Crack your SQL interview with real‑world practice
Learn SQL concept by concept, then practise interview-style questions on the kind of data companies actually have: banking, ride-hailing, streaming, SaaS and a real online retailer.
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Everything you need, in one place
Built for analyst and product interviews: short lessons, lots of practice and honest feedback.
28 lessons
Beginner to Advanced, one concept at a time, each with a worked example and the mistakes people make.
308 practice questions
Warm-up, Build and Interview levels. A real SQL editor checks your answer instantly and explains the trap.
30 theory questions
The concepts interviewers ask you to explain out loud, with model answers.
4 mock tests
Timed, randomised and scored, so the real interview feels familiar.
Practise on 35 tables from real industries
The data has the mess real data has: duplicates, missing values and records that don't match. Interviewers test for exactly that.
Banking & fintech
“Which transactions were posted twice?”
Ride-hailing & food delivery
“Which drivers never completed a trip?”
Streaming & social
“Which titles has nobody watched?”
SaaS & product analytics
“How did monthly revenue change month on month?”
E-commerce, subscriptions & call centres
“What share of revenue comes from repeat customers?”
Pharma sales & incentives
“Which territories hit their quarterly target?”
Plus real data from a UK online retailer
A sample of the UCI Online Retail dataset (Chen, 2015, CC BY 4.0): real invoices, cancellations and guest checkouts.
How it works
Learn
Read a short lesson and see the idea run on real tables.
Practise
Climb from Warm-up to Interview questions. Wrong answers tell you why.
Test yourself
Take a timed mock and see exactly where to improve.
Streaks & daily goals
Earn XP for every question and keep your streak alive.
Daily challenge
One fresh interview-level question every day.
Weekly leaderboard
Resets every Monday, so anyone can reach the top.
Built by a learner, for learners
Watching SQL videos isn't the same as practising SQL
Mohit Khandelwal learned SQL from YouTube, then spent 5+ years in analytics at ZS (Amgen US), a 30+ centre healthcare network and an e-commerce analytics company. He built ChaturIQ so you can practise the questions interviews actually ask.
Your next interview has a SQL round. Be ready for it.
Free to use. Your progress is saved to your account.
Start practising free