title: Hive Strange code syntax test.`(submit_date)?+.+
body: <p>I have a HQL(Hive Query)  file which has code like</p>
  
  <pre><code>  select * ,'(submit_date)?+.+'  from test
  </code></pre>
  
  <p>Table test has several other filed after submit date all of which are returned in the output of this query,  but i couldn't understand how this thing works. ?</p>
  
  <p>does any1 have any idea, i couldn't find any Doc related to this syntax</p>