SQL Challenge
软件开发工具
¥22.00 · 专为 iPad 设计。未针对 macOS 验证。
Feed your brain. Query up.
Learn SQL the way you will actually use it: one query at a time, against a real database, right on your phone.
SQL Challenge is a single path of original questions. Each level hands you a small database and asks for one thing, and you answer with one SELECT. A real SQLite engine ships inside the app and runs your query on the spot — no server, no signal, no waiting.
Then it runs your query again on rows you have never seen. Hard-code what was on the screen and you will hear about it. That is the whole difference between a query that looked right and a query that is right.
Free to start: the opening levels are free, then unlock the full path with a single one-time purchase. No subscription, no ads, no account.
WRITE REAL SQL
• A keyboard built for queries: a clause row for SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY and the aggregates, and a toggle that upper-cases keywords while leaving your table and column names exactly as typed
• A schema panel above the editor: every table with its columns, their types, the row counts, and the first rows to look at
• A result sheet that puts your table next to the expected one, so you can see which rows are extra, which are missing, and which column came back under the wrong name
FIVE WORLDS TO QUERY
• Five invented databases, none of them borrowed from a tutorial: an online shop, a school, a library system, an airline and a music service
• Hidden variants of the same schema — an empty table, a tie at the top, a NULL where you assumed a number, a row with nothing to join to — decide whether you answered the question or just the screen
LEARN THE RIGHT WAY
• Three tiers of hints from Tuple, a cyan beaver who is smug about engineering and on your side anyway
• A curated solution once you pass: the obvious query, the better one, and why the difference matters
• One path, no shortcuts, easy to hard: filtering and sorting, then joins, grouping and aggregates, then subqueries and common table expressions
STAY MOTIVATED
• XP, player levels, daily streaks and badges
• Six themes, dark and light
PRIVATE BY DESIGN
• Works fully offline; no account, no tracking — your progress stays on your device
• No ads, ever
评分及评论
- 此 App 尚未收到足够的评分或评论，无法显示整体评分。
docs/release-notes/1.0.2-en-US.txt
开发者“MUSTAFA GURBUZ”已表明该 App 的隐私规范可能包括下述数据处理方式。更多相关信息，请参阅 开发者隐私政策 。
未收集数据
开发者不会从此 App 中收集任何数据。
辅助功能
开发者尚未表明此 App 支持哪些辅助功能。 进一步了解
信息
- 提供者
- MUSTAFA GURBUZ
- 大小
- 13.8 MB
- 类别
- 软件开发工具
- 兼容性
设备需装有 iOS 15.0 或更高版本。
- iPhone
设备需装有 iOS 15.0 或更高版本。 - iPad
设备需装有 iPadOS 15.0 或更高版本。 - iPod touch
设备需装有 iOS 15.0 或更高版本。 - Mac
需要 macOS 12.0 或更高版本以及装有 Apple M1 或更高版本芯片的 Mac。 - Apple Vision
设备需装有 visionOS 1.0 或更高版本。
- iPhone
- 语言
- 英语
- 年龄分级
4+
- 4+
- 版权
- © 2026 Mustafa Gürbüz
