title: pad varchar numbers with 0s in db2
body: <p>Is there a way to pad 0s before numbers stored as VARCHAR in DB2?</p>
  
  <p>Like this:</p>
  
  <pre><code>some_column     result
  -----------     ------
  12          ==&gt;  00012
  123         ==&gt;  00123
  6454        ==&gt;  06454
  </code></pre>