How can I expand all lists in a row of lists at the same time without repeating values?
问题 In response to this question regarding how to expand all lists in a row of lists at the same time, @Carl Walsh kindly provided this succinct and helpful code: let Source = #table({"A", "B"}, {{ {1,2}, {3,4}} }), Expanded = List.Accumulate( Table.ColumnNames(Source), Source, (state, column) => Table.ExpandListColumn(state, column)) in Expanded Which yields this: I would like to get this result instead: I don't want values repeated in previously processed columns as each follow-on column is