Book Image

Learning Pentaho Data Integration 8 CE - Third Edition

Book Image

Learning Pentaho Data Integration 8 CE - Third Edition

Overview of this book

Pentaho Data Integration(PDI) is an intuitive and graphical environment packed with drag-and-drop design and powerful Extract-Tranform-Load (ETL) capabilities. This book shows and explains the new interactive features of Spoon, the revamped look and feel, and the newest features of the tool including transformations and jobs Executors and the invaluable Metadata Injection capability. We begin with the installation of PDI software and then move on to cover all the key PDI concepts. Each of the chapter introduces new features, enabling you to gradually get practicing with the tool. First, you will learn to do all kind of data manipulation and work with simple plain files. Then, the book teaches you how you can work with relational databases inside PDI. Moreover, you will be given a primer on data warehouse concepts and you will learn how to load data in a data warehouse. During the course of this book, you will be familiarized with its intuitive, graphical and drag-and-drop design environment. By the end of this book, you will learn everything you need to know in order to meet your data manipulation requirements. Besides, your will be given best practices and advises for designing and deploying your projects.
Table of Contents (17 chapters)

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...