Funnel Leakage Report

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

Domain

SQL

Difficulty

hard

Seniority

L5

Problem

The conversion optimization team tracks a four-step purchase funnel: page_view, add_to_cart, checkout_start, and purchase. For each step, show how many unique users reached it and the drop-off percentage from the previous step. Break the analysis down by tag.

Summary

Users enter the funnel. Most never reach the bottom.

Practice This Problem

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