Erik Svensen wants to display columns dynamically in Power Query:
This means that even though we might add new columns to the ProductsAttributes table – it will still only be Brand that is expanded and only that column.
The bolded arguments is 2 lists that contains the Column names to expand and the new names of the columns – the last argument is optional so we can actually skip that if we want the original names – https://docs.microsoft.com/en-us/powerquery-m/table-expandtablecolumn
Read on to see how to do this.