Challenge No. 15: It may seem unreasonable, but the manager has requested that I convert the question table into the result table, ensuring that information for each product is provided in individual rows.
Solved using:Excel, Power Query, and R.
Structured Data Processing
Processing structured data in a consistent manner
Table Transformation! Part 1
Challenge No. 1: On various dates, the cumulative sales values (from the beginning of the year) for different products are presented (in the Question table).
Solved using:Excel (DROP, FILTER, HSTACK), and Power Query (Table.AddColumn, Table.TransformColumnTypes).