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Description

Ran into this edge case where if writing to a table that has a generated column defined by a SQL function (say, as a partition column, to_char(timestamp), the write builder will fail since a default SessionState does not have UDFs unless new_with_default_features is specified.

Related Issue(s)

Regression from #3816

Documentation

Left as draft since I want to write a regression test to assert this doesn't happen again

@github-actions github-actions bot added the binding/rust Issues for the Rust crate label Oct 14, 2025
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ACTION NEEDED

delta-rs follows the Conventional Commits specification for release automation.

The PR title and description are used as the merge commit message. Please update your PR title and description to match the specification.

@abhi-airspace-intelligence abhi-airspace-intelligence changed the title Enable default features on WriteBuilder datafusion context fix: enable default features on WriteBuilder datafusion context Oct 14, 2025
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codecov bot commented Oct 16, 2025

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.75%. Comparing base (d950bf2) to head (efb6fd8).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #3850      +/-   ##
==========================================
- Coverage   73.77%   73.75%   -0.02%     
==========================================
  Files         151      151              
  Lines       39139    39117      -22     
  Branches    39139    39117      -22     
==========================================
- Hits        28873    28850      -23     
- Misses       8995     8997       +2     
+ Partials     1271     1270       -1     

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@roeap
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roeap commented Oct 17, 2025

@abhi-airspace-intelligence - This might be also addressed in #3860 where we centralise creating the sessions a bit more.

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