Show each product's product_name, rating, and a clean_rating column that converts any 0 rating to NU

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

Domain

SQL

Difficulty

medium

Problem

Show each product's product_name, rating, and a clean_rating column that converts any 0 rating to NULL using NULLIF (since 0 means 'not rated').

Practice This Problem

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