The SQL platform that teaches you what to do next, not just what to solve.
Practice real SQL interview questions with adaptive learning, diagnostic feedback, and visible skill progress — all in one product.
254+ problems · 34+ companies · 0+ learners
How it works
Three steps from zero SQL to interview-ready.
01
Pick your track
Choose from Foundations, Interview Core, or Analytics Reporting — each track is paced for where you are right now.
02
Practice real questions
Work through SQL prompts tagged to companies that actually hire for data roles. Hints available when you are stuck — never just a raw answer.
03
Track your mastery
See which concepts you have locked in, which need revisiting, and how your answer quality trends over time.
Questions from companies that actually interview for SQL
Browse realistic SQL prompts tagged to the company contexts learners already recognize.
Try a question before you sign up
See the shape of a real prompt and the SQL answer style before opening the practice workspace.
Departments Above Average Pay
Use this Amazon scorecard to work on departments above average pay. Return each department_id whose average salary exceeds the company average salary for March 2024. Sort by department_id.
WITH march_salaries AS (SELECT e.department_id, s.amount FROM employees e JOIN salary_payments s ON e.employee_id = s.employee_id WHERE s.payment_date = DATE '2024-03-31'), department_avg AS (SELECT department_id, AVG(amount) AS avg_salary FROM march_salaries GROUP BY department_id), company_avg AS (SELECT AVG(amount) AS avg_salary FROM march_salaries) SELECT department_id FROM department_avg WHERE avg_salary > (SELECT avg_salary FROM company_avg) ORDER BY department_id;Everything you need to master SQL
A complete practice environment — real questions, adaptive guidance, diagnostic feedback, and visible progress toward SQL fluency.
Guided learning tracks
Start with the Foundations, Interview Core, or Analytics track — each question is placed in the right order for you.
Real interview questions
254 SQL problems tagged by company, difficulty, and concept — the same scenarios asked at top analytics and engineering teams.
Diagnostic SQL feedback
After each run the workspace tells you exactly what differs: column shape, row count, missing rows, extra rows, and value mismatches.
Mastery dashboard
See concept coverage, growth priorities, and the single next question most likely to advance your skill level.
Company-specific practice
Filter questions by Google, Amazon, Meta, Stripe, and 35+ other companies to match your target role and interview style.
Mock interviews
Pro learners get timed mock interview practice built from the same SQL question bank.
What people say
See what our customers have to say about their experience.
The diagnostic feedback after each query was a game changer. Instead of just "wrong answer" I could see exactly which rows were missing or mismatched.
Priya Sharma
Data Analyst, e-commerce startup
I tried other SQL question banks but always got lost without structure. The guided tracks told me exactly what to practice next and my interview confidence jumped within two weeks.
Marcus Chen
Business Intelligence Engineer
The mock interviews are what sold me on Pro. I could practice end-to-end under timed conditions and review exactly where I slowed down.
Aisha Patel
Data Science candidate
Having questions tagged by company meant I could focus my last two weeks before a Google interview entirely on the kind of queries they actually ask.
James Okonkwo
Analytics Engineer
The concept coverage tracker showed me I had zero experience with window functions. I fixed that gap in one week and passed my final round.
Sofia Reyes
Data Analyst, fintech
I appreciated that the free tier gave me plenty of real SQL practice. I could validate the product before paying. The feedback quality alone was worth upgrading.
Kevin Park
Senior Analyst, consulting
254+
SQL problems
1,200+
Active learners
40+
Companies represented
4.9/5
Average learner rating
Simple pricing for every learner
Start free with 160 real SQL problems. Upgrade to Pro for all 254 problems across 393 company scenarios.
Starter
Free
No credit card needed
160 free SQL problems
3 guided learning tracks
Progress tracking
SQL workspace with schema context
Concept coverage map
Pro
₹999
30-day pass. Annual pass: ₹7,999.
Everything in Starter
Full bank — all 254 problems
393 company scenarios
Study plan and review queue
Mock interview practice
Renew or extend anytime
Teams
Custom
Contact us for a quote
Everything in Pro
Team progress dashboard
Cohort-based onboarding
Custom learning tracks
Progress reports
Frequently asked questions
Browse through these FAQs to find answers to commonly asked questions.
Ready to master SQL?
Start free, practice real interview questions, and track your SQL progress.
