2015-05-15 8:43 GMT+09:00 Kouhei Kaigai <kai...@ak.jp.nec.com>: > Regarding of FDW, as Hanada-san mentioned, I'm uncertain whether > similar feature is also needed because its join-pushdown feature > scan on the result-set of remotely joined relations, thus no need > to have local child Path nodes. > So, I put this custom_children list on CustomXXXX structure only.
AFAIS most of FDWs won't need child paths to process their external data. The most possible idea is that a FDW uses output of ForeignScan plan node which is handled by the FDW, but such work should be done by another CSP (or at least via CSP I/F). -- Shigeru HANADA -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
