title: CreateSqlQuery on entity with formula property
body: <p>When I try to query a table using CreateSqlQuery  and convert it to an entity containing formula property, I get the below Adoexception.</p>
  
  <p>"Value cannot be null.
  Parameter name: fieldName"</p>
  
  <p>In the first place is it possible to use the createsqlquery on entity that has formula mapping ? </p>