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84 lines
2.3 KiB
HTML
84 lines
2.3 KiB
HTML
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<p>表：<code>transactions</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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| transaction_id | int |
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| amount | int |
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| transaction_date | date |
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+------------------+------+
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transactions_id 列唯一标识了表中的每一行。
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这张表的每一行包含交易 id，金额总和和交易日期。
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</pre>
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<p>编写一个解决方案来查找每天 <strong>奇数</strong> 交易金额和 <strong>偶数</strong> 交易金额的 <strong>总和</strong>。如果某天没有奇数或偶数交易，显示为 <code>0</code>。</p>
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<p>返回结果表以 <code>transaction_date</code> <strong>升序</strong> 排序。</p>
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<p>结果格式如下所示。</p>
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<p> </p>
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<p><strong class="example">示例：</strong></p>
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<div class="example-block">
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<p><b>输入：</b></p>
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<p><code>transactions</code> 表：</p>
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<pre class="example-io">
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+----------------+--------+------------------+
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| transaction_id | amount | transaction_date |
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+----------------+--------+------------------+
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| 1 | 150 | 2024-07-01 |
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| 2 | 200 | 2024-07-01 |
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| 3 | 75 | 2024-07-01 |
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| 4 | 300 | 2024-07-02 |
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| 5 | 50 | 2024-07-02 |
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| 6 | 120 | 2024-07-03 |
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+----------------+--------+------------------+
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</pre>
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<p><strong>输出：</strong></p>
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<pre class="example-io">
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+------------------+---------+----------+
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| transaction_date | odd_sum | even_sum |
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+------------------+---------+----------+
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| 2024-07-01 | 75 | 350 |
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| 2024-07-02 | 0 | 350 |
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| 2024-07-03 | 0 | 120 |
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+------------------+---------+----------+
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</pre>
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<p><strong>解释：</strong></p>
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<ul>
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<li>对于交易日期：
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<ul>
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<li>2024-07-01:
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<ul>
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<li>奇数交易金额总和：75</li>
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<li>偶数交易金额总和：150 + 200 = 350</li>
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</ul>
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</li>
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<li>2024-07-02:
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<ul>
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<li>奇数交易金额总和：0</li>
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<li>偶数交易金额总和：300 + 50 = 350</li>
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</ul>
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</li>
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<li>2024-07-03:
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<ul>
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<li>奇数交易金额总和：0</li>
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<li>偶数交易金额总和：120</li>
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</ul>
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</li>
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</ul>
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</li>
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</ul>
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<p><b>注意：</b>输出表以 <code>transaction_date</code> 升序排序。</p>
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</div>
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