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

Domain

SQL

Difficulty

easy

Seniority

L3

Problem

Which experiments have participants in both 'variant_a' and 'variant_b'? Return the experiment name for every experiment that has at least one record in each variant.

Summary

One user, multiple experiments.

Practice This Problem

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