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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 04 Jun 2026 | Holly Andersen
Control Charts in Power BI
A control chart is a line chart with added context; it shows a value over time, along with upper and lower control limits. These limits help show whether a value is behaving within its normal range, or whether a point looks unusually high or low
Thu 04 Jun 2026 | Holly Andersen
Dynamic Number Formats in Power BI
Power BI includes plenty of built-in formatting options for numbers. For many reports, choosing currency, percentage or decimal places from the formatting menu will do exactly what you need. However, sometimes you want a little more control
Wed 10 Jun 2026 | Carla Villafana
Basic Table Functions and Calculations in Tableau
Have you ever built a chart in Tableau and wondered how each value compares to another, or how those values change over time? If so, table calculations might be a helpful tool.
To begin, let’s debunk some misconceptions.
1
Mon 08 Jun 2026 | Arushi Pant
How to filter the top X products alongside other products in Power BI?
While working on a recent Workout Wednesday Challenge, https://www.workout-wednesday.com/2024-week-31-power-bi-topn-and-others/ .I needed to filter a visualisation to show the "Top N" items while grouping everything else into an "Other" row
Wed 03 Jun 2026 | Amelia Young
Parameters
How to create parameters in Tableau Desktop vs. Power BI.
Mon 08 Jun 2026 | Gerard Najarro
Tableau’s Aggregate Functions: A Beginner’s Guide
A few weeks into training at The Data School, our cohort was given an assignment. Each of us was assigned a folder from Tableau’s calculated field function library and tasked with becoming an expert on it. My folder was Aggregate
Fri 05 Jun 2026 | Ben Hayward
SQL Murder Mystery Walkthrough (Spoilers)
Solving a murder using SQL with some learning along the way.
Fri 05 Jun 2026 | Kaori Ikarashi
Getting Started with Useful DAX Functions
There are many DAX functions available in Power BI, but some are more frequently used than others. Understanding these functions can help you write flexible calculations and better understand how DAX works
Thu 21 May 2026 | Vivien Lee
Creating a Radial Bump Chart in Tableau
Having only created one bump chart during training, I thought it'd be nice to make another one but with a twist! Here's how my radial bump chart turned out. I used Formula 1 data from the past 20 years to track the rankings and total points of each constructor
Wed 10 Jun 2026 | Sophie Yeung
Changing set actions to add to set
This blog post is a step-by-step guide on how to use Tableau Set Actions to create an interactive dashboard experience. Using a pizza toppings dataset, I will demonstrate how user clicks can dynamically add or remove items to instantly recalculate a total price
Fri 05 Jun 2026 | Helena Reichenvater
KPI Reporting in Power BI
One of the most important tools in presenting your analysis effectively are your KPIs, which provide an overview of your data and the most important takeaways for viewers
Wed 03 Jun 2026 | Shivam Wadhia
SQL: Window Functions
Window Functions allow for the performing of calculations across a set of related rows, while still preserving the original row-level of the input table(s).
Therein lies the main difference between window functions and normal aggregate functions
Want to know more?
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