Point of Entry

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

Domain

SQL

Difficulty

hard

Seniority

L4

Problem

The growth team is checking whether the people who arrive and simply look around ever turn into buyers. For every user whose very first recorded event was a page view, count how many purchases they later made, and keep the ones who never bought with a count of zero. Order the result from the most purchases down, breaking ties by user ID ascending.

Summary

Everyone starts by looking. Count who came back to buy.

Practice This Problem

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