feat: enable auto limit for Trino query runner

[bonisb]

What

Make the Trino query runner inherit from BaseSQLQueryRunner instead of BaseQueryRunner so it supports the "auto limit" feature.

Why

BaseQueryRunner reports supports_auto_limit = False and implements apply_auto_limit as a no-op. Because Trino inherited directly from BaseQueryRunner:

• the Limit 1000 toggle was hidden in the query editor (the frontend reads supports_auto_limit from the data source), and
• the apply_auto_limit query option had no effect even when explicitly set — the query was passed through unchanged.

BaseSQLQueryRunner provides a working implementation that appends LIMIT 1000 to unbounded SELECT statements (leaving statements that already have a LIMIT/OFFSET, and non-SELECT statements, untouched).

How

• Trino now extends BaseSQLQueryRunner.
• Trino uses standard ANSI LIMIT n syntax, so the default limit_query = " LIMIT 1000" works unchanged.
• Trino already overrides get_schema, so the SQL base class's _get_tables schema helpers are not used and schema loading is unaffected.

Tests

Added tests in tests/query_runner/test_trino.py covering:

• supports_auto_limit is True
• auto limit is appended to a SELECT with no limit
• an existing LIMIT is preserved
• nothing is changed when auto limit is disabled

🤖 Generated with Claude Code

[cubic-dev-ai]

No issues found across 2 files

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[greptile-apps]

Greptile Summary

This PR enables the existing SQL auto-limit behavior for Trino by changing its query-runner base class.

• Makes Trino advertise auto-limit support.
• Applies the standard LIMIT 1000 rewriting behavior to eligible queries.
• Adds focused tests for enabled, disabled, and existing-limit cases.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
redash/query_runner/trino.py	Changes Trino to inherit the shared SQL query-runner behavior; its existing schema and execution overrides remain compatible.
tests/query_runner/test_trino.py	Adds focused coverage for Trino auto-limit capability and query rewriting.

_{Reviews (2): Last reviewed commit: "Merge branch 'master' into trino-auto-li..." | Re-trigger Greptile}

[yoshiokatsuneo]

@bonisb

Thank you for your contribution !

The PR is simple enough and reasonable.
And, I confirmed that simple queries can run with Trino data source.

So, I can approve the PR.

Please note that the query hashes for existing Trino queries need to be updated.

(Ex. by running docker compose run --rm server manage query rehash )