Question

I have a SQL statement that determines the number of days between two dates. If the difference is negative, the statement needs to select 0. This statement works but I was wondering if it is possible to assign the value of datediff("D",GETDATE(),dbo.tblKBX_Reward.validdate) to a @ variable so I don’t have to call it twice.

SELECT CASE 
WHEN datediff("D",GETDATE(),dbo.tblKBX_Reward.validdate) < 0  THEN 0
ELSE datediff("D",GETDATE(),dbo.tblKBX_Reward.validdate)
END from ...

Please don’t ask why I am calculating this value using SQL instead of in code.

Thanks

Answer 1

You could move the case statement inside the calculation, like this:

Select DateDiff("D", GetDate(), Case When YourColumn > GetDate() 
                                     Then YourColumn 
                                     Else GetDate() 
                                     End)