title: SQL table for friends, mutual friends, friends friends etc
body: <p>I was wondering what the easiest method would be for me in the future to make queries both effective and less complex.</p>
  
  <p>Should I save a two way relationship like</p>
  
  <p>from_id=1, to_id=2
  from_id=2, to_id=1</p>
  
  <p>or just create one unique row</p>
  
  <p>from_id=1, to_id=2</p>
  
  <p>any thoughts?</p>