QuakeWang opened a new pull request, #634:
URL: https://github.com/apache/paimon-rust/pull/634
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### Purpose
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Paimon-specific SQL handlers bypass DataFusion's logical planner and
previously used raw parser identifiers. This caused DDL and DML column handling
to behave inconsistently with DataFusion's identifier-normalization setting.
<!-- What is the purpose of the change -->
### Brief change log
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they address the issue -->
- Apply consistent identifier normalization to Paimon DDL, partition
operations, UPDATE, MERGE, and INSERT OVERWRITE.
- Preserve quoted identifiers and reject unknown or duplicate normalized
target columns.
- Add regression tests for normalization-enabled and disabled behavior.
### Tests
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- `cargo fmt --all -- --check`
- `cargo clippy --locked --all-targets --workspace --features
fulltext,vortex -- -D warnings`
- DataFusion identifier-normalization integration tests
### API and Format
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### Documentation
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updates -->
Updated `docs/src/sql.md`.
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