Re: Access aggregation functions in plan stage of fdw? - Mailing list pgsql-interfaces

Ian Pye <ianpye@gmail.com> writes:
> I'm trying to write a fdw where aggregate functions are pushed down to the
> underlaying data store.

> Is this possible?

Not yet.  You can find various speculation about doing this in the
pgsql-hackers archives from the last month or so.  It's going to require
some significant planner-infrastructure work, IMO, but we might have it
for 9.5.
        regards, tom lane