title: update table by concatenating a string and current value
body: <p>Need to update table <code>banners</code> so that column <code>src</code> instead of <code>something.jpg</code> would be <code>banners/something.jpg</code>;  </p>
  
  <pre><code>update banners set src = 'banners/' . currentValue
  </code></pre>
  
  <p>Any help?</p>