[SQL 문제 풀이] Employees Earning More Than Their Managers (관리자보다 더 많은 수익을 올리는 직원)

Can you solve this real interview question? Employees Earning More Than Their Managers - Table: Employee +-------------+---------+ | Column Name | Type | +-------------+---------+ | id | int | | name | varchar | | salary | int | | managerId | int | +-------------+---------+ id is the primary key (column with unique values) for this table. Each row of this table indicates the ID of an employee, their name, salary, and the ID of their manager.   Write a solution to find the employees who earn more than their managers. Return the result table in any order. The result format is in the following example.   Example 1: Input: Employee table: +----+-------+--------+-----------+ | id | name | salary | managerId | +----+-------+--------+-----------+ | 1 | Joe | 70000 | 3 | | 2 | Henry | 80000 | 4 | | 3 | Sam | 60000 | Null | | 4 | Max | 90000 | Null | +----+-------+--------+-----------+ Output: +----------+ | Employee | +----------+ | Joe | +----------+ Explanation: Joe is the only employee who earns more than his manager.