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Date: Thu, 28 Nov 2019 11:03:33 -0300
From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Yugo Nagata <nagata@sraoss.co.jp>
Cc: Tatsuo Ishii <ishii@sraoss.co.jp>, pgsql-hackers@postgresql.org,
	hoshiai@sraoss.co.jp, thomas.munro@gmail.com, kgrittn@gmail.com
Subject: Re: Implementing Incremental View Maintenance
Message-ID: <20191128140333.GA25947@alvherre.pgsql>
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Precedence: bulk

One thing pending in this development line is how to catalogue aggregate
functions that can be used in incrementally-maintainable views.
I saw a brief mention somewhere that the devels knew it needed to be
done, but I don't see in the thread that they got around to doing it.
Did you guys have any thoughts on how it can be represented in catalogs?
It seems sine-qua-non ...

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services