Evaluate SQL skills with practical database challenges. Test query writing, optimization, data modeling, and the analytical thinking that separates great database developers from good ones.
30-45 minutes · Junior → Mid-Level → Senior → Lead
Write a query to find top performers by category
Write a query to find top performers by category
Optimize a slow-running report query
Design a schema for an e-commerce system
Implement a recursive query for hierarchical data
Paste your job description, get a complete assessment instantly
Challenges match your exact requirements, not generic templates
Skill breakdowns and code quality analysis for each candidate
Plagiarism detection and monitoring built-in
Paste your job description — get a complete SQL assessment in minutes.
30-45 minutes per candidate · proctored · AI-graded