Disabled Flag Ratio

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

Domain

SQL

Difficulty

medium

Seniority

junior, mid

Problem

A rollout on January 10, 2026 disabled several feature flags at once, and the release manager wants to know how widespread the impact was. Among flags updated on that date, what fraction are disabled? Return a single decimal value.

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.