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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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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.
Fri 25 Sep 2026 | Dylan Serino
Pareto Charts: How They Work, and How to Build One in Tableau
What if you only needed to fix three things to solve 80% of your problems? That sounds too good to be true, but this pattern shows up a lot in real-world data. A couple of products bring in most of the revenue, or a small group of defects cause most product returns. This is the Pareto principle, a
Mon 05 Oct 2026 | Hannah Norfolk
Setting up a Python project on your local machine
Starting a new python project for the first time can be intimidating, and there is a lot to consider before you even type in any python. General requirements for this would be: a rough understanding/awareness of Git, and python installed on your device
Mon 05 Oct 2026 | Lily Kiziriya
Identity vs Access in Snowflake
For improved security as software has moved to the cloud, products like Snowflake must consider how to manage the way users can access and manage their data
Mon 05 Oct 2026 | Anne Porcia Affi-Asamani
dbt as it Relates to Tableau and Other BI Visualisation Tools
Sun 04 Oct 2026 | Ismail Abdillahi
Scaffolding Data in Tableau Prep
What is scaffolding?
Scaffolding means building the rows your data should have, so you can analyse the rows it doesn't have.
Most datasets only record when something happens. An orders table has a row for each order, not for each day
Fri 02 Oct 2026 | Mila Kholodiy
My First Viz of the Day: An Amazon Dashboard, a Lot of Inspiration, and Everything I Learned
How I got my first Viz of the Day, who inspired me, and 10 tips to help you get yours.
Thu 01 Oct 2026 | Kaori Ikarashi
Context transition in DAX
I have written a blog about Row context and Filter context, another important DAX concept is context transition.
Context transition happens when DAX converts an existing row context into filter context
Thu 30 Jul 2026 | Arushi Pant
How to dynamically update a column in SQL using Set-Based Logic.
I came across the following exercise and spent some time figuring out the best approach, which is a very specific challenge. I hope the logic might be applicable for a use case where you need to dynamically update a column based on values present in other fields
Wed 30 Sep 2026 | Jaden Matthias
Orchestration in Kestra
Orchestration is an important part of the data engineering lifecycle, allowing engineers to structure and run parts of the ingestion process. There are many examples of orchestration tools from Apache Airflow to Microsoft Task Scheduler but in this blog we'll be focusing on Kestra
Wed 30 Sep 2026 | Dan Booth
Git Key Functions
Git is a free, open-source version control system that tracks changes to files, so you can see what changed, when, and who changed it. It lets you save snapshots of your project called commits, roll back to earlier versions, and create branches to try out new ideas without messing up the main code
Tue 29 Sep 2026 | Dev Bhatnagar
Using Deneb in Power BI
Workout Wednesday Week 13, 2026
2026 Week 13 | Power BI: Tile Map with 3D Effect – Workout WednesdayWorkout WednesdayMeagan Longoria
This workout Wednesday took me around 7+ hours to do, as I had to plan out steps of cleaning, chart planning and learning a new tool
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