LaurinBrechter opened a new pull request, #40963:
URL: https://github.com/apache/superset/pull/40963
### SUMMARY
The SQL executor's disallowed-function check used substring matching on the
raw SQL string, causing false positives when column or table names contained a
disallowed function name as a substring (e.g. `skilllevel` triggering the
`kill` blocklist for MySQL).
This change uses `SQLScript.check_functions_present()` — the same AST-based
approach already used in `sql_lab.py` and `models/helpers.py` — so only actual
function invocations are blocked.
### BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF
N/A — backend-only change.
### TESTING INSTRUCTIONS
1. Configure `DISALLOWED_SQL_FUNCTIONS` with `{"mysql": {"kill"}}` in
`superset_config.py`
2. Run a query that references a column like `skilllevel` — it should succeed
3. Run `SELECT KILL(123)` — it should be rejected with an error mentioning
`kill`
4. Run unit tests:
```bash
pytest
tests/unit_tests/sql/execution/test_executor.py::test_execute_disallowed_function_not_matched_in_identifiers
tests/unit_tests/sql/execution/test_executor.py::test_execute_disallowed_mysql_kill_function
-v
```
### ADDITIONAL INFORMATION
- [ ] Has associated issue:
- [ ] Required feature flags:
- [ ] Changes UI
- [ ] Includes DB Migration (follow approval process in
[SIP-59](https://github.com/apache/superset/issues/13351))
- [ ] Migration is atomic, supports rollback & is backwards-compatible
- [ ] Confirm DB migration upgrade and downgrade tested
- [ ] Runtime estimates and downtime expectations provided
- [ ] Introduces new feature or API
- [ ] Removes existing feature or API
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