title: Automatically create partition by field number every 15 minutes
body: <p>Hi i want create automatically partition based on the a filed number that is a timestamp (every 15 minutes):
  for example:</p>
  
  <p>201401010000   &lt;---- 2014 Gen 01 00:00</p>
  
  <p>201401010000 &lt; number &lt; 201401010015   &lt;---- first partition</p>
  
  <p>201401010016 &lt; number &lt; 201401010030   &lt;----second partion
  .
  .
  .</p>
  
  <p>i have seen this code for a date every month:</p>
  
  <pre><code>PARTITION BY RANGE (start_date) 
  INTERVAL(NUMTOYMINTERVAL(1, 'MONTH')) 
  (  
  PARTITION pos_data_p2 VALUES LESS THAN (TO_DATE('1-7-2007', 'DD-MM-YYYY')),
  PARTITION pos_data_p3 VALUES LESS THAN (TO_DATE('1-8-2007', 'DD-MM-YYYY')) 
  ); 
  </code></pre>
  
  <p>but for a number field every 15 minutes??</p>
  
  <p>thanks</p>