SQL CLR Table-Valued Functions

http://msdn.microsoft.com/en-us/library/cc655659%28SQL.90%29.aspx
http://msdn.microsoft.com/en-us/library/ms131103.aspx
http://netindonesia.net/blogs/kasim.wirama/archive/2008/12/30/sql-clr-user-defined-function.aspx
http://www.soliddotnet.com/index.php/2009/09/23/insert-value-using-table-value-functions-tvf/