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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Ian Pye <ianpye@gmail.com>
cc: pgsql-interfaces@postgresql.org
Subject: Re: Access aggregation functions in plan stage of fdw?
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Comments: In-reply-to Ian Pye <ianpye@gmail.com>
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Date: Wed, 11 Dec 2013 21:50:41 -0500
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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


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