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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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Community Impact 2024

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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.

All Blog Posts

Wed 31 Dec 2025 | Francesca Plaskett

How to generate rows in Tableau Prep, Power Query and Alteryx

If you're struggling to work out how to create new rows whilst preparing your data, you've come to the right place. Whether you're using Tableau Prep, Power Query or Alteryx, this blog post will take you through a step by step of how to get it done.

Wed 31 Dec 2025 | Aisha Senkubuge

Preparing for the Alteryx Designer Core Exam

I recently sat the Alteryx Designer Core exam and wanted to put together a short guide for anyone planning to take it in the future. This post walks through what the exam is, how it is set up, what it covers, and some practical tips that I found useful when sitting it

Wed 31 Dec 2025 | Aisha Senkubuge

Making Sense of SQL

As part of training, I have been learning SQL and how it is used to work with data stored in relational databases. Although I had come across SQL before, I was still very new to it, and this was my first time properly understanding how it works rather than just recognising the syntax

Tue 30 Dec 2025 | Aisha Senkubuge

Taking on the Project Manager Role

Project overview In week 11 of training, I took on the role of project manager for our client project. Going into the week, I was nervous. It felt like a lot of responsibility knowing that if anything went wrong, it would ultimately sit with me

Tue 30 Dec 2025 | Kib Cheung

How to Build a Dynamic Dashboard Landing Page

How do you build a dashboard that scales? In a recent project I tackled a client brief to create a dynamic landing page in Tableau. Moving from static buttons to a data-driven bar chart menu, I built a sleek, automated "Hub" that’s both user-friendly and easy to maintain

Tue 02 Dec 2025 | Adil Ahmad

Fixed LODs in Tableau Desktop

LODs: LODs (level of detail) calculations allow you to pull in values at a different level of detail than what is currently in your view. This can be hard to understand in words so here is an example to help. Here I have a table of the sales by sub category and category

Mon 29 Dec 2025 | Francesca Plaskett

Ordering a stacked bar chart in Tableau

Learn how to use a parameter to reorder your stacked bar charts.

Sun 28 Dec 2025 | Rosh Khan

QUALIFY in SQL: A Cleaner Way to Filter Window Functions

If you've ever worked with window functions in SQL, you've probably run into a familiar frustration: you can't filter them directly with WHERE or HAVING. The traditional workaround? Wrap everything in a CTE or subquery. But there's a better way: QUALIFY

Fri 26 Dec 2025 | Rosh Khan

What does the POSITION function do in Snowflake?

POSITION in Snowflake, also known as CHARINDEX in other databases, is a simple function that finds the location of a substring within a larger string

Fri 26 Dec 2025 | Rosh Khan

SUBSTR : What does it do?

SUBSTR in Snowflake, or SUBSTRING in other databases, is a simple function that extracts part of a string from a larger string

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)

Want to know more?

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