title: How to make Joomla Form Field SQL Empty Value at start
body: <p>I'm trying to make a drop down menu for the Country field in Joomla User profile.</p>
  
  <pre><code>&lt;field name="countries" type="sql" label="Country" query="SELECT id, country_name FROM #__countries" key_field="id" value_field="country_name" required="true"/&gt;
  </code></pre>
  
  <p>How can i make this 'Empty Value' at start and let the user to select? is it possible?</p>
  
  <p>Thank you</p>