DQ Score Spread

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

Each table's data quality total is the sum of fail percentages across all its rules. What is the difference between the table with the highest total and the table with the lowest total?

Summary

The spread in data quality scores.

Practice This Problem

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