Question

我有这样的陈述

SELECT @startdate = DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -7) -- Monday of previous week
SELECT @enddate = DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -1) -- Sunday of previous week

我希望将@startdate和@enddate转换为以下格式的数字'yyyymmdd'

Answer 1

SELECT CONVERT(nvarchar(8), @StartDate, 112)

将2014-03-31转换为20140331

Answer 2

最简单的方法是使用year()，month()和day()：

select @startdate = year(getdate())*10000 + month(getdate()) * 100 + day(getdate())

Answer 3

这对你有用：

SELECT CAST(DATEPART(yyyy,@startdate) AS VARCHAR(4)) +
   RIGHT('0' + CAST(DATEPART(mm,@startdate) AS VARCHAR(2)),2) +
   RIGHT('0' + CAST(DATEPART(dd,@startdate) AS VARCHAR(2)),2)

但这更好：

SELECT CONVERT(nvarchar(8), @StartDate, 112)

Answer 4

使用CONVERT

declare @enddate smalldatetime
SELECT @enddate = DATEADD(wk, DATEDIFF(wk,0,GETDATE()), -1) 
select convert(varchar(30), @enddate, 112)

如何将日期变量转换为数字是sql？

4 个答案: