Re: Index-only scans for multicolumn GIST

From: Emre Hasegeli <emre(at)hasegeli(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Anastasia Lubennikova <lubennikovaav(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Index-only scans for multicolumn GIST
Date: 2014-07-23 17:28:02
Message-ID: 20140723172802.GA76818@hasegeli-2.local
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> That seems like a nonstarter :-(. Index-only scans don't have a license
> to return approximations. If we drop the behavior for circles, how much
> functionality do we have left?

It should work with exact operator classes, box_ops, point_ops,
range_ops, inet_ops.

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