Show the names of singers and the total sales of their songs.
SELECT T1.Name ,  sum(T2.Sales) FROM singer AS T1 JOIN song AS T2 ON T1.Singer_ID  =  T2.Singer_ID GROUP BY T1.Name
SELECT T1.Name ,  sum(T2.Sales) FROM singer AS T1 JOIN song AS T2 ON T1.Singer_ID  =  T2.Singer_ID GROUP BY T1.Name
[{'Name': 'Christy Walton', 'sum(T2.Sales)': 651421.0}, {'Name': 'Gina Rinehart', 'sum(T2.Sales)': 292000.0}, {'Name': 'Iris Fontbona', 'sum(T2.Sales)': 335000.0}, {'Name': 'Jacqueline Mars', 'sum(T2.Sales)': 275000.0}, {'Name': 'Liliane Bettencourt', 'sum(T2.Sales)': 1646407.0}, {'Name': 'Susanne Klatten', 'sum(T2.Sales)': 261000.0}]