Serge Aurubin

SERGE AURUBIN

DATA SCIENTIST

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FAANG SQL Interview Question | Can You Solve This 15‑Minute Time Window Problem?

techTFQ

November 27, 2025   1

Solve a real FAANG‑style SQL interview problem where user events must be rounded to the nearest 15‑minute window and counted per user.​
In this video, we walk through the problem statement, derive the logic step by step, and implement the final query using CTEs, timestamps, and rounding functions so you can handle similar time‑window questions in your next data engineering or analytics interview.​

Check out SQLNest (A brand new All-in-One SQL Learning Platform):
https://sqlnest.com/

You’ll learn:
- How to convert event timestamps to seconds and round them to a 15‑minute bucket.
- How to group events per user and time window to produce the required output.
- How to think about SQL interview questions you might face at FAANG and other top tech companies.

THANKS FOR WATCHING!

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