On Wed, Mar 25, 2015 at 3:14 PM, Shigeru HANADA <shigeru.han...@gmail.com> wrote:
> > Or bottom of make_join_rel(). IMO build_join_rel() is responsible for > just building (or searching from a list) a RelOptInfo for given relids. > After that make_join_rel() calls add_paths_to_joinrel() with appropriate > arguments per join type to generate actual Paths implements the join. > make_join_rel() is called only once for particular relid combination, and > there SpecialJoinInfo and restrictlist (conditions specified in JOIN-ON and > WHERE), so it seems promising for FDW cases. > I like that idea, but I think we will have complex hook signature, it won't remain as simple as hook (root, joinrel). -- Best Wishes, Ashutosh Bapat EnterpriseDB Corporation The Postgres Database Company
