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Problem_03.sql
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Problem_03.sql
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-- Problem_03.sql
--
-- The Employee table holds all employees including their managers. Every employee has an Id, and there is also a column for the manager Id.
--
-- +----+-------+--------+-----------+
-- | Id | Name | Salary | ManagerId |
-- +----+-------+--------+-----------+
-- | 1 | Joe | 70000 | 3 |
-- | 2 | Henry | 80000 | 4 |
-- | 3 | Sam | 60000 | NULL |
-- | 4 | Max | 90000 | NULL |
-- +----+-------+--------+-----------+
-- Given the Employee table, write a SQL query that finds out employees who earn more than their managers. For the above table, Joe is the only employee who earns more than his manager.
--
-- +----------+
-- | Employee |
-- +----------+
-- | Joe |
-- +----------+
SELECT employee.Name AS Employee
FROM Employee AS employee
INNER JOIN Employee AS manager ON employee.ManagerId = manager.Id
WHERE employee.Salary > manager.Salary;