SQL取得一些特别日期

select * from jy_jjgl a ,jy_jygl b where convert(varchar( 10 ),a.shtime, 120 ) = ' 2007-11-27 '


1 .显示本月第一天



SELECT DATEADD(mm,DATEDIFF(mm, 0 ,getdate()), 0 )
select convert(datetime,convert(varchar( 8 ),getdate(),
120 ) + ' 01 ' , 120 )




2 .显示本月最后一天



select dateadd(day, - 1 ,convert(datetime,convert
(varchar( 8 ),dateadd(month, 1 ,getdate()), 120 ) + ' 01 ' , 120 ))
SELECT dateadd(ms, - 3 ,DATEADD(mm,DATEDIFF(m, 0 ,getdate()) + 1 , 0 ))


3 .上个月的最后一天



SELECT dateadd(ms, - 3 ,DATEADD(mm,DATEDIFF(mm, 0 ,getdate()), 0 ))




4 .本月的第一个星期一i



select DATEADD(wk,DATEDIFF(wk, 0 , dateadd(dd, 6 - datepart(
day,getdate()),getdate())), 0 )


5 .本年的第一天



SELECT DATEADD(yy,DATEDIFF(yy, 0 ,getdate()), 0 )




6 .本年的最后一天



SELECT dateadd(ms, - 3 ,DATEADD(yy,DATEDIFF(yy, 0 ,getdate()) + 1 , 0 ))




7 .去年的最后一天



SELECT dateadd(ms, - 3 ,DATEADD(yy,DATEDIFF(yy, 0 ,getdate()), 0 ))


8 .本季度的第一天



SELECT DATEADD(qq,DATEDIFF(qq, 0 ,getdate()), 0 )


9 .本周的星期一



SELECT DATEADD(wk,DATEDIFF(wk, 0 ,getdate()), 0 )


10 .查询本月的记录



select * from tableName where DATEPART(mm, theDate)
= DATEPART(mm, GETDATE()) and DATEPART(yy, theDate)
= DATEPART(yy, GETDATE())




11 .查询本周的记录



select * from tableName where DATEPART(wk, theDate) = DATEPART (wk, GETDATE()) and DATEPART(yy, theDate) = DATEPART(yy, GETDATE())




12查询本季的记录 注：其中:GETDATE()是获得系统时间的函数。



select * from tableName where DATEPART(qq, theDate) = DATEPART
(qq, GETDATE()) and DATEPART(yy, theDate) = DATEPART(yy, GETDATE())




13 .获取当月总天数:



select DATEDIFF(dd,getdate(),DATEADD
(mm, 1 , getdate()))



select datediff(day,
dateadd(mm, datediff(mm, '' ,getdate()), '' ),
dateadd(mm, datediff(mm, '' ,getdate()), ' 1900-02-01 ' ))




14 .获取当前为星期几



DATENAME(weekday, getdate())