title: Retrieve Unique Values and Counts For Each
body: <p>Is there a simple way to retrieve a list of all unique values in a column, along with how many times that value appeared?</p>
  
  <p>Example dataset:</p>
  
  <pre><code>A
  A
  A
  B
  B
  C
  </code></pre>
  
  <p>... Would return:</p>
  
  <pre><code>A  |  3
  B  |  2
  C  |  1
  </code></pre>