From: Russell Smith <mr-russ@pws.com.au>
To: Michael Glaesemann <grzm@seespotcode.net>
Cc: Stephen Davies <scldad@sdc.com.au>
Cc: pgsql-performance@postgresql.org
Subject: Re: Optimising "in" queries
Date: Thu, 23 Aug 2007 17:42:28 +1000
Message-ID: <46CD3A64.9050302@pws.com.au> (raw)
In-Reply-To: <46CD3869.90600@pws.com.au>
References: <200708221210.36770.scldad@sdc.com.au>
<46CC16F3.7060606@pws.com.au>
<AAF53AEE-B98C-45BD-B80F-8FA528BFB98B@seespotcode.net>
<46CD3869.90600@pws.com.au>
Russell Smith wrote:
>
> Filter: (sensor_id = ANY ('{1137,1138,1139,1140}'::integer[]))
>
> I've never seen this plan item except for when array's are involved. I
> could be wrong. I'd like to know how this is generated when you don't
> have an array.
>
I have just discovered that PG 8.2 will turn an IN clause into an array
search instead of an OR list. Sorry all.
Regards
Russell Smith
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: mr-russ@pws.com.au, grzm@seespotcode.net, scldad@sdc.com.au
Subject: Re: Optimising "in" queries
In-Reply-To: <46CD3A64.9050302@pws.com.au>
* 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