Que jogou tem gols contra maiores de 34, e ganha menos de 12, e gols para menores de 50, e perdas maiores de 15?
CREATE TABLE table_name_39 (played INTEGER, losses VARCHAR, goals_for VARCHAR, goals_against VARCHAR, wins VARCHAR)
SELECT AVG(played) FROM table_name_39 WHERE goals_against > 34 AND wins < 12 AND goals_for < 50 AND losses > 15