CREATE TABLE student (stuid VARCHAR(255), major VARCHAR(255)); CREATE TABLE member_of_club (clubid VARCHAR(255), stuid VARCHAR(255)); CREATE TABLE club (clubname VARCHAR(255), clubid VARCHAR(255))
Which club has the most members majoring in "600"?
    
SQL: SELECT t1.clubname FROM club AS t1 JOIN member_of_club AS t2 ON t1.clubid = t2.clubid JOIN student AS t3 ON t2.stuid = t3.stuid WHERE t3.major = "600" GROUP BY t1.clubname ORDER BY COUNT(*) DESC LIMIT 1