This month’s column shows how to clean and join data using Excel’s Power Query.

Highlighting or even deleting duplicate records in Excel is simple but listing them isn't as easy. Fortunately, you can use Power Query to easily display a list of duplicate values or records.

Learn how to import, clean, and transform external data in Excel using Power Query. Simplify workflows and master data analysis today ...

Then, in the Power Query Editor, select the headers of all the columns you want to unpivot. In this example, you'll need to click the "2020" header, press Shift, and then click the "2024" header.

The Power Query Editor includes the ribbon, queries pane, data preview, and applied steps pane. Key data transformation techniques include trimming, replacing values, filtering rows, and handling ...