Waymo Data Science Interview | LeetCode 1045 | SQL HAVING vs. Pandas GroupBy Nunique

This is a classic "Relational Division" problem frequently asked in Data Engineering and Data Science interviews at companies like Waymo, Amazon, Uber, and Airbnb.

Key Concepts Covered:
- The SQL Strategy: Using GROUP BY and the HAVING clause to compare a local count against a subquery total.
- The Pandas Strategy: Utilizing .groupby() and .nunique() to filter for customers who meet the required threshold.

⏱️ Timestamps:
0:00 - Intro
0:45 - SQL Solution
1:29 - Python Pandas Solution

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