SQL Quiz Drills
Run SELECT in your head
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
No SQL engine needed. Sharpen your ability to READ and PREDICT SQL with quick quizzes—predict results, fill in blanks, true/false and timed drills. Ad-free, fully local.
■ No engine required. Run SELECT in your head.
SQLのエ is an iPhone app for practicing SQL in spare moments. Browser-based SQL playgrounds require sitting down at a PC; this app trades the engine for high-density questions, building real SQL skill through quick quizzes, repetition, and clear progress.
■ Who it's for
- New engineers who want SQL at their fingertips
- Analysts who need to read the SQL behind BI tools
- Anyone preparing for database/IT certification exams
- People who write SQL "by feel" and want to truly understand it
■ SQL-focused question formats
- Four-choice (fundamentals): quickly check syntax and terms
- Result-table prediction: guess the output from a table + query (our signature format)
- Fill-in-the-blank: memorize keywords
- True/False: check knowledge with rhythm
■ Learning modes
- Chapter training: basics through SELECT, WHERE, sorting, aggregates, GROUP BY, JOIN, subqueries, set operations
- Test: no explanations, just a score
- Oni (hard) training: 10 seconds per question, combos for streaks
- Daily 5: a fresh hand-picked set each day
■ Built to keep you going
- Streak (consecutive study days)
- Total queries solved and overall accuracy
- Per-chapter accuracy heatmap
- Achievement badges
■ Readable by design
- Dark theme with SQL syntax highlighting and monospaced font
- Clear result-table display
■ Privacy-first
- No account, no ads
- Works fully offline
- Learning data stays on your device (never sent out)
"10 questions a day. Run SELECT in your head." Make SQL a habit, starting today.
Note: The app does not execute real SQL. To try queries for real, use the external links (e.g., DB Fiddle) in Settings.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 2PIECE.K.K, 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
- Seller
- 2PIECE, K.K.
- Size
- 1 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2PIECE.K.K