title: Select based on a time-of-day
body: <p>I have an Oracle DATE column with, for example, these values:</p>
  
  <pre><code>      RUN_DATE
  -------------------
  2012-06-09 13:15:00
  2012-06-10 14:28:00
  2012-06-11 12:20:00
  2012-06-12 13:14:00
  2012-06-13 11:50:00
  </code></pre>
  
  <p>I want to select those values that occurred within a hour of 13:00.
  For the data above that would be the 1st, 3rd, and 4th rows.</p>
  
  <p>Thank you</p>