title: Comparing Float Column with another Float Column
body: <p>let's say I have 2 columns, a and b.</p>
  
  <pre><code> a      |      b
   1             2
   5             2
   4             3
   2             1
   2             1
  </code></pre>
  
  <p>I would like to compare 'a' and 'b' so that if the values in 'a' is more than value in 'b' then display those rows.</p>
  
  <p>My desire outcome would be this:</p>
  
  <pre><code> a      |      b
   5             2
   4             3
   2             1
  </code></pre>
  
  <p>Thanks for the help guys!</p>