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Data Cleaning with Power BI

Data Cleaning with Power BI

By : Frazer
5 (7)
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Data Cleaning with Power BI

Data Cleaning with Power BI

5 (7)
By: Frazer

Overview of this book

Microsoft Power BI offers a range of powerful data cleaning and preparation options through tools such as DAX, Power Query, and the M language. However, despite its user-friendly interface, mastering it can be challenging. Whether you're a seasoned analyst or a novice exploring the potential of Power BI, this comprehensive guide equips you with techniques to transform raw data into a reliable foundation for insightful analysis and visualization. This book serves as a comprehensive guide to data cleaning, starting with data quality, common data challenges, and best practices for handling data. You’ll learn how to import and clean data with Query Editor and transform data using the M query language. As you advance, you’ll explore Power BI’s data modeling capabilities for efficient cleaning and establishing relationships. Later chapters cover best practices for using Power Automate for data cleaning and task automation. Finally, you’ll discover how OpenAI and ChatGPT can make data cleaning in Power BI easier. By the end of the book, you will have a comprehensive understanding of data cleaning concepts, techniques, and how to use Power BI and its tools for effective data preparation.
Table of Contents (23 chapters)
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Part 1 – Introduction and Fundamentals
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Part 2 – Data Import and Query Editor
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Part 3 – Advanced Data Cleaning and Optimizations
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Chapter 10: Creating Custom Functions in Power Query
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Part 4 – Paginated Reports, Automations, and OpenAI
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Index
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Using Query Editor versus DAX for transformation

In Power BI, Power Query and DAX (short for Data Analysis Expressions) are both powerful tools for data transformation, but they serve different purposes and are used at different stages of the data preparation process. There’s a simple workflow we can reference when deciding on which tool to use for your transformations. Let’s review them in detail.

Power Query Editor

Power Query Editor in Microsoft Power BI is a powerful data transformation tool designed for cleaning and refining data before analysis. It features an intuitive interface, allowing users to connect to various data sources, import raw data, and perform diverse transformation tasks such as filtering, sorting, and merging. The editor operates step by step, enhancing transparency and facilitating error identification. Noteworthy is its ability to record transformations as reproducible steps, and it supports a formula language called M for advanced scripting...

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