Re: SQL Question - Mailing list pgsql-general

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@postgresql.org
[mailto:pgsql-general-owner@postgresql.org]De la part de Alex
Envoy� : vendredi 15 avril 2005 13:59
� : pgsql-general@postgresql.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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