SELECT DISTINCT 系号 FROM 教师 WHERE工资>= (SELECT MAX(工资) FROM 教师 WHERE 系号="02");
SELECT DISTINCT 系号 FROM 教师 WHERE 工资>= (SELECT MIN(工资) FROM 教师 WHERE 系号="02");
SELECT DISTINCT 系号 FROM 教师 WHERE 工资>= ANY(SELECT 工资 FROM 教师 WHERE 系号="02");
SELECT DISTINCT 系号 FROM 教师 WHERE 工资>= SOME (SELECT 工资 FROM 教师 WHERE 系号="02");