| From: | Oleg Bartunov <obartunov(at)gmail(dot)com> |
|---|---|
| To: | Peter Geoghegan <pg(at)heroku(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, 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 20:35:40 |
| Message-ID: | CAF4Au4y41h4sJx28Fms+L9b1M-cHQ1EtXRkOwTTWUVjq6eM3Kw@mail.gmail.com |
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| Lists: | pgsql-hackers |
FYI,
http://obartunov.livejournal.com/178495.html
This is hash based gin opclass for hstore with all operators support.
It's pity we had no time to do the same for jsonb, but we may include
it and couple of other opclasses to contrib/jsonx.
Oleg
On Wed, May 7, 2014 at 12:18 AM, Peter Geoghegan <pg(at)heroku(dot)com> wrote:
> 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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