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

Canonical URL: <https://datadriven.io/problems/show-each-products-productname-rating-and-a-cleanrating-d9faa67e>

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').

## Related

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