to prevent possible escalation of privilege. Provide new SECURITY DEFINER functions with old behavior, but initially REVOKE ALL from public for these functions. Per list discussion and design proposed by Tom Lane.
than the local query specifies (e.g. in the FROM clause), throw an ERROR (instead of crashing). Fix for bug #2129 reported by Akio Iwaasa.
connections to dblink. Shridhar Daithanka