title: Generate sequence numbers for a range and decrementer
body: <p>I have a table like below and It has start range and end range columns.</p>
  
  <pre><code>+------+----------+--------+--+
  |  f1  | start_r  | end_r  |
  +------+----------+--------+--+
  | ABC  | 31       | 29     |
  +------+----------+--------+--+
  </code></pre>
  
  <p>I need to use the values in start_r and end_r and produce the output like below (generate the sequence number between the start and end range decremented by 1)</p>
  
  <pre><code> f1   seq_no
  
   ABC   31
   ABC   30
   ABC   29
  </code></pre>
  
  <p>I just need an approach to to generate the values .. is there any buitin function in hive for this ?</p>