Full Funnel

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

Domain

SQL

Difficulty

hard

Problem

The funnel team is building a "full lifecycle" segment of users who engaged at every stage: searching, browsing, and purchasing. Return a deduplicated list of usernames for users who have activity in all three areas.

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.