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fix: preserve kernel column segments#4164

Merged
ion-elgreco merged 2 commits intodelta-io:mainfrom
ethan-tyler:fix/4082-merge-camelcase-notnull
Feb 5, 2026
Merged

fix: preserve kernel column segments#4164
ion-elgreco merged 2 commits intodelta-io:mainfrom
ethan-tyler:fix/4082-merge-camelcase-notnull

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@ethan-tyler
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Description

Fix kernel to DataFusion column expression conversion to preserve exact ColumnName path segments.

Fixes #4082

Fix:
Use DataFusion ident(...) for the base column segment when converting Expression::Column, then .field(...) for remaining path segments. Preserves exact segment names, avoids SQL style normalization.

Related Issue(s)

Documentation

@github-actions github-actions Bot added binding/python Issues for the Python package binding/rust Issues for the Rust crate labels Feb 4, 2026
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codecov Bot commented Feb 5, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.39%. Comparing base (37e9e6d) to head (f8a5996).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #4164      +/-   ##
==========================================
- Coverage   76.40%   76.39%   -0.01%     
==========================================
  Files         165      165              
  Lines       46239    46227      -12     
  Branches    46239    46227      -12     
==========================================
- Hits        35327    35314      -13     
- Misses       9237     9239       +2     
+ Partials     1675     1674       -1     

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@ion-elgreco ion-elgreco merged commit f7a4bc2 into delta-io:main Feb 5, 2026
29 checks passed
@ethan-tyler ethan-tyler deleted the fix/4082-merge-camelcase-notnull branch February 5, 2026 15:17
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binding/python Issues for the Python package binding/rust Issues for the Rust crate

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Successfully merging this pull request may close these issues.

[Bug]: Merge fails on camelCase columns with nullable=False

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