title: activejdbc update in clause is not working
body: <p>I want to update multiple records using activejdbc</p>
  
  <pre><code>Person.update("name = ?, last_name = ?", "name in ?", "Steve", "Johnson", "jagadeesh,varma,jampana,vikash");
  </code></pre>
  
  <p>no error, but nothing is updated in db</p>