當天

select * from T_news where datediff(day,addtime,getdate())=0

最近三天

 select * from T_news where datediff(day,addtime,getdate())<= 2 and datediff(day,addtime,getdate())>= 0

本週

 select * from T_news WHERE (DATEPART(wk, addtime) = DATEPART(wk, GETDATE())) AND (DATEPART(yy, addtime) = DATEPART
 
(yy, GETDATE()))

注意：此時不能用 datediff 差值為7,因為，datediff只表示間隔數

本月
select * from dbo.dt_article WHERE (DATEPART(yy, add_time) = DATEPART(yy, GETDATE())) AND (DATEPART(mm, add_time) = DATEPART(mm, GETDATE()))

最近一個月

select * from dbo.dt_article WHERE (DATEPART(yy, add_time) = DATEPART(yy, GETDATE())) 
AND
 
 ((DATEPART(mm, addtime) = DATEPART(mm, GETDATE())) OR (31-DATEPART(DD, addtime)+DATEPART(DD, GETDATE()))<=31)

本季度

select * from dbo.dt_article where DATEPART(qq, add_time) = DATEPART(qq, GETDATE()) and DATEPART(yy, add_time) = DATEPART(yy, GETDATE())

本年度

select * from dbo.dt_article where datediff(year
 
,add_time,getdate())=0

前一年

select * from dbo.dt_article where datediff(year,add_time,getdate())=1

備註：上面的sql語句中的add_time是表中的欄位
dbo.dt_article 表
add_time 欄位