Query Dojo: SQL Practice
Interview Prep & MySQL Queries
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Walk into your SQL interview ready. Drill 85 interview-style questions, rehearse timed mock interviews, and brush up with 79 bite-size lessons.
Walk into your SQL interview ready.
Query Dojo is SQL interview practice that fits in a few minutes a day. Drill the classic questions, rehearse under a real interview clock, and see exactly what is wrong when a query fails.
PRACTICE THE CLASSIC QUESTIONS
85 interview-style SQL challenges, from finding the runner-up salary to top earners per department, monthly retention, login streaks, running totals and medians. Every query runs on a real database, right on your phone.
REHEARSE UNDER A REAL CLOCK
Timed mock interviews: 25 minutes, 4 questions, no hints. Finish with a readiness score out of 100, so you know where you stand before the real thing.
SEE EXACTLY WHY AN ANSWER IS WRONG
Every run is checked against the expected result. When it is off, you see what is missing or extra, from columns to rows. Hints and full solutions are there when you are stuck.
BUILD QUERIES WITHOUT A KEYBOARD
Tap tiles to build real queries, put lines in the right order, or type from scratch.
RELEARN WHAT YOU FORGOT
79 bite-size lessons, from SELECT and JOINs to window functions, CTEs, gaps and islands, and finding the median.
A PLAN FOR YOUR LEVEL
Tell us where you are and get a 4-week belt plan with the topics to focus on first.
EARN YOUR BLACK BELT
Every challenge and lesson moves you up, from white belt to black belt and beyond, with streaks to keep you consistent.
A PLAYGROUND FOR EVERYTHING ELSE
Run any SQL against 4 sample databases. Every run is rolled back, so experiment freely.
Query Dojo Premium is an auto-renewing subscription, billed monthly or yearly. Payment is charged to your Apple ID at confirmation. It renews automatically unless canceled at least 24 hours before the end of the current period, and you can manage or cancel it in your App Store account settings.
Terms: https://querydojo.pages.dev/terms
Privacy: https://querydojo.pages.dev/privacy
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Our biggest update yet, built around getting you ready for your SQL interview.
• A completely new look and a new icon
• Build queries by tapping tiles or ordering lines, no keyboard needed
• 16 new lessons, now 79 in total: window frames, percent of total, growth rates, the median, gaps and islands and more
• A 4-week belt plan matched to your level
• Black belt is no longer the end: earn up to 10 dans
• Code now shows != and >= exactly as you type them
• Fixes to several challenges and lessons, so correct answers always pass
The developer, Rasim Salimov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 9.3 MB
- Category
- Education
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SQL Master Monthly Subscription 8,95 €
- SQL Master Yearly Subscription 59,99 €
- Provider
Rasim Salimov
- Rasim Salimov has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © Salimov Studios