Selected work
Studio projects Learning & practice

Queryloom

A SQL practice studio spanning Core SQL, PostgreSQL, T-SQL and Oracle/PLSQL.

Live · the site serves the full bank; the repository's own editorial review is still open, and says so

What can be checked

2,240

exercises, graded deterministically across four dialects

Reason

SQL practice sites teach one dialect and grade by string comparison, so a correct answer written differently fails.

Move

Local, deterministic verification in the browser — 896 exercises execute real SQL on an in-browser engine, the rest are graded structurally — with the four dialects held as separate tracks.

Result

Content v3.1.0 is public and serves 2,240 exercises. The repository snapshot still marks its protected records DRAFT pending human editorial review — the boundary is recorded, not hidden.

What was built

The Queryloom practice studio on a desktop screen, with a SQL exercise open beside its editor.
The practice studio at desktop width.Live capture, preserved in the builds.samirkhan.net catalogue (commit 2778077) · verified 2026-08-23
Queryloom on a phone, with an exercise and its verification state.
The same exercise on a phone.Live capture, preserved in the builds.samirkhan.net catalogue (commit 2778077) · verified 2026-08-23

Where to get it

LiveOpen Queryloom

Source: the project's own repository record

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Start with the reason. We can work out the right size of move from there.

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