On ons, 2011-07-20 at 13:53 -0400, Alvaro Herrera wrote: > I checked the check_constraints definition in the standard and it's > not clear to me that NOT NULL constraints are supposed to be there at > all. Are NOT NULL constraints considered to be CHECK constraints too?
Yes, NOT NULL is considered just a notational shorthand for CHECK (x IS NULL). -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
