Как достать значения первичного и внешнего ключей?

    ObservableList<Fuel> fuel;
 
    Connection con() {
        String login = "sa";
        String password = "Rasch200";
        String url1 = "jdbc:sqlserver://DESKTOP-UO6FODN\\sqlexpress;databaseName=GazStation;trustServerCertificate=true";
        Connection connection;
        try {
            connection = DriverManager.getConnection(url1, login, password);
        return connection;
        } catch (SQLException e) {
            System.out.println("Oops, there's an error with connecting :(...");
            e.printStackTrace();
            return null;
        }
    }
 
    void setCellTable() {
        FIDColumn.setCellValueFactory(new PropertyValueFactory<>("fuel"));
        TitleColumnFuel.setCellValueFactory(new PropertyValueFactory<>("title"));
        PriceColumnFuel.setCellValueFactory(new PropertyValueFactory<>("price"));
        PIDFuelColumn.setCellValueFactory(new PropertyValueFactory<>("producer"));
        ActualColumnFuel.setCellValueFactory(new PropertyValueFactory<>("actuality"));
        CountColumnFuel.setCellValueFactory(new PropertyValueFactory<>("count"));
    }
 
    public void initialize(URL url, ResourceBundle rb) throws SQLException {
        setCellTable();
        loadDataFromFuel();
    }
 
    void loadDataFromFuel() throws SQLException {
        fuel = FXCollections.observableArrayList();
        String sql = "SELECT * FROM FUEL";
        Statement statement = con().createStatement();
        ResultSet rst = statement.executeQuery(sql);
        while (rst.next()){
            fuel.add(new Fuel(rst.getInt(1), rst.getString(2), rst.getInt(3), rst.getInt(4), rst.getString(5), rst.getInt(6)));
        }
        TableFuel.setItems(fuel);
    }