title: How to check if a column is empty or null using SQL query select statement?
body: <p>How do I check if a column is empty or null using a SQL select statement?</p>
  
  <p>For instance, if I want to check:</p>
  
  <pre><code>select * from UserProfile WHERE PropertydefinitionID in (40, 53) and PropertyValue is null or empty
  </code></pre>