SQL SERVER:获取两个日期之间的总天数

Question

我想要获得两天之间的总天数:

1/1/2011
3/1/2011

RETURN
62

是否可以在SQL Server中执行？

Answer 1

PRINT DATEDIFF(DAY, '1/1/2011', '3/1/2011') 会给你你想要的东西.

这给出了两个日期之间跨越午夜边界的次数.如果您在计数中包含两个日期,您可能决定需要添加一个 - 或者如果您不想包含任何一个日期,则减去一个日期.

Answer 2

SQL Server DateDiff

DECLARE @startdate datetime2 = '2007-05-05 12:10:09.3312722';
DECLARE @enddate datetime2 = '2009-05-04 12:10:09.3312722'; 
SELECT DATEDIFF(day, @startdate, @enddate);

Answer 3

您可以尝试此MSDN链接

DATEDIFF ( datepart , startdate , enddate )
SELECT DATEDIFF(DAY, '1/1/2011', '3/1/2011')

Answer 4

见DateDiff:

DECLARE @startdate date = '2011/1/1'
DECLARE @enddate date = '2011/3/1'
SELECT DATEDIFF(day, @startdate, @enddate)

Answer 5

另一种日期格式

select datediff(day,'20110101','20110301')

Answer 6

SELECT DATEDIFF(day, '2005-12-31 23:59:59.9999999', '2006-01-01 00:00:00.0000000');