比较好的网上的sqlserver读书笔记
https://leongfeng.github.io/2016/12/21/sqlserver-tsql-fundamentals-learning-01/
https://leongfeng.github.io/2016/12/21/sqlserver-tsql-fundamentals-learning-02/
https://leongfeng.github.io/2016/12/22/sqlserver-tsql-fundamentals-learning-03/