agora inbox for pgsql-sql@postgresql.org
help / color / mirror / Atom feedFrom: Adrian Klaver <adrian.klaver@aklaver.com>
To: Venkatesan, Sekhar <sekhar.venkatesan@emc.com>
To: David G. Johnston <david.g.johnston@gmail.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-sql@postgresql.org <pgsql-sql@postgresql.org>
Subject: Re: Question on PostgreSQL DB behavior w.r.t JOIN and sort order.
Date: Mon, 8 Feb 2016 22:01:53 -0800
Message-ID: <56B980D1.7010509@aklaver.com> (raw)
In-Reply-To: <F84DE43FDACD4C45AA84E2DA016FAE2F1C65BF1C@MX105CL01.corp.emc.com>
References: <F84DE43FDACD4C45AA84E2DA016FAE2F1C65BE54@MX105CL01.corp.emc.com>
<21082.1454994009@sss.pgh.pa.us>
<F84DE43FDACD4C45AA84E2DA016FAE2F1C65BEC8@MX105CL01.corp.emc.com>
<CAKFQuwbye-t24D59BUR05YyUtuaiFgCQWHMVq6qcz0axsKrT=A@mail.gmail.com>
<F84DE43FDACD4C45AA84E2DA016FAE2F1C65BF07@MX105CL01.corp.emc.com>
<CAKFQuwbmAtkv8tHq3CuiRH0encj59SRHBMAMezW1x-6CVauLnw@mail.gmail.com>
<F84DE43FDACD4C45AA84E2DA016FAE2F1C65BF1C@MX105CL01.corp.emc.com>
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-sql>
On 02/08/2016 09:53 PM, Venkatesan, Sekhar wrote:
> Yes. is there an option/configuration to tell the postgres
> optimizer/planner to generate plans to include the sort order instead of
> speed?
What columns in a table would that be and then what order?
>
> *From:*David G. Johnston [mailto:david.g.johnston@gmail.com]
> *Sent:* Tuesday, February 09, 2016 11:20 AM
> *To:* Venkatesan, Sekhar
> *Cc:* Tom Lane; pgsql-sql@postgresql.org
> *Subject:* Re: [SQL] Question on PostgreSQL DB behavior w.r.t JOIN and
> sort order.
>
> On Monday, February 8, 2016, Venkatesan, Sekhar
> <sekhar.venkatesan@emc.com <mailto:sekhar.venkatesan@emc.com>> wrote:
>
> Is there a way to tell the optimizer to retain the sort order if that is
> possible please?
>
> You mean, besides the ORDER BY clause?
>
> David J.
>
--
Adrian Klaver
adrian.klaver@aklaver.com
--
Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-sql
view thread (17+ messages) latest in thread
Message-ID: <56B980D1.7010509@aklaver.com>
Permalink: ../56B980D1.7010509@aklaver.com/
Also on: postgresql.org/message-id/56B980D1.7010509@aklaver.com
reply
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: adrian.klaver@aklaver.com, sekhar.venkatesan@emc.com, david.g.johnston@gmail.com, tgl@sss.pgh.pa.us
Subject: Re: Question on PostgreSQL DB behavior w.r.t JOIN and sort order.
In-Reply-To: <56B980D1.7010509@aklaver.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox