For an ETL dataset that I want to update weekly, the date and time period (e.g., "Period : Latest 4 Wks - W/E 09/07/19...") is in the first cell of the Excel file. When I create the initial dataset (via Box), this field comes in as a column header. Since it is not a unique column name each week (because of the changing date), in ETL I can't automate selecting this column to collapse it or to split it. Ultimately, I want to create two constant columns, one column for "Latest 4 Weeks" and one column for the date "09/07/19". How do I push this column header into a row so I can extract these parts of the string?