Higher Performing Variant

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

Domain

SQL

Difficulty

easy

Seniority

junior

Problem

We ran an A/B test with control and treatment variants. Which variant produces a higher average metric value? Return only the winning variant with its average rounded to 2 decimal places.

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.