DateDiff在7天内

Question

我做错了什么？我正在寻找任何记录，其中snf.StartDate是在inp.enddate之后7天或更短的时间。

和DATEDIFF（day，inp.Discharge_Date，snf。[StartDate]）＆lt; = 7

Answer 1

你可以试试这个：

and ABS( DATEDIFF(day, inp.Discharge_Date, snf.[StartDate]) ) <= 7

Answer 2

这样做......

SELECT DATEDIFF(day,StartDate, EndDate) As DateDiff
FROM dbo.DoesntMatter
Where DATEDIFF(day,StartDate, EndDate) between -7 and 0

Answer 3

SELECT Column1,Column2
FROM Table_ABC
Where DATEDIFF(day,add_on, getdate()) > 7  order by add_on asc