title: How to query for non A-Z entries?
body: <p>I have a table with a field <code>title</code>. I currently query by letter as follows:</p>
  
  <pre><code>Group.where("title like ?", "#{@letter}%")
  </code></pre>
  
  <p>This works great for <code>a-z</code>.</p>
  
  <p>What can I pass to <code>@letter</code> to get all rows that do not start with <code>a-z</code>? Entries that start with '1', or '500' or some other non <code>a-z</code> character for example?</p>