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PostgreSQL递归查询详解
分享PostgreSQL递归查询的实用技巧与经验,助您高效处理层级数据。 1、 PostgreSQL支持使用WITH语句创建查询中的辅助语句,这类语句被称为公共表表达式(CTE)。CTE相当于在查询执行过程中临时存在的虚拟表。当CTE涉及自身调用时,即形成递归CTE,对应的查询称为 ...
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