Re: selecting latest record

Hello

2009/9/22 Louis-David Mitterrand <vindex+lists-pgsql-sql(at)apartia(dot)org>:
> Hi,
>
> I have a simple table
>
> price(id_product, price, date)
>
> which records price changes for each id_product. Each time a price
> changes a new tuple is created.
>
> What is the best way to select only the latest price of each id_product?

there are more ways - depends on what you wont.

one way is

SELECT *
FROM price
WHERE (id_product, date) = (SELECT id_product, max(date)
FROM price
GROUP BY
id_product)

Regards
Pavel Stehule

>
> Thanks,
>
> --
> Sent via pgsql-sql mailing list (pgsql-sql(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-sql
>