pg.ddx.io  pgsql-performance@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Michael Glaesemann <grzm@seespotcode.net>
To: Josh Berkus <josh@agliodbs.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: [HACKERS] Slow count(*) again...
Date: Thu, 3 Feb 2011 17:19:04 -0500
Message-ID: <592C8787-E659-49C8-AFD1-96A8B25331DC@seespotcode.net> (raw)
In-Reply-To: <4D4B2740.3070902@agliodbs.com>
References: <201102012247.p11Ml6u02682@momjian.us>
	<4D48914B.4050403@dunslane.net>
	<4D489AD1.1010105@vmsinfo.com>
	<AANLkTiknZi97dDwm7sHqy0EL7tpNEP9sY5uPV6AN+q=u@mail.gmail.com>
	<4D499E55.4020107@vmsinfo.com>
	<4D49A6B9.4060608@2ndquadrant.com>
	<4D49C482.4010707@vmsinfo.com>
	<4D49F0BA.9000901@2ndquadrant.com>
	<4D4A16BF.1020304@vmsinfo.com>
	<4D4A4844.3020409@2ndquadrant.com>
	<4D4AD9F6.6040903@vmsinfo.com>
	<4D4AE16E.9040807@peak6.com>
	<4D4B17B4.9030406@vmsinfo.com>
	<871v3o3jgu.fsf@cbbrowne.afilias-int.info>
	<4D4B2740.3070902@agliodbs.com>


On Feb 3, 2011, at 17:08, Josh Berkus wrote:

> On 2/3/11 1:18 PM, Chris Browne wrote:
>> mladen.gogala@vmsinfo.com (Mladen Gogala) writes:
>>> I must say that this purist attitude is extremely surprising to
>>> me. All the major DB vendors support optimizer hints,
> 
> I don't think that's actually accurate.  Can you give me a list of
> DBMSes which support hints other than Oracle?

1 minute of Googling shows results for:

db2:
<http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=/com.ibm.db2.doc.admin/p9li37...;

informix:
<http://www.ibm.com/developerworks/data/zones/informix/library/techarticle/0502fan/0502fan.html;

sybase:
<http://searchenterpriselinux.techtarget.com/answer/Query-hints-to-override-optimizer;

mysql:
<http://dev.mysql.com/doc/refman/5.0/en/index-hints.html;

I haven't read much of the rest of this thread, so others may have brought these up before.

Michael Glaesemann
grzm seespotcode net






view thread (246+ messages)  latest in thread

Message-ID: <592C8787-E659-49C8-AFD1-96A8B25331DC@seespotcode.net>
Permalink:  ../592C8787-E659-49C8-AFD1-96A8B25331DC@seespotcode.net/
Also on:    postgresql.org/message-id/592C8787-E659-49C8-AFD1-96A8B25331DC@seespotcode.net

 · 

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-performance@postgresql.org
  Cc: grzm@seespotcode.net, josh@agliodbs.com
  Subject: Re: [HACKERS] Slow count(*) again...
  In-Reply-To: <592C8787-E659-49C8-AFD1-96A8B25331DC@seespotcode.net>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox