From: Tom Lane <tgl@sss.pgh.pa.us>
To: John Lister <john.lister-ps@kickstone.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: obtaining difference between minimum value and next in size
Date: Wed, 17 Nov 2010 10:42:36 -0500
Message-ID: <27014.1290008556@sss.pgh.pa.us> (raw)
In-Reply-To: <3BC753A3784F488F98304300B6E437FD@squarepi.com>
References: <3BC753A3784F488F98304300B6E437FD@squarepi.com>
"John Lister" <john.lister-ps@kickstone.com> writes:
> Is it possible to obtain the difference between just the minimum price and the next one up per product,
If you're using >= 8.4, try a window function. LEAD or LAG ought to
do it.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, john.lister-ps@kickstone.com
Subject: Re: obtaining difference between minimum value and next in size
In-Reply-To: <27014.1290008556@sss.pgh.pa.us>
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