title: PHP SQL Order by date and id
body: <p>This is my PHP SQL query:</p>
  
  <pre><code>SELECT * FROM Buchungen 
  WHERE Buchungen.konto = '".$value_entry."'
  ORDER BY datum DESC
  </code></pre>
  
  <p>Is it possible to order this by the <code>newest id</code> for each date? When i have 3 entries, from 18.11.2013, i want the newest entry on top. The latest entry has the largest id from this date. I don't want to add an time column in my sql table.</p>