title: Connect to Sphinx through mysql protocol result in "No database selected" error
body: <p>I tried connecting to a running sphinx instance and it connects normal:</p>
  
  <pre><code>XXX@XXX:~$ mysql -P 9306
  Welcome to the MySQL monitor.  Commands end with ; or \g.
  Your MySQL connection id is 52
  Server version: 5.5.24-0ubuntu0.12.04.1 (Ubuntu)
  
  Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
  
  Oracle is a registered trademark of Oracle Corporation and/or its
  affiliates. Other names may be trademarks of their respective
  owners.
  
  Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
  
  mysql&gt; 
  </code></pre>
  
  <p>But no SELECT could be executed. I got "database not selected" error. Then I tried to kill sphinxd and after killing it I could not connect to port 9306, so I assumed, that I connected normaly...
  Why can't I do select data from index? I confirmed many times and the index is present and is searchable.</p>