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Learning Pentaho Data Integration 8 CE

You're reading from   Learning Pentaho Data Integration 8 CE An end-to-end guide to exploring, transforming, and integrating your data across multiple sources

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Product type Paperback
Published in Dec 2017
Publisher Packt
ISBN-13 9781788292436
Length 500 pages
Edition 3rd Edition
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Author (1):
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María Carina Roldán María Carina Roldán
Author Profile Icon María Carina Roldán
María Carina Roldán
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Table of Contents (17) Chapters Close

Preface 1. Getting Started with Pentaho Data Integration 2. Getting Started with Transformations FREE CHAPTER 3. Creating Basic Task Flows 4. Reading and Writing Files 5. Manipulating PDI Data and Metadata 6. Controlling the Flow of Data 7. Cleansing, Validating, and Fixing Data 8. Manipulating Data by Coding 9. Transforming the Dataset 10. Performing Basic Operations with Databases 11. Loading Data Marts with PDI 12. Creating Portable and Reusable Transformations 13. Implementing Metadata Injection 14. Creating Advanced Jobs 15. Launching Transformations and Jobs from the Command Line 16. Best Practices for Designing and Deploying a PDI Project

Merging streams in several ways


You have just seen how the rows of a dataset can take different paths. Here you will learn the opposite, how data coming from different places are merged into a single stream. We will break this section into two parts:

  • Merging two or more streams
  • Customizing the way of merging streams

Merging two or more streams

For demonstrating how to merge streams, let's export a new file from the JIRA website. Following the same instructions as before, we will export the issues with a different set of filters:

  • Project: Pentaho Data Integration - Kettle
  • Issue Type: Bugs
  • Status: All excepting CLOSED and RESOLVED

This time, instead of exporting the current fields, we will select the option Excel (All fields).

If you open the Excel file, you will note that this version contains much more information as compared to the previous version. 

Now we have:

  • One Excel file containing new features for PDI.
  • A second Excel file containing the list of unresolved bugs of PDI. This file has many more...
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