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To: "CN" <cnliou9@fastmail.fm>
Cc: pgsql-sql@postgresql.org
Subject: Re: Creating Index 
In-reply-to: <20031002024019.295C37A25A@smtp.us2.messagingengine.com> 
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Comments: In-reply-to "CN" <cnliou9@fastmail.fm>
	message dated "Wed, 01 Oct 2003 18:40:19 -0800"
Date: Wed, 01 Oct 2003 23:18:07 -0400
Message-ID: <11961.1065064687@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"CN" <cnliou9@fastmail.fm> writes:
> Is creating a function that eats DATE as argument to build that index my
> only solution?

You haven't really explained what your problem is.  In general I'd not
guess that "year >= X and month >= Y" is a useful operation if Y is
different from 1.  You'd be selecting a very discontinuous set of
dates ...

			regards, tom lane