title: Bulk updating data in DocumentDB
body: <p>I have a desire to add a property with a default value to a set of documents that I retrieve via a SELECT query if they contain no value.</p>
  
  <p>I was thinking of this in two parts:</p>
  
  <ol>
  <li>SELECT * FROM c article WHERE article.details.locale = 'en-us'</li>
  </ol>
  
  <p>I'd like to find all articles where article.details.x <strong>does not exist.</strong></p>
  
  <ol start="2">
  <li>Add the property, article.details.x = true</li>
  </ol>
  
  <p>I was hoping this EXEC command could be supported via the Azure Portal so I don't have to create a migration tool to run this command once but I couldn't find this option in the portal. Is this possible? </p>