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Photo of Paul Chapman, Global Director of Performance Management, BI and Innovation at JLL
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
Partner of the Year$ from Alteryx
Alteryx
Partner of the Year
EMEA
Community Impact 2024$ from Tableau
Tableau
Community Impact 2024
EMEA ESMB
Data for Good Champion$ from DataIQ
DataIQ
Data for Good Champion
Finalist
Best Data Academy or Skills Development$ from DataIQ
DataIQ
Best Data Academy or Skills Development
Finalist
Partner of the Year$ from Alteryx
Alteryx
Partner of the Year
Europe
Data for Good Champion$ from DataIQ
DataIQ
Data for Good Champion
Champion
Data for Good 2021$ from Tableau
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.

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Mon 15 Jul 2024 | Luke Bennett
Using the Tableau Output Tool and Resolving Common Errors
Whether you’re trying to get familiar with the Tableau Output tool or trying to troubleshoot an error that’s come up, this blog provides an overview of the tool’s settings and recommendations for resolving errors
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Tue 11 Jun 2024 | Bruno Gasparotto Ponne
Bayesian Statistics The Fun Way - Book Review
With the new acquisitions for the library at The Data School in Hamburg, I was lucky to be able to choose one of the new books. For a long time, I have heard about the term "Bayesian statistics" but never fully understood what it means and how we can use it to better understand the world
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Tue 09 Jul 2024 | Lorraine Ferrusi
How to create a Plum Pudding Chart in Tableau
A plum pudding is a traditional British dessert usually served on Christmas dinner. It's a dome shaped cake-like sweet desert with fruit pieces on the inside. In the early 1900 the plum pudding made its way into science when it was proposed as a model for the atom
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Wed 10 Jul 2024 | Le Luu
SQL Joins
Join and Union is usually used in SQL queries to combine 2 or more data sources. I wrote one blog before to summarize all types of join. If you haven't read it yet, you can read it here. In that blog, I divide types of join into 4 groups: Outer Join, Exclusive Join, Cross Join, and Self Join
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Sun 07 Jul 2024 | Yan Peng
How to Use KPI Cards as Action Buttons in Tableau
Switching between KPIs in a Tableau chart typically requires a parameter control. However, there are times when you might want to introduce another layer of interactivity, either because your dashboard is already loaded with filters or to make it more versatile
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Tue 02 Jul 2024 | Bruno Gasparotto Ponne
The Top 3 Resources For Your Tableau Certified Data Analyst Exam
Last month I passed the Tableau Certified Data Analyst exam. Even though the exam is not especially difficult, it is very important to prepare for it several days before the examination
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Mon 01 Jul 2024 | Alfie King
Finding " " in DAX
We had to generate an email address for these customers that were of the form “FirstName Surname” as seen here. The task was to do all of the steps in PowerBI Desktop instead of PowerQuery
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Tue 18 Jun 2024 | Yan Peng
What Are Specific Dimensions in Table Calculations in Tableau?
When setting up table calculations in Tableau, the "Compute Using" section offers options to define how comparisons are made. For instance, when computing percent difference down the table, each quarter is compared to the previous one within each year (image below)
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Mon 24 Jun 2024 | Aileen Pfleiderer
Breaking down the Cube
or "Rolling the Dice with Power BI: My Dive into an Expert Challenge" This blog is about the “Working out Wednesday" challenge “Rubiks cube” on Power BI („2024 Week 23 | Power BI: SVG Venn Diagram) and how I tried to break down a big task into small steps
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Fri 28 Jun 2024 | Mel Niere
Data School Blog Roundup - June 2024
Compiled by Dylan Moore, Intern General 1. What is data? by Tim Jeffries 2. Overcoming Adversity by Dillon Thomas 3. It's gonna get so much harder (A quick reflection on the first week of training) by Tim Jeffries 4. "So which do you prefer?" by Tim Jeffries 5
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Wed 19 Jun 2024 | Jenny Martin
What did it take to get into DS45?
DS45 are in the 4th week of their journey at the Data School
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Tue 25 Jun 2024 | Tim Jeffries
Scraping multiple webpages - in Power Query
One of the most enjoyable days so far today, as the planned Power Query WOW webpage scraping wasn't working as expected, so another had to be found quickly, and TL;DR no-one was entirely sure exactly how to get all the pages in properly

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