Question

I want to create a trigger that will update the column LastActivityDate to the current date when the Description column is updated, the problem is that all the rows are being updated, and I don’t know how to make the where clause inside the trigger…

I need to make a trigger like this for other tables as well, like the Votes table…

I have:

CREATE TRIGGER test ON Articles FOR INSERT, UPDATE   AS IF UPDATE(Description) UPDATE Articles SET LastActivityDate = GETUTCDATE() 

How would the where clause be?

Answer 1

You can join to the inserted table to limit the update to the rows updated .

  CREATE TRIGGER test ON Articles     FOR INSERT, UPDATE       AS     IF UPDATE(Description)     UPDATE a     SET a.LastActivityDate = GETUTCDATE()     from Articles a     inner join inserted i     on a.SomeIDField = i.SomeIDField