Multi-Table Report

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

Domain

SQL

Difficulty

medium

Seniority

senior

Problem

Combine session engagement with transaction revenue into a single user report. For each user, show their name, total session count, and total transaction amount. Users with zero sessions or zero transactions must still appear; the report cannot silently drop inactive users.

Practice This Problem

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