Hi, > How are you talking to the database ? ODBC? JDBC? LibPQ? Something else? > Or do you want this from within PL/PgSQL ? I'm hacking on a client-side library which talks directly to the Postmaster using the wire protocol [1]. I need this information to improve some of the nullability-detection heuristics used by the library. Cheers, Dario [1] http://pgocaml.berlios.de/ -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general