33 lines
873 B
Markdown
33 lines
873 B
Markdown
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## 题目:
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Employee 表包含所有员工，他们的经理也属于员工。每个员工都有一个 Id，此外还有一列对应员工的经理的 Id。
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```
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+----+-------+--------+-----------+
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| Id | Name | Salary | ManagerId |
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+----+-------+--------+-----------+
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| 1 | Joe | 70000 | 3 |
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| 2 | Henry | 80000 | 4 |
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| 3 | Sam | 60000 | NULL |
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| 4 | Max | 90000 | NULL |
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+----+-------+--------+-----------+
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```
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给定 Employee 表，编写一个 SQL 查询，该查询可以获取收入超过他们经理的员工的姓名。在上面的表格中，Joe 是唯一一个收入
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超过他的经理的员工。
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```
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+----------+
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| Employee |
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+----------+
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| Joe |
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+----------+
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```
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## 答案
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```sql
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select a.Name as Employee
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from Employee a, (select Salary,Id from Employee) b
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where a.ManagerId=b.Id and a.Salary > b.Salary
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```
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