Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1WfwpZ-0003OV-2s for pgsql-performance@arkaria.postgresql.org; Thu, 01 May 2014 19:39:41 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1WfwpY-00044v-J9 for pgsql-performance@arkaria.postgresql.org; Thu, 01 May 2014 19:39:40 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1WfwpX-00044p-NN for pgsql-performance@postgresql.org; Thu, 01 May 2014 19:39:39 +0000 Received: from prod2.officenet.no ([195.159.87.246]) by magus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1WfwpU-00051v-Rr for pgsql-performance@postgresql.org; Thu, 01 May 2014 19:39:39 +0000 Received: from localhost ([127.0.0.1] helo=prod2) by prod2.officenet.no with esmtp (Exim 4.76) (envelope-from ) id 1WfwpU-0003vu-Ji for pgsql-performance@postgresql.org; Thu, 01 May 2014 21:39:36 +0200 Date: Thu, 1 May 2014 21:39:36 +0200 (CEST) From: Andreas Joseph Krogh To: pgsql-performance@postgresql.org Message-ID: In-Reply-To: Subject: Re: Optimize query for listing un-read messages MIME-Version: 1.0 X-Mailer: OfficeNet Mail 1.9.0-SNAPSHOT X-Pg-Spam-Score: -0.8 (/) Content-Type: multipart/related; boundary="----=_Part_31_1393484701.1398973176518" List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org ------=_Part_30_2108212422.1398973176518 Content-Type: multipart/related; boundary="----=_Part_31_1393484701.1398973176518" ------=_Part_31_1393484701.1398973176518 Content-Type: multipart/alternative; boundary="----=_Part_32_1895914901.1398973176530" ------=_Part_32_1895914901.1398973176530 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable P=C3=A5 torsdag 01. mai 2014 kl. 21:30:39, skrev Pavel Stehule < pavel.stehule@gmail.com >: Hello [snip] =C2= =A0 I had=20 a perfect success on similar use case with descent ordered partial index http://www.postgresql.org/docs/9.3/interactive/sql-createindex.html=20 =C2= =A0 I'm not=20 getting good performance. Are you able to craft an example using my schema = and=20 partial index? =C2=A0 Thanks. =C2=A0 -- Andreas Jospeh Krogh CTO / Partner = - Visena AS=20 Mobile: +47 909 56 963 andreas@visena.com =20 www.visena.com =C2=A0 ------=_Part_32_1895914901.1398973176530 Content-Type: text/html;charset=UTF-8 Content-Transfer-Encoding: quoted-printable
P=C3=A5 torsdag 01. mai 2014 kl. 21:30:39, skrev Pavel Stehule <pavel.stehule@gma= il.com>:
Hello
[snip]
=C2=A0
I had a perfect success on similar use case with descent ordered parti= al index

http://www.postgresql.org/docs/9.3/interactive/sql-c= reateindex.html
=C2=A0
I'm not getting good performance. Are you able to craft an example usi= ng my schema and partial index?
=C2=A0
Thanks.
=C2=A0
--
Andrea= s Jospeh Krogh
CTO / Partner<= /span> - Visena AS
Mobile: +47 90= 9 56 963
3D""
=C2=A0
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