title: PostgreSQL: What is meant by "please specify covering index name"
body: <p>I wanted to edit the actions in a table. However I get the error message "Please specify covering index name." when I try to edit the FK. How do I fix this?</p>
  
  <p>The table consists of only two columns:</p>
  
  <p><a href="https://i.stack.imgur.com/Thy7s.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Thy7s.png" alt="picture of database table"></a>  </p>
  
  <p>The foreign keys:</p>
  
  <p><a href="https://i.stack.imgur.com/2Wd4R.png" rel="noreferrer"><img src="https://i.stack.imgur.com/2Wd4R.png" alt="foreign keys"></a></p>
  
  <p>category FK:</p>
  
  <p><a href="https://i.stack.imgur.com/QJGke.png" rel="noreferrer"><img src="https://i.stack.imgur.com/QJGke.png" alt="category FK"></a></p>