Tom Lane írta: > Boszormenyi Zoltan <z...@cybertec.at> writes: > >> This applies to anything else that may need to be converted >> from list to tree to decrease planning time. Like ec_members >> in EquivalenceClass. >> > > AFAIR, canonical pathkeys are the *only* thing in the planner where pure > pointer equality is interesting. So I doubt this hack is of any use for > EquivalenceClass, even if the lists were likely to be long which they > aren't. > > regards, tom lane >
No, for EquivalanceClass->ec_member, I need to do something funnier, like implement compare(Node *, Node *) and use that instead of equal(Node *, Node *)... Something like nodeToString() on both Node * and strcmp() the resulting strings. -- ---------------------------------- Zoltán Böszörményi Cybertec Schönig & Schönig GmbH Gröhrmühlgasse 26 A-2700 Wiener Neustadt, Austria Web: http://www.postgresql-support.de http://www.postgresql.at/ -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
