CREATE TABLE table_name_13 (league INT, club VARCHAR, play_offs VARCHAR)

Which of the lowest leagues had Aldershot town as a club when the play-offs number was less than 0?
SELECT MIN(league) FROM table_name_13 WHERE club = "aldershot town" AND play_offs < 0
SELECT MIN("league") FROM "table_name_13" WHERE "aldershot town" = "club" AND "play_offs" < 0