📄 range.result
字号:
drop table if exists t1, t2, t3;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_id1999-07-10 100100 241999-07-11 100100 251999-07-13 100600 01999-07-13 100600 41999-07-13 100600 261999-07-14 100600 10explain 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 type possible_keys key key_len ref rows Extra1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHEREselect 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_id1999-07-10 100100 241999-07-11 100100 251999-07-13 100600 01999-07-13 100600 41999-07-13 100600 261999-07-14 100600 101999-07-15 100600 16drop 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 ISSUE1999 291999 301999 311999 321999 331999 341999 35check table t1;Table Op Msg_type Msg_texttest.t1 check status OKrepair table t1;Table Op Msg_type Msg_texttest.t1 repair status OKdrop 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 level3 1 14 1 12 1 16 1 17 1 15 1 1SELECT * FROM t1 WHERE level = 1 AND parent_id = 1 order by id;id parent_id level2 1 13 1 14 1 15 1 16 1 17 1 1drop 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 FullImageCornersLowerRightLatitudeOV-3 PAN1 91 -92 40 50drop 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;aStringbaaabelievebelieve in loveselect * from t1 where aString > "believe in love" order by aString;aStringbelieve in myselfalter table t1 drop key aString;select * from t1 where aString < "believe in myself" order by aString;aStringbaaabelievebelieve in loveselect * from t1 where aString > "believe in love" order by aString;aStringbelieve in myselfdrop 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(*)213select count(*) from t1 where art = 'J' or art = 'j';count(*)602select count(*) from t1 where art = 'j' or art = 'J';count(*)602select count(*) from t1 where art = 'j';count(*)389select count(*) from t1 where art = 'J';count(*)213drop 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;explain select * from t1, t1 t2 where t1.y = 8 and t2.x between 7 and t1.y+0;id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t1 ref y y 5 const 1 Using where1 SIMPLE t2 range x x 5 NULL 2 Using whereexplain select * from t1, t1 t2 where t1.y = 8 and t2.x >= 7 and t2.x <= t1.y+0;id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t1 ref y y 5 const 1 Using where1 SIMPLE t2 range x x 5 NULL 2 Using whereexplain select * from t1, t1 t2 where t1.y = 2 and t2.x between t1.y-1 and t1.y+1;id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t1 ref y y 5 const 1 Using where1 SIMPLE t2 range x x 5 NULL 3 Using whereexplain 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 type possible_keys key key_len ref rows Extra1 SIMPLE t1 ref y y 5 const 1 Using where1 SIMPLE t2 range x x 5 NULL 3 Using whereexplain select * from t1, t1 t2 where t1.y = 2 and t2.x between 0 and t1.y;id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t1 ref y y 5 const 1 Using where1 SIMPLE t2 range x x 5 NULL 2 Using whereexplain select * from t1, t1 t2 where t1.y = 2 and t2.x >= 0 and t2.x <= t1.y;id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t1 ref y y 5 const 1 Using where1 SIMPLE t2 range x x 5 NULL 2 Using whereexplain select count(*) from t1 where x in (1);id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t1 ref x x 5 const 1 Using where; Using indexexplain select count(*) from t1 where x in (1,2);id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t1 index x x 5 NULL 9 Using where; Using indexdrop 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 type possible_keys key key_len ref rows Extra1 SIMPLE t2 ref j1 j1 4 const 1 Using index1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using indexexplain select * from t1 force index(i1), t2 force index(j1) where (t1.key1 <t2.keya + 1) and t2.keya=3;id select_type table type possible_keys key key_len ref rows Extra1 SIMPLE t2 ref j1 j1 4 const 1 Using index1 SIMPLE t1 index i1 i1 4 NULL 7 Using where; Using indexDROP 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),
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -