title: ORA-00936: missing expression (Name of employees who work for more than 2 properties)
body: <p>I'm not sure what expression I am missing,</p>
  <p><img src="https://i.stack.imgur.com/zLZcX.png" alt="enter image description here" /></p>
  <pre><code>select first_name from employee
  where Employee_ID in
  (select Employee_ID from service
  where Property_ID having count(*)&gt;2);
  </code></pre>