Turned Away

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

Domain

SQL

Difficulty

medium

Seniority

L3

Problem

The API gateway team is reviewing which clients have been rate-limited. List every client that has had at least one request blocked.

Summary

Every gate keeps a record of who it stopped.

Practice This Problem

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