SELECT 当月天数=day(dateadd(month,1,getdate()-day(getdate())+1)-1)
SELECT
当月天数=datediff(day,getdate(),dateadd(month,1,getdate()))
SELECT
当月天数=datediff(day,getdate(),dateadd(month,1,getdate()))
SELECT
DATEADD(dd, DATEDIFF(dd,0,getdate()),0) as 当天的半夜
SELECT DATEADD(qq,
DATEDIFF(qq,0,getdate()),0) as 季度的第一天
SELECT DATEADD(yy,
DATEDIFF(yy,0,getdate()),0) as 一年的第一天
SELECT DATEADD(wk,
DATEDIFF(wk,0,getdate()),0) as 本周的星期一
SELECT DATEADD(mm,
DATEDIFF(mm,0,getdate()),0) as 一个月的第一天
SELECT
dateadd(ms,-3,DATEADD(mm, DATEDIFF(mm,0,getdate()),0)) as 上个月的最后一天
SELECT dateadd(ms,-3,DATEADD(yy, DATEDIFF(yy,0,getdate()),0)) as
去年的最后一天
SELECT dateadd(ms,-3,DATEADD(mm, DATEDIFF(m,0,getdate())+1,0))
as 本月的最后一天
SELECT dateadd(ms,-3,DATEADD(yy,
DATEDIFF(yy,0,getdate())+1,0))as 本年的最后一天
SELECT
DATEADD(wk,DATEDIFF(wk,0,dateadd(dd,6-datepart(day,getdate()),getdate())),0) as
本月的第一个星期一