There are two situations in which you might need to merge two columns of data in Excel 2013. If you've imported two columns of data from separate sources, you might want to combine them into a single ...

Use Excel data validation to prevent duplicate values in a column Your email has been sent Prevent duplicates before they happen by combining a simple function with data validation. Excel has built-in ...

Click on the heading of the column you want to evaluate for duplicates. Click and drag from one heading to the next to select more than one column. Hold down the "Ctrl" key and click to select columns ...

Microsoft Excel and Google Sheets, two leading spreadsheet applications, offer many features to help users work efficiently with their data. One shared challenge spreadsheet that users face is ...