Posts Tagged With 'Relationa Algebra'

关系代数(relational Algebra)复习

Written by Zhang, Zijian in 但求日新 on 五 09 十二月 2022. Tags: Relationa Algebra, review,

关系代数与SQL语句的等效性

大部分关系代数表达式可以与sql语句等价,比如

projection: \(\pi_{\text …

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