Re: select best price
| От | Gary Stainburn |
|---|---|
| Тема | Re: select best price |
| Дата | |
| Msg-id | 200510261634.44796.gary.stainburn@ringways.co.uk обсуждение исходный текст |
| Ответ на | select best price (Gary Stainburn <gary.stainburn@ringways.co.uk>) |
| Ответы |
Re: select best price
|
| Список | pgsql-sql |
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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