Sum up unique values in column per criteria in other column
问题 | A B ---|----------------------------------------- 1 | Total 1.900 ---|----------------------------------------- 2 | Product_A 700 3 | Product_A 700 ---|----------------------------------------- 4 | Product_B 300 ---|----------------------------------------- 5 | Product_C 200 6 | Product_C 200 ---|------------------------------------------ 7 | Product_D 700 8 | Product_D 700 9 | Prodcut_D 700 10 | In Cell B1 I want to sum the unique values in Column B per product in Column A . B1 = 700 + 300