sql 执行顺序

 

 

 

 

https://mp.weixin.qq.com/s?__biz=MjM5NzEyMzg4MA==&mid=2649468111&idx=6&sn=a87a37d675039f92dfd1df76a65c8a5f&chksm=bec1ce8889b6479ef314f7ea1aa4204eb9b1d4037847bf3ef8bdffd7a5f2f96ad34095bc4996&scene=27

 

https://zhuanlan.zhihu.com/p/389253193

 

https://blog.csdn.net/qianzhitu/article/details/94299425