Trigger to fire only if a condition is met in SQL Server

Question

I hope this is a simple enough question for any SQL people out there...

We have a table which hold system configuration data, and this is tied to a history table via

Answer 1

For triggers in general, you need to use a cursor to handle inserts or updates of multiple rows. For example:

DECLARE @Attribute;
DECLARE @ParameterValue;
DECLARE mycursor CURSOR FOR SELECT Attribute, ParameterValue FROM inserted;
OPEN mycursor;
FETCH NEXT FROM mycursor into @Attribute, @ParameterValue;
WHILE @@FETCH_STATUS = 0
BEGIN

If @Attribute LIKE 'NoHist_%'
      Begin
          Return
      End

etc.

FETCH NEXT FROM mycursor into @Attribute, @ParameterValue;
END

Triggers, at least in SQL Server, are a big pain and I avoid using them at all.