SELECT @Date AS '目前时间' ,DATEADD(DD,-1,@Date) AS '前一天' ,DATEADD(DD,1,@Date) AS '后一天' /*月计算*/ ,DATEADD(MONTH,DATEDIFF(MONTH,0,@Date),0) AS '月初'--在SQL Server中0 代表1900-01-01,通过月运算,保证日恒久为1号 ,DATEADD(DD,-1,DATEADD(MONTH,1+DATEDIFF(MONTH,0,@Date),0)) AS '月末(精确到天)'--找到下月初再扣减1天,建议使用DATEADD而不要直接“-1” ,DATEADD(SS,-1,DATEADD(MONTH,1+DATEDIFF(MONTH,0,@Date),0)) AS '月末(精确到datetime的小数位)' ,DATEADD(MONTH,DATEDIFF(MONTH,0,@Date)-1,0) AS '上月第一天' ,DATEADD(DAY,-1,DATEADD(DAY,1-DATEPART(DAY,@Date),@Date)) AS '上月最后一天' ,DATEADD(MONTH,DATEDIFF(MONTH,0,@Date)+1,0) AS '下月第一天' ,DATEADD(DAY,-1,DATEADD(MONTH,2,DATEADD(DAY,1-DATEPART(DAY,@Date),@Date))) AS '下月最后一天' /*周计算*/ ,DATEADD(WEEKDAY,1-DATEPART(WEEKDAY,@Date),@Date) AS '本周第一天(周日)'--注意此处与@@datefirst的值有关 ,DATEADD(WEEK,DATEDIFF(WEEK,-1,@Date),-1) AS '所在星期的星期日'--注意此处与@@datefirst的值有关 ,DATEADD(DAY,2-DATEPART(WEEKDAY,@Date),@Date) AS '所在星期的第二天'--注意此处与@@datefirst的值有关,其他天数类推 ,DATEADD(WEEK,-1,DATEADD(DAY,1-DATEPART(WEEKDAY,@Date),@Date)) AS '上个星期第一天(周日)'--注意此处与@@datefirst的值有关 ,DATEADD(WEEK,1,DATEADD(DAY,1-DATEPART(WEEKDAY,@Date),@Date)) AS '下个星期第一天(星期日)'--注意此处与@@datefirst的值有关 ,DATENAME(WEEKDAY,@Date) AS '本日是周几' ,DATEPART(WEEKDAY,@Date) AS '本日是周几'--返回值 1-星期日,2-星期一,3-星期二......7-星期六 /*年度计算*/ ,DATEADD(YEAR,DATEDIFF(YEAR,0,@Date),0) AS '年初' ,DATEADD(YEAR,DATEDIFF(YEAR,-1,@Date),-1) AS '年末' ,DATEADD(YEAR,DATEDIFF(YEAR,-0,@Date)-1,0) AS '去年年初' ,DATEADD(YEAR,DATEDIFF(YEAR,-0,@Date),-1) AS '去年年末' ,DATEADD(YEAR,1+DATEDIFF(YEAR,0,@Date),0) AS '明年年初' ,DATEADD(YEAR,1+DATEDIFF(YEAR,-1,@Date),-1) AS '明年年末' /*季度计算*/ ,DATEADD(QUARTER,DATEDIFF(QUARTER,0,@Date),0) AS '本季季初' ,DATEADD(QUARTER,1+DATEDIFF(QUARTER,0,@Date),-1) AS '本季季末' ,DATEADD(QUARTER,DATEDIFF(QUARTER,0,@Date)-1,0) AS '上季季初' ,DATEADD(QUARTER,DATEDIFF(QUARTER,0,@Date),-1) AS '上季季末' ,DATEADD(QUARTER,1+DATEDIFF(QUARTER,0,@Date),0) AS '下季季初' ,DATEADD(QUARTER,2+DATEDIFF(QUARTER,0,@Date),-1) AS '下季季末'
DECLARE @Date DATETIME = GETDATE();
SELECT @Date AS '目前时间'
,DATEADD(DD,-1,@Date) AS '前一天'
,DATEADD(DD,1,@Date) AS '后一天'
/*月计算*/
,DATEADD(MONTH,DATEDIFF(MONTH,0,@Date),0) AS '月初'--在SQL Server中0 代表1900-01-01,通过月运算,保证日恒久为1号
,DATEADD(DD,-1,DATEADD(MONTH,1+DATEDIFF(MONTH,0,@Date),0)) AS '月末(精确到天)'--找到下月初再扣减1天,建议使用DATEADD而不要直接“-1”
,DATEADD(SS,-1,DATEADD(MONTH,1+DATEDIFF(MONTH,0,@Date),0)) AS '月末(精确到datetime的小数位)'
,DATEADD(MONTH,DATEDIFF(MONTH,0,@Date)-1,0) AS '上月第一天'
,DATEADD(DAY,-1,DATEADD(DAY,1-DATEPART(DAY,@Date),@Date)) AS '上月最后一天'
,DATEADD(MONTH,DATEDIFF(MONTH,0,@Date)+1,0) AS '下月第一天'
,DATEADD(DAY,-1,DATEADD(MONTH,2,DATEADD(DAY,1-DATEPART(DAY,@Date),@Date))) AS '下月最后一天'
/*周计算*/
,DATEADD(WEEKDAY,1-DATEPART(WEEKDAY,@Date),@Date) AS '本周第一天(周日)'--注意此处与@@datefirst的值有关
,DATEADD(WEEK,DATEDIFF(WEEK,-1,@Date),-1) AS '所在星期的星期日'--注意此处与@@datefirst的值有关
,DATEADD(DAY,2-DATEPART(WEEKDAY,@Date),@Date) AS '所在星期的第二天'--注意此处与@@datefirst的值有关,其他天数类推
,DATEADD(WEEK,-1,DATEADD(DAY,1-DATEPART(WEEKDAY,@Date),@Date)) AS '上个星期第一天(周日)'--注意此处与@@datefirst的值有关
,DATEADD(WEEK,1,DATEADD(DAY,1-DATEPART(WEEKDAY,@Date),@Date)) AS '下个星期第一天(星期日)'--注意此处与@@datefirst的值有关
,DATENAME(WEEKDAY,@Date) AS '本日是周几'
,DATEPART(WEEKDAY,@Date) AS '本日是周几'--返回值 1-星期日,2-星期一,3-星期二......7-星期六
/*年度计算*/
,DATEADD(YEAR,DATEDIFF(YEAR,0,@Date),0) AS '年初'
,DATEADD(YEAR,DATEDIFF(YEAR,-1,@Date),-1) AS '年末'
,DATEADD(YEAR,DATEDIFF(YEAR,-0,@Date)-1,0) AS '去年年初'
,DATEADD(YEAR,DATEDIFF(YEAR,-0,@Date),-1) AS '去年年末'
,DATEADD(YEAR,1+DATEDIFF(YEAR,0,@Date),0) AS '明年年初'
,DATEADD(YEAR,1+DATEDIFF(YEAR,-1,@Date),-1) AS '明年年末'
/*季度计算*/
,DATEADD(QUARTER,DATEDIFF(QUARTER,0,@Date),0) AS '本季季初'
,DATEADD(QUARTER,1+DATEDIFF(QUARTER,0,@Date),-1) AS '本季季末'
,DATEADD(QUARTER,DATEDIFF(QUARTER,0,@Date)-1,0) AS '上季季初'
,DATEADD(QUARTER,DATEDIFF(QUARTER,0,@Date),-1) AS '上季季末'
,DATEADD(QUARTER,1+DATEDIFF(QUARTER,0,@Date),0) AS '下季季初'
,DATEADD(QUARTER,2+DATEDIFF(QUARTER,0,@Date),-1) AS '下季季末'
--下个月第一天
select dateadd(mm,1,DATEADD(dd,-day(getdate())+1,getdate()))
--下个月最后一天
select dateadd(dd,-1,dateadd(mm,2,DATEADD(dd,-day(getdate())+1,getdate())))
--下下个月第一天
select dateadd(mm,2,DATEADD(dd,-day(getdate())+1,getdate()))
--下下个月最后一天
select dateadd(dd,-1,dateadd(mm,3,DATEADD(dd,-day(getdate())+1,getdate())))/*-----------------------
2013-01-01 14:02:17.420(1 行受影响)
-----------------------
2013-01-31 14:02:17.420(1 行受影响)
-----------------------
2013-02-01 14:02:17.420(1 行受影响)
-----------------------
2013-02-28 14:02:17.420(1 行受影响)
*/
set @dt=getdate()
select convert(varchar(7),dateadd(m,1,@dt),120)+'-01',convert(varchar(10),dateadd(d,-1,convert(varchar(7),dateadd(m,2,@dt),120)+'-01'),120)
select convert(varchar(7),dateadd(m,2,@dt),120)+'-01',convert(varchar(10),dateadd(d,-1,convert(varchar(7),dateadd(m,3,@dt),120)+'-01'),120)
/*
---------- ----------
2013-01-01 2013-01-31(1 行受影响)
---------- ----------
2013-02-01 2013-02-28(1 行受影响)
*/
楼上几位太强大了 谢谢
select GETDATE()--得到获取当前时间下个月的第一天时间和最后一天时间
Select DATEADD(MM, DATEDIFF(mm,0,DATEADD(mm,1,getdate())), 0)
Select DATEADD(SECOND,-1,DATEADD(MM, DATEDIFF(mm,0,DATEADD(mm,2,getdate())), 0))--获取当前时间下下个月的第一天时间和最后一天时间
Select DATEADD(MM, DATEDIFF(mm,0,DATEADD(mm,2,getdate())), 0)
Select DATEADD(SECOND,-1,DATEADD(MM, DATEDIFF(mm,0,DATEADD(mm,3,getdate())), 0))
--结果
--当前时间
--2012-12-04 19:30:45.610--得到获取当前时间下个月的第一天时间和最后一天时间
--2013-01-01 00:00:00.000
--2013-01-31 23:59:59.000--获取当前时间下下个月的第一天时间和最后一天时间
--2013-02-01 00:00:00.000
--2013-02-28 23:59:59.000