Microsoft Excel comes with a lot of built-in functionality that doesn't restrict you to comparing data in two columns using only one method.

Microsoft Excel worksheets can become complicated, especially when comparing columns for validation. Manually cross-checking large datasets on your personal computer may cause you to overlook ...

I'm not sure what this should actually be called in Excel, but this is what I'm trying to do. I've got two spreadsheets with data on them. One spreadsheet has 22,858 rows of data. The other ...