Hello
2009/9/22 Louis-David Mitterrand <vindex+lists-pgsql-...@apartia.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,
>
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