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fix(sql): preserve quote information during identifier normalization #18033

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Merged
merged 1 commit into from
Jun 3, 2025

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@dantengsky dantengsky commented May 29, 2025

I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/

Summary

This commit fixes an issue where quoted identifiers lost their quote information during normalization.

Added unit tests to verify the fix and prevent regression:

  • Test SQL to AST to SQL conversion preserves quotes
  • Test normalize_identifier function preserves quotes
  • Test multiple normalizations preserve quotes

may fix: issue #18031

Tests

  • Unit Test
  • Logic Test
  • Benchmark Test
  • No Test - Explain why

Type of change

  • Bug Fix (non-breaking change which fixes an issue)
  • New Feature (non-breaking change which adds functionality)
  • Breaking Change (fix or feature that could cause existing functionality not to work as expected)
  • Documentation Update
  • Refactoring
  • Performance Improvement
  • Other (please describe):

This change is Reviewable

This commit fixes an issue where quoted identifiers lost their quote information
during normalization.

Added unit tests to verify the fix and prevent regression:
- Test SQL to AST to SQL conversion preserves quotes
- Test normalize_identifier function preserves quotes
- Test multiple normalizations preserve quotes
@github-actions github-actions bot added the pr-bugfix this PR patches a bug in codebase label May 29, 2025
@dantengsky dantengsky marked this pull request as ready for review June 3, 2025 02:13
@dantengsky dantengsky requested a review from zhang2014 June 3, 2025 02:15
@zhang2014 zhang2014 merged commit 9b05067 into databendlabs:main Jun 3, 2025
577 of 594 checks passed
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