Still Standing

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

Domain

SQL

Difficulty

medium

Seniority

L3

Problem

We're auditing which API tokens are still carrying live traffic. Surface the 5 busiest tokens that haven't expired, where a token counts as unexpired if it has no expiration date set or its expiration is still in the future, and show each token with its issuance date.

Summary

The busiest keys are the ones that never had a deadline.

Practice This Problem

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