title: Find last order limit
body: <pre><code>&lt;% Specimen.find(:all, :order =&gt; 'distribution_sheet_id', :limit =&gt; 10).each do |df| %&gt;
    &lt;%= df.id %&gt;
  &lt;% end %&gt;
  </code></pre>
  
  <p>This gives this query: </p>
  
  <pre><code>SELECT * FROM "specimens" ORDER BY distribution_sheet_id LIMIT 10
  </code></pre>
  
  <p>I need this: </p>
  
  <pre><code>SELECT * FROM "specimens" ORDER BY distribution_sheet_id DESC LIMIT 10
  </code></pre>
  
  <p>I'm using Rails &lt; 3. Any help please?</p>