Suppose I have a row in a table where the lastname field is 'Jones'.
Now suppose I do an UPDATE on that row, and set the lastname to 'Jones'
Is there anything I can check in the update trigger that will tell me whether one of the columns that I updated was the lastname column, even though the value itself didn't change?
(It may sound like a silly question, but the answer is important to an authentication method that we're considering).
