Chapter 3: Data Preparation in Power Query Editor
In the previous chapters, we discussed various layers in Power BI and went through some scenarios. By now, it should be pretty clear to you that Power BI is not only a reporting tool. Power BI is indeed a sophisticated all-round business intelligence (BI) technology, with the flexibility to be used as a self-service BI tool that supports many BI aspects such as extract, transform, and load (ETL) processes, data modeling, data analysis, and data visualization. Power BI, as a powerful BI tool, is improving every day, which is fantastic. The Power BI development team at Microsoft is constantly bringing new ideas to this technology to make it even more powerful. One of the BI areas that Power BI is great for is taking care of ETL activities in the data preparation layer, with the so-called Power Query Editor in Power BI. Power Query Editor is the dedicated tool in Power BI to write Power Query expressions, and is also available in Excel...