Home/ Questions/Q 6635453
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-25T23:03:22+00:00

I couldn’t understand the difference between SELECT DATEDIFF(D,’07/09/1978′,GETDATE()) SELECT DATEDIFF(DD,’07/09/1978′,GETDATE()) Both are giving the

  • 0

I couldn’t understand the difference between

SELECT DATEDIFF(D,'07/09/1978',GETDATE())

SELECT DATEDIFF(DD,'07/09/1978',GETDATE())

Both are giving the same value. Then what is the difference between D, and DD?

I have the same question for

  • M, MM
  • Q, QQ
  • YY, YYYY

Can anybody please explain this to me?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Here is a reference on dateparts and what they mean:

    As you can see, the examples you gave are all identical. However, I know some experts like Aaron Bertrand advocate not using any of the abbreviations, but spelling out the datepart.

    See his excellent post on this subject here:

    • 0