title: How to calculate months between in hive?
body: <p>Is there a way to calculate months between two dates based on month and year</p>
  
  <p>for eg
  <code>2016-01-01</code> <code>2017-01-22</code></p>
  
  <p>I need <code>12</code> to be returned in integer format in hive.</p>