[英]SQL need to subtract certain time from date parameter passed into query
I have a date parameter so the date and time can always change. 我有一个date参数,因此日期和时间可以随时更改。
For this example the datetime is '2010-07-06 14:46:37.577' 对于此示例,日期时间为“ 2010-07-06 14:46:37.577”
I need to see how much time is between this date paramter and the time of '17:00:00.000' 我需要查看该日期参数与“ 17:00:00.000”时间之间有多少时间
The time of 5PM will never change but as I said the date paramter can change. 5PM的时间永远不会改变,但是正如我所说的,日期参数可以改变。
declare @MyDate datetime
set @MyDate = '2010-07-06 14:46:37.577'
select DATEDIFF(MINUTE, @MyDate, CONVERT(varchar(10), @Mydate, 101)+' 17:00:00')
DECLARE @DateParameter datetime
DECLARE @DateTime5PM datetime
SET @DateParameter = '2010-07-06 14:46:37.577'
SET @DateTime5PM = CAST(CONVERT(varchar, @DateParameter, 101) + ' 17:00' AS datetime)
SELECT DATEDIFF (MI, @DateParameter, @DateTime5PM)
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