Assessment
SQL Assessment Test
Evaluate SQL skills with AI-powered assessment tests for hiring. Covers queries, joins, aggregations, subqueries, and database design fundamentals.
The short answer
An sql assessment test for hiring typically runs 30-40 minutes, query writing, query debugging, output prediction, schema design and multiple choice, at 3 difficulty levels. Give it after the first screen and before interviews, and score it on the areas below, fixed before you see any answers, so every candidate is judged the same way.
- SELECT statements, filtering, and sorting
- JOIN types (INNER, LEFT, RIGHT, FULL, CROSS)
- Aggregation functions (GROUP BY, HAVING, COUNT, SUM, AVG)
- Subqueries and common table expressions (CTEs)
Paste a job description; Cohesyve builds the assessment and the rubric. Ten candidates free, no card.
About to take an SQL test? Practise it free →A SQL Assessment Test evaluates a candidate's ability to write queries, manipulate data, and work with relational databases. SQL is a foundational skill for Data Analysts, Data Engineers, Backend Developers, and Business Intelligence professionals. This assessment helps employers identify candidates who can efficiently extract insights from databases and work with complex data relationships.
Format
What it measures
- SELECT statements, filtering, and sorting
- JOIN types (INNER, LEFT, RIGHT, FULL, CROSS)
- Aggregation functions (GROUP BY, HAVING, COUNT, SUM, AVG)
- Subqueries and common table expressions (CTEs)
- Window functions (ROW_NUMBER, RANK, LAG, LEAD)
- Data manipulation (INSERT, UPDATE, DELETE)
- Database design and normalization concepts
- Query optimization and indexing basics
Cohesyve
Run an SQL assessment on your next opening
Cohesyve generates a unique task per candidate from your job description, with the scoring rubric attached. Questions differ for every applicant, so they cannot be shared or looked up.
Who takes it
Topics covered
Basic Queries
- SELECT and WHERE clauses
- ORDER BY and LIMIT
- String functions
- Date functions
- NULL handling
Joins & Relationships
- Multi-table JOINs
- Self-joins
- Cross joins
- Join conditions
- Handling many-to-many
Aggregation
- GROUP BY with HAVING
- Multiple aggregations
- Conditional aggregation
- Nested aggregations
- Running totals
Advanced
- Window functions
- CTEs and recursive queries
- Query performance
- Index optimization
- Transaction concepts
Why it is used
For employers
- Validate SQL proficiency before investing interview time
- Assess real query-writing ability, not just theoretical knowledge
- Compare candidates objectively on a standardized assessment
- AI-generated unique questions prevent candidates from sharing answers
- Receive detailed skill breakdowns across SQL competency areas
For candidates
- Demonstrate practical SQL skills beyond resume keywords
- Complete the assessment quickly (30-40 minutes)
- Receive a fair evaluation with role-appropriate difficulty
- Differentiate yourself with verified technical skills
Common questions
Which SQL dialect does the assessment use?
The assessment uses standard ANSI SQL, which is compatible with all major databases (PostgreSQL, MySQL, SQL Server, Oracle). Questions focus on universal SQL concepts rather than dialect-specific syntax.
Do candidates need access to a database to take the test?
No, the assessment is taken entirely through Cohesyve's online platform. Questions include interactive query exercises, output prediction, and debugging scenarios that test real SQL skills without requiring a local database setup.
How do you prevent candidates from using AI to answer SQL questions?
Cohesyve generates unique, context-specific questions for every candidate. The assessment includes practical scenarios and debugging exercises that require genuine understanding rather than pattern matching. Timed assessments and question variation make AI assistance impractical.
Cohesyve · Skill assessments for hiring
Test SQL before the first interview
Cohesyve turns a job description into a role-specific assessment with a scoring rubric. Each candidate gets a different version, so questions cannot be shared between applicants.
1,500+
assessments completed
50%
faster time-to-hire
5 min
from JD to assessment
No credit card · 10 free candidates · Plans sized to your hiring volume
For candidates
Preparing for a role like this yourself? Practise on the same AI job simulations companies use — 5 free assessments a month, no card required.
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