Power BI 微课堂 通过专业的功能讲解与数据实践,带你从零开始快速入门 Power BI,掌握数据可视化知识,提升业务分析技能! 上一节课,我们学习了“数据转换”主题课程:用 Power Query 实现多表合并,学习了“合并查询”与“追加查询”的功能区别,并通过这两个方式实现想要的表合并效果。 今天,我们来学习:用 Power Query ...
Reading this during the day? Then you've caught me testing gear and editing reviews of laptops, desktop PCs, and tons of other personal tech. (Reading this at night? Then I’m probably dreaming ...
A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages ...