title: db2 - Get Week of the Month
body: <p>Hello guys I need know the number of the week of a month</p>
  
  <p>For example:</p>
  
  <pre><code>Date       | WeekOfTheMonth
  2015-04-15 | 3
  2015-03-01 | 1
  2015-01-08 | 2
  </code></pre>
  
  <p>Beacuse in docs only see <strong>Week of the year</strong></p>
  
  <p>Thanks</p>