Welcome to Day 18 of our 21-Day DAX Challenge!


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In this challenge, we’ll calculate who is the most senior (longest-serving) employee in a company using Power BI DAX.

This kind of insight is super valuable for HR teams, whether it’s for loyalty rewards, leadership recognition, or planning service awards.

You'll learn how to:
-Calculate employee tenure in days using DATEDIFF
-Build a virtual table to compare all employees
-Use MAXX, FILTER, LOOKUPVALUE functions step-by-step
-Display the name of the most loyal employee in your dashboard

Use this logic in your HR dashboards to highlight long-serving employees and celebrate their loyalty.

Challenge Topic: Senior Employee Tenure in Power BI
Skill Level: Beginner-Friendly

Stay tuned for Day 19

Timestamps:
0:00 – Intro & today’s HR-focused challenge
0:19 – Who is the most senior employee?
0:43 – Plan: Calculate tenure using DAX
1:05 – Step-by-step DAX logic (4 steps)
4:10 – Final result: Steve Jobs
4:47 – Validation & HR use case
5:20 – What’s next in Day 19


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