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)

Type Conversion

There are functions in Tableau to convert any field or value to another data type as long as it can be configured sufficiently. Dates and spatial fields can also be created from scratch.

In the order example data source, a type conversion function used could be the STR function, which would convert a numeric ID field into a string, as technically, IDs should not be treated as numeric values.

Data Types

For every data type in Tableau, there is a calculated field function to convert from one type to another.

The STR function converts a value to a string data type. It is formatted as STR(value) and outputs the input value as a string. This is often useful for ID fields, which may be read in by Tableau as a numeric data type. An example would be an ID field with numeric values such as 10001 being formatted as STR([ID]), resulting in the ID being cast as strings, 10001.

The INT and FLOAT functions are similar to the STR function, but instead convert values...