On Wed, Jul 22, 2015 at 8:24 PM, Kouhei Kaigai <kai...@ak.jp.nec.com> wrote: > Indeed, this commit allows ForeignScan to have fdw_scan_tlist, even if > scanrelid > 0, however, I'm uncertain about its reason/intention. > Does it a preparation for the upcoming target-list-pushdown??
I guess Tom would have to comment on whether it could be used for that purpose. I assume that omitting columns could be interesting for some FDWs, if nothing else. -- 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
