Re: Wanted: jsonb on-disk representation documentation

From: Peter Geoghegan <pg(at)heroku(dot)com>
To: Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Andres Freund <andres(at)anarazel(dot)de>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Wanted: jsonb on-disk representation documentation
Date: 2014-05-06 20:18:11
Message-ID: CAM3SWZTcNTkQqiqgRHOFO=KUZMXqjR4HPggLVoGAxGOkgGdtnQ@mail.gmail.com
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On Tue, May 6, 2014 at 1:06 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> I also would like to know what the index-everything hash ops does? Does
> it index the keys, values, or both?

It indexes both, but it isn't possible to test existence (of a key)
with the hash GIN opclass.

--
Peter Geoghegan

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