text: UPDATE books
  SET author_id = 1
  WHERE books.id = 1;
  -- Sets foreign key to the primary key of author
  
  UPDATE books
  SET author_id = 2
  WHERE books.id = 2;
  
  UPDATE books
  SET author_id = 3
  WHERE books.id = 3;
  
  UPDATE books
  SET author_id = 4
  WHERE books.id = 4;
  
  UPDATE books
  SET author_id = 5
  WHERE books.id = 5;
  
  
  -- ("Name of the Wind", 325);
  -- ("LOTR", 425);
  -- ("Harry Potter", 525);
  -- ("Goldfinch", 227);
  -- ("Into the Woods", 187);