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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
Emerging Partner of the Year
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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
DataIQ
Data for Good Champion
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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.
Thu 23 Apr 2026 | Ellie Kershenbaum
Explaining Small Multiples in Tableau
Recently, I wrote a blog (https://www.thedataschool.co.uk/ellie-kershenbaum/small-multiples-chart-trellis/) in which I explained how to create a Trellis (or small multiples) chart in Tableau. In that post, I introduced two key table calculations required to build the layout
Thu 23 Apr 2026 | Shivam Wadhia
SQL: Writing Order vs Execution
Unlike most programming languages, SQL queries are not executed in the order in which they are written. This blog focuses on the difference between writing order and execution order. Understanding the differences between the two is essential for writing correct queries
Wed 15 Apr 2026 | Ellie Kershenbaum
Web Scraping vs APIs
We recently started learning how to use APIs, which is something I’d been looking forward to since joining The Data School. One of my first ideas for a dashboard was one that mapped London music venues based on the types of gigs they put on. I quickly realised I would need an API to implement it
Fri 10 Apr 2026 | Vaishnavi Shankar
A Guide to Using ZoomIt for Presentations
What is ZoomIt?
ZoomIt is a screen zoom and annotation tool (from Microsoft’s Sysinternals suite) that’s especially useful during live presentations
Wed 22 Apr 2026 | Rosh Khan
How to create a Body / Muscle Map in Tableau using X,Y coordinates and Map Layers
How to create a Body / Muscle Map in Tableau using X,Y coordinates and Map Layers
Thu 23 Apr 2026 | Martin Regan
SQL Basics: The Core Commands
When you first start learning SQL, it can feel like a lot. Different clauses, different rules, and quite a bit of syntax to remember. But in reality, most queries are built from just a small set of core commands. Once you get comfortable with these, SQL starts to feel easier to understand
Wed 22 Apr 2026 | Daniel Bostrom
Working with JSON in Snowflake SQL
For this blog, I'll assume some prior knowledge, including what JSON is and why it's necessary to be able to parse it with SQL
Mon 20 Apr 2026 | Tomo Mensendiek
Mapping Fire Risk Zones in NYC using Alteryx
This project uses spatial tools in Alteryx to identify areas in New York City with sparse fire hydrant coverage. The goal is to create a spatial output that highlights locations with potentially higher fire risk due to limited nearby water access, which can then be visualized in Tableau
Thu 16 Apr 2026 | Oscar Kriebel
Play Your Hand Right: Using APIs in Alteryx
One of the topics covered during our training here at the Data School is on APIs and how we can use that in our work. For the introduction to them in our training and for this blog, different APIs were accessed through Alteryx's Download tool. But to start, we'll need to understand what an API is
Wed 15 Apr 2026 | Vaishnavi Shankar
Making Rounded Progress Bar Charts in Power BI
Progress bar charts aren’t a built-in feature in Power BI, but you can recreate the effect with a simple workaround. We are also going to make them rounded to add more to our learning.
Here’s how to do it step by step.
1
Thu 26 Mar 2026 | Vivien Lee
SQL Basics Cheatsheet
Order of Query Statement:
1. SELECT - columns
2. FROM - tables
3. WHERE - row level filtering
4. GROUP BY - aggregating
5. HAVING - column based filtering (something that's aggregated in the select)
6. ORDER BY - sorting
1 - SELECT
Choose your columns using SELECT
Tue 14 Apr 2026 | Oliver Furtak
Makeover Monday 2/2: When the Clock Ticks Against Your Own Ambitions
In my last blog post, I summarized how the Makeover Monday Challenges help us become better Data Consultants. So much for the theory… here are my experiences on what I learned about myself while under the gun. 😉
Minute 00:00
I open the current Makeover Monday Challenge
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