slfan1989 opened a new pull request, #1263:
URL: https://github.com/apache/paimon-rust/pull/1263
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### Purpose
Linked issue: closes #1262
Fix MERGE clauses containing OR incorrectly processing rows already handled
by an earlier clause, causing duplicate inserts or UPDATE errors.
<!-- What is the purpose of the change -->
### Brief change log
- Parenthesize matched and unmatched clause predicates before combining
them with earlier-clause exclusions using AND.
- Add regression tests for UPDATE/DELETE clauses and INSERT clauses
on ordinary and Data Evolution tables.
### Tests
- Confirmed both new regression tests fail before the fix.
### API and Format
No.
### Documentation
No.
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