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A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...

本内容遵循CC 4.0 BY-SA版权协议 这些需求如果用传统的 GROUP BY 或子查询来实现，往往代码复杂、效率低下。而 窗口函数（Window Function） 正是为解决这类“分组内计算”问题而生的强大工具！