On 21st of October, Robert Haas committed patch: postgres_fdw: Push down aggregates to remote servers. Now that the upper planner uses paths, and now that we have proper hooks to inject paths into the upper planning process, it's possible for foreign data wrappers to ...

On 18th of March, Robert Haas committed patch: Directly modify foreign tables. postgres_fdw can now sent an UPDATE or DELETE statement directly to the foreign server in simple cases, rather than sending a SELECT FOR UPDATE statement and then updating or deleting rows one-by-one. Etsuro ...