How do you test if something is older than 3 months?

Question

I have been having some trouble to select the rows of my table which has a date of 3 months prior of today. I tried using DATE(NOW() - INTERVAL 3 MONTH) in my where

Answer 1

Your syntax appears to be wrong.

That should be

UPDATE[TCTdb].[dbo].[Stock]
    SET[Warehouse] = 'old'
WHERE [ManufacturedDate] <= DATEADD(mm, -3, GETDATE())