Power BI Interview Prep Q1: Duplicate vs Reference in Power Query
Hey everyone! Welcome to Question 1 of our 10-part Power BI Interview Preparation series.
In this video, we crack one of the most frequently asked questions in data analyst interviews: What is the exact difference between "Duplicate" and "Reference" queries in Power Query?
We will look at a live demo using a simple 10-row dataset to see how they impact your report's performance and data model structure. By the end of this video, you will know exactly how to answer this question confidently in your next interview!
📌 Timestamps:
00:00 - Introduction & Hook
00:42 - Live in Power Query Setup
01:26 - What is a Duplicate Query? (Live Demo)
03:12 - What is a Reference Query? (Live Demo)
05:04 - How to Answer in an Interview (Summary)
05:42 - Outro & Next Video Preview
If you found this video helpful, please hit the LIKE button and SUBSCRIBE for Question 2 of this series where we cover "Merge vs. Relationships".
Drop your questions or feedback in the comments below! Let's learn and grow together. 🚀
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