How to get number of days in between two dates

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SQL-Server-2008R2

Dear,

C#

How to get number of days in between two dates

I tried below query in SQL.

SQL

select DATEDIFF(DAY,'2016-03-11  12:00','2016-03-13  20:00')

its right but i want in decimal format.

Thanks
Basit

What I have tried:

select DATEDIFF(DAY,'2016-03-11 12:00','2016-03-13 20:00')

Posted 14-Mar-16 1:06am

basitsar

Updated 14-Mar-16 1:15am

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OriginalGriff · Answer 1 · 2016-03-14T01:15:00

There is no SQL function for returning the difference in terms of days.hours or days.minutes - just for whole days, whole hours, and whole minutes.
If you want that, then you're going to have to create it yourself, and probably get the days, convert to hours, subtract that from the total hours, then take the days again, convert that to a float, convert the hours left to a float and divide it by an appropriate value (100 or 24, depending) before adding it on.
Nasty. If I needed it, I'd create an SQL function to do it, but I'd try and find a better way to handle my data first.