2022-11-27：超过经理收入的员工。编写一个SQL查询来查找收入比经理高的员工。以下数据的结果输出是Joe，因为Joe是唯一挣得比经理多的雇员。 DROP

DROP TABLE IF EXISTS `employee`;
CREATE TABLE `employee` (
  `id` int(11) NOT NULL,
  `name` varchar(255) NOT NULL,
  `salary` int(11) NOT NULL,
  `manager_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

INSERT INTO `employee` VALUES ('1', 'Joe', '70000', '3');
INSERT INTO `employee` VALUES ('2', 'Henry', '80000', '4');
INSERT INTO `employee` VALUES ('3', 'Sam', '60000', null);
INSERT INTO `employee` VALUES ('4', 'Max', '90000', null);

SELECT
     a.NAME AS employee
FROM employee AS a JOIN employee AS b
     ON a.manager_id = b.id
     AND a.salary > b.salary