Re: fetch updated columns in 'before update' trigger
"Access the updated columns in a 'before update' trigger" contradicts itself---the result of an update can't be accessed before the update has occurred. So I can't make sense of the question.
Nor do I understand "...updating the trigger..."---Triggers aren't updateable.
Nor do I understand "...add more columns"---are you building an Update statement, or what?
So, please clarify.
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