Am 2011-11-07 16:06, schrieb Richard Broersma: > On Thu, Nov 3, 2011 at 11:56 PM, Michael Musenbrock <redeamer@xxxxxxx> 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 Ah, thank you very much, I was already reading about the constraint trigger, but I was intentionally looking for a trigger firing on violating of an already existing constraint. So am I got that right, that If I want to have eg custom error messages for a foreign key violation, I need to replace all fkeys by trigger functions?! Thanks in advance, Regards, Michael -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general