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<p>表:&nbsp;<code>Seat</code></p>
<pre>
+-------------+---------+
| Column Name | Type |
+-------------+---------+
| id | int |
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| student | varchar |
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+-------------+---------+
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<code>id</code> 是该表的主键(唯一值)列。
该表的每一行都表示学生的姓名和 ID。
id 是一个连续的增量。
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</pre>
<p>&nbsp;</p>
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<p>编写解决方案来交换每两个连续的学生的座位号。如果学生的数量是奇数则最后一个学生的id不交换。</p>
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<p><code>id</code> <strong>升序</strong> 返回结果表。</p>
<p>查询结果格式如下所示。</p>
<p>&nbsp;</p>
<p><strong>示例 1:</strong></p>
<pre>
<strong>输入:</strong>
Seat 表:
+----+---------+
| id | student |
+----+---------+
| 1 | Abbot |
| 2 | Doris |
| 3 | Emerson |
| 4 | Green |
| 5 | Jeames |
+----+---------+
<strong>输出:</strong>
+----+---------+
| id | student |
+----+---------+
| 1 | Doris |
| 2 | Abbot |
| 3 | Green |
| 4 | Emerson |
| 5 | Jeames |
+----+---------+
<strong>解释:
</strong>请注意,如果学生人数为奇数,则不需要更换最后一名学生的座位。</pre>