title: JOIN statement not working with where clause
body: <p>I'm trying to do</p>
  
  <pre><code>select * 
  from buildings 
  where levels = 3 
  join managers;
  </code></pre>
  
  <p>but it says error at join. I want to match the the id of the building with the id in the managers table so I think I want natural join.</p>