On Thu, Nov 3, 2011 at 11:56 PM, Michael Musenbrock <redea...@gmx.net> wrote:
> But I have not > found any information if this is possible to create a trigger on a > constraint violation, and if yes, how could that be done? You want to use the special type of "CONSTRAINT" trigger. http://www.postgresql.org/docs/9.1/interactive/sql-createtrigger.html Notice that constraint triggers require the developer of the trigger to RAISE EXCEPTION when the constraint is violated. http://www.postgresql.org/docs/9.1/interactive/plpgsql-errors-and-messages.html The syntax for RAISE EXCEPTION allow the developer to specify any desired message. -- Regards, Richard Broersma Jr. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
