select distinct xnum from teacher where salary＞=all(select salary from teacher where xnum="02")与如上语句等价的sql语句是

以下是与给定语句等价的 SQL 语句：

SELECT DISTINCT t1.xnum
FROM teacher t1
WHERE t1.salary >= (
  SELECT MAX(t2.salary)
  FROM teacher t2
  WHERE t2.xnum = "02"
);