First Among Many

A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant feedback.

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

We group users by account status, and every segment leans toward one product category more than the rest. For each status, surface the category with the most purchases, where a purchase is a single transaction regardless of how many units it moved.

Summary

Each segment has a favorite category.

Practice This Problem

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