title: GROUP BY Issue - Grouping per month
body: <pre><code>SELECT 
     Sum(Earning) AS Amount, 
     MONTH(DateCreated) AS Month 
  FROM 
     TheTable 
  WHERE 
     DateCreated 
  BETWEEN 
     @DateFrom AND @DateTo 
  GROUP BY **???**
  </code></pre>
  
  <p>I want to display Earning per month and it should not group the month if it appears next year again e.g. </p>
  
  <p><strong>May</strong>, Jun, Jul, Aug, Sep, Oct, Nov, Dec, Jan, Feb, Mar, Apr, <strong>May</strong>, June etc. </p>
  
  <p>Meaning if the year differs it should continue the list without grouping e.g. May 2015 and May 2016 altogether. </p>
  
  <p>Thank you</p>