On Fri, Aug 17, 2012 at 2:58 PM, Alvaro Herrera <alvhe...@2ndquadrant.com> wrote: > I mean, what are NOT NULL in foreign tables for? Are they harmed or > helped by having pg_constraint rows?
As I've mentioned when this has come up before, I think that constraints on foreign tables should be viewed as declarative statements about the contents of the foreign data that the DB will assume true. This could be useful for a variety of purposes: constraint exclusion, query optimization, etc. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
