Re: SQL Question

Ok but you haven't specify that and in your example there is no similar use

one solution is to change LastUpdate type and use timestamp.

to insert you make :
insert into test."tableProd" values (100, '2004-05-01 02:52:12') but it exists other format for time....see postgresql doc for different type (here the french version http://traduc.postgresqlfr.org/pgsql-fr/datatype-datetime.html)

With timestamp the accuracy is better, you have until second.

-----Message d'origine-----
De : Richard Huxton [mailto:dev(at)archonet(dot)com]
Envoy : vendredi 15 avril 2005 15:42
: GIROIRE, Nicolas (COFRAMI)
Cc : Alex; pgsql-general(at)postgresql(dot)org
Objet : Re: [GENERAL] SQL Question

GIROIRE, Nicolas (COFRAMI) wrote:
> 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")

Although this only guarantees one row if LastUpdate is unique for every
ProdId.
--
Richard Huxton
Archonet Ltd

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