On 9/15/15 10:02 PM, Kouhei Kaigai wrote: >> The 9.5 release notes contain this promising but cryptic item: >> >> - Allow foreign data wrappers and custom scans to implement join >> pushdown (KaiGai Kohei) >> >> As phrased, this seems to mean, "it can be done, but we haven't done >> it". But there is no link to any documentation that explains how to do >> this. The commit that appears to have added this feature touches >> postgres_fdw, but neither the documentation nor the tests show anything >> about this feature, and I haven't been able to reproduce anything that >> would seem to indicate anything like this is at work. >> >> So what is the actual extent of this feature? >> > It says these enhancement on interface allows extensions to implement > join operation in their own way (including remote join in case of FDW), > however, enhancement of postgres_fdw is not yet upstreamed.
Thank you for this clarification. I suppose this item is correct as written. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
