Display dataset popul1                    1

                continent             total_pop
                -------------------------------
                Africa              706,611,183
                Asia              3,379,469,458
                Australia            18,255,944
                Central America      65,283,910
                Europe              811,680,062
                North America       384,801,818
                Oceania               3,422,548
                South America       316,303,397

                     Display dataset popul2                    2

                continent             total_pop
                -------------------------------
                Africa              706,611,183
                Asia              3,379,469,458
                Australia            18,255,944
                Central America      65,283,910
                Europe              811,680,062
                North America       384,801,818
                Oceania               3,422,548
                South America       316,303,397

                     Display dataset popul2                    3

                        continent
                        ---------------
                        Africa
                        Asia
                        Australia
                        Central America
                        Europe
                        North America
                        Oceania
                        South America

                Rename column continent to cont                4

                        cont
                        --------------
                        Africa
                        Asia
                        Australia
                        Central America
                        Europe
                        North America
                        Oceania
                        South America