What is DAX in Power BI: A Practical Guide for Beginners (with Examples)
Learn DAX from scratch: what it is, what it's for, difference from Power Query, the 5 essential functions, and common mistakes. With code examples.
Learn DAX from scratch: what it is, what it's for, difference from Power Query, the 5 essential functions, and common mistakes. With code examples.
Step by step when the numbers don't match. From the 80% rule to database validation.
Complete guide to inactive relationships in Power BI: why they appear, how to detect them, USERELATIONSHIP, role-playing dimensions, and advanced patterns.
How to calculate rolling 12 months in Power BI correctly. Step-by-step DAX tutorial.
How to handle products that change categories over time in DAX.
Value Encoding, Dictionary Encoding, and RLE explained without the academia. Why your model is 2GB when it should be 200MB.