Difference of two date time in sql server

Question

Is there any way to take the difference between two datetime in sql server?

For example, my dates are

1. 2010-01-22 15:29:55.090

Answer 1

SELECT DATEDIFF(yyyy, '2011/08/25', '2017/08/25') AS DateDiff

It's gives you difference between two dates in Year

Here (2017-2011)=6 as a result

Syntax:

DATEDIFF(interval, date1, date2)