solution.md

# 第N高的薪水

<p>编写一个 SQL 查询，获取 <code>Employee</code> 表中第&nbsp;<em>n&nbsp;</em>高的薪水（Salary）。</p>

<pre>+----+--------+
| Id | Salary |
+----+--------+
| 1  | 100    |
| 2  | 200    |
| 3  | 300    |
+----+--------+
</pre>

<p>例如上述&nbsp;<code>Employee</code>&nbsp;表，<em>n = 2&nbsp;</em>时，应返回第二高的薪水&nbsp;<code>200</code>。如果不存在第&nbsp;<em>n&nbsp;</em>高的薪水，那么查询应返回&nbsp;<code>null</code>。</p>

<pre>+------------------------+
| getNthHighestSalary(2) |
+------------------------+
| 200                    |
+------------------------+
</pre>


## template

```python


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## 答案

```python

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## 选项

### A

```python

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### B

```python

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### C

```python

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