range.result

这是linux下运行的mysql软件包,可用于linux 下安装 php + mysql + apach 的网络配置

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	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	index	t1i	t1i	9	NULL	2	Using where; Using index
select * from t1 where a <> -1;
a
18446744073709551614
18446744073709551615
explain select * from t1 where a > -1 or a < -1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	index	t1i	t1i	9	NULL	2	Using where; Using index
select * from t1 where a > -1 or a < -1;
a
18446744073709551614
18446744073709551615
explain select * from t1 where a > -1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	index	t1i	t1i	9	NULL	2	Using where; Using index
select * from t1 where a > -1;
a
18446744073709551614
18446744073709551615
explain select * from t1 where a < -1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
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	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ref	a	a	11	const	2	Using where
explain select * from t1 where a=binary 'aaa';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	a	a	11	NULL	2	Using where
explain select * from t1 where a='aaa' collate latin1_bin;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	a	a	11	NULL	2	Using where
explain select * from t1 where a='aaa' collate latin1_german1_ci;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	9	Using where
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 (
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	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	status	status	23	NULL	11	Using where
EXPLAIN SELECT * FROM t1 WHERE status NOT IN ('A','B');
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	status	status	23	NULL	11	Using where
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	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	status	status	23	NULL	11	Using where; Using index
EXPLAIN SELECT status FROM t1 WHERE status NOT IN ('A','B');
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	status	status	23	NULL	11	Using where; Using index
EXPLAIN SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	status	status	23	NULL	10	Using where
EXPLAIN SELECT * FROM t1 WHERE status < 'A' OR status > 'B';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	status	status	23	NULL	10	Using where
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	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	4	Using where; Using index
EXPLAIN SELECT a,b FROM v1 WHERE a < 2 and b=3;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	range	PRIMARY	PRIMARY	4	NULL	4	Using where; Using index
EXPLAIN SELECT a,b FROM t1 WHERE a < 2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	4	Using where; Using index
EXPLAIN SELECT a,b FROM v1 WHERE a < 2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	range	PRIMARY	PRIMARY	4	NULL	4	Using where; Using index
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	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	PRIMARY	PRIMARY	8	NULL	#	Using where; Using index
explain select * from v1 where a in (3,4)  and b in (1,2,3);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	range	PRIMARY	PRIMARY	8	NULL	#	Using where; Using index
explain select * from t1 where a between 3 and 4 and b between 1 and 2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	PRIMARY	PRIMARY	8	NULL	#	Using where; Using index
explain select * from v1 where a between 3 and 4 and b between 1 and 2;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	PRIMARY	t1	range	PRIMARY	PRIMARY	8	NULL	#	Using where; Using index
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	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	a	a	13	NULL	#	Using where
explain select * from t1 where a = 'a' or a='a ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	a	a	13	NULL	#	Using where
explain select * from t2 where a between 'a' and 'a ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	a	a	13	const	#	Using where
explain select * from t2 where a = 'a' or a='a ';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	a	a	13	const	#	Using where
update t1 set a='b' where a<>'a';
explain select * from t1 where a not between 'b' and 'b';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	range	a	a	13	NULL	#	Using where
select a, hex(filler) from t1 where a not between 'b' and 'b';
a	hex(filler)
a	0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
drop table t1,t2,t3;