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Andrea Janicijevic - Power Query Cookbook: Use effective and powerful queries in Power BI Desktop and Dataflows to prepare and transform your data

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Andrea Janicijevic Power Query Cookbook: Use effective and powerful queries in Power BI Desktop and Dataflows to prepare and transform your data
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Leverage your source data from hundreds of different connections, perform millions of different transformations, and easily manage highly complex data lifecycles with Power Query

Key Features
  • Collect, combine, and transform data using Power Querys data connectivity and data preparation features
  • Overcome the problems faced while accessing data from multiple sources and reshape it to meet your business requirements
  • Explore how the M language can be used to write your own customized solutions
Book Description

Power Query is a data preparation tool that enables data engineers and business users to connect, reshape, enrich, and transform their data to facilitate relevant business insights and analysis. With Power Querys wide range of features, you can perform no-code transformations and complex M code functions at the same time to get the most out of your data.

This Power Query book will help you to connect to data sources, achieve intuitive transformations, and get to grips with preparation practices. Starting with a general overview of Power Query and what it can do, the book advances to cover more complex topics such as M code and performance optimization. Youll learn how to extend these capabilities by gradually stepping away from the Power Query GUI and into the M programming language. Additionally, the book also shows you how to use Power Query Online within Power BI Dataflows.

By the end of the book, youll be able to leverage your source data, understand your data better, and enrich it with a full stack of no-code and custom features that youll learn to design by yourself for your business requirements.

What you will learn
  • Understand how to use Power Query to connect and explore data
  • Explore ways to reshape and enrich data
  • Discover the potential of Power Query across the Microsoft platform
  • Build complex and custom transformations
  • Use M code to write new queries against data sources
  • Use the Power Query Online tool within Power BI Dataflows
  • Implement best practices such as reusing dataflows, optimizing expanding table operations, and field mapping
Who this book is for

This book is for data analysts, BI developers, data engineers, and anyone looking for a desk reference guide to learn how Power Query can be used with different Microsoft products to handle data of varying complexity. Beginner-level knowledge of Power BI and the M Language will help you to get the best out of this book.

Table of Contents
  1. Getting Started with Power Query
  2. Connecting to Fetch Data
  3. Data Exploration in Power Query
  4. Reshaping Your Data
  5. Combining Queries for Efficiency
  6. Optimizing Power Query Performance
  7. Leveraging the M Language
  8. Adding Value to Your Data
  9. Performance Tuning with Power BI Dataflows
  10. Implementing Query Diagnostics

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Power Query Cookbook Use effective and powerful queries in Power BI Desktop and - photo 1
Power Query Cookbook

Use effective and powerful queries in Power BI Desktop and Dataflows to prepare and transform your data

Andrea Janicijevic

BIRMINGHAMMUMBAI Power Query Cookbook Copyright 2021 Packt Publishing All - photo 2

BIRMINGHAMMUMBAI

Power Query Cookbook

Copyright 2021 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author(s), nor Packt Publishing or its dealers and distributors, will be held liable for any damages caused or alleged to have been caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

Group Product Manager: Kunal Parikh

Publishing Product Manager: Ali Abidi

Senior Editor: Roshan Kumar

Content Development Editor: Tazeen Shaikh

Technical Editor: Rahul Limbachiya

Copy Editor: Safis Editing

Project Coordinator: Aparna Ravikumar Nair

Proofreader: Safis Editing

Indexer: Subalakshmi Govindhan

Production Designer: Prashant Ghare

First published: October 2021

Production reference: 1070921

Published by Packt Publishing Ltd.

Livery Place

35 Livery Street

Birmingham

B3 2PB, UK.

ISBN 978-1-80056-948-5

www.packt.com

To my family, who have always supported me during my studies and my professional experience and have been key in me becoming the woman I am today. To my colleague, Patrik Borosch, who introduced me to this opportunity, and to my manager, Zoran Draganic, who gave me the freedom to pursue this exciting journey.

Andrea Janicijevic

Contributors
About the author

Andrea Janicijevic is a cloud solution architect and works in the world of analytics and business intelligence, constantly expanding her knowledge in the field of data. From the outset, she has been working on analytics platforms, helping clients to better adopt cloud technology across a wide range of industries and company sizes.

She studied economics and management of innovation and technology at Bocconi University in Milan and during her studies, she started working at Microsoft in 2018. She began working with the Microsoft analytics platform, including Power BI, becoming a trusted technical advisor for business and technical users. She later started collaborating with Packt, accepting the challenge of sharing her experience with Power Query.

About the reviewers

Patrik Borosch is a cloud solution architect for data and AI at Microsoft Switzerland GmbH. He has more than 25 years of BI and analytics development, engineering, and architecture experience and is a Microsoft Certified Data Engineer and a Microsoft Certified AI Engineer. Patrik has worked on numerous significant international data warehouse, data integration, and big data projects. Through this, he has built and extended his experience in all facets, from requirements engineering to data modeling and ETL, all the way to reporting and dashboarding. At Microsoft Switzerland, he supports customers in their journey into the analytical world of the Azure Cloud.

Michiel Rozema is one of Europe's top Power BI experts, living in the Netherlands. He holds a master's degree in mathematics and has worked in the IT industry for over 25 years as a consultant and manager. Michiel was the data insight lead at Microsoft Netherlands for 8 years, during which time he launched Power BI in the country. He is the author of two Dutch books on Power Pivot and Power BI, and is the author of the Extreme DAX title with Packt Publishing. Michiel is one of the founders of the Dutch Power BI user group and the initiator of the Power BI Summer School, and has been a speaker at many conferences on Power BI. He has been awarded the Microsoft MVP award since 2019 and, together with fellow MVP Henk Vlootman, runs the consultancy firm Quanto, specializing in Power BI.

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