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rqx110/1.txt

Created March 29, 2018 00:53
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采用左右值编码来存储无限分级树形结构的数据库表设计
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1.txt
查看此文：https://www.cnblogs.com/yongzhi/articles/1187149.html
同时看评论的图片帮助理解。
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rqx110 commented Mar 29, 2018

tim 20180329085104

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