Book Image

Tableau Prep Cookbook

By : Hendrik Kleine
Book Image

Tableau Prep Cookbook

By: Hendrik Kleine

Overview of this book

Tableau Prep is a tool in the Tableau software suite, created specifically to develop data pipelines. This book will describe, in detail, a variety of scenarios that you can apply in your environment for developing, publishing, and maintaining complex Extract, Transform and Load (ETL) data pipelines. The book starts by showing you how to set up Tableau Prep Builder. You’ll learn how to obtain data from various data sources, including files, databases, and Tableau Extracts. Next, the book demonstrates how to perform data cleaning and data aggregation in Tableau Prep Builder. You’ll also gain an understanding of Tableau Prep Builder and how you can leverage it to create data pipelines that prepare your data for downstream analytics processes, including reporting and dashboard creation in Tableau. As part of a Tableau Prep flow, you’ll also explore how to use R and Python to implement data science components inside a data pipeline. In the final chapter, you’ll apply the knowledge you’ve gained to build two use cases from scratch, including a data flow for a retail store to prepare a robust dataset using multiple disparate sources and a data flow for a call center to perform ad hoc data analysis. By the end of this book, you’ll be able to create, run, and publish Tableau Prep flows and implement solutions to common problems in data pipelines.
Table of Contents (11 chapters)

Expanding datasets using a not inner join

In this chapter, we have assumed in all join-related recipes that there was an overlap between two data sources. However, for analysis purposes, you may be interested in what data is not overlapping, so that you can take action appropriately.

Using the same data as we've used in the Expanding datasets using a full outer join recipe, where we have a data source with projects, and another data source with project staff, we may change our use case to focus solely on data that does not overlap. That is, we are only interested in projects without staff assigned to them, or staff members not currently assigned to work on any project.

Getting ready

To follow along with this recipe, download the Sample Files 5.6 folder from this book's GitHub repository.

How to do it…

Start by opening Tableau Prep and perform the following steps to create a not inner join:

  1. Connect to the Projects.xlsx Excel file in order to create...