33 lines
873 B
Markdown
33 lines
873 B
Markdown
## 题目:
|
||
|
||
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。
|
||
```
|
||
+----+-------+--------+-----------+
|
||
| Id | Name | Salary | ManagerId |
|
||
+----+-------+--------+-----------+
|
||
| 1 | Joe | 70000 | 3 |
|
||
| 2 | Henry | 80000 | 4 |
|
||
| 3 | Sam | 60000 | NULL |
|
||
| 4 | Max | 90000 | NULL |
|
||
+----+-------+--------+-----------+
|
||
|
||
```
|
||
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
|
||
超过他的经理的员工。
|
||
|
||
```
|
||
+----------+
|
||
| Employee |
|
||
+----------+
|
||
| Joe |
|
||
+----------+
|
||
```
|
||
|
||
## 答案
|
||
|
||
```sql
|
||
select a.Name as Employee
|
||
from Employee a, (select Salary,Id from Employee) b
|
||
where a.ManagerId=b.Id and a.Salary > b.Salary
|
||
```
|