Hi Michael & Tom, First of all, thanks to Michael for your response. I did enable logging of SQL queries but still I could find no SQL statements in the logs. This led me to believe it was a client-side error. Then I saw the response from Tom which confirmed what I was thinking, so my second set of thank-you's goes out to Tom.
I declared a function as follows: test_func(integer, character varying, integer, character varying). I used Visual Studio's Server Explorer to view the function and it showed up as test_func(integer, integer, character varying, character varying). The problem is that Server Explorer groups parameters together according to data type. If you follow the function declaration according to Server Explorer, you will end up with mismatched parameters. If you follow the function declaration according to pgAdmin, your code will work. From now on, at least until the problem in .NET is fixed, I will be using pgAdmin to view my functions instead of Visual Studio's Server Explorer. FYI, I am using CoreLab's PostgreSQL.NET drivers, I've reported the issue to them as well. At the time I didn't know if it was an issue with the .NET drivers or with PostgreSQL so I reported my findings to this forum as well as theirs. Ok then, that's a mouthful, thanks again guys for the help. Rommel Edwards, Barbados, (sunny) Caribbean. ---------------------------(end of broadcast)--------------------------- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate