Spending Range

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

Domain

SQL

Difficulty

hard

Seniority

L5

Problem

Data science is modeling per-user spending variability and only cares about customers who have made more than one purchase. For each of those users, return the username, their smallest and largest transaction amount, and the gap between the two, sorted from the widest gap to the narrowest.

Summary

Between the smallest purchase and the biggest lies the story.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.