Leif Jensen wrote:
> If I do "DELETE FROM devicegroup WHERE group=1" I do not want to delete
> anything. I only want to
> delete if I do "DELETE FROM devicegroup WHERE groupid=x AND ctrlid=y AND
> userid=z". I don't wanna let
> anyone delete more than 1 row at a time.
I can't think of a way to do that with a trigger.
I'd write a
FUNCTION delete_devicegroup(groupid integer, ctrlid integer, userid integer)
RETURNS void CALLED ON NULL INPUT VOLATILE SECURITY DEFINER
that enables the user to delete a row and checks that all arguments
are NOT NULL. The user doesn't get privileges to DELETE from the table
directly.
Yours,
Laurenz Albe
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