.col_int_nokey ) ) )
WHERE ( table1.pk > 226 AND
table1.pk < ( 226 + 102 ) OR
( table1.col_int_key > 226 AND
table1.col_int_key < ( 226 + 36 ) OR
( table1.col_varchar_key <= 'h' OR
table1.col_int_key > 226 AND
table1.col_int_key < ( 226 + 227 ) )
)
)
);
field1 field2
1900-01-01 qb
1900-01-01 qc
1900-01-01 qd
1900-01-01 qd
1900-01-01 qd
1900-01-01 qe
1900-01-01 qg
1900-01-01 rb
1900-01-01 rc
1900-01-01 rd
1900-01-01 rd
1900-01-01 rd
1900-01-01 re
1900-01-01 rg
1959-04-25 mb
1959-04-25 mc
1959-04-25 md
1959-04-25 md
1959-04-25 md
1959-04-25 me
1959-04-25 mg
2000-03-14 dc
2000-03-14 dd
2000-03-14 dd
2000-04-02 eb
2000-04-02 ec
2000-04-02 ed
2000-04-02 ed
2000-04-02 ed
2000-04-02 eg
2001-04-19 pb
2001-04-19 pc
2001-04-19 pd
2001-04-19 pd
2001-04-19 pd
2001-04-19 pe
2001-04-19 pg
2001-06-05 xb
2001-06-05 xc
2001-06-05 xd
2001-06-05 xd
2001-06-05 xd
2001-06-05 xe
2001-06-05 xg
2002-10-13 sb
2002-10-13 sc
2002-10-13 sd
2002-10-13 sd
2002-10-13 sd
2002-10-13 se
2002-10-13 sg
2004-08-20 wb
2004-08-20 wc
2004-08-20 wd
2004-08-20 wd
2004-08-20 wd
2004-08-20 we
2004-08-20 wg
2004-09-18 vd
2004-10-10 db
2004-10-10 dc
2004-10-10 dd
2004-10-10 dd
2004-10-10 de
2004-10-10 dg
2004-12-17 mc
2004-12-17 md
2004-12-17 md
2004-12-17 md
2006-03-09 bc
2006-03-09 bd
2006-03-09 bd
2006-03-09 bd
2006-03-09 be
2006-03-09 bg
2006-05-25 yc
2006-05-25 yd
2006-05-25 yd
2006-05-25 yd
2006-05-28 gb
2006-05-28 gc
2006-05-28 gd
2006-05-28 gd
2006-05-28 gd
2006-05-28 ge
2007-06-18 db
2007-06-18 dc
2007-06-18 dd
2007-06-18 dd
2007-06-18 dg
2008-01-23 tc
2008-01-23 td
2008-01-23 td
2008-01-23 td
2008-01-23 tg
2009-12-01 cd
2009-12-01 cd
2009-12-01 cd
DROP TABLE t1, t2;
#
# BUG#12912171 - ASSERTION FAILED: QUICK->HEAD->READ_SET ==
# SAVE_READ_SET
#
CREATE TABLE t1 (
a INT,
b INT,
c INT,
PRIMARY KEY (c,a), KEY (a),KEY (a)
) ENGINE=INNODB PARTITION BY KEY () PARTITIONS 2;
Warnings:
Warning 1831 Duplicate index 'a_2' defined on the table 'test.t1'. This is deprecated and will be disallowed in a future release.
INSERT INTO t1 VALUES (1,5,1),(2,4,1),(3,3,1),(4,2,1),(5,1,1);
UPDATE t1 SET b = 0, c=1 WHERE a <=>0;
SELECT * FROM t1;
a b c
1 5 1
2 4 1
3 3 1
4 2 1
5 1 1
DROP TABLE t1;
#
# BUG#13256446 - ASSERTION QUICK->HEAD->READ_SET ==
# SAVE_READ_SET' FAILED IN OPT_RANGE.CC:1606
#
CREATE TABLE t1 (
f1 INT AUTO_INCREMENT,
f2 INT,
f3 INT,
f4 INT,
PRIMARY KEY (f1),KEY(f2)
) ENGINE=INNODB;
CREATE ALGORITHM=MERGE VIEW v2 AS SELECT f1,f2,f3,f4 FROM t1 WHERE f2=103;
INSERT INTO t1 VALUES (154,0,NULL,0),(0,NULL,9,0),
(NULL,102,NULL,3),(0,3,NULL,0), (9,0,NULL,0),(0,9,NULL,157);
SELECT * FROM v2;
f1 f2 f3 f4
UPDATE v2 SET f4=0, f2=NULL, f1=NULL WHERE f1 > 16 ORDER BY f1;
SELECT * FROM v2;
f1 f2 f3 f4
DROP TABLE t1;
DROP VIEW v2;
CREATE TABLE t1 (
f1 INT AUTO_INCREMENT,
f2 INT,
f3 INT,
f4 INT,
PRIMARY KEY (f1),KEY(f2)
) ENGINE=INNODB;
INSERT INTO t1 VALUES(1,NULL,NULL,0), (2,2,0,3), (9,0,107,18),
(10,0,0,0), (231,0,0,0), (232,0,8,0), (234,0,0,NULL), (235,8,0,3);
CREATE ALGORITHM=MERGE VIEW v3 AS SELECT f1,f2,f3,f4 FROM t1 WHERE f1<=85 ;
SELECT * FROM v3;
f1 f2 f3 f4
1 NULL NULL 0
2 2 0 3
9 0 107 18
10 0 0 0
UPDATE v3 SET f3=0, f4=4 WHERE f2=68 ORDER BY f1;
SELECT * FROM v3;
f1 f2 f3 f4
1 NULL NULL 0
2 2 0 3
9 0 107 18
10 0 0 0
DROP TABLE t1;
DROP VIEW v3;
#
# BUG#13731380: RANGE OPTIMIZER CALLS RECORDS_IN_RANGE() FOR OPEN RANGE
#
CREATE TABLE t1 (pk INT PRIMARY KEY);
INSERT INTO t1 VALUES (1),(3),(5);
SELECT * FROM t1 WHERE pk <> 3 OR pk < 4;
pk
1
3
5
DROP TABLE t1;
#
# BUG#13803810: TOO FEW ROWS RETURNED FOR RANGE ACCESS IN
# VARCHAR INDEX USING DATETIME VALUE
CREATE TABLE t1 (a DATETIME);
INSERT INTO t1 VALUES ('2001-01-01 00:00:00');
INSERT INTO t1 VALUES ('2001-01-01 11:22:33');
CREATE TABLE t2 (b VARCHAR(64), KEY (b));
INSERT INTO t2 VALUES ('2001-01-01');
INSERT INTO t2 VALUES ('2001.01.01');
INSERT INTO t2 VALUES ('2001#01#01');
INSERT INTO t2 VALUES ('2001-01-01 00:00:00');
INSERT INTO t2 VALUES ('2001-01-01 11:22:33');
# range/ref access cannot be used for this query
EXPLAIN SELECT * FROM t2 WHERE b=CAST('2001-01-01' AS DATE);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL index b b 67 NULL 5 20.00 Using where; Using index
Warnings:
Warning 1739 Cannot use ref access on index 'b' due to type or collation conversion on field 'b'
Warning 1739 Cannot use range access on index 'b' due to type or collation conversion on field 'b'
Note 1003 /* select#1 */ select `test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`b` = <cache>(cast('2001-01-01' as date)))
SELECT * FROM t2 WHERE b=CAST('2001-01-01' AS DATE);
b
2001#01#01
2001-01-01
2001-01-01 00:00:00
2001.01.01
# range/ref access cannot be used for any of the queries below.
# See BUG#13814468 about 'Range checked for each record'
EXPLAIN SELECT * FROM t1, t2 WHERE a=b ORDER BY BINARY a, BINARY b;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
1 SIMPLE t2 NULL index b b 67 NULL 5 20.00 Using where; Using index; Using join buffer (Block Nested Loop)
Warnings:
Warning 1739 Cannot use ref access on index 'b' due to type or collation conversion on field 'b'
Warning 1739 Cannot use range access on index 'b' due to type or collation conversion on field 'b'
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t1`.`a` = `test`.`t2`.`b`) order by cast(`test`.`t1`.`a` as char charset binary),cast(`test`.`t2`.`b` as char charset binary)
SELECT * FROM t1, t2 WHERE a=b ORDER BY BINARY a, BINARY b;
a b
2001-01-01 00:00:00 2001#01#01
2001-01-01 00:00:00 2001-01-01
2001-01-01 00:00:00 2001-01-01 00:00:00
2001-01-01 00:00:00 2001.01.01
2001-01-01 11:22:33 2001-01-01 11:22:33
EXPLAIN SELECT * FROM t1, t2 WHERE b=a ORDER BY BINARY a, BINARY b;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort
1 SIMPLE t2 NULL index b b 67 NULL 5 20.00 Using where; Using index; Using join buffer (Block Nested Loop)
Warnings:
Warning 1739 Cannot use ref access on index 'b' due to type or collation conversion on field 'b'
Warning 1739 Cannot use range access on index 'b' due to type or collation conversion on field 'b'
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t1` join `test`.`t2` where (`test`.`t2`.`b` = `test`.`t1`.`a`) order by cast(`test`.`t1`.`a` as char charset binary),cast(`test`.`t2`.`b` as char charset binary)
SELECT * FROM t1, t2 WHERE b=a ORDER BY BINARY a, BINARY b;
a b
2001-01-01 00:00:00 2001#01#01
2001-01-01 00:00:00 2001-01-01
2001-01-01 00:00:00 2001-01-01 00:00:00
2001-01-01 00:00:00 2001.01.01
2001-01-01 11:22:33 2001-01-01 11:22:33
DROP TABLE t1,t2;
#
# WL#7019: Add support for row value constructors in in predicates to
# range optimizer
#
CREATE TABLE t1 (a INT, b INT, c INT, KEY x(a, b));
INSERT INTO t1 VALUES (2, 2, 2), (3, 3, 3), (4, 4, 4), (5, 5, 5), (6, 6, 6),
(7, 7, 7), (8, 8, 8), (9, 9, 9);
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 SELECT * FROM t1;
INSERT INTO t1 VALUES (0, 0, 0), (1, 1, 1);
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
CREATE TABLE t2 (a INT, b INT, c INT, d INT, KEY x(a, b));
INSERT INTO t2 VALUES (2, 2, 2, 2), (3, 3, 3, 3), (4, 4, 4, 4), (5, 5, 5, 5),
(6, 6, 6, 6), (7, 7, 7, 7), (8, 8, 8, 8), (9, 9, 9, 9);
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 VALUES (0, 0, 0, 0), (1, 1, 1, 1);
ANALYZE TABLE t2;
Table Op Msg_type Msg_text
test.t2 analyze status OK
CREATE TABLE t3 (a INT, b INT, c INT, d INT, KEY x(a, b, c));
INSERT INTO t3 VALUES (2, 2, 2, 2), (3, 3, 3, 3), (4, 4, 4, 4), (5, 5, 5, 5),
(6, 6, 6, 6), (7, 7, 7, 7), (8, 8, 8, 8), (9, 9, 9, 9);
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 SELECT * FROM t3;
INSERT INTO t3 VALUES (0, 0, 0, 0), (1, 1, 1, 1);
ANALYZE TABLE t3;
Table Op Msg_type Msg_text
test.t3 analyze status OK
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN ((NULL, NULL), (NULL, NULL));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`) in ((NULL,NULL),(NULL,NULL)))
EXPLAIN SELECT a, b FROM t1 WHERE (a = 0 AND b = 0) OR (a = 1 AND b = 1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (((`test`.`t1`.`b` = 0) and (`test`.`t1`.`a` = 0)) or ((`test`.`t1`.`b` = 1) and (`test`.`t1`.`a` = 1)))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE (a = 0 AND b = 0) OR (a = 1 AND b = 1);
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN ((0, 0));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref x x 10 const,const 1 100.00 Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 0) and (`test`.`t1`.`a` = 0))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE (a, b) IN ((0, 0));
a b
0 0
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_last 0
Handler_read_next 1
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN ((0, 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`) in (<cache>((0,0)),<cache>((1,1))))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE (a, b) IN ((0, 0), (1, 1));
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b, c FROM t2 WHERE (a, b, c) IN ((0, 0, 0), (1, 1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL range x x 10 NULL 2 20.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c` from `test`.`t2` where ((`test`.`t2`.`a`,`test`.`t2`.`b`,`test`.`t2`.`c`) in (<cache>((0,0,0)),<cache>((1,1,1))))
FLUSH STATUS;
SELECT a, b, c FROM t2 WHERE (a, b, c) IN ((0, 0, 0), (1, 1, 1));
a b c
0 0 0
1 1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 2
Handler_read_rnd_next 0
EXPLAIN SELECT a, b, c FROM t3 WHERE (a, b, c) IN ((0, 0, 0), (1, 1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 NULL range x x 15 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b`,`test`.`t3`.`c` AS `c` from `test`.`t3` where ((`test`.`t3`.`a`,`test`.`t3`.`b`,`test`.`t3`.`c`) in (<cache>((0,0,0)),<cache>((1,1,1))))
FLUSH STATUS;
SELECT a, b, c FROM t3 WHERE (a, b, c) IN ((0, 0, 0), (1, 1, 1));
a b c
0 0 0
1 1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t1 WHERE a = 0 AND b = 0 OR (a, b) IN ((1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (((`test`.`t1`.`b` = 0) and (`test`.`t1`.`a` = 0)) or ((`test`.`t1`.`b` = 1) and (`test`.`t1`.`a` = 1)))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE a = 0 AND b = 0 OR (a, b) IN ((1, 1));
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN ((1, 1)) OR a = 0 AND b = 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (((`test`.`t1`.`b` = 1) and (`test`.`t1`.`a` = 1)) or ((`test`.`t1`.`b` = 0) and (`test`.`t1`.`a` = 0)))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE (a, b) IN ((1, 1)) OR a = 0 AND b = 0;
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t2 WHERE (a, b, c) IN ((1, 1, 1)) OR a = 0 AND b = 0 AND c = 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL range x x 10 NULL 2 19.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (((`test`.`t2`.`c` = 1) and (`test`.`t2`.`b` = 1) and (`test`.`t2`.`a` = 1)) or ((`test`.`t2`.`c` = 0) and (`test`.`t2`.`b` = 0) and (`test`.`t2`.`a` = 0)))
FLUSH STATUS;
SELECT a, b FROM t2 WHERE (a, b, c) IN ((1, 1, 1)) OR a = 0 AND b = 0 AND c = 0;
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 2
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t3 WHERE (a, b, c) IN ((1, 1, 1)) OR a = 0 AND b = 0 AND c = 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t3 NULL range x x 15 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t3`.`a` AS `a`,`test`.`t3`.`b` AS `b` from `test`.`t3` where (((`test`.`t3`.`c` = 1) and (`test`.`t3`.`b` = 1) and (`test`.`t3`.`a` = 1)) or ((`test`.`t3`.`c` = 0) and (`test`.`t3`.`b` = 0) and (`test`.`t3`.`a` = 0)))
FLUSH STATUS;
SELECT a, b FROM t3 WHERE (a, b, c) IN ((1, 1, 1)) OR a = 0 AND b = 0 AND c = 0;
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN (((SELECT 1), 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref x x 10 const,const 1 100.00 Using index
Warnings:
Note 1249 Select 2 was reduced during optimization
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 1) and (`test`.`t1`.`a` = 1))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE (a, b) IN (((SELECT 1), 1));
a b
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_last 0
Handler_read_next 1
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN (('0', 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`) in (<cache>(('0',0)),<cache>((1,1))))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE (a, b) IN (('0', 0), (1, 1));
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
SET @v = 0;
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN ((@v, 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`) in (<cache>(((@`v`),0)),<cache>((1,1))))
FLUSH STATUS;
SELECT a, b FROM t1 WHERE (a, b) IN ((@v, 0), (1, 1));
a b
0 0
1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
CREATE TABLE t4 ( a INT, b INT );
INSERT INTO t4 VALUES (1, 1), (2, 2), (3, 3), (4, 4), (5, 5);
INSERT INTO t4 SELECT a + 5, b + 5 FROM t4;
INSERT INTO t4 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t4;
INSERT INTO t4 SELECT * FROM t4;
# Inner table in a nested-loops join
EXPLAIN
SELECT t4.*, t1.a, t1.b
FROM t4 JOIN t1 USING(a, b)
WHERE (t4.a, t4.b) IN ((1, 1), (0, 0));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t4 NULL ALL NULL NULL NULL NULL 640 2.00 Using where
1 SIMPLE t1 NULL ref x x 10 test.t4.a,test.t4.b 410 100.00 Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t4` join `test`.`t1` where ((`test`.`t1`.`b` = `test`.`t4`.`b`) and (`test`.`t1`.`a` = `test`.`t4`.`a`) and ((`test`.`t4`.`a`,`test`.`t4`.`b`) in (<cache>((1,1)),<cache>((0,0)))))
# Join on IN
EXPLAIN
SELECT t4.*, t1.a, t1.b
FROM t4 JOIN t1
WHERE (t1.a, t1.b) IN ((t4.a, t4.b), (0, 0));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t4 NULL ALL NULL NULL NULL NULL 640 100.00 NULL
1 SIMPLE t1 NULL index x x 10 NULL 4098 2.00 Using where; Using index; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t4` join `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`) in ((`test`.`t4`.`a`,`test`.`t4`.`b`),<cache>((0,0))))
EXPLAIN
SELECT t4.*, t1.a, t1.b
FROM t4 JOIN t1
WHERE (t1.a, t1.b) IN ((t4.a, t4.b), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t4 NULL ALL NULL NULL NULL NULL 640 100.00 NULL
1 SIMPLE t1 NULL index x x 10 NULL 4098 2.00 Using where; Using index; Using join buffer (Block Nested Loop)
Warnings:
Note 1003 /* select#1 */ select `test`.`t4`.`a` AS `a`,`test`.`t4`.`b` AS `b`,`test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t4` join `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`) in ((`test`.`t4`.`a`,`test`.`t4`.`b`),<cache>((1,1))))
#
# Tests for non-deterministic functions.
#
CREATE FUNCTION f1() RETURNS INT NOT DETERMINISTIC RETURN 1;
# The statement immediately below should not use range access.
EXPLAIN SELECT a, b FROM t1 WHERE (a, b, c) IN ((0, 0, 0), (f1(), 1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL x NULL NULL NULL 4098 0.20 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`,`test`.`t1`.`c`) in (<cache>((0,0,0)),(`f1`(),1,1)))
EXPLAIN SELECT a, b FROM t1 WHERE (a, b, c) IN ((0, 0, 0), (1, f1(), 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 20.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`,`test`.`t1`.`c`) in (<cache>((0,0,0)),(1,`f1`(),1)))
EXPLAIN SELECT a, b FROM t1 WHERE (a, b, c) IN ((0, 0, 0), (1, 1, f1()));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 10 NULL 2 20.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`,`test`.`t1`.`c`) in (<cache>((0,0,0)),(1,1,`f1`())))
# The statement immediately below should not use range access.
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN ((f1(), 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index NULL x 10 NULL 4098 1.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 1) and (`test`.`t1`.`a` = `f1`()))
DROP FUNCTION f1;
# The statement immediately below should not use range access.
EXPLAIN
SELECT a, b
FROM t1 AS t1o
WHERE EXISTS ( SELECT 1 FROM t1 WHERE (a, b) IN ((t1o.a, t1o.b)) );
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 PRIMARY t1o NULL index NULL x 10 NULL 4098 100.00 Using where; Using index
2 DEPENDENT SUBQUERY t1 NULL ref x x 10 test.t1o.a,test.t1o.b 410 100.00 Using index
Warnings:
Note 1276 Field or reference 'test.t1o.a' of SELECT #2 was resolved in SELECT #1
Note 1276 Field or reference 'test.t1o.b' of SELECT #2 was resolved in SELECT #1
Note 1003 /* select#1 */ select `test`.`t1o`.`a` AS `a`,`test`.`t1o`.`b` AS `b` from `test`.`t1` `t1o` where exists(/* select#2 */ select 1 from `test`.`t1` where ((`test`.`t1`.`a` = `test`.`t1o`.`a`) and (`test`.`t1`.`b` = `test`.`t1o`.`b`)))
#
# Tests of dynamic range access
#
CREATE TABLE t5 (a int, b int, KEY (a));
INSERT INTO t5 VALUES (1, 1), (2, 1), (3, 1), (4, 1), (5, 1), (6, 1);
CREATE TABLE t6 (a int, b int, KEY (a));
INSERT INTO t6 VALUES (3, 2), (4, 2), (100, 100), (101, 201), (102, 102);
CREATE TABLE t7 (a int, b int, KEY (a, b));
INSERT INTO t7 VALUES (1, 1), (2, 2), (1000, 1000), (1001, 1001), (1002, 1002),
(1003, 1003), (1004, 1004);
EXPLAIN SELECT *
FROM t5 JOIN t6 ON t5.a = t6.a JOIN t7
WHERE t7.a IN (t5.b, t6.b);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t6 NULL ALL a NULL NULL NULL 5 100.00 NULL
1 SIMPLE t5 NULL ALL a NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
1 SIMPLE t7 NULL ALL a NULL NULL NULL 7 28.57 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 /* select#1 */ select `test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b` from `test`.`t5` join `test`.`t6` join `test`.`t7` where ((`test`.`t5`.`a` = `test`.`t6`.`a`) and (`test`.`t7`.`a` in (`test`.`t5`.`b`,`test`.`t6`.`b`)))
FLUSH STATUS;
SELECT *
FROM t5 JOIN t6 ON t5.a = t6.a JOIN t7
WHERE t7.a IN (t5.b, t6.b);
a b a b a b
3 1 3 2 1 1
3 1 3 2 2 2
4 1 4 2 1 1
4 1 4 2 2 2
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 4
Handler_read_last 0
Handler_read_next 4
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 13
EXPLAIN SELECT *
FROM t5 JOIN t6 ON t5.a = t6.a JOIN t7
WHERE (t7.a, t7.b) IN ((t5.b, 1), (t6.b, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t6 NULL ALL a NULL NULL NULL 5 100.00 NULL
1 SIMPLE t5 NULL ALL a NULL NULL NULL 6 16.67 Using where; Using join buffer (Block Nested Loop)
1 SIMPLE t7 NULL ALL a NULL NULL NULL 7 14.29 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 /* select#1 */ select `test`.`t5`.`a` AS `a`,`test`.`t5`.`b` AS `b`,`test`.`t6`.`a` AS `a`,`test`.`t6`.`b` AS `b`,`test`.`t7`.`a` AS `a`,`test`.`t7`.`b` AS `b` from `test`.`t5` join `test`.`t6` join `test`.`t7` where ((`test`.`t5`.`a` = `test`.`t6`.`a`) and ((`test`.`t7`.`a`,`test`.`t7`.`b`) in ((`test`.`t5`.`b`,1),(`test`.`t6`.`b`,1))))
FLUSH STATUS;
SELECT *
FROM t5 JOIN t6 ON t5.a = t6.a JOIN t7
WHERE (t7.a, t7.b) IN ((t5.b, 1), (t6.b, 1));
a b a b a b
3 1 3 2 1 1
4 1 4 2 1 1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 4
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 13
#
# Regression tests of the worklog below.
#
# Make sure we process IN predicates only.
# The code around this is very unclear.
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) != (1, 1);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index x x 10 NULL 4098 99.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`a` <> 1) or (`test`.`t1`.`b` <> 1))
# This should give us a ref scan, as it always did.
EXPLAIN SELECT a, b FROM t1 WHERE (a, b) IN ((0, 0));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref x x 10 const,const 1 100.00 Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`b` = 0) and (`test`.`t1`.`a` = 0))
EXPLAIN SELECT a, b FROM t1 WHERE (a, c) IN ((0, 0));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref x x 5 const 1 10.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where ((`test`.`t1`.`c` = 0) and (`test`.`t1`.`a` = 0))
# ref scan on x(a).
EXPLAIN SELECT * FROM t1 WHERE (a, c) IN ((0, 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range x x 5 NULL 2 20.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b`,`test`.`t1`.`c` AS `c` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`c`) in (<cache>((0,0)),<cache>((1,1))))
DROP TABLE t1, t2, t3, t4, t5, t6, t7;
#
# Bug#17635476: CRASH IN GET_MM_PARTS() OR ASSERT IN
# GET_FUNC_MM_TREE_FROM_IN_PREDICATE()
#
CREATE TABLE t1 (
a INT,
b INT,
KEY (a)
) ENGINE = INNODB;
SELECT DISTINCT a FROM t1 WHERE (a, b) IN ((0, 0), (1, 1));
a
INSERT INTO t1 VALUES (0, 0), (1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6),
(7, 7), (8, 8), (9, 9);
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
CREATE TABLE t2 (
a INT,
b INT,
KEY (a, b)
);
INSERT INTO t2 SELECT * FROM t1;
ANALYZE TABLE t2;
Table Op Msg_type Msg_text
test.t2 analyze status Table is already up to date
EXPLAIN SELECT DISTINCT a FROM t1 WHERE (a, b) IN ((0, 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range a a 5 NULL 2 20.00 Using where
Warnings:
Note 1003 /* select#1 */ select distinct `test`.`t1`.`a` AS `a` from `test`.`t1` where ((`test`.`t1`.`a`,`test`.`t1`.`b`) in (<cache>((0,0)),<cache>((1,1))))
FLUSH STATUS;
SELECT DISTINCT a FROM t1 WHERE (a, b) IN ((0, 0), (1, 1));
a
0
1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
EXPLAIN SELECT DISTINCT a FROM t2 WHERE (a, b) IN ((0, 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL range a a 10 NULL 2 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select distinct `test`.`t2`.`a` AS `a` from `test`.`t2` where ((`test`.`t2`.`a`,`test`.`t2`.`b`) in (<cache>((0,0)),<cache>((1,1))))
FLUSH STATUS;
SELECT DISTINCT a FROM t2 WHERE (a, b) IN ((0, 0), (1, 1));
a
0
1
SHOW STATUS LIKE 'Handler_read_%';
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 2
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
# Should not use range scan.
EXPLAIN SELECT DISTINCT a FROM t1 WHERE (NULL, b) IN ((0, 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL index a a 5 NULL 10 20.00 Using where
Warnings:
Note 1003 /* select#1 */ select distinct `test`.`t1`.`a` AS `a` from `test`.`t1` where ((NULL,`test`.`t1`.`b`) in (<cache>((0,0)),<cache>((1,1))))
# Should not use range scan.
EXPLAIN SELECT DISTINCT a FROM t2 WHERE (NULL, b) IN ((0, 0), (1, 1));
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 NULL index a a 10 NULL 10 20.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select distinct `test`.`t2`.`a` AS `a` from `test`.`t2` where ((NULL,`test`.`t2`.`b`) in (<cache>((0,0)),<cache>((1,1))))
DROP TABLE t1, t2;
#
# Bug#17755540 VALGRIND ERROR WHEN SETTING UP ROW COMPARATORS
#
CREATE TABLE t2 (a INT, b INT, c INT, d INT, KEY x(a, b));
INSERT INTO t2 VALUES (2, 2, 2, 2), (3, 3, 3, 3), (4, 4, 4, 4), (5, 5, 5, 5),
(6, 6, 6, 6), (7, 7, 7, 7), (8, 8, 8, 8), (9, 9, 9, 9);
INSERT INTO t2 SELECT * FROM t2;
INSERT INTO t2 VALUES (0, 0, 0, 0), (1, 1, 1, 1);
ANALYZE TABLE t2;
Table Op Msg_type Msg_text
test.t2 analyze status OK
SELECT a, b FROM t2 WHERE (a, b) IN ((0, 0), (1, 1));
a b
0 0
1 1
DROP TABLE t2;
#
# BUG#18364815: OPTIMIZER PREFERS TABLE SCAN WHEN
# USING "IN" WITH VALUE OF DIFFERENT TYPE
#
CREATE TABLE t1 (a INT PRIMARY KEY, b INT);
INSERT INTO t1 VALUES (1,1), (2,1), (3,1), (4,1), (5,1), (6,1);
EXPLAIN SELECT * FROM t1 WHERE a IN (1, 2);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` in (1,2))
EXPLAIN SELECT * FROM t1 WHERE a IN (1, "2");
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 4 NULL 2 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (`test`.`t1`.`a` in (1,'2'))
SELECT * FROM t1 WHERE a IN (1, 2);
a b
1 1
2 1
SELECT * FROM t1 WHERE a IN (1, "2");
a b
1 1
2 1
DROP TABLE t1;
#
# Bug#18715670
# CRASH IN DECIMAL_ACTUAL_FRACTION COMPARING DECIMAL TO NULLS
#
CREATE TABLE t1(n DECIMAL(39,19) NOT NULL, KEY(n)) engine=innodb;
INSERT INTO t1 SET n=0;
SELECT 1 FROM t1 WHERE n NOT IN(NULL, NULL);
1
DROP TABLE t1;
#
# Bug#18759597 MISSING ROWS ON WHERE ..
# IN QUERY WITH VARIABLES AND CONCAT
#
CREATE TABLE t1 (
col_varchar_key varchar(2),
KEY col_varchar_key (col_varchar_key)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES ('n'),('xm');
SET @var1 = 't', @var2 = 'him',
@var3 = 'n', @var4 = 'n',
@var5 = 'n', @var6 = 'g',
@var7 = 'b', @var8 = 'o',
@var9 = 'm', @var10 = 'xm', @var11 = 'u'
;
SELECT col_varchar_key AS field1
FROM t1
WHERE ( col_varchar_key, col_varchar_key ) IN (
('m', @var1 ),
('n', @var3 ),
('a', @var5 ),
('l', @var7 ),
(CONCAT('x', @var9 ), @var10 )
);
field1
n
xm
DROP TABLE t1;
#
# Bug#18535226 DEBUG CRASH ON QUICK_RANGE_SELECT::RESET
#
SET @old_tmp_table_size=@@tmp_table_size;
SET tmp_table_size=1024;
CREATE TABLE t1 (
pk INT NOT NULL,
col_int_key INT,
col_date_key date,
col_date_nokey date,
col_time_key time,
col_time_nokey time,
col_datetime_key datetime,
col_datetime_nokey datetime,
col_varchar_key varchar(1),
col_varchar_nokey varchar(1),
PRIMARY KEY (pk),
KEY col_int_key (col_int_key)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES
(5,0,'2001-05-06','2001-05-06','16:21:18','16:21:18','2001-11-08 21:02:12',
'2001-11-08 21:02:12','x','x'),(6,7,'2006-03-03','2006-03-03','18:56:33',
'18:56:33','2003-04-01 00:00:00','2003-04-01 00:00:00','i','i'),
(7,7,'2007-12-28','2007-12-28',NULL,NULL,'1900-01-01 00:00:00',
'1900-01-01 00:00:00','e','e'),(8,1,'2004-10-20','2004-10-20','09:29:08',
'09:29:08','2007-07-12 00:00:00','2007-07-12 00:00:00','p','p'),
(9,7,'2008-04-09','2008-04-09','19:11:10','19:11:10',
'2005-04-04 01:21:01','2005-04-04 01:21:01','s','s'),
(10,1,'2005-12-25','2005-12-25','11:57:26','11:57:26',
'1900-01-01 00:00:00','1900-01-01 00:00:00','j','j');
SELECT alias1.col_int_key
FROM
( SELECT SQ1_alias1.* FROM t1 AS SQ1_alias1, t1 AS SQ1_alias2 ) AS alias1,
(SELECT 7 AS col_int_nokey) AS alias2
WHERE
alias2.col_int_nokey = alias1.pk
AND alias1.col_varchar_nokey < alias1.col_varchar_key
ORDER BY alias1.col_varchar_key;
col_int_key
DROP TABLE t1;
SET tmp_table_size=@old_tmp_table_size;
SET sql_mode = default;
#
# Bug#19585938 Crash in get_full_func_mm_tree with null
# item_field->table_ref
#
CREATE TABLE t1(id INTEGER, col1 INTEGER, col2 INTEGER, PRIMARY KEY(id));
INSERT INTO t1 VALUES (1,2,3), (3,2,1);
SELECT (SELECT 1
FROM t1
WHERE SUM(1) < id
) AS c
FROM t1
GROUP BY col1;
c
1
SELECT (SELECT 1
FROM t1
WHERE id > SUM(1)
) AS c
FROM t1
GROUP BY col1;
c
1
SELECT (SELECT 1
FROM t1
WHERE SUM(1) BETWEEN id AND id+1
) AS c
FROM t1
GROUP BY col1;
c
1
SELECT (SELECT 1
FROM t1
WHERE id BETWEEN SUM(1) AND SUM(5)
) AS c
FROM t1
GROUP BY col1;
c
1
SELECT (SELECT 1
FROM t1
WHERE SUM(1) BETWEEN COUNT(*) AND id
) AS c
FROM t1
GROUP BY col1;
c
1
DROP TABLE t1;
#
# Bug#21415791 VALGRIND ERROR (CONDITIONAL JUMP) AT KEY_AND
# (RANGE_OPT_PARAM*, SEL_ARG*, SEL_AR
#
CREATE TABLE t1 (
col_varchar_10 VARCHAR(10),
pk INTEGER NOT NULL,
col_int_key INTEGER,
PRIMARY KEY (pk),
KEY col_int_key (col_int_key),
KEY col_varchar_10 (col_varchar_10)
) ENGINE=InnoDB;
INSERT INTO t1 (
pk, col_varchar_10, col_int_key) VALUES
(1, 'ttttt', 0), (2, 'zzzzz', 0), (3, 'ggggg', 0),
(4, 'hhhhh', 0), (5, 'kkkkk', 0), (6, 'lllll', 0);
CREATE TABLE t2 (
pk INTEGER NOT NULL,
col_varchar_10 VARCHAR(10),
PRIMARY KEY (pk),
KEY col_varchar_10 (col_varchar_10)
) ENGINE=InnoDB;
INSERT INTO t2 (
pk, col_varchar_10) VALUES
(1, '00000'), (2, '00000'), (3, '44444'), (4, '00000'),
(5, NULL), (6, NULL), (7, NULL);
SELECT COUNT(t1.col_int_key)
FROM t2 RIGHT OUTER JOIN t1 ON t2.col_varchar_10 <= t1.col_varchar_10
WHERE t2.pk <> 4 OR t2.pk != t1.col_int_key AND t2.pk <> 1000;
COUNT(t1.col_int_key)
24
DROP TABLE t1, t2;
#
# Bug #20229614: OR CONDITIONS ON MULTI-COLUMN INDEX MAY NOT USE ALL
# INDEX COLUMNS TO FILTER ROWS
#
CREATE TABLE t1 (
c1 INT,
c2 INT,
c3 INT,
PRIMARY KEY(c1, c2, c3)
) ENGINE=INNODB;
INSERT INTO t1 VALUES (1, 1, 1), (1, 1, 2), (1, 1, 3),
(1, 1, 4), (1, 1, 5);
INSERT INTO t1 SELECT c1, 2, c3 FROM t1;
INSERT INTO t1 SELECT c1, 3, c3 FROM t1 WHERE c2 = 1;
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze status OK
SELECT COUNT(*) FROM t1;
COUNT(*)
15
EXPLAIN SELECT c1, c2, c3
FROM t1
WHERE (c1 = 1 AND c2 = 1 AND c3 = 1) OR
(c1 = 1 AND c2 = 2 AND c3 = 2) OR
(c1 = 1 AND c2 = 2 AND c3 = 3);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range PRIMARY PRIMARY 12 NULL 3 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`c1` AS `c1`,`test`.`t1`.`c2` AS `c2`,`test`.`t1`.`c3` AS `c3` from `test`.`t1` where (((`test`.`t1`.`c3` = 1) and (`test`.`t1`.`c2` = 1) and (`test`.`t1`.`c1` = 1)) or ((`test`.`t1`.`c3` = 2) and (`test`.`t1`.`c2` = 2) and (`test`.`t1`.`c1` = 1)) or ((`test`.`t1`.`c3` = 3) and (`test`.`t1`.`c2` = 2) and (`test`.`t1`.`c1` = 1)))
DROP TABLE t1;
#
# Bug#21139683: ASSERTION FAILED: TYPE_ARG == MAYBE_KEY ||
# TYPE_ARG == IMPOSSIBLE
#
CREATE TABLE t1 (
a BLOB,
PRIMARY KEY(a(1)),
KEY(a(1))
) ENGINE=INNODB;
SELECT 1 FROM t1 WHERE a <> 'a' OR a <> "";
1
DROP TABLE t1;
#
# Bug#19333852: RESULT DIFF IN QUERY HAVING DISTINCT
# WITH GROUP BY
#
CREATE TABLE t1 (
v1 VARCHAR(20) CHARACTER SET utf8 NOT NULL,
pk INTEGER NOT NULL,
PRIMARY KEY (pk),
KEY v1_key (v1(10))
) ENGINE=InnoDB;
INSERT INTO t1 VALUES ('ABCDE',19), ('JLVGO',14);
EXPLAIN SELECT * FROM t1 WHERE t1.v1 < CHAR(128);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ALL v1_key NULL NULL NULL 2 50.00 Using where
Warnings:
Warning 1366 Incorrect string value: '\x80' for column 'v1' at row 1
Note 1003 /* select#1 */ select `test`.`t1`.`v1` AS `v1`,`test`.`t1`.`pk` AS `pk` from `test`.`t1` where (`test`.`t1`.`v1` < <cache>(char(128)))
EXPLAIN SELECT * FROM t1 WHERE t1.v1 = CHAR(128);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings:
Warning 1366 Incorrect string value: '\x80' for column 'v1' at row 1
Note 1003 /* select#1 */ select `test`.`t1`.`v1` AS `v1`,`test`.`t1`.`pk` AS `pk` from `test`.`t1` where (`test`.`t1`.`v1` = char(128))
EXPLAIN SELECT * FROM t1 WHERE t1.v1 BETWEEN 'f' AND CHAR(128);
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range v1_key v1_key 32 NULL 1 100.00 Using where
Warnings:
Warning 1366 Incorrect string value: '\x80' for column 'v1' at row 1
Note 1003 /* select#1 */ select `test`.`t1`.`v1` AS `v1`,`test`.`t1`.`pk` AS `pk` from `test`.`t1` where (`test`.`t1`.`v1` between 'f' and <cache>(char(128)))
SELECT * FROM t1 WHERE t1.v1 < CHAR(128);
v1 pk
JLVGO 14
ABCDE 19
Warnings:
Warning 1366 Incorrect string value: '\x80' for column 'v1' at row 1
SELECT * FROM t1 WHERE t1.v1 = CHAR(128);
v1 pk
Warnings:
Warning 1366 Incorrect string value: '\x80' for column 'v1' at row 1
SELECT * FROM t1 WHERE t1.v1 BETWEEN 'f' AND CHAR(128);
v1 pk
JLVGO 14
Warnings:
Warning 1366 Incorrect string value: '\x80' for column 'v1' at row 1
DROP TABLE t1;
#
# Bug #21761867: ASSERTION `TYPE_ARG == MAYBE_KEY ||
# TYPE_ARG == IMPOSSIBLE' FAILED.
#
CREATE TABLE t1 (
c10 INT NOT NULL,
c12 INT NOT NULL,
c18 INT,
PRIMARY KEY (c10,c12),
UNIQUE KEY key_c12(c12),
KEY key_c18(c18));
INSERT INTO t1 VALUES(11,5,0), (12,6,1), (13,7,2), (14,8,3), (15,9,4);
CREATE TABLE t2 (
c10 INT NOT NULL,
c12 INT NOT NULL,
PRIMARY KEY(c10,c12));
CREATE TABLE t3 (c10 INT NOT NULL);
SELECT t2.c10
FROM t1
RIGHT JOIN t3
LEFT JOIN t2
ON t3.c10 = t2.c10
ON t1.c12 > t2.c12
WHERE
t1.c10 <= 25
AND
t1.c18 IS NOT NULL
OR
t1.c10 > 5
AND
t1.c18 IN (15,16,18);
c10
DROP TABLE t1, t2, t3;
#
# Bug #21318711: WRONG RESULTS FOR TRUNCATED COLUMN AND AGGREGATION
#
CREATE TABLE t1 (
col1 VARCHAR(5),
col2 INT NOT NULL,
PRIMARY KEY (col1, col2)
) ENGINE=InnoDB;
INSERT INTO t1 VALUES ('abcde', 10);
EXPLAIN SELECT MAX(col2) FROM t1 WHERE col1 = 'abcdeaa';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL ref PRIMARY PRIMARY 7 const 1 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`col2`) AS `MAX(col2)` from `test`.`t1` where (`test`.`t1`.`col1` = 'abcdeaa')
EXPLAIN SELECT MAX(col2) FROM t1 WHERE col1 = 'abcde ';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
Warnings:
Note 1003 /* select#1 */ select max(`test`.`t1`.`col2`) AS `MAX(col2)` from `test`.`t1` where multiple equal('abcde ', `test`.`t1`.`col1`)
SELECT MAX(col2) FROM t1 WHERE col1 = 'abcdeaa';
MAX(col2)
NULL
SELECT MAX(col2) FROM t1 WHERE col1 = 'abcde ';
MAX(col2)
10
DROP TABLE t1;
#
# Bug# 22283790: RANGE OPTIMIZER UTILIZES TOO MUCH MEMORY WITH
# MANY OR CONDITIONS
#
CREATE TABLE t1 (
f1 INTEGER,
KEY (f1)
);
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9),(10),(11),(12),(13),(14),(15);
SET @orig_range_optimizer_max_mem_size= @@range_optimizer_max_mem_size;
SET range_optimizer_max_mem_size= 5000;
EXPLAIN SELECT * FROM t1 WHERE f1=1 OR f1=2 OR f1=3 OR f1=4 OR f1=5
OR f1=6 OR f1=7 OR f1=8 OR f1=9 OR f1=10 OR f1=11;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 NULL range f1 f1 5 NULL 11 100.00 Using where; Using index
Warnings:
Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1` from `test`.`t1` where ((`test`.`t1`.`f1` = 1) or (`test`.`t1`.`f1` = 2) or (`test`.`t1`.`f1` = 3) or (`test`.`t1`.`f1` = 4) or (`test`.`t1`.`f1` = 5) or (`test`.`t1`.`f1` = 6) or (`test`.`t1`.`f1` = 7) or (`test`.`t1`.`f1` = 8) or (`test`.`t1`.`f1` = 9) or (`test`.`t1`.`f1` = 10) or (`test`.`t1`.`f1` = 11))
SET range_optimizer_max_mem_size= @orig_range_optimizer_max_mem_size;
DROP TABLE t1;
#
# Bug #23259872: OPTIMIZER CHOOSES TO USE NON PRIMARY
# INDEX, EVEN THOUGH COST IS HIGHER
#
CREATE TABLE `giant_table` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`one_id` int(11) NOT NULL,
`other_id` bigint(20) NOT NULL DEFAULT '0',
`some_other_id` int(11) DEFAULT 0 NOT NULL,
`something` double NOT NULL DEFAULT '0',
`comment` text COLLATE utf8_unicode_ci,
`flags` int(11) NOT NULL DEFAULT '0',
`time_created` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`),
KEY `time_created` (`time_created`),
KEY `some_other_id` (`some_other_id`),
KEY `one_other_idx` (`one_id`,`other_id`),
KEY `other_id` (`other_id`,`time_created`)
) ENGINE=InnoDB AUTO_INCREMENT=101651329
DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci ;
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (66136540), (68983250), (89627210), (77869520),
(82543190), (67538270), (77282760), (77908170),
(70923370), (68066360);
CREATE PROCEDURE p()
BEGIN
SET @x = 1;
REPEAT
INSERT INTO giant_table(id,one_id)
SELECT c1 + @x, 0
FROM t1
WHERE c1 IN (66136540, 68985250, 89627210, 77869520 , 82543190, 67538270,
77282760, 77908170, 70923370, 68066360);
SET @x = @x + 1;
UNTIL @x > 30 END REPEAT;
END $
CALL p();
SELECT count(*) FROM giant_table;
count(*)
270
INSERT INTO giant_table (id,one_id) VALUES (66136539, 0), (68983258,1),
(89628210,1), (77869520,2);
INSERT INTO giant_table (id,one_id, some_other_id) VALUES(84673401, 0, 1),
(61069031, 1, 1);
EXPLAIN SELECT id, something, comment, time_created, one_id, other_id,
some_other_id, flags
FROM giant_table
WHERE id IN (66136539, 68983258, 89628210, 77869520, 82543198, 67538272,
84673401, 61069031, 68214385, 77282865, 76991297, 64569216,
89481638, 74534074, 70396537, 80076375, 63308530, 77908270,
70923271, 68066180)
AND (giant_table.flags & 0x01) = 0 AND giant_table.some_other_id = 0;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE giant_table NULL range PRIMARY,some_other_id some_other_id 8 NULL 20 100.00 Using where; Using MRR
Warnings:
Note 1003 /* select#1 */ select `test`.`giant_table`.`id` AS `id`,`test`.`giant_table`.`something` AS `something`,`test`.`giant_table`.`comment` AS `comment`,`test`.`giant_table`.`time_created` AS `time_created`,`test`.`giant_table`.`one_id` AS `one_id`,`test`.`giant_table`.`other_id` AS `other_id`,`test`.`giant_table`.`some_other_id` AS `some_other_id`,`test`.`giant_table`.`flags` AS `flags` from `test`.`giant_table` where ((`test`.`giant_table`.`some_other_id` = 0) and (`test`.`giant_table`.`id` in (66136539,68983258,89628210,77869520,82543198,67538272,84673401,61069031,68214385,77282865,76991297,64569216,89481638,74534074,70396537,80076375,63308530,77908270,70923271,68066180)) and ((`test`.`giant_table`.`flags` & 0x01) = 0))
DROP PROCEDURE p;
DROP TABLE giant_table, t1;
#
# Bug #26727773: OPTIMIZER CHOSES COMPOSITE INDEX FOR REF OVER RANGE
#
CREATE TABLE transactions (
app_trans_id INT DEFAULT NULL,
id INT NOT NULL,
tbl INT NOT NULL DEFAULT 1,
created TIMESTAMP NOT NULL DEFAULT '2017-01-01 01:01:01',
trans_type INT NOT NULL,
description BLOB,
source_lvl1 INT DEFAULT NULL,
source_lvl2 INT DEFAULT NULL,
KEY tbl_id_idx (tbl,id),
KEY created_idx (created),
KEY trans_type_created_idx (trans_type,created),
KEY app_trans_id_idx (app_trans_id)
) ENGINE=INNODB ;
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1), (1000), (2000), (3000), (4000), (5000), (6000),
(7000), (8000), (9000);
CREATE PROCEDURE p()
BEGIN
SET @x = 1;
REPEAT
INSERT IGNORE INTO transactions(id,trans_type, description)
SELECT c1 + @x, @x , 'abcd'
FROM t1;
SET @x = @x + 1;
UNTIL @x > 300 END REPEAT;
END $
CALL p();
SELECT count(*) FROM transactions;
count(*)
3000
INSERT IGNORE INTO transactions(id,trans_type, description, created)
SELECT 3, 3 , 'abcd', '2018-01-01 01:01:01'
FROM dual;
EXPLAIN SELECT '2017-10-23 01:01:01', HOUR(created), source_lvl1, source_lvl2,
COUNT(DISTINCT(app_trans_id))
FROM transactions
WHERE created > '2017-10-23 01:01:01' AND tbl = 1 AND trans_type in (3)
GROUP BY '2017-10-23 01:01:01', HOUR(created), source_lvl1, source_lvl2;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE transactions NULL range tbl_id_idx,created_idx,trans_type_created_idx trans_type_created_idx 8 NULL 1 100.00 Using where; Using MRR; Using filesort
Warnings:
Note 1003 /* select#1 */ select '2017-10-23 01:01:01' AS `2017-10-23 01:01:01`,hour(`test`.`transactions`.`created`) AS `HOUR(created)`,`test`.`transactions`.`source_lvl1` AS `source_lvl1`,`test`.`transactions`.`source_lvl2` AS `source_lvl2`,count(distinct `test`.`transactions`.`app_trans_id`) AS `COUNT(DISTINCT(app_trans_id))` from `test`.`transactions` where ((`test`.`transactions`.`trans_type` = 3) and (`test`.`transactions`.`tbl` = 1) and (`test`.`transactions`.`created` > '2017-10-23 01:01:01')) group by '2017-10-23 01:01:01',hour(`test`.`transactions`.`created`),`test`.`transactions`.`source_lvl1`,`test`.`transactions`.`source_lvl2`
SET optimizer_trace="enabled=on";
SELECT '2017-10-23 01:01:01', HOUR(created), source_lvl1, source_lvl2,
COUNT(DISTINCT(app_trans_id))
FROM transactions
WHERE created > '2017-10-23 01:01:01' AND tbl = 1 AND trans_type in (3)
GROUP BY '2017-10-23 01:01:01', HOUR(created), source_lvl1, source_lvl2;
2017-10-23 01:01:01 HOUR(created) source_lvl1 source_lvl2 COUNT(DISTINCT(app_trans_id))
2017-10-23 01:01:01 1 NULL NULL 0
SELECT TRACE INTO @trace FROM INFORMATION_SCHEMA.OPTIMIZER_TRACE;
SELECT @trace RLIKE "uses_more_keyparts";
@trace RLIKE "uses_more_keyparts"
1
SET optimizer_trace="enabled=off";
DROP PROCEDURE p;
DROP TABLE t1, transactions;
#
# Bug #28086754: OPTIMIZER SKIP THE RANG SCAN ON SECOND COLUMN IN A
# COMPOSITE INDEX
#
CREATE TABLE test_ref (
a INT PRIMARY KEY,
b VARCHAR(20),
c VARCHAR(20) DEFAULT NULL,
d VARCHAR(3) DEFAULT NULL,
id INT DEFAULT NULL,
KEY idx1 (id, c),
KEY idx2 (id, d)) ENGINE=INNODB ;
ANALYZE TABLE test_ref;
Table Op Msg_type Msg_text
test.test_ref analyze status OK
EXPLAIN SELECT *
FROM test_ref
WHERE id=3 AND c LIKE 'gh%'
ORDER BY c
LIMIT 1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE test_ref NULL range idx1,idx2 idx1 28 NULL 27 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`test_ref`.`a` AS `a`,`test`.`test_ref`.`b` AS `b`,`test`.`test_ref`.`c` AS `c`,`test`.`test_ref`.`d` AS `d`,`test`.`test_ref`.`id` AS `id` from `test`.`test_ref` where ((`test`.`test_ref`.`id` = 3) and (`test`.`test_ref`.`c` like 'gh%')) order by `test`.`test_ref`.`c` limit 1
SELECT *
FROM test_ref
WHERE id=3 AND c LIKE 'gh%'
ORDER BY c
LIMIT 1;
a b c d id
34876 D003 gheennse S 3
EXPLAIN SELECT *
FROM test_ref
WHERE id=3 AND c LIKE 'gh%'
ORDER BY c DESC
LIMIT 1;
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE test_ref NULL range idx1,idx2 idx1 28 NULL 27 100.00 Using where
Warnings:
Note 1003 /* select#1 */ select `test`.`test_ref`.`a` AS `a`,`test`.`test_ref`.`b` AS `b`,`test`.`test_ref`.`c` AS `c`,`test`.`test_ref`.`d` AS `d`,`test`.`test_ref`.`id` AS `id` from `test`.`test_ref` where ((`test`.`test_ref`.`id` = 3) and (`test`.`test_ref`.`c` like 'gh%')) order by `test`.`test_ref`.`c` desc limit 1
SELECT *
FROM test_ref
WHERE id=3 AND c LIKE 'gh%'
ORDER BY c DESC
LIMIT 1;
a b c d id
1770649 D003 gheennse S 3
DROP TABLE test_ref;
set optimizer_switch=default;