Book Image

Tableau Certified Data Analyst Certification Guide

By : Mr. Harry Cooney, Mr. Daisy Jones
Book Image

Tableau Certified Data Analyst Certification Guide

By: Mr. Harry Cooney, Mr. Daisy Jones

Overview of this book

The Tableau Certified Data Analyst certification validates the essential skills needed to explore, analyze, and present data, propelling your career in data analytics. Whether you're a seasoned Tableau user or just starting out, this comprehensive resource is your roadmap to mastering Tableau and achieving certification success. The book begins by exploring the fundamentals of data analysis, from connecting to various data sources to transforming and cleaning data for meaningful insights. With practical exercises and realistic mock exams, you'll gain hands-on experience that reinforces your understanding of Tableau concepts and prepares you for the challenges of the certification exam. As you progress, expert guidance and clear explanations make it easy to navigate complex topics as each chapter builds upon the last, providing a seamless learning experience—from creating impactful visualizations to managing content on Tableau Cloud. Written by a team of experts, this Tableau book not only helps you pass the certification exam but also equips you with the skills and confidence needed to excel in your career. It is an indispensable resource for unlocking the full potential of Tableau.
Table of Contents (11 chapters)

Tableau Prep Joins

Tableau Prep is preferable to Tableau Desktop when creating combined data sources as it is generally better for creating data sources. If any additional data cleaning or transformation needs to occur before or after a join, then Tableau Prep is better. Tableau Prep also offers more flexibility in the join methodology/output.

In general, Tableau Prep works the same way as Tableau Desktop when it comes to a join where two tables/data sources are being combined – one from the left and one from the right. A join clause needs to be created, and the functionality is the same again, with the ability to select fields from either side and have them be compared to see whether they are equal, not equal, greater than, less than, greater than or equal to, or less than or equal to each other. Join clauses do not include Tableau calculations in Tableau Prep but a Calculated field can be made in a clean step prior to the join step.

When it comes to the output of the...