On Tuesday 12 February 2008 03:25, Bryce Nesbitt wrote:
> Yes, the view approach has some advantages. But it still leaves the
> underlying tables naked to modification. And since the most likely
> error is... well... me (or another admin) at the SQL prompt, we want
> underlying tables protected also.
Couldn't you make a row trigger BEFORE UPDATE?
CREATE OR REPLACE FUNCTION readonly_handler() RETURNS "trigger" AS
$BODY$BEGIN IF OLD.read_only = TRUE THEN RETURN OLD; ELSE RETURN NEW; END IF;END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE;
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