title: SQL syntax error at or near "ORDER" using PostgreSQL
body: <p>Here is my code:</p>
  <pre><code>SELECT
      customerid, numseats, fistname, surname, totalcost
  FROM
      leadcutomer, flightbooking;
  ORDER BY
      'totalcost' DESC;
  </code></pre>
  <p>The error I get is:</p>
  <blockquote>
  <p>ERROR: syntax error at or near &quot;ORDER&quot;</p>
  </blockquote>
  <p>I am using <a href="https://en.wikipedia.org/wiki/PostgreSQL#Database_administration" rel="nofollow noreferrer">pgAdmin</a> 4. What is wrong with it?</p>