Tableau Data Cleaning

  1. Data Cleanup Project Plan
  2. Tableau Publish Data Source

How to clean data with Tableau Prep Builder. Covers basic data cleaning, Pivot, and Joining.

So I let Tableau’s Data Interpreter give my data a quick clean. This basically distributed the merged cells and put in 3 lines of data for each facility. Not where we will want to end up but something perfectly helpful at this early stage. Tableau Prep provides various cleaning operations that you can use out of the box to clean and shape your data. Cleaning up dirty data makes it easier to combine and analyze your data or makes it easier for others to understand your data when sharing your data sets. With Tableau Prep you can now clean your data and edit values. See below for an example of edit values: In Tableau Prep, you can create one step that does multiple “cleaning” functions like filter, change data types, rename and remove fields.

Clean your data in Tableau Prep Builder
and easily create data flows

With Tableau Prep Builder you can easily clean your data. In many organisations usually it’s the data engineers and data scientists to take care of data preparation. Analyst interact with the data only after a process of data cleaning and preparation.

Tableau Data Cleaning

Thanks to Tableau Prep, data cleaning has become quicker and easier. This way everyone can prepare data faster than ever before and more intuitively! Tableau Prep consists of two products: Tableau Prep Builder for building your data flows and Tableau Prep Conductor for sharing and managing flows within the organisation.

Gain a complete picture of your data

In Tableau Prep Builder there are three coordinated ways of visualising your data: row level, column profiles and the entire data preparation process. Depending on what you are doing, you can choose which view you want to work with.

CleaningTableau data cleaning techniques

Get immediate results


With Tableau Prep Builder if you want to edit a value, you can do that directly: change the join type and see the difference immediately! With every action you take you can see the data change, even when this involves millions of rows of data. Tableau Prep Builder gives you the freedom to re-arrange steps and to experiment without consequences.

Work smarter, work faster

Instead of writing difficult lines of code you can now use smart functions to solve general data preparation problems. Tableau Prep Builder uses fuzzy clustering to convert recurring tasks into operations that you can perform with one click. For example: grouping by pronunciation.

Connect with more data

You can now connect to data stored locally and in the cloud, whether it’s a database or a spreadsheet. Even without programming you have access to different data which you can combine and clean up. Tableau Prep Builder works, very cleverly, as much as possible in the database. This way you can use existing database investments for rapid flow.

Stay in the flow


Data Cleanup Project Plan

Always stay in the analytical flow. With Tableau Prep Builder you can easily open outputs with Tableau Desktop. You can also easily share your work via Tableau Server or Tableau Online. When sharing is easy business results improve because. You can close the gap between data preparation and analysis.

Do you want to know more about Tableau Prep Builder?

Do you want to learn more about data cleaning and preparation in Tableau Prep? We have a dedicated playlist on YouTube. Here you will find a collection of how to’s and tips and tricks in Tableau Prep.

Tableau Publish Data Source

Tableau Prep Builder Licenses

You can purchase Tableau Prep licenses through The Information Lab. Did you know that our customers receive free support and have access to our Center of Excellence?