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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.
Thu 02 Apr 2026 | Lily Kiziriya
How to: Cross Tab in Alteryx
You may know it by another name: the pivot. In Alteryx, you want to use the crosstab tool when you want to reshape your table so that a subset of the data points from your rows can be separated into a new column.
Lets look at the setup for the cross tab
Fri 27 Mar 2026 | Tomo Mensendiek
Recursion in SQL (Factorials!)
Recursion is a concept used to solve a large problem by breaking it down into smaller, similar problems. It works by having a function call itself repeatedly until a specific condition is met.
Let’s look at an example: the factorial
Wed 25 Mar 2026 | Lily Kiziriya
Data Transposing for Tableau (and visualization in general) - A Case Study
This week I met up with a friend to burn the midnight oil if you will, and they were working on a dashboard that used data that had to do with global monthly temperatures through a range of years
Fri 27 Mar 2026 | George Rycroft
Fixed Level Of Detail Calcs
Level of Detail (LOD) calculations can be a daunting thing when you are new to Tableau, but understanding them can make your analysis so much easier. In this blog I will guide you through how to use Fixed LOD's in Tableau
Wed 01 Apr 2026 | Tobin Hardy
Creating UK Postcode Regions in Tableau
I recently worked on a project where our client wanted to visualise the distribution of a measure across different UK regions. However, regions, perhaps due to their ambiguity, are not automatically mapped by Tableau
Wed 01 Apr 2026 | Charles Yi
Where's Your HEAD at? A Guide to Reverting in Git
Once, a client asked me to revert a dbt project to the state it was in two weeks ago. Long story short, there were some changes to reporting that required us to go back in time.
It sounded easy enough
Tue 31 Mar 2026 | Francesca Plaskett
How to build a slope chart in Tableau
Follow this step-by-step guide to learn how to create a slope chart in Tableau Desktop.
Tue 31 Mar 2026 | Jacob Aronson
Developing a Star Trek Dashboard Part 1: Data Collection and Pre-Processing
For all of the analytical experience I have collected over my first three months of Data School training, I have not had the opportunity to take my time on a longer term project that applies everything I have learned so far
Tue 31 Mar 2026 | Arushi Pant
Tableau Prep VS R Series Entry 1 - Week 6 Challenge
I’m excited to kick off a new series comparing the data preparation workflows of Tableau Prep and R.
First things first: What is R?
R is a programming language specifically designed for statistical computing and graphics
Tue 31 Mar 2026 | Vaishnavi Shankar
Understanding similar but slightly different functions In Tableau Desktop
I’ve broken down several scenarios to make working with functions simpler. This includes functions that perform similar tasks but are used in different situations, along with why you would choose one over another and practical examples for context.
1
Tue 31 Mar 2026 | Kate Loder
Mastering Calculated Date Fields in Tableau
When working with time-based data in Tableau, calculated fields unlock a powerful layer of flexibility and insight. Whatever you may be building a dashboard for, understanding how to manipulate dates is essential
Fri 27 Mar 2026 | Oscar Kriebel
Alteryx-bots, Roll Out : An Introduction to Transformations in Alteryx
In a few weeks, my cohort and I (along with Kib and Tyler from DS54) will be presenting two different day-long sessions here at The Information Lab in London. One is on how to use Tableau and the other is on how to use Alteryx
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