INSERT deleted values into a table before DELETE with a DELETE TRIGGER

Question

For some reason I can\'t find the exact answer that I need. I searched for at last 20 minutes in here.

I know it\'s simple. VERY simple. But I can\'t fire the trigge

Answer 1

Your problem is: this trigger fires AFTER the delete has already happened. So there is no more row in HashTags which you could join on!

You need to use this trigger instead:

ALTER TRIGGER [dbo].[HashTags_BeforeDelete]
    ON [dbo].[HashTags]
    FOR DELETE
AS
  BEGIN
    INSERT INTO HashTagsArchive(Id, HashTagId, delete_date)
       SELECT 
           d.Id, d.HashTagId, GETUTCDATE() 
       FROM deleted d 
  END
GO

The Deleted pseudo table contains the whole row(s) that were deleted - no need to join on anything...

Also: this trigger fires after the delete has happened - so you don't need to do anything yourself, inside the trigger - just insert those bits of information into your archive table - that's all. Everything else is handled by SQL Server for you.