SQL SERVER中常用日期函数的具体使用

SELECT GETDATE()

SELECT DATEADD(YY,1,GETDATE())

SELECT DATEADD(YEAR,1,GETDATE())

SELECT DATEADD(YY,-2,GETDATE())

SELECT DATEADD(YY,2.4,GETDATE())
SELECT DATEADD(YY,2.5,GETDATE())
SELECT DATEADD(YY,2.6,GETDATE())

SELECT DATEDIFF(YY,‘2008/1/1',GETDATE())

SELECT DATEDIFF(YY,GETDATE(),‘2008/1/1')

SELECT DATENAME(YY,GETDATE())

SELECT DATENAME(YY,GETDATE())+DATENAME(QQ,GETDATE()) --QQ 是QUATRER代表季度

SELECT DATEPART(YY,GETDATE())

SELECT DATEPART(YY,GETDATE())+DATEPART(QQ,GETDATE())

SELECT DAY(GETDATE())

SELECT MONTH(GETDATE())

SELECT YEAR (GETDATE())

select convert(varchar(12),getdate(),101) 07/16/2010
select convert(varchar(12),getdate(),102) 2010.07.16
select convert(varchar(12),getdate(),103) 16/07/2010
select convert(varchar(12),getdate(),104) 16.07.2010
select convert(varchar(12),getdate(),105) 16-07-2010
select convert(varchar(12),getdate(),106) 16 Jul 2010
select convert(varchar(12),getdate(),107) Jul 16, 2010
select convert(varchar(12),getdate(),108) 11:58:49
select convert(varchar(12),getdate(),109) Jul 16 2010
select convert(varchar(12),getdate(),110) 07-16-2010
select convert(varchar(12),getdate(),111) 2010/07/16
select convert(varchar(12),getdate(),112) 20100716
select convert(varchar(12),getdate(),113) 16 Jul 2010
select convert(varchar(12),getdate(),114) 11:59:35:930

select  dateadd(mm,datediff(mm,0,getdate()),0)

select  dateadd(wk,datediff(wk,0,getdate()),0)

select dateadd(yyyy,datediff(yyyy,0,getdate()),0)

select dateadd(ms,-3,dateadd(mm,datediff(mm,0,getdate())+1,0))

select dateadd(ms,-3,dateadd(wk,datediff(wk,0,getDate())+1,0));

select dateadd(wk,dateDiff(wk,0,dateadd(dd,6-datepart(day,getdate()),getdate())),0);