title: Create computed column with string in formula
body: <p>I want to create a computed column in SQL SERVER and set the formula to this</p>
  
  <pre><code>([Category] +  '.aspx?ID=' + [Post_ID])
  </code></pre>
  
  <p>Not working though......what am i missing?</p>
  
  <p>Category and Post_ID are current columns in the table</p>