DATETIME - DATETIME in HH:MM:SS format from Informix
<p>I have 2 fields (<code>login,logout</code>) INTEGER type with the UNIX time, but when I make a subtraction (<code>logout-login</code>) using DBINFO it returns: <code>0 05:50:23</code>, but I need that value <em>without</em> the first number (zero in this case).</p>

<p>I am using Informix 11.</p>

<p>This is the expression I use:</p>

<pre><code>DBINFO('utc_to_datetime', logout) -
DBINFO('utc_to_datetime', login)
</code></pre>

<p>The result:</p>

<blockquote>
  <p>0 05:50:23</p>
</blockquote>

<p>How can I get rid of the leading zero?</p>