Question: Can you find me the names of all the swimmers who have both "win" and "loss" results in the record?
SQL: SELECT t1.name FROM swimmer AS t1 JOIN record AS t2 ON t1.id   =   t2.swimmer_id WHERE RESULT   =   'Win' INTERSECT SELECT t1.name FROM swimmer AS t1 JOIN record AS t2 ON t1.id   =   t2.swimmer_id WHERE RESULT   =   'Loss'