fix(connector): use public strip_trailing_semicolon in dry_run paths

[Bartok9]

Summary

• main currently imports strip_trailing_semicolon but still calls _strip_trailing_semicolon in DataFusionConnector.dry_run and SnowflakeConnector.dry_run.
• That yields ruff F821 + unit NameError on every fresh PR merge queue check (seen on fix(engine): skip non-dict models/views when collecting names #2546–fix(dbt): skip unusable models/columns in seed payloads #2549).
• One-line rename at both call sites to the already-imported public helper.

Test plan

• Wren SDK CI lint + unit on this PR
• Confirm fix(engine): skip non-dict models/views when collecting names #2546–fix(dbt): skip unusable models/columns in seed payloads #2549 go green after rebase/recheck once this lands

Summary by CodeRabbit

• Bug Fixes
  • Improved SQL dry-run validation for DataFusion and Snowflake connections.
  • Trailing semicolons are now handled consistently, helping prevent unnecessary validation failures when previewing or checking SQL statements.
  • Existing dry-run error handling and query metadata remain unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: fd7432b8-5d1a-47d8-ab51-ef51ad761631

📥 Commits

Reviewing files that changed from the base of the PR and between 2b0b335 and 0c68f86.

📒 Files selected for processing (2)

• core/wren/src/wren/connector/datafusion.py
• core/wren/src/wren/connector/snowflake.py

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Walkthrough

DataFusion and Snowflake dry-run methods now use strip_trailing_semicolon(sql) instead of their prior local helper before processing SQL.

Changes

SQL normalization

Layer / File(s)	Summary
Dry-run semicolon handling core/wren/src/wren/connector/datafusion.py, core/wren/src/wren/connector/snowflake.py	DataFusion and Snowflake dry-run paths use the shared strip_trailing_semicolon helper before engine dry-run and cursor description calls.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related issues

• Strip trailing semicolon on dry_run / EXPLAIN / describe across connectors #2498 — Covers the shared strip_trailing_semicolon migration for DataFusion and Snowflake dry-run paths.

Possibly related PRs

• Canner/WrenAI#2480 — Refactors connectors to use the shared semicolon-stripping helper.
• Canner/WrenAI#2506 — Updates the DataFusion dry-run path with the same semicolon-stripping behavior.
• Canner/WrenAI#2507 — Updates Snowflake dry-run semicolon handling.

Suggested reviewers: goldmedal

Poem

A bunny trims SQL with care,
One shared helper hops everywhere.
DataFusion’s query runs clean,
Snowflake’s describe stays serene.
Semicolons tucked away—
A tidy trail for tests today!

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: switching dry_run paths to the public strip_trailing_semicolon helper.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[goldmedal]

Thanks @Bartok9