How Can I Merge Two Columns of Data Using Microsoft Excel and Eliminate Duplicate Values?. There are two situations in which you might need to merge two columns of data in Excel 2013.

How to Compare Two Excel Spreadsheets for Duplicate Rows. Excel 2013 can locate duplicate rows as long as one column contains a unique identifier for each record, such as a product ID or account ...

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.

If you want duplicate values to stand out in an Excel spreadsheet, you can choose between two conditional formatting rules.