title: How to fix the Overhead and Effective problem on InnoDB table?
body: <p><img src="https://i.stack.imgur.com/ExoQs.jpg" alt="enter image description here"></p>
  
  <p>Questions :</p>
  
  <p>1 - What is mean by Overhead? When I click "Optimize table" button on MyISAM table, Overhead and Effective data are gone. I wonder what it does to my table?</p>
  
  <p>2 - Do I need to care of Overhead and Effective value actually? How to fix the Overhead and Effective problem on InnoDB table?</p>