Groups rows in a table based on specified columns and applies aggregations in Power Query.
Challenge No. 163: Convert the monthly sales data from the Question table into seasonal sales as shown in the Result table.
Solved using:Excel (FILTER, GROUPBY, HSTACK), Google Sheets, Power Query (Table.Group, Table.AddColumn, Table.Group), Python, Python in Excel, and R.
Challenge No. 161: Extract the list of dates associated with each product and display them under each other in separate columns.
Solved using:Excel (DROP, FILTER, HSTACK), Google Sheets, Power Query (Table.Group), Python, Python in Excel, and R.
Challenge No. 158: From the question table, extract the last transaction per product for each month.
Solved using:Excel (DROP, FILTER, GROUPBY), Google Sheets, Power Query (Date.Month, Table.AddColumn, Table.Combine), Python, Python in Excel, and R.
Challenge No. 85: Generate the result table from problem table.
Solved using: Python in Excel.
Challenge No. 155: Transform the question table into the result table format.
Solved using:Excel (DROP, FILTER, HSTACK), Google Sheets, Power Query (List.Skip, List.Transform, Table.AddColumn), Python, Python in Excel, and R.
Challenge No. 153: The table includes two columns, From and To, where each row represents a range of dates.
Solved using:Excel (DROP, HSTACK, IF), Google Sheets, Power Query (Table.Group), Python, Python in Excel, and R.
Challenge No. 77: Generate the result table from problem table.
Solved using: Python in Excel.
Challenge No. 148: For each customer, filter their first, last, and middle transactions from the provided “transactions” table.
Solved using:Excel (CHOOSEROWS, DROP, FILTER), Google Sheets, Power Query (Table.Combine, Table.Group), Python, Python in Excel, and R.
Challenge No. 147: Transform the question structure into the result structure.
Solved using:Excel (FILTER, HSTACK, IF), Google Sheets, Power Query (List.Skip, List.Split, Table.AddColumn), Python, Python in Excel, R, and VBA.
Challenge No. 75: Groups are separated by blank rows in Problem table.
Solved using: Python in Excel.
