title: Get second between TIMESTAMP field and CURRENT_TIMESTAMP
body: <p>I wand to know, seconds between to date-time</p>
  
  <p>One of my field is <code>CreateDate(it's Timestamp)</code> and other is <code>CURRENT_TIMESTAMP(current date)</code></p>
  
  <p>So what I do is:</p>
  
  <pre><code>((CreateDate)- CURRENT_TIMESTAMP) AS Result_Seconds
  </code></pre>
  
  <p>But I got this error:</p>
  
  <blockquote>
    <p>Arithmetic overflow error converting expression to data type datetime.</p>
  </blockquote>