Fix Trino parameterized type mapping

[nmurrell07]

Trino columns with parameterized types like timestamp(0) or decimal(10,2) were not being mapped correctly because TRINO_TYPES_MAPPING only contains base type keys without parameters.

This fix adds a _map_trino_type helper function that:

1. First tries direct lookup in TRINO_TYPES_MAPPING
2. If not found and the type contains parentheses, strips the parameters and looks up just the base type (e.g., 'timestamp' from 'timestamp(0)')
3. Returns None if no mapping is found

This ensures columns with parameterized types are correctly mapped to their Redash equivalents.

[cubic-dev-ai]

No issues found across 1 file

[greptile-apps]

Greptile Summary

The PR fixes Redash type detection for parameterized Trino column types by retrying failed mappings with the type parameters removed.

• Adds _map_trino_type with direct, parameter-stripped, and unknown-type paths.
• Uses the helper when translating Trino cursor metadata into Redash columns.

Confidence Score: 5/5

The PR appears safe to merge because parameterized types now resolve through their existing base-type mappings without changing unsupported-type behavior.

The helper preserves exact mappings first, safely handles None, strips only parameters after a failed lookup, and is called with the Trino driver's string type codes.

Important Files Changed

Filename	Overview
redash/query_runner/trino.py	Correctly normalizes parameterized cursor type names while preserving direct mappings and existing unknown-type behavior.

_{Reviews (1): Last reviewed commit: "Merge branch 'master' into fix-trino-par..." | Re-trigger Greptile}

[yoshiokatsuneo]

@nmurrell07

Can you fix the lint error by running black ?