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.

Learn how to use the VLOOKUP formula to compare a maximum of two columns to have common values returned or to locate missing data.

How to use Excel formulas to compare multi-column lists Your email has been sent Duplicates in the same column are easy to find by sorting, filtering, and using conditional formatting. When none ...

A row-by-row formatting rule is as easy to apply as a column-by-column in Microsoft Excel, but you might not get the results you thought you would.

How to Make a Two Column Spread Sheet on Microsoft Excel. Unless someone's calculator needs an upgrade, one plus one usually adds up to two. With Microsoft Excel, you can put that math to work ...

How to Randomize the Contents of a Column in Excel. Suppose you have an Excel spreadsheet with a single column A and 52 rows. The value in each row's cell represents a playing card, for example K ...

Boolean logic: The method used to evaluate conditions, returning either TRUE or FALSE. Logical functions: The primary logical ...

If you wish to count the same or duplicate values in a column only once in Excel or the count of occurances of duplicate values, read this article.