text: ALTER TABLE player
  ADD gm_id INTEGER;
  
  ALTER TABLE player
  ADD owner_id INTEGER;
  
  ALTER TABLE ship
  ADD gm_id INTEGER;
  
  ALTER TABLE ship
  ADD owner_id INTEGER;
  
  ALTER TABLE place
  ADD gm_id INTEGER;
  
  ALTER TABLE place
  ADD owner_id INTEGER;
  
  ALTER TABLE planet
  ADD gm_id INTEGER;
  
  ALTER TABLE planet
  ADD owner_id INTEGER;