DateDiff to find duration in minutes not working

Question

I am using DATEDIFF(MI,STARTDATE,ENDDATE)

I tried using MINUTE and N , but none of them are producing the expected result. Whenever the difference is 50 seconds, it is showing 1 minute.

I am using SQL Server 2008, and all the date times are in UTC format.

My Start Date is a database record and End Date is GETUTCDATE() .

Answer 1

DATEDIFF returns the count (signed integer) of the specified datepart boundaries crossed between the specified startdate and enddate. For example, this query will return 1 as a minute boundary has been crossed between the two times:

SELECT DATEDIFF(mi,'5 May 2015 11:59:00','5 May 2015 12:00:01') 

You could use this statement instead:

SELECT DATEDIFF(s,DATEADD(s,-50,GETUTCDATE()),GETUTCDATE()) / 60