title: DocumentDB - Cannot compare two paths in query
body: <p>Microsoft Azure Documents BadRequestException An invalid query has been specified with filters against path(s) that are not range-indexed. Consider adding allow scan header in the request.</p>
  
  <p>My query is: </p>
  
  <pre><code>SELECT c.id FROM users c WHERE (c.lat &lt; 29.89)
  </code></pre>
  
  <p>OVER ?? number of documents (as there are no way to get the number of document in collection with DocumentDB)</p>