O'Reilly logo

Learning Tableau by Joshua N. Milligan

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Joins and blends

Joining tables and blending data sources are two different ways to link related data together in Tableau. Joins are performed to link tables of data together within a single data source. Blends are performed to link together multiple data sources.

Joining tables

Most databases have multiple tables of data that are related in some way. Imagine you have been asked to analyze data in a simple database at a hospital with four main tables, related like this:

Joining tables

The primary table is the Visit table that has a record for every visit of a patient to the hospital and includes details such as the start and end dates and the type of visit (for ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required