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Tableau Prep Cookbook

You're reading from   Tableau Prep Cookbook Use Tableau Prep to clean, combine, and transform your data for analysis

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Product type Paperback
Published in Mar 2021
Publisher Packt
ISBN-13 9781800563766
Length 288 pages
Edition 1st Edition
Tools
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Author (1):
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Hendrik Kleine Hendrik Kleine
Author Profile Icon Hendrik Kleine
Hendrik Kleine
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Table of Contents (11) Chapters Close

Preface 1. Chapter 1: Getting Started with Tableau Prep 2. Chapter 2: Extract and Load Processes FREE CHAPTER 3. Chapter 3: Cleaning Transformations 4. Chapter 4: Data Aggregation 5. Chapter 5: Combining Data 6. Chapter 6: Pivoting Data 7. Chapter 7: Creating Powerful Calculations 8. Chapter 8: Data Science in Tableau Prep Builder 9. Chapter 9: Creating Prep Flows in Various Business Scenarios 10. Other Books You May Enjoy

Combining data ingest and Union actions

When you have multiple data sources that need to be vertically stacked using a union, you may opt to perform that action during ingestion. This avoids you having to create a separate Union step in Tableau Prep. Furthermore, you can use wildcards in your input, such that the input becomes dynamic, and new data files can be ingested as they are added. A typical scenario for this would be an automated process that exports data on a recurring schedule, which you then need to union with prior data exports.

In this recipe, we'll use a special type of union that is part of the input step, rather than a step by itself. Using the Union functionality during input allows you to ingest and union multiple input files simultaneously.

Getting ready

To follow along with this recipe, download the Sample Files 5.2 folder from this book's GitHub repository. This folder contains sales data that has been exported every month, and so we have one...

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