From: David Garamond <lists@zara.6.isreserved.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-sql@postgresql.org
Subject: Re: olympics ranking query
Date: Sat, 21 Aug 2004 00:11:36 +0700
Message-ID: <412630C8.5000004@zara.6.isreserved.com> (raw)
In-Reply-To: <22979.1093020382@sss.pgh.pa.us>
References: <41262968.2000507@zara.6.isreserved.com>
<22979.1093020382@sss.pgh.pa.us>
Tom Lane wrote:
>>Challenge question: is there a simpler way to do query #1 (without any
>>PL, and if possible without sequences too?
>
> Can't without sequences AFAIK, but you certainly can do it simpler:
>
> select setval('seq1', 0);
>
> select nextval('seq1'), * from
> (select count(*) as numranker,
> gold, silver, bronze
> from countrymedal
> group by gold, silver, bronze
> order by gold desc, silver desc, bronze desc) ss;
This is not quite the same. The ranks are sequential, but they skip, so
as to match the number of participating countries.
--
dave
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Subject: Re: olympics ranking query
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