title: Return the first of the month that is two full complete months back
body: <p>(slight invitation to air opinion)</p>
  
  <p>Is this the most efficient/accepted way of returning the first of the month that is two full months back:</p>
  
  <pre><code>SELECT DATEADD(mm,-2,GETDATE() - DAY(GETDATE())) + 1
  </code></pre>