MY SQL: => SELECT * FROM Categoria WHERE CodCategoria = Erro Query--: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1 MY SQL: => SELECT * FROM SubCategoria WHERE CodSubCategoria = Erro Query--: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1