On Wed, Feb 26, 2014 at 10:23 AM, Stephen Frost <sfr...@snowman.net> wrote: > * Kouhei Kaigai (kai...@ak.jp.nec.com) wrote: >> IIUC, his approach was integration of join-pushdown within FDW APIs, >> however, it does not mean the idea of remote-join is rejected. > > For my part, trying to consider doing remote joins *without* going > through FDWs is just nonsensical.
That is, of course, true by definition, but I think it's putting the focus in the wrong place. It's possible that there are other cases when a scan might a plausible path for a joinrel even if there are no foreign tables in play. For example, you could cache the joinrel output and then inject a cache scan as a path for the joinrel. -- 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
