Book Image

Learn Power Query

By : Linda Foulkes, Warren Sparrow
Book Image

Learn Power Query

By: Linda Foulkes, Warren Sparrow

Overview of this book

<p>Power Query is a data connection technology that allows you to connect, combine, and refine data from multiple sources to meet your business analysis requirements. With this Power Query book, you’ll be empowered to work with a variety of data sources to create interactive reports and dashboards using Excel and Power BI. </p><p>You’ll start by learning how to access Power Query across different versions of Excel and install the Power BI engine. After you've explored Power Pivot, you’ll see why Excel users find it challenging to clean data in Power Pivot and learn how Power Query can help to tackle the problem. The book will show you how to transform data using the Query Editor and write functions in Power Query. A dedicated section will focus on functions such as IF, Index, and Modulo, and creating parameters to alter query paths in a table. You’ll also work with dashboards, get to grips with multi-dimensional reporting, and create automated reports. As you advance, you'll cover the M formula language in Power Query, delve into the basic M syntax, and write the M query language with the help of examples such as loading all library functions offline in Excel and Power BI. Finally, the book will demonstrate the difference between M and DAX and show how results are produced in M. </p><p>By the end of this book, you’ll be ready to create impressive dashboards and multi-dimensional reports in Power Query and turn data into valuable insights.</p>
Table of Contents (17 chapters)
Free Chapter
1
Section 1: Overview of Power Pivot and Power Query
6
Section 2: Power Query Data Transformations
11
Section 3: Learning M

Understanding the Power BI refresh types

It is extremely important to make sure that the data in Power BI is the most recent and accurate dataset in your Power BI report visualizations. We want to present relevant and engaging data to an audience through report dashboards. In this topic, we will discuss the refresh types, which will help you understand where Power BI might spend its time during a refresh operation.

Power BI online has a New look icon, which, when activated, will change the layout and position of items on the Power BI interface. Depending on the view selected in your online Power BI interface, you may find that the placement of the icons we referenced may be in a slightly different location than explained here. The New look icon is located on the Power BI online title bar toward the right-hand side:

Figure 7.11 – The New look icon in Power BI online

In a Power BI dataset, we have different flows of data from which reports and tiled...