Noisiest Tables by DQ Failures

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

We run data quality checks against various tables. For each table, show the count of failed checks (where passed is false) and the highest failure percentage among those checks. Rank sorted from most failures to least, and skip tables with zero failures.

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.