Hello Not sure I get it right, but all three fields are not nullable. So they will always have a value, which is what I understand of "are specified". What do you need the trigger for in that case?
Bye Charles > -----Original Message----- > From: pgsql-general-ow...@postgresql.org > [mailto:pgsql-general-ow...@postgresql.org] On Behalf Of Leif Jensen > Sent: Freitag, 18. September 2015 10:23 > To: pgsql-general <pgsql-general@postgresql.org> > Subject: [GENERAL] Delete trigger > > Hi, > > I am running PostgreSQL 9.3.4. I have a simple table with 3 fields: > > CREATE TABLE devicegroup ( > groupid integer NOT NULL, > ctrlid integer NOT NULL, > userid integer NOT NULL > ); > ALTER TABLE ONLY devicegroup > ADD CONSTRAINT pk_devicegroup PRIMARY KEY (groupid, ctrlid, userid); > > I want to make sure that records are only deleted when all 3 fields are > specified, so I tried make a trigger: > > CREATE TRIGGER userDev_trig INSTEAD OF DELETE ON admdevgrid FOR EACH STATEMENT > EXECUTE PROCEDURE deleteUserDev(); > > which could check for NOT NULL on the 3 fields before actual doing the > delete. Unfortunately this is not possible to > do FOR EACH STATEMENT, and FOR EACH ROW would not give me the chance to check > for NOT NULL. > > Any ideas ? > > Leif > > > -- > Sent via pgsql-general mailing list (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
