181.超过经理收入的员工

解析 select a.Name as Employee from Employee as a, Employee as b where a.ManagerId = b.Id && a.Salary > b.Salary 把Employ看作2个表，a为员工表，b为经理表，且给员工也默认设置有ManagerId 通过select查询 Name 并且 as为 Employee 用where 判断  员

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