Gabriel39 opened a new pull request, #64264:
URL: https://github.com/apache/doris/pull/64264

   ### What problem does this PR solve?
   
   Issue Number: close #xxx
   
   Related PR: #xxx
   
   Problem Summary: BE table scan only matched partition path values and 
by-name file columns by the current column name. After schema evolution 
renames, split partition keys or physical files can still use historical names 
from table-format name mapping, causing partition columns to miss split 
constants and non-partition columns to miss file schema mappings. This change 
carries name_mapping in ColumnDefinition, uses it when resolving external 
schema fields, partition path aliases, BY_NAME table-to-file mappings, and 
Paimon schema annotation.
   
   ### Release note
   
   None
   
   ### Check List (For Author)
   
   - Test: Unit Test attempted with run-be-ut.sh filter for the two added 
TableColumnMapper tests, but local thirdparty setup is incomplete: missing 
thirdparty/installed/bin/protoc and Snappy during CMake configuration. git diff 
--check passed. clang-format.sh attempted but local llvm@16 is missing.
   - Behavior changed: Yes. BE can resolve renamed table-format columns through 
name_mapping for partition constants and by-name file mappings.
   - Does this need documentation: No
   
   ### What problem does this PR solve?
   
   Issue Number: close #xxx
   
   Related PR: #xxx
   
   Problem Summary:
   
   ### Release note
   
   None
   
   ### Check List (For Author)
   
   - Test <!-- At least one of them must be included. -->
       - [ ] Regression test
       - [ ] Unit Test
       - [ ] Manual test (add detailed scripts or steps below)
       - [ ] No need to test or manual test. Explain why:
           - [ ] This is a refactor/code format and no logic has been changed.
           - [ ] Previous test can cover this change.
           - [ ] No code files have been changed.
           - [ ] Other reason <!-- Add your reason?  -->
   
   - Behavior changed:
       - [ ] No.
       - [ ] Yes. <!-- Explain the behavior change -->
   
   - Does this need documentation?
       - [ ] No.
       - [ ] Yes. <!-- Add document PR link here. eg: 
https://github.com/apache/doris-website/pull/1214 -->
   
   ### Check List (For Reviewer who merge this PR)
   
   - [ ] Confirm the release note
   - [ ] Confirm test cases
   - [ ] Confirm document
   - [ ] Add branch pick label <!-- Add branch pick label that this PR should 
merge into -->
   
   


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