Re: Index-only scans for GIST

On Fri, Aug 1, 2014 at 4:58 AM, Anastasia Lubennikova <
lubennikovaav(at)gmail(dot)com> wrote:
>
> Hi, hackers!
> I work on a GSoC project "Index-only scans for GIST"
>
https://wiki.postgresql.org/wiki/Support_for_Index-only_scans_for_GIST_GSoC_2014
>
> Repository is
> https://github.com/lubennikovaav/postgres/tree/indexonlygist2
> Patch is in attachments.
>
> It includes index-only scans for multicolumn GIST and new regression test.
> Fetch() method is realized for box and point opclasses.
>
> Documentation is not updated yet, but I'm going to do it till the end of
GSoC.
>
> I've got one question about query with OR condition. It is the last query
in regression test "gist_indexonly". It doesn't fail but it doensn't use
index-only scans. Could someone explain to me how it works?
> It seems to depend on build_paths_for_OR function. But I couldn't
understand how.
>

Very nice... please add your patch to the next commit fest [1].

Regards,

[1] https://commitfest.postgresql.org/action/commitfest_view?id=23

--
Fabrízio de Royes Mello
Consultoria/Coaching PostgreSQL
>> Timbira: http://www.timbira.com.br
>> Blog sobre TI: http://fabriziomello.blogspot.com
>> Perfil Linkedin: http://br.linkedin.com/in/fabriziomello
>> Twitter: http://twitter.com/fabriziomello