| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Pritam Baral <pritam(at)pritambaral(dot)com> |
| Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Index usage for elem-contained-by-const-range clauses |
| Date: | 2017-02-26 13:46:26 |
| Message-ID: | CA+TgmoYTh=7DEu1umHZpgacOJjxRt0rkci7q-EaGqwyCrfm31g@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Feb 23, 2017 at 4:47 AM, Pritam Baral <pritam(at)pritambaral(dot)com> wrote:
> The topic has been previously discussed[0] on the -performance mailing list,
> about four years ago.
>
> In that thread, Tom suggested[0] the planner could be made to "expand
> "intcol <@
> 'x,y'::int4range" into "intcol between x and y", using something similar
> to the
> index LIKE optimization (ie, the "special operator" stuff in indxpath.c)".
>
> This patch tries to do exactly that.
Please add your patch to https://commitfest.postgresql.org/ so it
doesn't get overlooked.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
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