From: Tom Lane <tgl@sss.pgh.pa.us>
To: Peter Eisentraut <peter_e@gmx.net>
cc: pgsql-docs@postgresql.org
Subject: Re: pattern matching indexing
In-reply-to: <1356360300.5854.2.camel@vanquo.pezone.net>
References: <1356360300.5854.2.camel@vanquo.pezone.net>
Comments: In-reply-to Peter Eisentraut <peter_e@gmx.net>
	message dated "Mon, 24 Dec 2012 09:45:00 -0500"
Date: Mon, 24 Dec 2012 10:12:45 -0500
Message-ID: <4603.1356361965@sss.pgh.pa.us>
Precedence: bulk
Sender: pgsql-docs-owner@postgresql.org

Peter Eisentraut <peter_e@gmx.net> writes:
> To index pattern matching, you can use the _pattern_ops operator
> classes, or you can set the column collation in the index to "C".  The
> latter option doesn't appear to be documented (unless you read very deep
> between the lines).  Is that intentional?

It is stated at
http://www.postgresql.org/docs/devel/static/indexes-opclass.html
that you don't need the special pattern opclasses in C locale.
Feel free to rephrase or document elsewhere if you find that too
obscure.

			regards, tom lane


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