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@xxxxxxxxxxxx] Envoyé : vendredi 15 avril 2005 15:42 À : GIROIRE, Nicolas (COFRAMI) Cc : Alex; pgsql-general@xxxxxxxxxxxxxx Objet : Re: 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 This mail has originated outside your organization, either from an external partner or the Global Internet. Keep this in mind if you answer this message. This e-mail is intended only for the above addressee. It may contain privileged information. If you are not the addressee you must not copy, distribute, disclose or use any of the information in it. If you have received it in error please delete it and immediately notify the sender. Security Notice: all e-mail, sent to or from this address, may be accessed by someone other than the recipient, for system management and security reasons. This access is controlled under Regulation of Investigatory Powers Act 2000, Lawful Business Practises. ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
