Hi, > I presume you mean that the server is saying the column can be NULL, > not that it is actually NULL, since: Yeah, that is the correct semantics: "it can be NULL". It does make a world of difference on the client side, because an "int4 never NULL" is a different type from "int4 possibly NULL". The type mismatch means the program won't even compile. Cheers, C.S. ____________________________________________________________________________________ Shape Yahoo! in your own image. Join our Network Research Panel today! http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7 ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq