CREATE TABLE table_name_1 (goal_difference INT, position VARCHAR, played VARCHAR)

What is the lowest Goal Difference, when Position is '7', and when Played is greater than 30?
SELECT MIN(goal_difference) FROM table_name_1 WHERE position = 7 AND played > 30
SELECT MIN("goal_difference") FROM "table_name_1" WHERE "played" > 30 AND "position" = 7