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Enhancing your data team with ours
Our consultants come armed with both technical and soft skills to support you to make the most of your data.
The Data School has been paramount to our success at JLL. It has allowed us to bring in highly skilled Tableau and Alteryx consultants. It saves considerable time trying to recruit contractors as I know their skills and training are to the highest standard. Over the past 5 years my team has developed analytical insights which have generated multi million dollar savings of which a considerable amount can be attributed to the Data School consultants we have had working on projects.
Paul Chapman, Global Director of Performance Management, BI and Innovation at JLL
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EMEA
Tableau
Community Impact 2024
EMEA ESMB
DataIQ
Data for Good Champion
Finalist
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Best Data Academy or Skills Development
Finalist
Alteryx
Partner of the Year
Europe
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What our consultants are working on
We believe that sharing knowledge and expertise is key to driving innovation and growth in the data community. That's why we're excited to share our latest insights, tutorials, and industry trends with you through this blog.
Written by our team of experienced data consultants, these posts aim to solidify their own learning while giving back to the community.
Wed 15 Apr 2026 | Vivek Patel
Getting Started with Regex
If you’ve ever worked with messy data, weird text formats, inconsistent naming, you’ve probably heard of regex (regular expressions). At its core, it’s a way to search, match, and manipulate text patterns efficiently
Wed 15 Apr 2026 | Vaishnavi Shankar
Grouping Data by First Letter (A-M vs N-Z) in Tableau
There are two ways to split text fields (like State names) into alphabetical groups.
1. The first uses ASCII codes, where letters are converted into numbers. This works but is more complicated and harder to read.
2. The second uses simple alphabetical comparison (e.g
Wed 08 Apr 2026 | Oscar Kriebel
Power Query or Alteryx or Prep: How do they compare?
After having gone through comparing Tableau Prep to both Python and Alteryx, it's time to move onto another tool that we learn as part of the Data School
Wed 15 Apr 2026 | Vaishnavi Shankar
How to Make a Dynamic Stacked Bar Chart in Tableau Desktop
Why make a dynamic stacked bar chart?
A stacked bar chart is great for showing part-to-whole relationships across categories. However, smaller segments can be hard to compare and important categories may get lost in the stack
Mon 16 Mar 2026 | Kate Loder
Logical Functions
Calculated fields in tableau are a feature that allow us to derive insights from the dataset that the dataset itself does not actually provide. It is a way of finding out further information from our data that may not be immediately available to the user
Wed 15 Apr 2026 | Kate Loder
Understanding Join Types in Tableau
When working with data in tableau, there are many occasions when you need more than one table of data for your visualisation, and it is very common for these additional tables to be stored separately from each other
Sun 12 Apr 2026 | Oliver Furtak
Makeover Monday 1/2: Mastering the Balance Between Time and Expectations
Why Makeover Monday?
Working under time pressure is no walk in the park. To understand how managing your own expectations can help, the Makeover Monday Challenge offers the ideal training opportunity.
The challenge is primarily about planning and efficiency
Tue 14 Apr 2026 | Laura Brylka
Daten-Scaffolding mit Tableau Prep: Zeilen erstellen für fehlende Datumswerte
Manchmal sind die Daten, die wir haben, an sich nicht ausreichend für die Analyse die wir damit machen wollen. Dazu muss man neue Zeilen oder Spalten behelfsmäßig in die Daten einbauen
Tue 24 Mar 2026 | Shabnam Dost
Level of Detail
Definition: Level of Detail (LOD) expressions allow to perform to show visualizations at a different granularity that what is currently shown. They provide the flexibility to bind a calculation to a specific dimension, in order for you to look at a broader total or a more granular level
Tue 07 Apr 2026 | George Rycroft
Data Modelling in Power BI and Power Query
Creating a data model in Power BI (PBI) can feel unfamiliar if you’re coming from Tableau. This blog provides a clear guide to how the data model in PBI works and highlights key differences compared to Tableau
Fri 10 Apr 2026 | Jacob Aronson
Finding Multiples of 37 ... in Tableau Prep?
Tableau Prep Builder is Tableau's data preparation and transformation program, which is useful for reshaping your data before visualization. This month of training we have the benefit of being coached by Carl Allchin, who literally "wrote the book" on Tableau Prep
Sun 12 Apr 2026 | Aschraf Aouina
Alteryx Week 120: Popular Baby Names
Task:
Das Ziel besteht darin, für jedes Jahr im Zeitraum von 1880 bis 2017 die jeweils beliebtesten registrierten Babynamen für Jungen und Mädchen zu ermitteln und deren Häufigkeit zu bestimmen.
Data:
Challenge_120_start_file.yxmd
1. Data Input
Einlesen der Ausgangsdaten.
2
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