Re: SQL Question

For the first request (How can i select only the newest record for each ProdId ?), you can do :

select * from test."tableProd" u
where u."LastUpdate" = (select max(t."LastUpdate")
from test."tableProd" t
where u."ProdId" = t."ProdId")

-----Message d'origine-----
De : pgsql-general-owner(at)postgresql(dot)org
[mailto:pgsql-general-owner(at)postgresql(dot)org]De la part de Alex
Envoy : vendredi 15 avril 2005 13:59
: pgsql-general(at)postgresql(dot)org
Objet : [GENERAL] SQL Question

Hi,

i have a table

ProdId | LastUpdate
-------+------------
100 | 2005-04-01
100 | 2005-03-01
100 | 2005-02-01
200 | 2005-04-01
200 | 2005-03-01
200 | 2005-02-01

- How can i select only the newest record for each ProdId ?

100 | 2005-04-01
200 | 2005-04-01

- How can i select to retrieve the last 2 dates in record

100 | 2005-04-01 | 2005-03-01
200 | 2005-04-01 | 2005-03-01

Thanks
Alex

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