对于 content_id = 2:
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+---
+comments: true
+difficulty: 困难
+edit_url: https://github.com/doocs/leetcode/edit/main/solution/3300-3399/3374.First%20Letter%20Capitalization%20II/README.md
+tags:
+ - 数据库
+---
+
+
+
+# [3374. 首字母大写 II](https://leetcode.cn/problems/first-letter-capitalization-ii)
+
+[English Version](/solution/3300-3399/3374.First%20Letter%20Capitalization%20II/README_EN.md)
+
+## 题目描述
+
+
+
+表：user_content
+
+
++-------------+---------+
+| Column Name | Type |
++-------------+---------+
+| content_id | int |
+| content_text| varchar |
++-------------+---------+
+content_id 是这张表的唯一主键。
+每一行包含一个不同的 ID 以及对应的文本内容。
+
+
+编写一个解决方案来根据下面的规则来转换 content_text 列中的文本：
+
+
+ - 将每个单词的 第一个字母 转换为 大写，其余字母 保持小写。
+ - 特殊处理包含特殊字符的单词：
+
+ - 对于用短横
- 连接的词语，两个部份 都应该 大写（例如，top-rated → Top-Rated）
+
+
+ - 所有其他 格式 和 空格 应保持 不变
+
+
+返回结果表同时包含原始的 content_text 以及根据上述规则修改后的文本。
+
+结果格式如下例所示。
+
+
+
+示例：
+
+
+
输入：
+
+
user_content 表：
+
+
++------------+---------------------------------+
+| content_id | content_text |
++------------+---------------------------------+
+| 1 | hello world of SQL |
+| 2 | the QUICK-brown fox |
+| 3 | modern-day DATA science |
+| 4 | web-based FRONT-end development |
++------------+---------------------------------+
+
+
+
输出：
+
+
++------------+---------------------------------+---------------------------------+
+| content_id | original_text | converted_text |
++------------+---------------------------------+---------------------------------+
+| 1 | hello world of SQL | Hello World Of Sql |
+| 2 | the QUICK-brown fox | The Quick-Brown Fox |
+| 3 | modern-day DATA science | Modern-Day Data Science |
+| 4 | web-based FRONT-end development | Web-Based Front-End Development |
++------------+---------------------------------+---------------------------------+
+
+
+
解释：
+
+
+ - 对于 content_id = 1：
+
+ - 每个单词的首字母都是大写的："Hello World Of Sql"
+
+
+ - 对于 content_id = 2：
+
+ - 包含的连字符词 "QUICK-brown" 变为 "Quick-Brown"
+ - 其它单词遵循普通的首字母大写规则
+
+
+ - 对于 content_id = 3：
+
+ - 连字符词 "modern-day" 变为 "Modern-Day"
+ - "DATA" 转换为 "Data"
+
+
+ - 对于 content_id = 4：
+
+ - 包含两个连字符词："web-based" → "Web-Based"
+ - 以及 "FRONT-end" → "Front-End"
+
+
+
+
Table: user_content
+
+
++-------------+---------+
+| Column Name | Type |
++-------------+---------+
+| content_id | int |
+| content_text| varchar |
++-------------+---------+
+content_id is the unique key for this table.
+Each row contains a unique ID and the corresponding text content.
+
+
+Write a solution to transform the text in the content_text column by applying the following rules:
+
+
+ - Convert the first letter of each word to uppercase and the remaining letters to lowercase
+ - Special handling for words containing special characters:
+
+ - For words connected with a hyphen
-, both parts should be capitalized (e.g., top-rated → Top-Rated)
+
+
+ - All other formatting and spacing should remain unchanged
+
+
+Return the result table that includes both the original content_text and the modified text following the above rules.
+
+The result format is in the following example.
+
+
+Example:
+
+
+
Input:
+
+
user_content table:
+
+
++------------+---------------------------------+
+| content_id | content_text |
++------------+---------------------------------+
+| 1 | hello world of SQL |
+| 2 | the QUICK-brown fox |
+| 3 | modern-day DATA science |
+| 4 | web-based FRONT-end development |
++------------+---------------------------------+
+
+
+
Output:
+
+
++------------+---------------------------------+---------------------------------+
+| content_id | original_text | converted_text |
++------------+---------------------------------+---------------------------------+
+| 1 | hello world of SQL | Hello World Of Sql |
+| 2 | the QUICK-brown fox | The Quick-Brown Fox |
+| 3 | modern-day DATA science | Modern-Day Data Science |
+| 4 | web-based FRONT-end development | Web-Based Front-End Development |
++------------+---------------------------------+---------------------------------+
+
+
+
Explanation:
+
+
+ - For content_id = 1:
+
+ - Each word's first letter is capitalized: "Hello World Of Sql"
+
+
+ - For content_id = 2:
+
+ - Contains the hyphenated word "QUICK-brown" which becomes "Quick-Brown"
+ - Other words follow normal capitalization rules
+
+
+ - For content_id = 3:
+
+ - Hyphenated word "modern-day" becomes "Modern-Day"
+ - "DATA" is converted to "Data"
+
+
+ - For content_id = 4:
+
+ - Contains two hyphenated words: "web-based" → "Web-Based"
+ - And "FRONT-end" → "Front-End"
+
+
+
+