title: Alias 2 columns to the same name
body: <p>I am wondering if it is possible to alias 2 columns from 2 separate tables to the same name.</p>
  
  <p>For example i want to join an email table with a user table and admin table and let the respective 'name' columns be combined in the same column.</p>
  
  <pre><code>Email Table: Email ID | Email Address
  
  User Table: Username| Email ID
  
  Admin Table: Username| Email ID
  
  Result:
  
  Username | Email Address
  </code></pre>