Let's say there's an index on the date column: Does the where clause
approach necessarily out perform the distinct on version? Hoping the OP
has enough data to make analyse useful.
A. Kretschmer wrote:
In response to Louis-David Mitterrand :
Hi,
I have a simple table
price(id_product, p
In response to Louis-David Mitterrand :
> 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?
The
On Tue, Sep 22, 2009 at 11:56:54AM +0200, Pavel Stehule wrote:
>
> 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
Hello
2009/9/22 Louis-David Mitterrand :
> 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 a
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?
Thanks,
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