title: Is there a way to check if the min and max values of a table are equal to each other in SQL/Postgres?
body: <p>Say a column is:</p>
  
  <pre><code>Price  
  $3.00  
  $3.00
  </code></pre>
  
  <p>The min and max would be equal. Is there a way to check for that in the WHERE clause?</p>