一套基于 MySQL 的 SQL 语句练习记录项目，包含建库建表、测试数据、基础查询、聚合统计、JOIN 连接查询、子查询、事务、视图、索引等练习内容，并给每条 SQL 运行结果展示了截图，方便系统学习和复盘。
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May 27, 2026 - HTML
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join-query
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