Does SQL Server 2008 have a built in debugger? I've got a stored procedure that returns an error if it is fed a string of alphabetic characters (as opposed to numeric) and I'd like to be able to determine what line it gets to before returning an error.
SQL Server Management Studio can debug stored procedures in SQL Server 2008. Open your stored procedure, and instead of hitting the "execute" button (the red exclamation mark) hit the "debug" button (the green "play" arrow).