title: How to determine if columns match in Excel?
body: <p>I have 4 columns I would like to match up to each other. last_nameDB, first_nameDB, last_name, first_name.  I would like to use a formula that will simply output yes or no if the last name and first names match.  Examples of data and desired output are below.</p>
  
  <p><img src="https://i.stack.imgur.com/BG3Oq.gif" alt="enter image description here"></p>
  
  <p>Desired output:
  <img src="https://i.stack.imgur.com/TYKf8.gif" alt="enter image description here"></p>