The Blog

Ideas, inspiration, creativity & understanding

At The Data School we believe that sharing knowledge and expertise is key to driving innovation and growth in the data community. Posts cover all topics across the Tableau, Alteryx and PowerBI communities.

We make blogging a cornerstone of each consultant's time at The Data School with the aim to solidify their own learning while giving back to the community. Our goal is to empower you with the knowledge and skills you need to succeed in the ever-evolving world of data analysis. So, explore our blog today and join the conversation!

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Tue 23 Jan 2024 | Alex Briody
LODs Fundamentals
 What is an LOD? LOD stands for "Level of Detail." Level of Detail expressions in Tableau allow you to control the granularity or level of detail at which a calculation is performed in your data visualization
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Tue 19 Dec 2023 | Le Luu
Calculations in Power BI and Tableau (Part 1)
During the training time with DSNY 5, I had an opportunity to work on a client project using Power BI. The team and I didn't know much about the Power BI tool at that time. Thanks to Lyon Abido, and Kinley Ly - The Data School consultants in cohort DSNY 3, they supported us in that project
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Mon 27 Nov 2023 | Sid Saythongphet
Zoning In: Tableau's Dynamic Zone Visibility
Tableau's Dynamic Zone Visibility (DZV) feature is a powerful tool that enables users to create interactive dashboards, enhancing data exploration and comprehension
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Sun 10 Sep 2023 | Samantha Fitzsimmons
Common Aggregate Functions
In Tableau, the use of aggregate functions enables you to either summarize or alter the level of detail in your data. When building a calculation, you cannot combine an aggregated value and a disaggregated value. As noted, common aggregate functions will be discussed in this blog
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Fri 25 Aug 2023 | Sid Saythongphet
Calculating the Basics of Table Calculations - Part 1
In Tableau, did you know we are able to transform the values within our visualization directly? We can do this by implementing a special type of calculation, called table calculations
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Fri 29 Sep 2023 | Terrence Miller
DSNY4 Training Recap + Next Steps
Training for DSNY 4 is over. Those 4 months flew by. The beginning of training felt slow paced with a lot of review topics for me
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Fri 30 Jun 2023 | Afnan Foyez
LODs
What Are LODs? LODs, or Level of Detail expressions, are a powerful capability within Tableau that allow you to perform calculations at different levels of detail in your data; regardless of which dimensions are within your view
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Sat 13 May 2023 | Nayeli Jaime
LO(A)Ds of LODs
Level of Detail calculations, also known as LODs, allow users to compute values at both the data source level and at the visualization level in Tableau. They allow users to perform complex calculations on data based on different levels of granularity
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Sun 05 Feb 2023 | Mohammed Uddin
BENCH BLOG 2 - Concepts That Gave Me Headaches, But I Finally Understood and Now You Can Too: LODs
   LOD’s or level of detail in Tableau always gave me nightmares. To be completely honest, anything with calculated fields fills me with dread. Although, I feel that's due to negative assumptions from fear; like bad news creating hysteria about something without proper research
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Wed 28 Dec 2022 | Elaine Yuan
SQL Aggregate Window Functions & Fixed LOD Expressions
SQL window functions are confusing – so are fixed level of detail (LOD) expressions in Tableau. Then, why am I comparing them? Wouldn’t that make everything even more complicated?!
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Thu 15 Dec 2022 | Bianca Ng
LOL: LODs of Love
What is Level of Detail (LOD)? The lowest level of detail is a single row of your data and is not aggregated at all. In Tableau, the level of detail determines the number of marks in the view
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