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select * from pet;
insert into pet values('Liujingwei','Liuchao','cat','f','1984-04-18',null);
UPDATE pet set birth='1989-08-31' WHERE name='Slim';
select * from pet WHERE birth>'1998-1-1';
SELECT * from pet WHEREselect * from pet;
insert into pet values('Liujingwei','Liuchao','cat','f','1984-04-18',null);
UPDATE pet set birth='1989-08-31' WHERE name='Slim';
select * from pet WHERE birth>'1998-1-1';
SELECT * from pet WHERE species='dog' and sex='f';
select * from pet WHERE species='snake' or species='cat';
SELECT * from pet WHERE (species='cat' and sex='m') or (species='dog' and sex='f');
SELECT name,birth from pet;
SELECT owner from pet;
SELECT distinct owner from pet;
SELECT name,species,birth from pet where species='dog' or species='cat';
=======================================================================
select name,birth from pet ORDER BY birth;
select name,birth from pet order by birth desc;
select name,species,birth from pet order by species,birth desc;
========================================================================
select name,birth,curdate(),(year(curdate())-year(birth))-(right(curdate(),5)<right(birth,5)) as age from pet order by name;
select name,birth,curdate(),(year(curdate())-year(birth))-(right(curdate(),5)<right(birth,5)) as age from pet order by age;
select name,birth,curdate(),(year(curdate())-year(birth))-(right(curdate(),5)<right(birth,5)) as age from pet WHERE death IS NOT NULL ORDER BY age;
select name,birth ,month(birth) from pet;
SELECT name, birth from pet WHERE MONTH(birth) = 5;
SELECT name, birth from pet WHERE MONTH(birth) = MONTH(DATE_ADD(CURDATE(),INTERVAL 1 MONTH));
SELECT name, birth from pet WHERE MONTH(birth) = MOD(MONTH(CURDATE()), 12) + 1;
select 1 is null,1 is not null;
select 0 is null, 0 is not null,'' is null,'' is not null;
SELECT * from pet WHERE name LIKE 'b%';
SELECT * from pet WHERE name LIKE '%fy';
SELECT * from pet WHERE name LIKE '%w%';
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/*
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*/
Create function ChineseSpell(@str varchar(100))
returns varchar(8000)
as
begin
declare @re varchar(8000)
--Éú³ÉÁÙʱ±í
declare @t table(chr nchar(1) collate Chinese_PRC_CS_AS_KS_WS,py nvarchar(20))
ins ......
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¡¡¡¡Varbinary[(n)] ÊÇ n λ±ä³¤¶ÈµÄ¶þ½øÖÆÊ ......
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¡¡¡¡DDL—Êý¾Ý¶¨ÒåÓïÑÔ(CREATE£¬ALTER£¬DROP£¬DECLARE)
¡¡¡¡DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
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from: http://blog.163.com/ck275601774/blog/static/1230468012009631113559291/
--ÈÕÆÚת»»²ÎÊý
select CONVERT(varchar,getdate(),120)
--2009-03-15 15:10:02
select replace(replace(replace(CONVERT(varchar, getdate(), 120 ),'-',''),' ',''),':','')
--20090315151201
select CONVERT(varchar(12) , getdate ......