Re: select best price

From: Gary Stainburn <gary(dot)stainburn(at)ringways(dot)co(dot)uk>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: select best price
Date: 2005-10-26 15:38:48
Message-ID: 200510261634.44796.gary.stainburn@ringways.co.uk
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On Wednesday 26 October 2005 4:21 pm, Gary Stainburn wrote:
> Hi folks
>
> I've got a table holding item code(cs_id), supplier a/c (co_id) , and
> price (cs_price).
>
> How can I select the rows containing the lowest price for each item
> code?
>
> I've tried various forms of min() etc and know it must be simple but
> I'm stumped.
>
> Gary

I've come up with the select below. Is there a better/more efficient
way of doing this?

select cp.cs_id, from cons_price_details cp,
(select cs_id, min(cs_price) as cs_price
from cons_price_details
group by cs_id
) v
where cp.cs_id = v.cs_id and cp.cs_price = v.cs_price;

--
Gary Stainburn

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