My hands-on SQL practice tracking my progress through a structured Data Analytics Roadmap, overing Basics & Tables, Selecting & Filtering, Joins, Aggregations, Subqueries, Window Functions, and ...
create database north_wind; -- 我们一会儿要做的34个题用的数据源是从Git上下载的, 微软的北风项目的源数据. -- 2. 切换数据库. select ...
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