Interview Preparation
Master SQL in your next interview
Solve real interview questions, get instant feedback, and become proficient in SQL. No fluff, just focused practice.
How It Works
Choose a Problem
Pick from 150+ curated SQL questions based on difficulty and topic.
Write Your Query
Use our clean, professional editor to write and test your SQL queries.
Get Instant Results
See immediate feedback and results against real database schemas.
Track Progress
View solutions, learn from others, and track your mastery over time.
Practice by Difficulty
Start where you are, progress to mastery.
Fundamentals
Learn SELECT, WHERE, ORDER BY basics with clear schema.
Real-World
Joins, aggregations, subqueries, and complex filters.
Advanced
Window functions, CTEs, and optimization challenges.
Learn by Topic
Structured learning paths for every skill level.
SELECT & FROM
Master the basics
Filtering & Sorting
WHERE & ORDER BY
JOINs
Combine multiple tables
Aggregations
GROUP BY & aggregate functions
Subqueries
Nested queries & logic
Advanced
Window functions & CTEs
Why Choose SQL Interview Lab?
Distraction-Free Editor
Clean, minimal interface focused on problem-solving, not clutter.
Instant Feedback
Run queries and see results in real-time against actual schemas.
Learn from Solutions
View optimal solutions and understand the "why" behind them.
Works Everywhere
Practice on any device with our responsive, modern interface.
Ready to Ace Your SQL Interview?
Start solving problems and track your progress today.