[SPARK-47500][PYTHON][CONNECT] Factor column name handling out of plan.py
#45636
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What changes were proposed in this pull request?
Factor column name handling out of
plan.py
Why are the changes needed?
there are too many parameters preprocessing in
plan.py
, e.g. the column name handling,there are multiple duplicated helper functions here and there, make it hard to follow some times.
Does this PR introduce any user-facing change?
no, just code refactor
How was this patch tested?
ci
Was this patch authored or co-authored using generative AI tooling?
no