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1
by brian
clean slate |
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drop table if exists t1, t2, t3;
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CREATE TABLE t1 (
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event_date date DEFAULT '0000-00-00' NOT NULL,
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type int(11) DEFAULT '0' NOT NULL,
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event_id int(11) DEFAULT '0' NOT NULL,
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PRIMARY KEY (event_date,type,event_id)
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);
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INSERT INTO t1 VALUES ('1999-07-10',100100,24), ('1999-07-11',100100,25),
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('1999-07-13',100600,0), ('1999-07-13',100600,4), ('1999-07-13',100600,26),
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('1999-07-14',100600,10), ('1999-07-15',100600,16), ('1999-07-15',100800,45),
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('1999-07-15',101000,47), ('1999-07-16',100800,46), ('1999-07-20',100600,5),
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('1999-07-20',100600,27), ('1999-07-21',100600,11), ('1999-07-22',100600,17),
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('1999-07-23',100100,39), ('1999-07-24',100100,39), ('1999-07-24',100500,40),
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('1999-07-25',100100,39), ('1999-07-27',100600,1), ('1999-07-27',100600,6),
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('1999-07-27',100600,28), ('1999-07-28',100600,12), ('1999-07-29',100500,41),
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('1999-07-29',100600,18), ('1999-07-30',100500,41), ('1999-07-31',100500,41),
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('1999-08-01',100700,34), ('1999-08-03',100600,7), ('1999-08-03',100600,29),
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('1999-08-04',100600,13), ('1999-08-05',100500,42), ('1999-08-05',100600,19),
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('1999-08-06',100500,42), ('1999-08-07',100500,42), ('1999-08-08',100500,42),
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('1999-08-10',100600,2), ('1999-08-10',100600,9), ('1999-08-10',100600,30),
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('1999-08-11',100600,14), ('1999-08-12',100600,20), ('1999-08-17',100500,8),
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('1999-08-17',100600,31), ('1999-08-18',100600,15), ('1999-08-19',100600,22),
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('1999-08-24',100600,3), ('1999-08-24',100600,32), ('1999-08-27',100500,43),
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('1999-08-31',100600,33), ('1999-09-17',100100,37), ('1999-09-18',100100,37),
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('1999-09-19',100100,37), ('2000-12-18',100700,38);
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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;
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event_date type event_id
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1999-07-10 100100 24
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1999-07-11 100100 25
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1999-07-13 100600 0
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1999-07-13 100600 4
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1999-07-13 100600 26
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1999-07-14 100600 10
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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;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE
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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;
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event_date type event_id
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1999-07-10 100100 24
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1999-07-11 100100 25
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1999-07-13 100600 0
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1999-07-13 100600 4
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1999-07-13 100600 26
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1999-07-14 100600 10
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1999-07-15 100600 16
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drop table t1;
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CREATE TABLE t1 (
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PAPER_ID smallint(6) DEFAULT '0' NOT NULL,
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YEAR smallint(6) DEFAULT '0' NOT NULL,
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ISSUE smallint(6) DEFAULT '0' NOT NULL,
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CLOSED tinyint(4) DEFAULT '0' NOT NULL,
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ISS_DATE date DEFAULT '0000-00-00' NOT NULL,
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PRIMARY KEY (PAPER_ID,YEAR,ISSUE)
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);
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INSERT INTO t1 VALUES (3,1999,34,0,'1999-07-12'), (1,1999,111,0,'1999-03-23'),
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(1,1999,222,0,'1999-03-23'), (3,1999,33,0,'1999-07-12'),
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(3,1999,32,0,'1999-07-12'), (3,1999,31,0,'1999-07-12'),
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(3,1999,30,0,'1999-07-12'), (3,1999,29,0,'1999-07-12'),
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(3,1999,28,0,'1999-07-12'), (1,1999,40,1,'1999-05-01'),
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(1,1999,41,1,'1999-05-01'), (1,1999,42,1,'1999-05-01'),
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(1,1999,46,1,'1999-05-01'), (1,1999,47,1,'1999-05-01'),
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(1,1999,48,1,'1999-05-01'), (1,1999,49,1,'1999-05-01'),
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(1,1999,50,0,'1999-05-01'), (1,1999,51,0,'1999-05-01'),
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(1,1999,200,0,'1999-06-28'), (1,1999,52,0,'1999-06-28'),
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(1,1999,53,0,'1999-06-28'), (1,1999,54,0,'1999-06-28'),
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(1,1999,55,0,'1999-06-28'), (1,1999,56,0,'1999-07-01'),
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(1,1999,57,0,'1999-07-01'), (1,1999,58,0,'1999-07-01'),
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(1,1999,59,0,'1999-07-01'), (1,1999,60,0,'1999-07-01'),
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(3,1999,35,0,'1999-07-12');
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select YEAR,ISSUE from t1 where PAPER_ID=3 and (YEAR>1999 or (YEAR=1999 and ISSUE>28)) order by YEAR,ISSUE;
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YEAR ISSUE
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1999 29
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1999 30
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1999 31
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1999 32
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1999 33
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1999 34
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1999 35
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check table t1;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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repair table t1;
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Table Op Msg_type Msg_text
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test.t1 repair status OK
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drop table t1;
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CREATE TABLE t1 (
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id int(11) NOT NULL auto_increment,
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parent_id int(11) DEFAULT '0' NOT NULL,
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level tinyint(4) DEFAULT '0' NOT NULL,
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PRIMARY KEY (id),
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KEY parent_id (parent_id),
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KEY level (level)
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);
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INSERT INTO t1 VALUES (1,0,0), (3,1,1), (4,1,1), (8,2,2), (9,2,2), (17,3,2),
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(22,4,2), (24,4,2), (28,5,2), (29,5,2), (30,5,2), (31,6,2), (32,6,2), (33,6,2),
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(203,7,2), (202,7,2), (20,3,2), (157,0,0), (193,5,2), (40,7,2), (2,1,1),
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(15,2,2), (6,1,1), (34,6,2), (35,6,2), (16,3,2), (7,1,1), (36,7,2), (18,3,2),
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(26,5,2), (27,5,2), (183,4,2), (38,7,2), (25,5,2), (37,7,2), (21,4,2),
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(19,3,2), (5,1,1), (179,5,2);
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SELECT * FROM t1 WHERE level = 1 AND parent_id = 1;
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id parent_id level
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3 1 1
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4 1 1
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2 1 1
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6 1 1
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7 1 1
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5 1 1
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SELECT * FROM t1 WHERE level = 1 AND parent_id = 1 order by id;
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id parent_id level
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2 1 1
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3 1 1
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4 1 1
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5 1 1
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6 1 1
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7 1 1
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drop table t1;
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create table t1(
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Satellite varchar(25) not null,
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SensorMode varchar(25) not null,
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FullImageCornersUpperLeftLongitude double not null,
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FullImageCornersUpperRightLongitude double not null,
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FullImageCornersUpperRightLatitude double not null,
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FullImageCornersLowerRightLatitude double not null,
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index two (Satellite, SensorMode, FullImageCornersUpperLeftLongitude, FullImageCornersUpperRightLongitude, FullImageCornersUpperRightLatitude, FullImageCornersLowerRightLatitude));
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insert into t1 values("OV-3","PAN1",91,-92,40,50);
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insert into t1 values("OV-4","PAN1",91,-92,40,50);
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select * from t1 where t1.Satellite = "OV-3" and t1.SensorMode = "PAN1" and t1.FullImageCornersUpperLeftLongitude > -90.000000 and t1.FullImageCornersUpperRightLongitude < -82.000000;
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Satellite SensorMode FullImageCornersUpperLeftLongitude FullImageCornersUpperRightLongitude FullImageCornersUpperRightLatitude FullImageCornersLowerRightLatitude
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OV-3 PAN1 91 -92 40 50
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drop table t1;
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create table t1 ( aString char(100) not null default "", key aString (aString(10)) );
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insert t1 (aString) values ( "believe in myself" ), ( "believe" ), ("baaa" ), ( "believe in love");
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select * from t1 where aString < "believe in myself" order by aString;
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aString
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baaa
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believe
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believe in love
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select * from t1 where aString > "believe in love" order by aString;
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aString
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believe in myself
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alter table t1 drop key aString;
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select * from t1 where aString < "believe in myself" order by aString;
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aString
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baaa
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believe
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believe in love
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select * from t1 where aString > "believe in love" order by aString;
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aString
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believe in myself
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drop table t1;
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CREATE TABLE t1 (
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t1ID int(10) unsigned NOT NULL auto_increment,
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art binary(1) NOT NULL default '',
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KNR char(5) NOT NULL default '',
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RECHNR char(6) NOT NULL default '',
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POSNR char(2) NOT NULL default '',
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ARTNR char(10) NOT NULL default '',
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TEX char(70) NOT NULL default '',
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PRIMARY KEY (t1ID),
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KEY IdxArt (art),
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KEY IdxKnr (KNR),
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KEY IdxArtnr (ARTNR)
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) ENGINE=MyISAM;
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INSERT INTO t1 (art) VALUES ('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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167 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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168 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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169 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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171 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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172 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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173 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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174 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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175 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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176 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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177 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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178 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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179 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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180 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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181 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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182 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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183 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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184 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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185 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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186 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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187 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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188 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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189 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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190 |
('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),('j'),('J'),
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191 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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192 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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193 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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194 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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195 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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196 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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197 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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198 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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199 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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200 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),
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201 |
('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j'),('j');
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202 |
select count(*) from t1 where upper(art) = 'J';
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203 |
count(*)
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204 |
213
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205 |
select count(*) from t1 where art = 'J' or art = 'j';
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206 |
count(*)
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207 |
602
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208 |
select count(*) from t1 where art = 'j' or art = 'J';
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209 |
count(*)
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210 |
602
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211 |
select count(*) from t1 where art = 'j';
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212 |
count(*)
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213 |
389
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214 |
select count(*) from t1 where art = 'J';
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215 |
count(*)
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216 |
213
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217 |
drop table t1;
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218 |
create table t1 (x int, y int, index(x), index(y));
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219 |
insert into t1 (x) values (1),(2),(3),(4),(5),(6),(7),(8),(9);
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220 |
update t1 set y=x;
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221 |
explain select * from t1, t1 t2 where t1.y = 8 and t2.x between 7 and t1.y+0;
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222 |
id select_type table type possible_keys key key_len ref rows Extra
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223 |
1 SIMPLE t1 ref y y 5 const 1
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224 |
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer
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225 |
explain select * from t1, t1 t2 where t1.y = 8 and t2.x >= 7 and t2.x <= t1.y+0;
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226 |
id select_type table type possible_keys key key_len ref rows Extra
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227 |
1 SIMPLE t1 ref y y 5 const 1
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228 |
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer
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229 |
explain select * from t1, t1 t2 where t1.y = 2 and t2.x between t1.y-1 and t1.y+1;
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230 |
id select_type table type possible_keys key key_len ref rows Extra
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231 |
1 SIMPLE t1 ref y y 5 const 1
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232 |
1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Using MRR; Using join buffer
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233 |
explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= t1.y-1 and t2.x <= t1.y+1;
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234 |
id select_type table type possible_keys key key_len ref rows Extra
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235 |
1 SIMPLE t1 ref y y 5 const 1
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236 |
1 SIMPLE t2 range x x 5 NULL 3 Using index condition; Using MRR; Using join buffer
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237 |
explain select * from t1, t1 t2 where t1.y = 2 and t2.x between 0 and t1.y;
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238 |
id select_type table type possible_keys key key_len ref rows Extra
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239 |
1 SIMPLE t1 ref y y 5 const 1
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240 |
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer
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241 |
explain select * from t1, t1 t2 where t1.y = 2 and t2.x >= 0 and t2.x <= t1.y;
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242 |
id select_type table type possible_keys key key_len ref rows Extra
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243 |
1 SIMPLE t1 ref y y 5 const 1
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244 |
1 SIMPLE t2 range x x 5 NULL 2 Using index condition; Using MRR; Using join buffer
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245 |
explain select count(*) from t1 where x in (1);
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246 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
247 |
1 SIMPLE t1 ref x x 5 const 1 Using index
|
|
248 |
explain select count(*) from t1 where x in (1,2);
|
|
249 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
250 |
1 SIMPLE t1 index x x 5 NULL 9 Using where; Using index
|
|
251 |
drop table t1;
|
|
252 |
CREATE TABLE t1 (key1 int(11) NOT NULL default '0', KEY i1 (key1));
|
|
253 |
INSERT INTO t1 VALUES (0),(0),(0),(0),(0),(1),(1);
|
|
254 |
CREATE TABLE t2 (keya int(11) NOT NULL default '0', KEY j1 (keya));
|
|
255 |
INSERT INTO t2 VALUES (0),(0),(1),(1),(2),(2);
|
|
256 |
explain select * from t1, t2 where (t1.key1 <t2.keya + 1) and t2.keya=3;
|
|
257 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
258 |
1 SIMPLE t2 ref j1 j1 4 const 1 Using index
|
|
259 |
1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using index; Using join buffer
|
|
260 |
explain select * from t1 force index(i1), t2 force index(j1) where
|
|
261 |
(t1.key1 <t2.keya + 1) and t2.keya=3;
|
|
262 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
263 |
1 SIMPLE t2 ref j1 j1 4 const 1 Using index
|
|
264 |
1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using index; Using join buffer
|
|
265 |
DROP TABLE t1,t2;
|
|
266 |
CREATE TABLE t1 (
|
|
267 |
a int(11) default NULL,
|
|
268 |
b int(11) default NULL,
|
|
269 |
KEY a (a),
|
|
270 |
KEY b (b)
|
|
271 |
) ENGINE=MyISAM;
|
|
272 |
INSERT INTO t1 VALUES
|
|
273 |
(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,2),(10,2),
|
|
274 |
(13,2),(14,2),(15,2),(16,2),(17,3),(17,3),(16,3),(17,3),(19,3),(20,3),
|
|
275 |
(21,4),(22,5),(23,5),(24,5),(25,5),(26,5),(30,5),(31,5),(32,5),(33,5),
|
|
276 |
(33,5),(33,5),(33,5),(33,5),(34,5),(35,5);
|
|
277 |
EXPLAIN SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
|
|
278 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
279 |
1 SIMPLE t1 range a,b a 5 NULL 2 Using index condition; Using where; Using MRR
|
|
280 |
SELECT * FROM t1 WHERE a IN(1,2) AND b=5;
|
|
281 |
a b
|
|
282 |
DROP TABLE t1;
|
|
283 |
CREATE TABLE t1 (a int, b int, c int, INDEX (c,a,b));
|
|
284 |
INSERT INTO t1 VALUES (1,0,0),(1,0,0),(1,0,0);
|
|
285 |
INSERT INTO t1 VALUES (0,1,0),(0,1,0),(0,1,0);
|
|
286 |
SELECT COUNT(*) FROM t1 WHERE (c=0 and a=1) or (c=0 and b=1);
|
|
287 |
COUNT(*)
|
|
288 |
6
|
|
289 |
SELECT COUNT(*) FROM t1 WHERE (c=0 and b=1) or (c=0 and a=1);
|
|
290 |
COUNT(*)
|
|
291 |
6
|
|
292 |
DROP TABLE t1;
|
|
293 |
CREATE TABLE t1 ( a int not null, b int not null, INDEX ab(a,b) );
|
|
294 |
INSERT INTO t1 VALUES (47,1), (70,1), (15,1), (15, 4);
|
|
295 |
SELECT * FROM t1
|
|
296 |
WHERE
|
|
297 |
(
|
|
298 |
( b =1 AND a BETWEEN 14 AND 21 ) OR
|
|
299 |
( b =2 AND a BETWEEN 16 AND 18 ) OR
|
|
300 |
( b =3 AND a BETWEEN 15 AND 19 ) OR
|
|
301 |
(a BETWEEN 19 AND 47)
|
|
302 |
);
|
|
303 |
a b
|
|
304 |
15 1
|
|
305 |
47 1
|
|
306 |
DROP TABLE t1;
|
|
307 |
CREATE TABLE t1 (
|
|
308 |
id int( 11 ) unsigned NOT NULL AUTO_INCREMENT ,
|
|
309 |
line int( 5 ) unsigned NOT NULL default '0',
|
|
310 |
columnid int( 3 ) unsigned NOT NULL default '0',
|
|
311 |
owner int( 3 ) unsigned NOT NULL default '0',
|
|
312 |
ordinal int( 3 ) unsigned NOT NULL default '0',
|
|
313 |
showid smallint( 6 ) unsigned NOT NULL default '1',
|
|
314 |
tableid int( 1 ) unsigned NOT NULL default '1',
|
|
315 |
content int( 5 ) unsigned NOT NULL default '188',
|
|
316 |
PRIMARY KEY ( owner, id ) ,
|
|
317 |
KEY menu( owner, showid, columnid ) ,
|
|
318 |
KEY `COLUMN` ( owner, columnid, line ) ,
|
|
319 |
KEY `LINES` ( owner, tableid, content, id ) ,
|
|
320 |
KEY recount( owner, line )
|
|
321 |
) ENGINE = MYISAM;
|
|
322 |
INSERT into t1 (owner,id,columnid,line) values (11,15,15,1),(11,13,13,5);
|
|
323 |
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;
|
|
324 |
id columnid tableid content showid line ordinal
|
|
325 |
13 13 1 188 1 5 0
|
|
326 |
15 15 1 188 1 1 0
|
|
327 |
drop table t1;
|
|
328 |
create table t1 (id int(10) primary key);
|
|
329 |
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
330 |
select id from t1 where id in (2,5,9) ;
|
|
331 |
id
|
|
332 |
2
|
|
333 |
5
|
|
334 |
9
|
|
335 |
select id from t1 where id=2 or id=5 or id=9 ;
|
|
336 |
id
|
|
337 |
2
|
|
338 |
5
|
|
339 |
9
|
|
340 |
drop table t1;
|
|
341 |
create table t1 ( id1 int not null, id2 int not null, idnull int null, c char(20), primary key (id1,id2));
|
|
342 |
insert into t1 values (0,1,NULL,"aaa"), (1,1,NULL,"aaa"), (2,1,NULL,"aaa"),
|
|
343 |
(3,1,NULL,"aaa"), (4,1,NULL,"aaa"), (5,1,NULL,"aaa"),
|
|
344 |
(6,1,NULL,"aaa"), (7,1,NULL,"aaa"), (8,1,NULL,"aaa"),
|
|
345 |
(9,1,NULL,"aaa"), (10,1,NULL,"aaa"), (11,1,NULL,"aaa"),
|
|
346 |
(12,1,NULL,"aaa"), (13,1,NULL,"aaa"), (14,1,NULL,"aaa"),
|
|
347 |
(15,1,NULL,"aaa"), (16,1,NULL,"aaa"), (17,1,NULL,"aaa"),
|
|
348 |
(18,1,NULL,"aaa"), (19,1,NULL,"aaa"), (20,1,NULL,"aaa");
|
|
349 |
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;
|
|
350 |
id1 idnull
|
|
351 |
drop table t1;
|
|
352 |
create table t1 (
|
|
353 |
id int not null auto_increment,
|
|
354 |
name char(1) not null,
|
|
355 |
uid int not null,
|
|
356 |
primary key (id),
|
|
357 |
index uid_index (uid));
|
|
358 |
create table t2 (
|
|
359 |
id int not null auto_increment,
|
|
360 |
name char(1) not null,
|
|
361 |
uid int not null,
|
|
362 |
primary key (id),
|
|
363 |
index uid_index (uid));
|
|
364 |
insert into t1(id, uid, name) values(1, 0, ' ');
|
|
365 |
insert into t1(uid, name) values(0, ' ');
|
|
366 |
insert into t2(uid, name) select uid, name from t1;
|
|
367 |
insert into t1(uid, name) select uid, name from t2;
|
|
368 |
insert into t2(uid, name) select uid, name from t1;
|
|
369 |
insert into t1(uid, name) select uid, name from t2;
|
|
370 |
insert into t2(uid, name) select uid, name from t1;
|
|
371 |
insert into t1(uid, name) select uid, name from t2;
|
|
372 |
insert into t2(uid, name) select uid, name from t1;
|
|
373 |
insert into t1(uid, name) select uid, name from t2;
|
|
374 |
insert into t2(uid, name) select uid, name from t1;
|
|
375 |
insert into t1(uid, name) select uid, name from t2;
|
|
376 |
insert into t2(uid, name) select uid, name from t1;
|
|
377 |
insert into t2(uid, name) select uid, name from t1;
|
|
378 |
insert into t2(uid, name) select uid, name from t1;
|
|
379 |
insert into t2(uid, name) select uid, name from t1;
|
|
380 |
insert into t1(uid, name) select uid, name from t2;
|
|
381 |
delete from t2;
|
|
382 |
insert into t2(uid, name) values
|
|
383 |
(1, CHAR(64+1)),
|
|
384 |
(2, CHAR(64+2)),
|
|
385 |
(3, CHAR(64+3)),
|
|
386 |
(4, CHAR(64+4)),
|
|
387 |
(5, CHAR(64+5)),
|
|
388 |
(6, CHAR(64+6)),
|
|
389 |
(7, CHAR(64+7)),
|
|
390 |
(8, CHAR(64+8)),
|
|
391 |
(9, CHAR(64+9)),
|
|
392 |
(10, CHAR(64+10)),
|
|
393 |
(11, CHAR(64+11)),
|
|
394 |
(12, CHAR(64+12)),
|
|
395 |
(13, CHAR(64+13)),
|
|
396 |
(14, CHAR(64+14)),
|
|
397 |
(15, CHAR(64+15)),
|
|
398 |
(16, CHAR(64+16)),
|
|
399 |
(17, CHAR(64+17)),
|
|
400 |
(18, CHAR(64+18)),
|
|
401 |
(19, CHAR(64+19)),
|
|
402 |
(20, CHAR(64+20)),
|
|
403 |
(21, CHAR(64+21)),
|
|
404 |
(22, CHAR(64+22)),
|
|
405 |
(23, CHAR(64+23)),
|
|
406 |
(24, CHAR(64+24)),
|
|
407 |
(25, CHAR(64+25)),
|
|
408 |
(26, CHAR(64+26));
|
|
409 |
insert into t1(uid, name) select uid, name from t2 order by uid;
|
|
410 |
delete from t2;
|
|
411 |
insert into t2(id, uid, name) select id, uid, name from t1;
|
|
412 |
select count(*) from t1;
|
|
413 |
count(*)
|
|
414 |
1026
|
|
415 |
select count(*) from t2;
|
|
416 |
count(*)
|
|
417 |
1026
|
|
418 |
analyze table t1,t2;
|
|
419 |
Table Op Msg_type Msg_text
|
|
420 |
test.t1 analyze status OK
|
|
421 |
test.t2 analyze status Table is already up to date
|
|
422 |
explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0;
|
|
423 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
424 |
1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Using MRR
|
|
425 |
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
|
|
426 |
explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid > 0;
|
|
427 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
428 |
1 SIMPLE t1 range uid_index uid_index 4 NULL 112 Using index condition; Using MRR
|
|
429 |
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
|
|
430 |
explain select * from t1, t2 where t1.uid=t2.uid AND t1.uid != 0;
|
|
431 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
432 |
1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Using MRR
|
|
433 |
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
|
|
434 |
explain select * from t1, t2 where t1.uid=t2.uid AND t2.uid != 0;
|
|
435 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
436 |
1 SIMPLE t1 range uid_index uid_index 4 NULL 113 Using index condition; Using MRR
|
|
437 |
1 SIMPLE t2 ref uid_index uid_index 4 test.t1.uid 38
|
|
438 |
select * from t1, t2 where t1.uid=t2.uid AND t1.uid > 0;
|
|
439 |
id name uid id name uid
|
|
440 |
1001 A 1 1001 A 1
|
|
441 |
1002 B 2 1002 B 2
|
|
442 |
1003 C 3 1003 C 3
|
|
443 |
1004 D 4 1004 D 4
|
|
444 |
1005 E 5 1005 E 5
|
|
445 |
1006 F 6 1006 F 6
|
|
446 |
1007 G 7 1007 G 7
|
|
447 |
1008 H 8 1008 H 8
|
|
448 |
1009 I 9 1009 I 9
|
|
449 |
1010 J 10 1010 J 10
|
|
450 |
1011 K 11 1011 K 11
|
|
451 |
1012 L 12 1012 L 12
|
|
452 |
1013 M 13 1013 M 13
|
|
453 |
1014 N 14 1014 N 14
|
|
454 |
1015 O 15 1015 O 15
|
|
455 |
1016 P 16 1016 P 16
|
|
456 |
1017 Q 17 1017 Q 17
|
|
457 |
1018 R 18 1018 R 18
|
|
458 |
1019 S 19 1019 S 19
|
|
459 |
1020 T 20 1020 T 20
|
|
460 |
1021 U 21 1021 U 21
|
|
461 |
1022 V 22 1022 V 22
|
|
462 |
1023 W 23 1023 W 23
|
|
463 |
1024 X 24 1024 X 24
|
|
464 |
1025 Y 25 1025 Y 25
|
|
465 |
1026 Z 26 1026 Z 26
|
|
466 |
select * from t1, t2 where t1.uid=t2.uid AND t1.uid != 0;
|
|
467 |
id name uid id name uid
|
|
468 |
1001 A 1 1001 A 1
|
|
469 |
1002 B 2 1002 B 2
|
|
470 |
1003 C 3 1003 C 3
|
|
471 |
1004 D 4 1004 D 4
|
|
472 |
1005 E 5 1005 E 5
|
|
473 |
1006 F 6 1006 F 6
|
|
474 |
1007 G 7 1007 G 7
|
|
475 |
1008 H 8 1008 H 8
|
|
476 |
1009 I 9 1009 I 9
|
|
477 |
1010 J 10 1010 J 10
|
|
478 |
1011 K 11 1011 K 11
|
|
479 |
1012 L 12 1012 L 12
|
|
480 |
1013 M 13 1013 M 13
|
|
481 |
1014 N 14 1014 N 14
|
|
482 |
1015 O 15 1015 O 15
|
|
483 |
1016 P 16 1016 P 16
|
|
484 |
1017 Q 17 1017 Q 17
|
|
485 |
1018 R 18 1018 R 18
|
|
486 |
1019 S 19 1019 S 19
|
|
487 |
1020 T 20 1020 T 20
|
|
488 |
1021 U 21 1021 U 21
|
|
489 |
1022 V 22 1022 V 22
|
|
490 |
1023 W 23 1023 W 23
|
|
491 |
1024 X 24 1024 X 24
|
|
492 |
1025 Y 25 1025 Y 25
|
|
493 |
1026 Z 26 1026 Z 26
|
|
494 |
drop table t1,t2;
|
|
495 |
create table t1 (x bigint unsigned not null);
|
|
496 |
insert into t1(x) values (0xfffffffffffffff0);
|
|
497 |
insert into t1(x) values (0xfffffffffffffff1);
|
|
498 |
select * from t1;
|
|
499 |
x
|
|
500 |
18446744073709551600
|
|
501 |
18446744073709551601
|
|
502 |
select count(*) from t1 where x>0;
|
|
503 |
count(*)
|
|
504 |
2
|
|
505 |
select count(*) from t1 where x=0;
|
|
506 |
count(*)
|
|
507 |
0
|
|
508 |
select count(*) from t1 where x<0;
|
|
509 |
count(*)
|
|
510 |
0
|
|
511 |
select count(*) from t1 where x < -16;
|
|
512 |
count(*)
|
|
513 |
0
|
|
514 |
select count(*) from t1 where x = -16;
|
|
515 |
count(*)
|
|
516 |
0
|
|
517 |
select count(*) from t1 where x > -16;
|
|
518 |
count(*)
|
|
519 |
2
|
|
520 |
select count(*) from t1 where x = 18446744073709551601;
|
|
521 |
count(*)
|
|
522 |
1
|
|
523 |
create table t2 (x bigint not null);
|
|
524 |
insert into t2(x) values (-16);
|
|
525 |
insert into t2(x) values (-15);
|
|
526 |
select * from t2;
|
|
527 |
x
|
|
528 |
-16
|
|
529 |
-15
|
|
530 |
select count(*) from t2 where x>0;
|
|
531 |
count(*)
|
|
532 |
0
|
|
533 |
select count(*) from t2 where x=0;
|
|
534 |
count(*)
|
|
535 |
0
|
|
536 |
select count(*) from t2 where x<0;
|
|
537 |
count(*)
|
|
538 |
2
|
|
539 |
select count(*) from t2 where x < -16;
|
|
540 |
count(*)
|
|
541 |
0
|
|
542 |
select count(*) from t2 where x = -16;
|
|
543 |
count(*)
|
|
544 |
1
|
|
545 |
select count(*) from t2 where x > -16;
|
|
546 |
count(*)
|
|
547 |
1
|
|
548 |
select count(*) from t2 where x = 18446744073709551601;
|
|
549 |
count(*)
|
|
550 |
0
|
|
551 |
drop table t1,t2;
|
|
552 |
create table t1 (x bigint unsigned not null primary key) engine=innodb;
|
|
553 |
insert into t1(x) values (0xfffffffffffffff0);
|
|
554 |
insert into t1(x) values (0xfffffffffffffff1);
|
|
555 |
select * from t1;
|
|
556 |
x
|
|
557 |
18446744073709551600
|
|
558 |
18446744073709551601
|
|
559 |
select count(*) from t1 where x>0;
|
|
560 |
count(*)
|
|
561 |
2
|
|
562 |
select count(*) from t1 where x=0;
|
|
563 |
count(*)
|
|
564 |
0
|
|
565 |
select count(*) from t1 where x<0;
|
|
566 |
count(*)
|
|
567 |
0
|
|
568 |
select count(*) from t1 where x < -16;
|
|
569 |
count(*)
|
|
570 |
0
|
|
571 |
select count(*) from t1 where x = -16;
|
|
572 |
count(*)
|
|
573 |
0
|
|
574 |
select count(*) from t1 where x > -16;
|
|
575 |
count(*)
|
|
576 |
2
|
|
577 |
select count(*) from t1 where x = 18446744073709551601;
|
|
578 |
count(*)
|
|
579 |
1
|
|
580 |
drop table t1;
|
|
581 |
create table t1 (a bigint unsigned);
|
|
582 |
create index t1i on t1(a);
|
|
583 |
insert into t1 select 18446744073709551615;
|
|
584 |
insert into t1 select 18446744073709551614;
|
|
585 |
explain select * from t1 where a <> -1;
|
|
586 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
587 |
1 SIMPLE t1 index t1i t1i 9 NULL 2 Using where; Using index
|
|
588 |
select * from t1 where a <> -1;
|
|
589 |
a
|
|
590 |
18446744073709551614
|
|
591 |
18446744073709551615
|
|
592 |
explain select * from t1 where a > -1 or a < -1;
|
|
593 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
594 |
1 SIMPLE t1 index t1i t1i 9 NULL 2 Using where; Using index
|
|
595 |
select * from t1 where a > -1 or a < -1;
|
|
596 |
a
|
|
597 |
18446744073709551614
|
|
598 |
18446744073709551615
|
|
599 |
explain select * from t1 where a > -1;
|
|
600 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
601 |
1 SIMPLE t1 index t1i t1i 9 NULL 2 Using where; Using index
|
|
602 |
select * from t1 where a > -1;
|
|
603 |
a
|
|
604 |
18446744073709551614
|
|
605 |
18446744073709551615
|
|
606 |
explain select * from t1 where a < -1;
|
|
607 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
608 |
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
|
609 |
select * from t1 where a < -1;
|
|
610 |
a
|
|
611 |
drop table t1;
|
|
612 |
set names latin1;
|
|
613 |
create table t1 (a char(10), b text, key (a)) character set latin1;
|
|
614 |
INSERT INTO t1 (a) VALUES
|
|
615 |
('111'),('222'),('222'),('222'),('222'),('444'),('aaa'),('AAA'),('bbb');
|
|
616 |
explain select * from t1 where a='aaa';
|
|
617 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
618 |
1 SIMPLE t1 ref a a 11 const 2 Using index condition
|
|
619 |
explain select * from t1 where a=binary 'aaa';
|
|
620 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
621 |
1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Using MRR
|
|
622 |
explain select * from t1 where a='aaa' collate latin1_bin;
|
|
623 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
624 |
1 SIMPLE t1 range a a 11 NULL 2 Using index condition; Using MRR
|
|
625 |
explain select * from t1 where a='aaa' collate latin1_german1_ci;
|
|
626 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
627 |
1 SIMPLE t1 ALL a NULL NULL NULL 9 Using where
|
|
628 |
drop table t1;
|
|
629 |
CREATE TABLE t1 (
|
|
630 |
`CLIENT` char(3) character set latin1 collate latin1_bin NOT NULL default '000',
|
|
631 |
`ARG1` char(3) character set latin1 collate latin1_bin NOT NULL default '',
|
|
632 |
`ARG2` char(3) character set latin1 collate latin1_bin NOT NULL default '',
|
|
633 |
`FUNCTION` varchar(10) character set latin1 collate latin1_bin NOT NULL default '',
|
|
634 |
`FUNCTINT` int(11) NOT NULL default '0',
|
|
635 |
KEY `VERI_CLNT~2` (`ARG1`)
|
|
636 |
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
|
637 |
INSERT INTO t1 VALUES ('000',' 0',' 0','Text 001',0), ('000',' 0',' 1','Text 002',0),
|
|
638 |
('000',' 1',' 2','Text 003',0), ('000',' 2',' 3','Text 004',0),
|
|
639 |
('001',' 3',' 0','Text 017',0);
|
|
640 |
SELECT count(*) FROM t1 WHERE CLIENT='000' AND (ARG1 != ' 1' OR ARG1 != ' 2');
|
|
641 |
count(*)
|
|
642 |
4
|
|
643 |
SELECT count(*) FROM t1 WHERE CLIENT='000' AND (ARG1 != ' 2' OR ARG1 != ' 1');
|
|
644 |
count(*)
|
|
645 |
4
|
|
646 |
drop table t1;
|
|
647 |
create table t1 (a int);
|
|
648 |
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
649 |
CREATE TABLE t2 (
|
|
650 |
pk1 int(11) NOT NULL,
|
|
651 |
pk2 int(11) NOT NULL,
|
|
652 |
pk3 int(11) NOT NULL,
|
|
653 |
pk4 int(11) NOT NULL,
|
|
654 |
filler char(82),
|
|
655 |
PRIMARY KEY (pk1,pk2,pk3,pk4)
|
|
656 |
) DEFAULT CHARSET=latin1;
|
|
657 |
insert into t2 select 1, A.a+10*B.a, 432, 44, 'fillerZ' from t1 A, t1 B;
|
|
658 |
INSERT INTO t2 VALUES (2621, 2635, 0, 0,'filler'), (2621, 2635, 1, 0,'filler'),
|
|
659 |
(2621, 2635, 10, 0,'filler'), (2621, 2635, 11, 0,'filler'),
|
|
660 |
(2621, 2635, 14, 0,'filler'), (2621, 2635, 1000015, 0,'filler');
|
|
661 |
SELECT * FROM t2
|
|
662 |
WHERE ((((pk4 =0) AND (pk1 =2621) AND (pk2 =2635)))
|
|
663 |
OR ((pk4 =1) AND (((pk1 IN ( 7, 2, 1 ))) OR (pk1 =522)) AND ((pk2 IN ( 0, 2635))))
|
|
664 |
) AND (pk3 >=1000000);
|
|
665 |
pk1 pk2 pk3 pk4 filler
|
|
666 |
2621 2635 1000015 0 filler
|
|
667 |
drop table t1, t2;
|
|
668 |
create table t1(a char(2), key(a(1)));
|
|
669 |
insert into t1 values ('x'), ('xx');
|
|
670 |
explain select a from t1 where a > 'x';
|
|
671 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
672 |
1 SIMPLE t1 range a a 2 NULL 2 Using where
|
|
673 |
select a from t1 where a > 'x';
|
|
674 |
a
|
|
675 |
xx
|
|
676 |
drop table t1;
|
|
677 |
CREATE TABLE t1 (
|
|
678 |
OXID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
|
|
679 |
OXPARENTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT 'oxrootid',
|
|
680 |
OXLEFT int NOT NULL DEFAULT '0',
|
|
681 |
OXRIGHT int NOT NULL DEFAULT '0',
|
|
682 |
OXROOTID varchar(32) COLLATE latin1_german2_ci NOT NULL DEFAULT '',
|
|
683 |
PRIMARY KEY (OXID),
|
|
684 |
KEY OXNID (OXID),
|
|
685 |
KEY OXLEFT (OXLEFT),
|
|
686 |
KEY OXRIGHT (OXRIGHT),
|
|
687 |
KEY OXROOTID (OXROOTID)
|
|
688 |
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_german2_ci;
|
|
689 |
INSERT INTO t1 VALUES
|
|
690 |
('d8c4177d09f8b11f5.52725521','oxrootid',1,40,'d8c4177d09f8b11f5.52725521'),
|
|
691 |
('d8c4177d151affab2.81582770','d8c4177d09f8b11f5.52725521',2,3,
|
|
692 |
'd8c4177d09f8b11f5.52725521'),
|
|
693 |
('d8c4177d206a333d2.74422679','d8c4177d09f8b11f5.52725521',4,5,
|
|
694 |
'd8c4177d09f8b11f5.52725521'),
|
|
695 |
('d8c4177d225791924.30714720','d8c4177d09f8b11f5.52725521',6,7,
|
|
696 |
'd8c4177d09f8b11f5.52725521'),
|
|
697 |
('d8c4177d2380fc201.39666693','d8c4177d09f8b11f5.52725521',8,9,
|
|
698 |
'd8c4177d09f8b11f5.52725521'),
|
|
699 |
('d8c4177d24ccef970.14957924','d8c4177d09f8b11f5.52725521',10,11,
|
|
700 |
'd8c4177d09f8b11f5.52725521');
|
|
701 |
EXPLAIN
|
|
702 |
SELECT s.oxid FROM t1 v, t1 s
|
|
703 |
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
|
|
704 |
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
|
|
705 |
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
|
|
706 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
707 |
1 SIMPLE v ref OXLEFT,OXRIGHT,OXROOTID OXROOTID 34 const 5 Using index condition
|
|
708 |
1 SIMPLE s ALL OXLEFT NULL NULL NULL 6 Range checked for each record (index map: 0x4)
|
|
709 |
SELECT s.oxid FROM t1 v, t1 s
|
|
710 |
WHERE s.oxrootid = 'd8c4177d09f8b11f5.52725521' AND
|
|
711 |
v.oxrootid ='d8c4177d09f8b11f5.52725521' AND
|
|
712 |
s.oxleft > v.oxleft AND s.oxleft < v.oxright;
|
|
713 |
oxid
|
|
714 |
d8c4177d151affab2.81582770
|
|
715 |
d8c4177d206a333d2.74422679
|
|
716 |
d8c4177d225791924.30714720
|
|
717 |
d8c4177d2380fc201.39666693
|
|
718 |
d8c4177d24ccef970.14957924
|
|
719 |
DROP TABLE t1;
|
|
720 |
create table t1 (
|
|
721 |
c1 char(10), c2 char(10), c3 char(10), c4 char(10),
|
|
722 |
c5 char(10), c6 char(10), c7 char(10), c8 char(10),
|
|
723 |
c9 char(10), c10 char(10), c11 char(10), c12 char(10),
|
|
724 |
c13 char(10), c14 char(10), c15 char(10), c16 char(10),
|
|
725 |
index(c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12,c13,c14,c15,c16)
|
|
726 |
);
|
|
727 |
insert into t1 (c1) values ('1'),('1'),('1'),('1');
|
|
728 |
select * from t1 where
|
|
729 |
c1 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
730 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
731 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
732 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
733 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
734 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
735 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
736 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
737 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
738 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
739 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
740 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
741 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
742 |
and c2 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
743 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
744 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
745 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
746 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
747 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
748 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
749 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
750 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
751 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
752 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
753 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
754 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
755 |
and c3 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
756 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
757 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
758 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
759 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
760 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
761 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
762 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
763 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
764 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
765 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
766 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
767 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
768 |
and c4 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
769 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
770 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
771 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
772 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
773 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
774 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
775 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
776 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
777 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
778 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
779 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
780 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
781 |
and c5 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
782 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
783 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
784 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
785 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
786 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
787 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
788 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
789 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
790 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
791 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
792 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
793 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
794 |
and c6 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
795 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
796 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
797 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
798 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
799 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
800 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
801 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
802 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
803 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
804 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
805 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
806 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
807 |
and c7 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
808 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
809 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
810 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
811 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
812 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
813 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
814 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
815 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
816 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
817 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
818 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
819 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
820 |
and c8 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
821 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
822 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
823 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
824 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
825 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
826 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
827 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
828 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
829 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
830 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
831 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
832 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
833 |
and c9 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
834 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
835 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
836 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
837 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
838 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
839 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
840 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
841 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
842 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
843 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
844 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
845 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC")
|
|
846 |
and c10 in ("abcdefgh", "123456789", "qwertyuio", "asddfgh",
|
|
847 |
"abcdefg1", "123456781", "qwertyui1", "asddfg1",
|
|
848 |
"abcdefg2", "123456782", "qwertyui2", "asddfg2",
|
|
849 |
"abcdefg3", "123456783", "qwertyui3", "asddfg3",
|
|
850 |
"abcdefg4", "123456784", "qwertyui4", "asddfg4",
|
|
851 |
"abcdefg5", "123456785", "qwertyui5", "asddfg5",
|
|
852 |
"abcdefg6", "123456786", "qwertyui6", "asddfg6",
|
|
853 |
"abcdefg7", "123456787", "qwertyui7", "asddfg7",
|
|
854 |
"abcdefg8", "123456788", "qwertyui8", "asddfg8",
|
|
855 |
"abcdefg9", "123456789", "qwertyui9", "asddfg9",
|
|
856 |
"abcdefgA", "12345678A", "qwertyuiA", "asddfgA",
|
|
857 |
"abcdefgB", "12345678B", "qwertyuiB", "asddfgB",
|
|
858 |
"abcdefgC", "12345678C", "qwertyuiC", "asddfgC");
|
|
859 |
c1 c2 c3 c4 c5 c6 c7 c8 c9 c10 c11 c12 c13 c14 c15 c16
|
|
860 |
drop table t1;
|
|
861 |
End of 4.1 tests
|
|
862 |
CREATE TABLE t1 (
|
|
863 |
id int(11) NOT NULL auto_increment,
|
|
864 |
status varchar(20),
|
|
865 |
PRIMARY KEY (id),
|
|
866 |
KEY (status)
|
|
867 |
);
|
|
868 |
INSERT INTO t1 VALUES
|
|
869 |
(1,'B'), (2,'B'), (3,'B'), (4,'B'), (5,'B'), (6,'B'),
|
|
870 |
(7,'B'), (8,'B'), (9,'B'), (10,'B'), (11,'B'), (12,'B'),
|
|
871 |
(13,'B'), (14,'B'), (15,'B'), (16,'B'), (17,'B'), (18,'B'),
|
|
872 |
(19,'B'), (20,'B'), (21,'B'), (22,'B'), (23,'B'), (24,'B'),
|
|
873 |
(25,'A'), (26,'A'), (27,'A'), (28,'A'), (29,'A'), (30,'A'),
|
|
874 |
(31,'A'), (32,'A'), (33,'A'), (34,'A'), (35,'A'), (36,'A'),
|
|
875 |
(37,'A'), (38,'A'), (39,'A'), (40,'A'), (41,'A'), (42,'A'),
|
|
876 |
(43,'A'), (44,'A'), (45,'A'), (46,'A'), (47,'A'), (48,'A'),
|
|
877 |
(49,'A'), (50,'A'), (51,'A'), (52,'A'), (53,'C'), (54,'C'),
|
|
878 |
(55,'C'), (56,'C'), (57,'C'), (58,'C'), (59,'C'), (60,'C');
|
|
879 |
EXPLAIN SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B';
|
|
880 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
881 |
1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Using MRR
|
|
882 |
EXPLAIN SELECT * FROM t1 WHERE status NOT IN ('A','B');
|
|
883 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
884 |
1 SIMPLE t1 range status status 23 NULL 11 Using index condition; Using MRR
|
|
885 |
SELECT * FROM t1 WHERE status <> 'A' AND status <> 'B';
|
|
886 |
id status
|
|
887 |
53 C
|
|
888 |
54 C
|
|
889 |
55 C
|
|
890 |
56 C
|
|
891 |
57 C
|
|
892 |
58 C
|
|
893 |
59 C
|
|
894 |
60 C
|
|
895 |
SELECT * FROM t1 WHERE status NOT IN ('A','B');
|
|
896 |
id status
|
|
897 |
53 C
|
|
898 |
54 C
|
|
899 |
55 C
|
|
900 |
56 C
|
|
901 |
57 C
|
|
902 |
58 C
|
|
903 |
59 C
|
|
904 |
60 C
|
|
905 |
EXPLAIN SELECT status FROM t1 WHERE status <> 'A' AND status <> 'B';
|
|
906 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
907 |
1 SIMPLE t1 range status status 23 NULL 11 Using where; Using index
|
|
908 |
EXPLAIN SELECT status FROM t1 WHERE status NOT IN ('A','B');
|
|
909 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
910 |
1 SIMPLE t1 range status status 23 NULL 11 Using where; Using index
|
|
911 |
EXPLAIN SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
|
|
912 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
913 |
1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Using MRR
|
|
914 |
EXPLAIN SELECT * FROM t1 WHERE status < 'A' OR status > 'B';
|
|
915 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
916 |
1 SIMPLE t1 range status status 23 NULL 10 Using index condition; Using MRR
|
|
917 |
SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
|
|
918 |
id status
|
|
919 |
53 C
|
|
920 |
54 C
|
|
921 |
55 C
|
|
922 |
56 C
|
|
923 |
57 C
|
|
924 |
58 C
|
|
925 |
59 C
|
|
926 |
60 C
|
|
927 |
SELECT * FROM t1 WHERE status < 'A' OR status > 'B';
|
|
928 |
id status
|
|
929 |
53 C
|
|
930 |
54 C
|
|
931 |
55 C
|
|
932 |
56 C
|
|
933 |
57 C
|
|
934 |
58 C
|
|
935 |
59 C
|
|
936 |
60 C
|
|
937 |
DROP TABLE t1;
|
|
938 |
CREATE TABLE t1 (a int, b int, primary key(a,b));
|
|
939 |
INSERT INTO t1 VALUES
|
|
940 |
(1,1),(1,2),(1,3),(2,1),(2,2),(2,3),(3,1),(3,2),(3,3),(4,1),(4,2),(4,3);
|
|
941 |
CREATE VIEW v1 as SELECT a,b FROM t1 WHERE b=3;
|
|
942 |
EXPLAIN SELECT a,b FROM t1 WHERE a < 2 and b=3;
|
|
943 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
944 |
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
|
|
945 |
EXPLAIN SELECT a,b FROM v1 WHERE a < 2 and b=3;
|
|
946 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
947 |
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
|
|
948 |
EXPLAIN SELECT a,b FROM t1 WHERE a < 2;
|
|
949 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
950 |
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
|
|
951 |
EXPLAIN SELECT a,b FROM v1 WHERE a < 2;
|
|
952 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
953 |
1 SIMPLE t1 range PRIMARY PRIMARY 4 NULL 4 Using where; Using index
|
|
954 |
SELECT a,b FROM t1 WHERE a < 2 and b=3;
|
|
955 |
a b
|
|
956 |
1 3
|
|
957 |
SELECT a,b FROM v1 WHERE a < 2 and b=3;
|
|
958 |
a b
|
|
959 |
1 3
|
|
960 |
DROP VIEW v1;
|
|
961 |
DROP TABLE t1;
|
|
962 |
CREATE TABLE t1 (name varchar(15) NOT NULL, KEY idx(name));
|
|
963 |
INSERT INTO t1 VALUES ('Betty'), ('Anna');
|
|
964 |
SELECT * FROM t1;
|
|
965 |
name
|
|
966 |
Anna
|
|
967 |
Betty
|
|
968 |
DELETE FROM t1 WHERE name NOT LIKE 'A%a';
|
|
969 |
SELECT * FROM t1;
|
|
970 |
name
|
|
971 |
Anna
|
|
972 |
DROP TABLE t1;
|
|
973 |
CREATE TABLE t1 (a int, KEY idx(a));
|
|
974 |
INSERT INTO t1 VALUES (NULL), (1), (2), (3);
|
|
975 |
SELECT * FROM t1;
|
|
976 |
a
|
|
977 |
NULL
|
|
978 |
1
|
|
979 |
2
|
|
980 |
3
|
|
981 |
DELETE FROM t1 WHERE NOT(a <=> 2);
|
|
982 |
SELECT * FROM t1;
|
|
983 |
a
|
|
984 |
2
|
|
985 |
DROP TABLE t1;
|
|
986 |
create table t1 (a int, b int, primary key(a,b));
|
|
987 |
create view v1 as select a, b from t1;
|
|
988 |
INSERT INTO `t1` VALUES
|
|
989 |
(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)
|
|
990 |
,(13,2),(14,2),(15,3),(16,3),(17,3),(18,3),(19,3);
|
|
991 |
explain select * from t1 where a in (3,4) and b in (1,2,3);
|
|
992 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
993 |
1 SIMPLE t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
|
|
994 |
explain select * from v1 where a in (3,4) and b in (1,2,3);
|
|
995 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
996 |
1 SIMPLE t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
|
|
997 |
explain select * from t1 where a between 3 and 4 and b between 1 and 2;
|
|
998 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
999 |
1 SIMPLE t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
|
|
1000 |
explain select * from v1 where a between 3 and 4 and b between 1 and 2;
|
|
1001 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1002 |
1 SIMPLE t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
|
|
1003 |
drop view v1;
|
|
1004 |
drop table t1;
|
|
1005 |
create table t3 (a int);
|
|
1006 |
insert into t3 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
1007 |
create table t1 (a varchar(10), filler char(200), key(a)) charset=binary;
|
|
1008 |
insert into t1 values ('a','');
|
|
1009 |
insert into t1 values ('a ','');
|
|
1010 |
insert into t1 values ('a ', '');
|
|
1011 |
insert into t1 select concat('a', 1000 + A.a + 10 * (B.a + 10 * C.a)), ''
|
|
1012 |
from t3 A, t3 B, t3 C;
|
|
1013 |
create table t2 (a varchar(10), filler char(200), key(a));
|
|
1014 |
insert into t2 select * from t1;
|
|
1015 |
explain select * from t1 where a between 'a' and 'a ';
|
|
1016 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1017 |
1 SIMPLE t1 range a a 13 NULL # Using index condition; Using MRR
|
|
1018 |
explain select * from t1 where a = 'a' or a='a ';
|
|
1019 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1020 |
1 SIMPLE t1 range a a 13 NULL # Using index condition; Using MRR
|
|
1021 |
explain select * from t2 where a between 'a' and 'a ';
|
|
1022 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1023 |
1 SIMPLE t2 ref a a 13 const # Using index condition
|
|
1024 |
explain select * from t2 where a = 'a' or a='a ';
|
|
1025 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1026 |
1 SIMPLE t2 ref a a 13 const # Using index condition
|
|
1027 |
update t1 set a='b' where a<>'a';
|
|
1028 |
explain select * from t1 where a not between 'b' and 'b';
|
|
1029 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1030 |
1 SIMPLE t1 range a a 13 NULL # Using index condition; Using MRR
|
|
1031 |
select a, hex(filler) from t1 where a not between 'b' and 'b';
|
|
1032 |
a hex(filler)
|
|
1033 |
a 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
|
|
1034 |
drop table t1,t2,t3;
|
|
1035 |
create table t1 (a int);
|
|
1036 |
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
|
|
1037 |
create table t2 (a int, key(a));
|
|
1038 |
insert into t2 select 2*(A.a + 10*(B.a + 10*C.a)) from t1 A, t1 B, t1 C;
|
|
1039 |
set @a="select * from t2 force index (a) where a NOT IN(0";
|
|
1040 |
select count(*) from (select @a:=concat(@a, ',', a) from t2 ) Z;
|
|
1041 |
count(*)
|
|
1042 |
1000
|
|
1043 |
set @a=concat(@a, ')');
|
|
1044 |
insert into t2 values (11),(13),(15);
|
|
1045 |
set @b= concat("explain ", @a);
|
|
1046 |
prepare stmt1 from @b;
|
|
1047 |
execute stmt1;
|
|
1048 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1049 |
1 SIMPLE t2 index a a 5 NULL 1003 Using where; Using index
|
|
1050 |
prepare stmt1 from @a;
|
|
1051 |
execute stmt1;
|
|
1052 |
a
|
|
1053 |
11
|
|
1054 |
13
|
|
1055 |
15
|
|
1056 |
drop table t1, t2;
|
|
1057 |
CREATE TABLE t1 (
|
|
1058 |
id int NOT NULL DEFAULT '0',
|
|
1059 |
b int NOT NULL DEFAULT '0',
|
|
1060 |
c int NOT NULL DEFAULT '0',
|
|
1061 |
INDEX idx1(b,c), INDEX idx2(c));
|
|
1062 |
INSERT INTO t1(id) VALUES (1), (2), (3), (4), (5), (6), (7), (8);
|
|
1063 |
INSERT INTO t1(b,c) VALUES (3,4), (3,4);
|
|
1064 |
SELECT * FROM t1 WHERE b<=3 AND 3<=c;
|
|
1065 |
id b c
|
|
1066 |
0 3 4
|
|
1067 |
0 3 4
|
|
1068 |
SELECT * FROM t1 WHERE 3 BETWEEN b AND c;
|
|
1069 |
id b c
|
|
1070 |
0 3 4
|
|
1071 |
0 3 4
|
|
1072 |
EXPLAIN SELECT * FROM t1 WHERE b<=3 AND 3<=c;
|
|
1073 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1074 |
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using index condition; Using where; Using MRR
|
|
1075 |
EXPLAIN SELECT * FROM t1 WHERE 3 BETWEEN b AND c;
|
|
1076 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1077 |
1 SIMPLE t1 range idx1,idx2 idx2 4 NULL 3 Using where; Using MRR
|
|
1078 |
SELECT * FROM t1 WHERE 0 < b OR 0 > c;
|
|
1079 |
id b c
|
|
1080 |
0 3 4
|
|
1081 |
0 3 4
|
|
1082 |
SELECT * FROM t1 WHERE 0 NOT BETWEEN b AND c;
|
|
1083 |
id b c
|
|
1084 |
0 3 4
|
|
1085 |
0 3 4
|
|
1086 |
EXPLAIN SELECT * FROM t1 WHERE 0 < b OR 0 > c;
|
|
1087 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1088 |
1 SIMPLE t1 ALL idx1,idx2 NULL NULL NULL 10 Using where
|
|
1089 |
EXPLAIN SELECT * FROM t1 WHERE 0 NOT BETWEEN b AND c;
|
|
1090 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1091 |
1 SIMPLE t1 ALL idx1,idx2 NULL NULL NULL 10 Using where
|
|
1092 |
DROP TABLE t1;
|
|
1093 |
CREATE TABLE t1 (
|
|
1094 |
item char(20) NOT NULL default '',
|
|
1095 |
started datetime NOT NULL default '0000-00-00 00:00:00',
|
|
1096 |
price decimal(16,3) NOT NULL default '0.000',
|
|
1097 |
PRIMARY KEY (item,started)
|
|
1098 |
) ENGINE=MyISAM;
|
|
1099 |
INSERT INTO t1 VALUES
|
|
1100 |
('A1','2005-11-01 08:00:00',1000),
|
|
1101 |
('A1','2005-11-15 00:00:00',2000),
|
|
1102 |
('A1','2005-12-12 08:00:00',3000),
|
|
1103 |
('A2','2005-12-01 08:00:00',1000);
|
|
1104 |
EXPLAIN SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
|
|
1105 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1106 |
1 SIMPLE t1 ref PRIMARY PRIMARY 20 const 2 Using index condition
|
|
1107 |
Warnings:
|
|
1108 |
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
|
|
1109 |
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
|
|
1110 |
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
|
|
1111 |
item started price
|
|
1112 |
A1 2005-11-01 08:00:00 1000.000
|
|
1113 |
A1 2005-11-15 00:00:00 2000.000
|
|
1114 |
Warnings:
|
|
1115 |
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
|
|
1116 |
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
|
|
1117 |
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-02 00:00:00';
|
|
1118 |
item started price
|
|
1119 |
A1 2005-11-01 08:00:00 1000.000
|
|
1120 |
A1 2005-11-15 00:00:00 2000.000
|
|
1121 |
DROP INDEX `PRIMARY` ON t1;
|
|
1122 |
EXPLAIN SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
|
|
1123 |
id select_type table type possible_keys key key_len ref rows Extra
|
|
1124 |
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where
|
|
1125 |
Warnings:
|
|
1126 |
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
|
|
1127 |
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-01 24:00:00';
|
|
1128 |
item started price
|
|
1129 |
A1 2005-11-01 08:00:00 1000.000
|
|
1130 |
A1 2005-11-15 00:00:00 2000.000
|
|
1131 |
Warnings:
|
|
1132 |
Warning 1292 Incorrect datetime value: '2005-12-01 24:00:00' for column 'started' at row 1
|
|
1133 |
SELECT * FROM t1 WHERE item='A1' AND started<='2005-12-02 00:00:00';
|
|
1134 |
item started price
|
|
1135 |
A1 2005-11-01 08:00:00 1000.000
|
|
1136 |
A1 2005-11-15 00:00:00 2000.000
|
|
1137 |
DROP TABLE t1;
|
|
1138 |
||
1139 |
BUG#32198 "Comparison of DATE with DATETIME still not using indexes correctly" |
|
1140 |
||
1141 |
CREATE TABLE t1 ( |
|
1142 |
id int(11) NOT NULL auto_increment, |
|
1143 |
dateval date default NULL, |
|
1144 |
PRIMARY KEY (id), |
|
1145 |
KEY dateval (dateval) |
|
1146 |
) AUTO_INCREMENT=173; |
|
1147 |
INSERT INTO t1 VALUES |
|
1148 |
(1,'2007-01-01'),(2,'2007-01-02'),(3,'2007-01-03'),(4,'2007-01-04'), |
|
1149 |
(5,'2007-01-05'),(6,'2007-01-06'),(7,'2007-01-07'),(8,'2007-01-08'), |
|
1150 |
(9,'2007-01-09'),(10,'2007-01-10'),(11,'2007-01-11'); |
|
1151 |
This must use range access: |
|
1152 |
explain select * from t1 where dateval >= '2007-01-01 00:00:00' and dateval <= '2007-01-02 23:59:59'; |
|
1153 |
id select_type table type possible_keys key key_len ref rows Extra |
|
1154 |
1 SIMPLE t1 range dateval dateval 4 NULL 2 Using index condition; Using MRR |
|
1155 |
drop table t1; |
|
1156 |
CREATE TABLE t1 ( |
|
1157 |
a varchar(32), index (a) |
|
1158 |
) DEFAULT CHARSET=latin1 COLLATE=latin1_bin; |
|
1159 |
INSERT INTO t1 VALUES |
|
1160 |
('B'), ('A'), ('A'), ('C'), ('B'), ('A'), ('A');
|
|
1161 |
SELECT a FROM t1 WHERE a='b' OR a='B'; |
|
1162 |
a |
|
1163 |
B |
|
1164 |
B |
|
1165 |
EXPLAIN SELECT a FROM t1 WHERE a='b' OR a='B'; |
|
1166 |
id select_type table type possible_keys key key_len ref rows Extra |
|
1167 |
1 SIMPLE t1 range a a 35 NULL 3 Using where; Using index |
|
1168 |
DROP TABLE t1; |
|
1169 |
CREATE TABLE t1 (f1 TINYINT(11) UNSIGNED NOT NULL, PRIMARY KEY (f1)); |
|
1170 |
INSERT INTO t1 VALUES (127),(254),(0),(1),(255); |
|
1171 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 256; |
|
1172 |
COUNT(*) |
|
1173 |
5 |
|
1174 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 256.0; |
|
1175 |
COUNT(*) |
|
1176 |
5 |
|
1177 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 255; |
|
1178 |
COUNT(*) |
|
1179 |
4 |
|
1180 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < -1; |
|
1181 |
COUNT(*) |
|
1182 |
0 |
|
1183 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -1; |
|
1184 |
COUNT(*) |
|
1185 |
5 |
|
1186 |
DROP TABLE t1; |
|
1187 |
CREATE TABLE t1 ( f1 TINYINT(11) NOT NULL, PRIMARY KEY (f1)); |
|
1188 |
INSERT INTO t1 VALUES (127),(126),(0),(-128),(-127); |
|
1189 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 128; |
|
1190 |
COUNT(*) |
|
1191 |
5 |
|
1192 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 128.0; |
|
1193 |
COUNT(*) |
|
1194 |
5 |
|
1195 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 < 127; |
|
1196 |
COUNT(*) |
|
1197 |
4 |
|
1198 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -129; |
|
1199 |
COUNT(*) |
|
1200 |
5 |
|
1201 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -129.0; |
|
1202 |
COUNT(*) |
|
1203 |
5 |
|
1204 |
SELECT SQL_NO_CACHE COUNT(*) FROM t1 WHERE f1 > -128; |
|
1205 |
COUNT(*) |
|
1206 |
4 |
|
1207 |
DROP TABLE t1; |
|
1208 |
create table t1 (a int); |
|
1209 |
insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); |
|
1210 |
create table t2 (a int, b int, filler char(100)); |
|
1211 |
insert into t2 select A.a + 10 * (B.a + 10 * C.a), 10, 'filler' from t1 A, |
|
1212 |
t1 B, t1 C where A.a < 5; |
|
1213 |
insert into t2 select 1000, b, 'filler' from t2; |
|
1214 |
alter table t2 add index (a,b); |
|
1215 |
select 'In following EXPLAIN the access method should be ref, #rows~=500 (and not 2)' Z; |
|
1216 |
Z |
|
1217 |
In following EXPLAIN the access method should be ref, #rows~=500 (and not 2) |
|
1218 |
explain select * from t2 where a=1000 and b<11; |
|
1219 |
id select_type table type possible_keys key key_len ref rows Extra |
|
1220 |
1 SIMPLE t2 ref a a 5 const 502 Using index condition |
|
1221 |
drop table t1, t2; |
|
1222 |
End of 5.1 tests |
|
1223 |
CREATE TABLE t1 (c1 DECIMAL(10,0),INDEX(c1)); |
|
1224 |
INSERT INTO t1 VALUES (1),(2),(3); |
|
1225 |
SELECT c1 FROM t1 WHERE c1 >= 'A' GROUP BY 1; |
|
1226 |
c1 |
|
1227 |
1 |
|
1228 |
2 |
|
1229 |
3 |
|
1230 |
Warnings: |
|
1231 |
Warning 1366 Incorrect decimal value: 'A' for column 'c1' at row 1 |
|
1232 |
Warning 1292 Truncated incorrect DOUBLE value: 'A' |
|
1233 |
Warning 1292 Truncated incorrect DOUBLE value: 'A' |
|
1234 |
Warning 1292 Truncated incorrect DOUBLE value: 'A' |
|
1235 |
DROP TABLE t1; |
|
1236 |
create table t1 (a int,b int,key (b),key (a),key (b,a)); |
|
1237 |
insert into t1(a,b) values (1,2),(3,4),(5,6),(7,8); |
|
1238 |
create table t2 (c int); |
|
1239 |
insert into t2(c) values (1),(5),(6),(7),(8); |
|
1240 |
select 1 from (select c from t1,t2 where b >= 1 and a <=> c group by 1 limit 1) as d1; |
|
1241 |
1 |
|
1242 |
1 |
|
1243 |
drop table t1, t2; |