bruehlicke <[email protected]> writes: > I have a trigger something like > > ..... UPDATE X SET A=(SELECT ..... ) > > > Now, if the embedded SELECT statement returns no rows I would NOT like > to change the value from A to "bank/null" but let it keep the value it > currently has. > > Any suggestions for a one liner which fits into a create trigger statement
I think this should do the trick: UPDATE X SET A=COALESCE((SELECT ......), A) -- Knut Anders
