Question

I’m trying to figure out a way to take a date in a table in SQL, check if it’s older than the value in another column and possibly output the difference.

For Example:

ColA has a standard SQL date stamp of 2011-12-12 04:10:00.000
ColB has a number in it such as 10
I’d like to be able to compare todays date to the date in (ColA + the value in ColB)

ColB’s values are in days so adding the 10 above would mean ColA’s date + 10 would be:
2011-12-22 04:10:00.000.

I’m trying to figure out how to compare todays date with this date to see if how many days from today it is. In this case (12-22-2011) it would be 45 days ago.

Hopefully this explanation isn’t too confusing.

Answer 1

Use DATEDIFF and DATEADD to manipulate and compare SQL Server dates/datetimes.

e.g

DATEADD(day, 10, ColA)

and

IF DATEDIFF(day, DATEADD(day, 10, ColA), GETDATE()) > SomeNumberofDays