title: Cassandra "select as" to be case sensitive
body: <p>Cassandra version: 2.2.0</p>
  
  <p>I have Cassandra table like below:</p>
  
  <pre><code> app_id                           | ts                       | os_name   
  ----------------------------------+--------------------------+-----------
   bb61ffae3b8f73e61572b61450d6d5d6 | 2015-08-04 22:00:00-0700 |   Android
   bb61ffae3b8f73e61572b61450d6d5d6 | 2015-08-05 22:00:00-0700 |   Android
  </code></pre>
  
  <p>and when I "<strong>select app_id as appID</strong>", the returned column name is all lower-case.</p>
  
  <pre><code>cqlsh:myDB&gt; SELECT app_id as appID FROM daily_activity_report limit 10;
  </code></pre>
  
  <p>Then I got:</p>
  
  <pre><code> appid
  ----------------------------------
   bb61ffae3b8f73e61572b61450d6d5d6
   7b87263e57a34deccb462b26786896b3
  </code></pre>
  
  <p>In my query I'm specifying <strong>upper-case</strong> "SELECT distinct app_id as <strong>appID</strong>", but returned is <strong>lower-case</strong> "<strong>appid</strong>".</p>
  
  <p>Is there any config variable I'm missing to enable case sensitive column name? How to make it case sensitive?</p>
  
  <p>Thanks a lot.</p>
  
  <hr>
  
  <p>update:
  I also tried to add quote to the column name <strong>'appID'</strong> as below, but no luck.</p>
  
  <pre><code>cqlsh:myDB&gt; SELECT app_id as 'appID' FROM daily_activity_report limit 10;
  </code></pre>
  
  <p>response:</p>
  
  <pre><code>SyntaxException: &lt;ErrorMessage code=2000 [Syntax error in CQL query] 
  message="line 1:26 no viable alternative at input 'appID' (SELECT distinct app_id as ['appI]...)"&gt;
  </code></pre>