Build your Team
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
Alteryx
Partner of the Year
EMEA
Tableau
Community Impact 2024
EMEA ESMB
DataIQ
Data for Good Champion
Finalist
DataIQ
Best Data Academy or Skills Development
Finalist
Alteryx
Partner of the Year
Europe
DataIQ
Data for Good Champion
Champion
Tableau
Data for Good 2021
EMEA
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 25 Dec 2025 | Rosh Khan
How to Build a Serverless API Data Pipeline on GCP (Part 2/2)
Introduction
In this blog, you'll learn how to build a production-ready, serverless data pipeline on Google Cloud Platform that automatically ingests data from an external API and loads it into BigQuery for analysis.
This is part 2 / 2 of the blog.
Step 6: Create a BigQuery Table
6
Thu 25 Dec 2025 | Rosh Khan
How to Build a Serverless API Data Pipeline on GCP (Part 1/2)
Introduction
In this blog, you'll learn how to build a production-ready, serverless data pipeline on Google Cloud Platform that automatically ingests data from an external API and loads it into BigQuery for analysis.
This is part 1 / 2 of the blog
Wed 17 Dec 2025 | Francesca Plaskett
Year on Year Comparisons using Gantt bars
Learn how to create coloured difference lines within a chart in this step-by-step tutorial based on Workout Wednesday 2021 - Week 46.
Tue 23 Dec 2025 | Rosh Khan
SQL Window Functions
Window functions in SQL allow you to perform calculations across a set of rows related to the current row, without collapsing the result set like regular aggregates do. They're incredibly powerful for analytics, ranking, running totals, and more
Tue 23 Dec 2025 | Rosh Khan
LATERAL SPLIT_TO_TABLE (Snowflake)
While working through Summer of SQL (created by Will Sutton), I ran into a situation where I needed to use the LATERAL SPLIT_TO_TABLE function. It’s one of those SQL features that feels a bit confusing at first, but once it clicks, it’s incredibly useful
Fri 19 Dec 2025 | Mariia Sapsai
How to build a spiral chart?
I will use the dataset Superstore.
Before we started, we also needed to create a new table in Excel or Google Sheets, where we write names – Range and numbers 0 and 1. You can see it below in the screenshot.
After that, we open our Tableau and add our first table – Superstore
Fri 19 Dec 2025 | Salome Grasland
Dynamic KPI Formatting in Tableau: A Practical Guide (With Direct CASE Examples)
When you use a parameter in Tableau to swap between KPIs, you inevitably run into the formatting problem:
* Revenue should look like $12,540,
* User count should look like 1,294,
* Conversion rate should look like 23
Wed 10 Sep 2025 | Claudina Mukangabo
Dynamic KPI's in Tableau
Dynamic KPIs are essentially numbers that update automatically as new data becomes available. Instead of being locked to a specific date, these KPIs always look at the latest period, so your dashboard stays current without requiring manual updates
Wed 17 Dec 2025 | Olivia Millar
The "Impossible" Group By: Aggregating Data Based on Table Calculations in Tableau
Grouping products into categories based on running cumulative sales presents a specific challenge in Tableau. To calculate a "Running % of Total", every single product is required in the view to define the sort order. However, creating a summary table requires removing that product detail
Wed 17 Dec 2025 | Robin Jones
Crafting a Doughnut Chart in Tableau: A Step-by-Step Guide
Doughnut charts are a fantastic way to visualise proportions, offering a clean and impactful alternative to
Sun 14 Dec 2025 | Aisha Senkubuge
From Learning to Teaching: Reflections from Learn What The Data School Learns
In week 10 of training, my cohort took part in our 'Learn What The Data School Learns' session, where we stepped out of the student role and into the instructor role to teach members of the public some of the tools we have been learning. Going into the session, I felt a mix of nerves and confidence
Want to know more?
Whether you're planning for the future or you have a project that needs to get started next week our team are more than happy to help.
Complete our contact form with your name, company email and a brief message and we will get back to you as soon as we can.