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rgb-24bit / blog

My blog by emacs org-mode
https://rgb-24bit.github.io/blog/
MIT License
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blog/2019/sql-relational-algebra #5

Open utterances-bot opened 10 months ago

utterances-bot commented 10 months ago

SQL 与关系代数

https://rgb-24bit.github.io/blog/2019/sql-relational-algebra.html

youth7 commented 10 months ago

关系代数可以进行等价变换来优化，因此SQL也可以等价变换来进行优化，参考：https://cloud.tencent.com/developer/article/1852469