title: sqlalchemy load_only columns and rename the column name using label
body: <p>I am trying to use the similar query mentioned below:</p>
  
  <p><code>session.query(User,Address).join(User.addresses).options(Load(User).load_only("name", "fullname"),Load(Address).load_only("email_addres"))</code></p>
  
  <p>I want to change the column names i.e., name to Name and email_address to EmailId
  I got to know that I can use .label() in SqlAlchemy. But my question is: Can I use the label() in the above query ie., along with load_only(). If so, then how? if not, then what I need to use? </p>
  
  <p>Please help me.</p>