title: How does PostgreSQL handle multiple WHERE clauses?
body: <pre><code>where x and y and z
  </code></pre>
  
  <p>or </p>
  
  <pre><code>where y and z and x
  </code></pre>
  
  <p>Is there a difference in terms of performance and how does the PostgreSQL filter?<br>
  Where can I find documentation on this?</p>