Re: select best price
От | Gary Stainburn |
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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 This email does not contain private or confidential material as it may be snooped on by interested government parties for unknown and undisclosed purposes - Regulation of Investigatory Powers Act, 2000
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