Transaction Revenue by Customer

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

Domain

SQL

Difficulty

medium

Seniority

L3

Problem

Compute March 2026 transaction totals per customer. Only include users who made at least one transaction that month, sorted from highest spender to lowest.

Summary

One month, every customer, every dollar accounted for.

Practice This Problem

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