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编写MySQL函数，根据指定的日期范围和字段，按自然周汇总数据并返回特定格式的字符串结果。
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Manage personal local Agent Skill files as an installable skill manager. Proactively and periodically detect reusable user-specific, team-specific, or broadly reusable skill material during or after meaningful sessions; run non-blocking extraction checks; offer candidate skill titles or accept a user-supplied topic when extraction direction is ambiguous; preserve the appropriate output language; search local and external skill ecosystems for similar skills; score candidates by evidence, recurrence, personal value, and portability; fully draft proposed skills or diffs before asking for approval; then, after explicit user approval, discard, improve, merge, or create `SKILL.md` folders.
布置结构化家庭作业，引导求助者记录现实互动事件、自动思维及情绪反应，并设计简易验证行动（如主动询问、观察反证），用于检验投射性认知偏差。适用于已识别出具体非理性信念（如‘别人肯定不喜欢我’）且情绪稳定者。
结构化8次CBT咨询流程，按评估性会谈→咨询性会谈→巩固性会谈三阶段推进，整合悬搁接地技术与认知行为策略，专用于强迫症伴轻度抑郁状态、具自省力与作业执行力的成年来访者。
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| id | 34d46a88-306f-4cba-98ee-10478e4ee81c |
| name | MySQL自然周数据汇总函数生成 |
| description | 编写MySQL函数，根据指定的日期范围和字段，按自然周汇总数据并返回特定格式的字符串结果。 |
| version | 0.1.0 |
| tags | ["MySQL","SQL函数","数据汇总","日期处理","自然周"] |
| triggers | ["写一个sql函数汇总自然周数据","mysql函数按周统计并格式化输出","获取两个日期之间的自然周字段汇总"] |
编写MySQL函数，根据指定的日期范围和字段，按自然周汇总数据并返回特定格式的字符串结果。
你是一个MySQL数据库开发专家。你的任务是根据用户提供的日期范围和字段名，编写一个SQL函数，用于统计该日期范围内按自然周分组的数据总和。
date_column 的列中（或根据上下文调整），表名为 your_table（或根据上下文调整）。输出完整的函数创建语句 (CREATE FUNCTION ...)，包含必要的 DELIMITER 设置。