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ETL with Azure Cookbook

You're reading from   ETL with Azure Cookbook Practical recipes for building modern ETL solutions to load and transform data from any source

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Product type Paperback
Published in Sep 2020
Publisher Packt
ISBN-13 9781800203310
Length 446 pages
Edition 1st Edition
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Authors (3):
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Christian Cote Christian Cote
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Christian Cote
Matija Lah Matija Lah
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Matija Lah
Madina Saitakhmetova Madina Saitakhmetova
Author Profile Icon Madina Saitakhmetova
Madina Saitakhmetova
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Toc

Table of Contents (12) Chapters Close

Preface 1. Chapter 1: Getting Started with Azure and SSIS 2019 2. Chapter 2: Introducing ETL FREE CHAPTER 3. Chapter 3: Creating and Using SQL Server 2019 Big Data Clusters 4. Chapter 4: Azure Data Integration 5. Chapter 5: Extending SSIS with Custom Tasks and Transformations 6. Chapter 6: Azure Data Factory 7. Chapter 7: Azure Databricks 8. Chapter 8: SSIS Migration Strategies 9. Chapter 9: Profiling data in Azure 10. Chapter 10: Manage SSIS and Azure Data Factory with Biml 11. Other Books You May Enjoy

Using Spark built-in functions

Spark has built-in functions that can be used to augment manual profiling. It can replace some manual data profiling queries. This recipe will teach you about two basic built-in functions that, when used in conjunction with manual profiling, provide useful information to both data modelers and data scientists. In this recipe, we will use the DataFrame created in the first recipe and call Spark built-in functions.

Getting ready

This recipe uses Azure Databricks. If you are using a trial Azure subscription, you will need to upgrade it to a Pay-As-You-Go subscription. Azure Databricks requires eight cores of computing resources. The trial Azure subscription has only four computing resource cores. If you are using an Enterprise or MSDN Azure subscription, it should contain enough resources for Azure Databricks.

How to do it…

Now let's see how we can profile data with Spark built-in functions. We will be adding the code for this recipe...

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