select.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

4181	4	41804
select t2nr,count(*) from t3 where name='gems' group by t2nr limit 20;
t2nr	count(*)
9	1
19	1
29	1
39	1
49	1
59	1
69	1
79	1
89	1
99	1
109	1
119	1
129	1
139	1
149	1
159	1
169	1
179	1
189	1
199	1
select max(t2nr) from t3 where price=983543950;
max(t2nr)
41807
select t1.period from t3 = t1 limit 1;
period
1001
select t1.period from t1 as t1 limit 1;
period
9410
select t1.period as "Nuvarande period" from t1 as t1 limit 1;
Nuvarande period
9410
select period as ok_period from t1 limit 1;
ok_period
9410
select period as ok_period from t1 group by ok_period limit 1;
ok_period
9410
select 1+1 as summa from t1 group by summa limit 1;
summa
2
select period as "Nuvarande period" from t1 group by "Nuvarande period" limit 1;
Nuvarande period
9410
show tables;
Tables_in_test
t1
t2
t3
t4
show tables from test like "s%";
Tables_in_test (s%)
show tables from test like "t?";
Tables_in_test (t?)
show full columns from t2;
Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
auto	int(11)	NULL	NO	PRI	NULL	auto_increment	#	
fld1	int(6) unsigned zerofill	NULL	NO	UNI	000000		#	
companynr	tinyint(2) unsigned zerofill	NULL	NO		00		#	
fld3	char(30)	latin1_swedish_ci	NO	MUL			#	
fld4	char(35)	latin1_swedish_ci	NO				#	
fld5	char(35)	latin1_swedish_ci	NO				#	
fld6	char(4)	latin1_swedish_ci	NO				#	
show full columns from t2 from test like 'f%';
Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
fld1	int(6) unsigned zerofill	NULL	NO	UNI	000000		#	
fld3	char(30)	latin1_swedish_ci	NO	MUL			#	
fld4	char(35)	latin1_swedish_ci	NO				#	
fld5	char(35)	latin1_swedish_ci	NO				#	
fld6	char(4)	latin1_swedish_ci	NO				#	
show full columns from t2 from test like 's%';
Field	Type	Collation	Null	Key	Default	Extra	Privileges	Comment
show keys from t2;
Table	Non_unique	Key_name	Seq_in_index	Column_name	Collation	Cardinality	Sub_part	Packed	Null	Index_type	Comment
t2	0	PRIMARY	1	auto	A	1199	NULL	NULL		BTREE	
t2	0	fld1	1	fld1	A	1199	NULL	NULL		BTREE	
t2	1	fld3	1	fld3	A	NULL	NULL	NULL		BTREE	
drop table t4, t3, t2, t1;
DO 1;
DO benchmark(100,1+1),1,1;
do default;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
do foobar;
ERROR 42S22: Unknown column 'foobar' in 'field list'
CREATE TABLE t1 (
id mediumint(8) unsigned NOT NULL auto_increment,
pseudo varchar(35) NOT NULL default '',
PRIMARY KEY  (id),
UNIQUE KEY pseudo (pseudo)
);
INSERT INTO t1 (pseudo) VALUES ('test');
INSERT INTO t1 (pseudo) VALUES ('test1');
SELECT 1 as rnd1 from t1 where rand() > 2;
rnd1
DROP TABLE t1;
CREATE TABLE t1 (gvid int(10) unsigned default NULL,  hmid int(10) unsigned default NULL,  volid int(10) unsigned default NULL,  mmid int(10) unsigned default NULL,  hdid int(10) unsigned default NULL,  fsid int(10) unsigned default NULL,  ctid int(10) unsigned default NULL,  dtid int(10) unsigned default NULL,  cost int(10) unsigned default NULL,  performance int(10) unsigned default NULL,  serialnumber bigint(20) unsigned default NULL,  monitored tinyint(3) unsigned default '1',  removed tinyint(3) unsigned default '0',  target tinyint(3) unsigned default '0',  dt_modified timestamp NOT NULL,  name varchar(255) binary default NULL,  description varchar(255) default NULL,  UNIQUE KEY hmid (hmid,volid)) ENGINE=MyISAM;
INSERT INTO t1 VALUES (200001,2,1,1,100,1,1,1,0,0,0,1,0,1,20020425060057,'\\\\ARKIVIO-TESTPDC\\E$',''),(200002,2,2,1,101,1,1,1,0,0,0,1,0,1,20020425060057,'\\\\ARKIVIO-TESTPDC\\C$',''),(200003,1,3,2,NULL,NULL,NULL,NULL,NULL,NULL,NULL,1,0,1,20020425060427,'c:',NULL);
CREATE TABLE t2 (  hmid int(10) unsigned default NULL,  volid int(10) unsigned default NULL,  sampletid smallint(5) unsigned default NULL,  sampletime datetime default NULL,  samplevalue bigint(20) unsigned default NULL,  KEY idx1 (hmid,volid,sampletid,sampletime)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (1,3,10,'2002-06-01 08:00:00',35),(1,3,1010,'2002-06-01 12:00:01',35);
SELECT a.gvid, (SUM(CASE b.sampletid WHEN 140 THEN b.samplevalue ELSE 0 END)) as the_success,(SUM(CASE b.sampletid WHEN 141 THEN b.samplevalue ELSE 0 END)) as the_fail,(SUM(CASE b.sampletid WHEN 142 THEN b.samplevalue ELSE 0 END)) as the_size,(SUM(CASE b.sampletid WHEN 143 THEN b.samplevalue ELSE 0 END)) as the_time FROM t1 a, t2 b WHERE a.hmid = b.hmid AND a.volid = b.volid AND b.sampletime >= 'wrong-date-value' AND b.sampletime < 'wrong-date-value' AND b.sampletid IN (140, 141, 142, 143) GROUP BY a.gvid;
gvid	the_success	the_fail	the_size	the_time
Warnings:
Warning	1292	Incorrect datetime value: 'wrong-date-value' for column 'sampletime' at row 1
Warning	1292	Incorrect datetime value: 'wrong-date-value' for column 'sampletime' at row 1
SELECT a.gvid, (SUM(CASE b.sampletid WHEN 140 THEN b.samplevalue ELSE 0 END)) as the_success,(SUM(CASE b.sampletid WHEN 141 THEN b.samplevalue ELSE 0 END)) as the_fail,(SUM(CASE b.sampletid WHEN 142 THEN b.samplevalue ELSE 0 END)) as the_size,(SUM(CASE b.sampletid WHEN 143 THEN b.samplevalue ELSE 0 END)) as the_time FROM t1 a, t2 b WHERE a.hmid = b.hmid AND a.volid = b.volid AND b.sampletime >= NULL AND b.sampletime < NULL AND b.sampletid IN (140, 141, 142, 143) GROUP BY a.gvid;
gvid	the_success	the_fail	the_size	the_time
DROP TABLE t1,t2;
create table  t1 (  A_Id bigint(20) NOT NULL default '0',  A_UpdateBy char(10) NOT NULL default '',  A_UpdateDate bigint(20) NOT NULL default '0',  A_UpdateSerial int(11) NOT NULL default '0',  other_types bigint(20) NOT NULL default '0',  wss_type bigint(20) NOT NULL default '0');
INSERT INTO t1 VALUES (102935998719055004,'brade',1029359987,2,102935229116544068,102935229216544093);
select wss_type from t1 where wss_type ='102935229216544106';
wss_type
select wss_type from t1 where wss_type ='102935229216544105';
wss_type
select wss_type from t1 where wss_type ='102935229216544104';
wss_type
select wss_type from t1 where wss_type ='102935229216544093';
wss_type
102935229216544093
select wss_type from t1 where wss_type =102935229216544093;
wss_type
102935229216544093
drop table t1;
select 1+2,"aaaa",3.13*2.0 into @a,@b,@c;
select @a;
@a
3
select @b;
@b
aaaa
select @c;
@c
6.260
create table t1 (a int not null auto_increment primary key);
insert into t1 values ();
insert into t1 values ();
insert into t1 values ();
select * from (t1 as t2 left join t1 as t3 using (a)), t1;
a	a
1	1
2	1
3	1
1	2
2	2
3	2
1	3
2	3
3	3
select * from t1, (t1 as t2 left join t1 as t3 using (a));
a	a
1	1
2	1
3	1
1	2
2	2
3	2
1	3
2	3
3	3
select * from (t1 as t2 left join t1 as t3 using (a)) straight_join t1;
a	a
1	1
2	1
3	1
1	2
2	2
3	2
1	3
2	3
3	3
select * from t1 straight_join (t1 as t2 left join t1 as t3 using (a));
a	a
1	1
2	1
3	1
1	2
2	2
3	2
1	3
2	3
3	3
select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 on t1.a>1;
a	a
1	2
2	2
3	2
1	3
2	3
3	3
select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1;
a	a
2	1
3	1
2	2
3	2
2	3
3	3
select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 using ( a );
a
1
2
3
select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) using ( a );
a
1
2
3
select * from (t1 as t2 left join t1 as t3 using (a)) left outer join t1 on t1.a>1;
a	a
1	2
1	3
2	2
2	3
3	2
3	3
select * from t1 left outer join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1;
a	a
1	NULL
2	1
2	2
2	3
3	1
3	2
3	3
select * from (t1 as t2 left join t1 as t3 using (a)) left join t1 using ( a );
a
1
2
3
select * from t1 left join (t1 as t2 left join t1 as t3 using (a)) using ( a );
a
1
2
3
select * from (t1 as t2 left join t1 as t3 using (a)) natural left join t1;
a
1
2
3
select * from t1 natural left join (t1 as t2 left join t1 as t3 using (a));
a
1
2
3
select * from (t1 as t2 left join t1 as t3 using (a)) right join t1 on t1.a>1;
a	a
NULL	1
1	2
2	2
3	2
1	3
2	3
3	3
select * from t1 right join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1;
a	a
2	1
3	1
2	2
3	2
2	3
3	3
select * from (t1 as t2 left join t1 as t3 using (a)) right outer join t1 using ( a );
a
1
2
3
select * from t1 right outer join (t1 as t2 left join t1 as t3 using (a)) using ( a );
a
1
2
3
select * from (t1 as t2 left join t1 as t3 using (a)) natural right join t1;
a
1
2
3
select * from t1 natural right join (t1 as t2 left join t1 as t3 using (a));
a
1
2
3
select * from t1 natural join (t1 as t2 left join t1 as t3 using (a));
a
1
2
3
select * from (t1 as t2 left join t1 as t3 using (a)) natural join t1;
a
1
2
3
drop table t1;
CREATE TABLE t1 (  aa char(2),  id int(11) NOT NULL auto_increment,  t2_id int(11) NOT NULL default '0',  PRIMARY KEY  (id),  KEY replace_id (t2_id)) ENGINE=MyISAM;
INSERT INTO t1 VALUES ("1",8264,2506),("2",8299,2517),("3",8301,2518),("4",8302,2519),("5",8303,2520),("6",8304,2521),("7",8305,2522);
CREATE TABLE t2 ( id int(11) NOT NULL auto_increment,  PRIMARY KEY  (id)) ENGINE=MyISAM;
INSERT INTO t2 VALUES (2517), (2518), (2519), (2520), (2521), (2522);
select * from t1, t2 WHERE t1.t2_id = t2.id and t1.t2_id > 0   order by t1.id   LIMIT 0, 5;
aa	id	t2_id	id
2	8299	2517	2517
3	8301	2518	2518
4	8302	2519	2519
5	8303	2520	2520
6	8304	2521	2521
drop table t1,t2;
create table t1 (id1 int NOT NULL);
create table t2 (id2 int NOT NULL);
create table t3 (id3 int NOT NULL);
create table t4 (id4 int NOT NULL, id44 int NOT NULL, KEY (id4));
insert into t1 values (1);
insert into t1 values (2);
insert into t2 values (1);
insert into t4 values (1,1);
explain select * from t1 left join t2 on id1 = id2 left join t3 on id1 = id3
left join t4 on id3 = id4 where id2 = 1 or id4 = 1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t3	system	NULL	NULL	NULL	NULL	0	const row not found
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	
1	SIMPLE	t2	ALL	NULL	NULL	NULL	NULL	1	
1	SIMPLE	t4	ALL	id4	NULL	NULL	NULL	1	Using where
select * from t1 left join t2 on id1 = id2 left join t3 on id1 = id3
left join t4 on id3 = id4 where id2 = 1 or id4 = 1;
id1	id2	id3	id4	id44
1	1	NULL	NULL	NULL
drop table t1,t2,t3,t4;
create table t1(s varchar(10) not null);
create table t2(s varchar(10) not null primary key);
create table t3(s varchar(10) not null primary key);
insert into t1 values ('one\t'), ('two\t');
insert into t2 values ('one\r'), ('two\t');
insert into t3 values ('one '), ('two\t');
select * from t1 where s = 'one';
s
select * from t2 where s = 'one';
s
select * from t3 where s = 'one';
s
one 
select * from t1,t2 where t1.s = t2.s;
s	s
two		two	
select * from t2,t3 where t2.s = t3.s;
s	s
two		two	
drop table t1, t2, t3;
create table t1 (a integer,  b integer, index(a), index(b));
create table t2 (c integer,  d integer, index(c), index(d));
insert into t1 values (1,2), (2,2), (3,2), (4,2);
insert into t2 values (1,3), (2,3), (3,4), (4,4);
explain select * from t1 left join t2 on a=c where d in (4);
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	c,d	d	5	const	2	Using where
1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	3	Using where
select * from t1 left join t2 on a=c where d in (4);
a	b	c	d
3	2	3	4
4	2	4	4
explain select * from t1 left join t2 on a=c where d = 4;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t2	ref	c,d	d	5	const	2	Using where
1	SIMPLE	t1	ALL	a	NULL	NULL	NULL	3	Using where
select * from t1 left join t2 on a=c where d = 4;
a	b	c	d
3	2	3	4
4	2	4	4
drop table t1, t2;
CREATE TABLE t1 (
i int(11) NOT NULL default '0',
c char(10) NOT NULL default '',
PRIMARY KEY  (i),
UNIQUE KEY c (c)
) ENGINE=MyISAM;
INSERT INTO t1 VALUES (1,'a');
INSERT INTO t1 VALUES (2,'b');
INSERT INTO t1 VALUES (3,'c');
EXPLAIN SELECT i FROM t1 WHERE i=1;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	const	PRIMARY	PRIMARY	4	const	1	Using index
DROP TABLE t1;
CREATE TABLE t1 ( a BLOB, INDEX (a(20)) );
CREATE TABLE t2 ( a BLOB, INDEX (a(20)) );
INSERT INTO t1 VALUES ('one'),('two'),('three'),('four'),('five');
INSERT INTO t2 VALUES ('one'),('two'),('three'),('four'),('five');
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 USE INDEX (a) ON t1.a=t2.a;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	
1	SIMPLE	t2	ref	a	a	23	test.t1.a	2	
EXPLAIN SELECT * FROM t1 LEFT JOIN t2 FORCE INDEX (a) ON t1.a=t2.a;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	5	
1	SIMPLE	t2	ref	a	a	23	test.t1.a	2	
DROP TABLE t1, t2;
CREATE TABLE t1 ( city char(30) );
INSERT INTO t1 VALUES ('London');
INSERT INTO t1 VALUES ('Paris');
SELECT * FROM t1 WHERE city='London';
city
London
SELECT * FROM t1 WHERE city='london';
city
London
EXPLAIN SELECT * FROM t1 WHERE city='London' AND city='london';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT * FROM t1 WHERE city='London' AND city='london';
city
London
EXPLAIN SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London';
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	2	Using where
SELECT * FROM t1 WHERE city LIKE '%london%' AND city='London';
city
London
DROP TABLE t1;
create table t1 (a int(11) unsigned, b int(11) unsigned);
insert into t1 values (1,0), (1,1), (1,2);
select a-b  from t1 order by 1;
a-b
0
1
18446744073709551615
select a-b , (a-b < 0)  from t1 order by 1;
a-b	(a-b < 0)
0	0
1	0
18446744073709551615	0
select a-b as d, (a-b >= 0), b from t1 group by b having d >= 0;
d	(a-b >= 0)	b
1	1	0
0	1	1
18446744073709551615	1	2
select cast((a - b) as unsigned) from t1 order by 1;
cast((a - b) as unsigned)
0
1
18446744073709551615
drop table t1;
create table t1 (a int(11));
select all all * from t1;
a
select distinct distinct * from t1;
a
select all distinct * from t1;
ERROR HY000: Incorrect usage of ALL and DISTINCT
select distinct all * from t1;
ERROR HY000: Incorrect usage of ALL and DISTINCT
drop table t1;
CREATE TABLE t1 (
kunde_intern_id int(10) unsigned NOT NULL default '0',
kunde_id int(10) unsigned NOT NULL default '0',
FK_firma_id int(10) unsigned NOT NULL default '0',
aktuell enum('Ja','Nein') NOT NULL default 'Ja',
vorname varchar(128) NOT NULL default '',
nachname varchar(128) NOT NULL default '',
geloescht enum('Ja','Nein') NOT NULL default 'Nein',
firma varchar(128) NOT NULL default ''
);
INSERT INTO t1 VALUES 
(3964,3051,1,'Ja','Vorname1','1Nachname','Nein','Print Schau XXXX'),
(3965,3051111,1,'Ja','Vorname1111','1111Nachname','Nein','Print Schau XXXX');
SELECT kunde_id ,FK_firma_id ,aktuell, vorname, nachname, geloescht FROM t1
WHERE
(
(
( '' != '' AND firma LIKE CONCAT('%', '', '%'))
OR
(vorname LIKE CONCAT('%', 'Vorname1', '%') AND 
nachname LIKE CONCAT('%', '1Nachname', '%') AND 
'Vorname1' != '' AND 'xxxx' != '')
)
AND
(
aktuell = 'Ja' AND geloescht = 'Nein' AND FK_firma_id = 2
)
)
;
kunde_id	FK_firma_id	aktuell	vorname	nachname	geloescht
SELECT kunde_id ,FK_firma_id ,aktuell, vorname, nachname,
geloescht FROM t1
WHERE
(
(
aktuell = 'Ja' AND geloescht = 'Nein' AND FK_firma_id = 2
)
AND
(
( '' != '' AND firma LIKE CONCAT('%', '', '%')  )
OR
(  vorname LIKE CONCAT('%', 'Vorname1', '%') AND
nachname LIKE CONCAT('%', '1Nachname', '%') AND 'Vorname1' != '' AND
'xxxx' != '')
)
)
;
kunde_id	FK_firma_id	aktuell	vorname	nachname	geloescht
SELECT COUNT(*) FROM t1 WHERE 
( 0 OR (vorname LIKE '%Vorname1%' AND nachname LIKE '%1Nachname%' AND 1)) 
AND