title: casting multiple columns astype
body: <p>Should be an easy to answer question... Am I doing this wrong? Can I not cast multiple columns?</p>
  
  <pre><code>&gt;&gt;&gt; val results2 = results.select( results["HCAHPS Base Score"].cast(IntegerType).as(results["HCAHPS Base Score"]), results["HCAHPS Consistency Score"].cast(IntegerType).as(results["HCAHPS Consistency Score"]) )
  File "&lt;stdin&gt;", line 1
  val results2 = results.select( results["HCAHPS Base Score"].cast(IntegerType).as(results["HCAHPS Base Score"]), results["HCAHPS Consistency Score"].cast(IntegerType).as(results["HCAHPS Consistency Score"]) )
                 ^
  SyntaxError: invalid syntax
  </code></pre>
  
  <p>The syntax error keeps popping up right around the comma...</p>