title: How can I make an average of dates in MySQL?
body: <p>How can I make an average between dates in MySQL?
  I am more interested in the time values, hours and minutes.</p>
  <p>On a table with:</p>
  <pre><code>| date_one   | datetime |
  | date_two   | datetime |
  </code></pre>
  <p>Doing a query like:</p>
  <pre><code> SELECT AVG(date_one-date_two) FROM some_table WHERE some-restriction-applies;
  </code></pre>
  <hr />
  <h3>Edit:</h3>
  <p>The <code>AVG(date1-date2)</code> works but I have no clue what data it is returning.</p>