Market Share

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

Domain

SQL

Difficulty

hard

Problem

Strategy needs each product category's share of total revenue for the investor deck. For each category, compute its percentage of total transaction revenue against the platform-wide total. Return the category and its revenue share.

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.