Tableau Prep interview questions

6 questions with answers, grouped by topic.

Building flows

The interface, inputs, and combining data with joins and unions.

2

When would you use Tableau Prep rather than preparing data in Desktop?beginner How does the join step help you catch data problems?intermediate

Cleaning & transforming

Clean steps, grouping values, splitting fields and calculations.

1

What are the risks of automatic value grouping?intermediate

Reshaping & aggregating

Pivot steps and aggregate steps.

2

What is a wildcard pivot and why does it matter?intermediate Explain the difference between an aggregate step and a FIXED LOD in Prep.intermediate

Publishing & outputs

Output steps, running flows, and scheduling.

1

How would you design a flow that is easy to maintain?intermediate