CREATE TABLE table_name_21 (losses INT, points VARCHAR, goals_against VARCHAR, goal_difference VARCHAR)

How many losses when goals against are more than 17, goal difference is more than 2 and points are more than 5?
SELECT AVG(losses) FROM table_name_21 WHERE goals_against > 17 AND goal_difference < 2 AND points > 5
SELECT AVG("losses") FROM "table_name_21" WHERE "goal_difference" < 2 AND "goals_against" > 17 AND "points" > 5