title: WHERE clause before INNER JOIN
body: <p>If I have</p>
  
  <pre><code>SELECT * FROM Table1 t1 
  LEFT JOIN Table2 t2 ON t1.id = t2.id 
  WHERE t1.user='bob';
  </code></pre>
  
  <p>Does the <code>WHERE</code> clause run after the two tables are <code>JOINED</code>? <br></p>
  
  <p>How do I make it so it runs prior to the JOIN? <br></p>