title: check if fields of a sqlserver table are empty/full in a computed field
body: <p>i need to add a computed field in a sqlserver table that shows me if the other fields of the table are empty or full (all, some of them, none)</p>
  
  <p>the field should contain:</p>
  
  <pre><code>0=all the fields are empty(null)
  1=almost one field has been filled
  2=all fields contains something
  </code></pre>
  
  <p>What is the most efficent way to achieve it?</p>