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46 lines
928 B
HTML
46 lines
928 B
HTML
<p>表：<code>Logs</code></p>
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<pre>
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+-------------+---------+
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| Column Name | Type |
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+-------------+---------+
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| id | int |
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| num | varchar |
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+-------------+---------+
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id 是这个表的主键。</pre>
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<p> </p>
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<p>编写一个 SQL 查询，查找所有至少连续出现三次的数字。</p>
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<p>返回的结果表中的数据可以按 <strong>任意顺序</strong> 排列。</p>
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<p>查询结果格式如下面的例子所示：</p>
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<p> </p>
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<p><strong>示例 1:</strong></p>
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<pre>
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<strong>输入：</strong>
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Logs 表：
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+----+-----+
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| Id | Num |
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+----+-----+
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| 1 | 1 |
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| 2 | 1 |
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| 3 | 1 |
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| 4 | 2 |
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| 5 | 1 |
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| 6 | 2 |
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| 7 | 2 |
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+----+-----+
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<strong>输出：</strong>
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Result 表：
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+-----------------+
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| ConsecutiveNums |
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+-----------------+
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| 1 |
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+-----------------+
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<strong>解释：</strong>1 是唯一连续出现至少三次的数字。</pre>
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