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45 lines
1.2 KiB
HTML
45 lines
1.2 KiB
HTML
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<p>表：<code>Tweets</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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| tweet_id | int |
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| content | varchar |
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+----------------+---------+
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在 SQL 中，tweet_id 是这个表的主键。
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这个表包含某社交媒体 App 中所有的推文。</pre>
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<p> </p>
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<p>查询所有无效推文的编号（ID）。当推文内容中的字符数<strong>严格大于</strong> <code>15</code> 时，该推文是无效的。</p>
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<p>以<strong>任意顺序</strong>返回结果表。</p>
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<p>查询结果格式如下所示：</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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Tweets 表：
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+----------+----------------------------------+
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| tweet_id | content |
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+----------+----------------------------------+
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| 1 | Vote for Biden |
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| 2 | Let us make America great again! |
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+----------+----------------------------------+
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<strong>输出：</strong>
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+----------+
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| tweet_id |
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+----------+
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| 2 |
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+----------+
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<strong>解释：</strong>
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推文 1 的长度 length = 14。该推文是有效的。
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推文 2 的长度 length = 32。该推文是无效的。
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</pre>
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