New

- SQL Playground: a new red-and-black glass-style screen with an SQL editor (syntax highlighting, autocomplete for local tables and columns, Ctrl + Enter to run), result stats (status, statement type, rows, rows affected, time) and a Table / JSON view of the result.

- Sample query library: 34 ready-to-run queries in 6 groups - Read data, Aggregates, Advanced analytics, Write data (DML), Parameters & safety, and Error scenarios.

- Shows the new component features: Parameters (? placeholders), ReadOnly mode, ErrorMessage, RowCount, RowsAffected, StatementType and DurationMs.

- Data Check screen: reads the same data with a local aggregate and with ExecuteQuery and compares every row and value, plus the row count of all six local tables, to show that no data is lost.

- Sample data: "Sync sample data" now fills the server with demo groups, subjects, teachers, students, subject-teacher links and marks before syncing, so every sample query returns data. Rows are only added when they do not exist yet, so it is safe to press again.

- Responsive layout for phone, tablet and desktop.

- Footer: "Made with ❤️ using OutSystems."

Improvements and fixes

- Removed duplicate sample queries.

- Fixed the "Insert a New Student" sample (it now provides the Id, which LocalStudents needs).

- Fixed the "Delete a Subject-Teacher Association" sample so it no longer depends on hardcoded IDs.

- Removed fixed delays (1 and 5 seconds) when opening the editor and showing results.

- Results are rendered as plain text, so data from the database cannot inject HTML.

- Styling moved from inline styles to theme CSS classes.

Notes

- The demo screens are open to anonymous users, and "Sync sample data" writes demo rows to the demo's own server entities.

- Tested in the browser (OutSystems 11 Personal Environment). The native mobile build has not been tested on a device yet.