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SQLBolt — Learn SQL with Simple Interactive Exercises
Free interactive SQL lessons: SELECT basics, filtering, joins, NULL handling and aggregate clauses, each runnable in the browser. A zero-setup first step before touching a real warehouse or local DuckDB.
At a glance
| What | Free interactive SQL lessons: SELECT basics, filtering, joins, NULL handling and aggregate clauses, each runnable in the browser. A zero-setup first step before touching a real warehouse or local DuckDB. |
|---|---|
| Where | SQL |
| Why | Zero-install practice surface for the very first hands-on lessons. |
Security scan
Last sweep 2026-10-24: 0 finding(s), 0 marked as examples.
Registry stats
| Verification | community · Oct 23, 2026 |
|---|---|
| Completeness | 58 |
| Trust multiplier | ×1.25 |
| Composite | 27.7 · adequate |
| Freshness | 1 days since last source check |
| License | Unlicense (site source) |
| Security flags | none |
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SQLBolt — Learn SQL with Simple Interactive Exercises