2. The relational database management system set forth in claim 1 wherein: the table function has a parameter; and the rewrite method uses the parameter in producing the returned SQL string.
2. The relational database management system set forth in claim 1 wherein: the table function has a parameter; and the rewrite method uses the parameter in producing the returned SQL string. 3. The relational database management system set forth in claim 2 wherein: the rewrite method determines from the parameter whether it is possible to produce the SQL string and provides an indication when it is not possible; and the relational database management system responds to the indication by not rewriting the SQL statement.