Le vendredi 10 février 2012 à 14:19 -0500, David Johnston a écrit : > One possibility is to add a "version" field (integer) and combine evenement and version to create the unique. I'd also create a partial unique on evenement/annule to ensure you do not make more than one active version. > Hi David, I don't find this solution very much different from using a surrogate key? Except that you then have to code it yourself, instead of using the built-in serial. -- Vincent Veyron http://marica.fr/ Logiciel de gestion des sinistres et des contentieux pour le service juridique -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
