heronshoes opened a new pull request, #33654:
URL: https://github.com/apache/arrow/pull/33654
# Rationale for this change
Current implementation is always preserve column of join key. It is
convenient if columns are merged.
# What changes are included in this PR?
- Columns from left and right are marged if;
- Join key is a String or a Symbol
- Join key is nil (natural join)
- New option `left_suffix="", right_suffix=""` is introduced.
- If it is empty (by default), join key(s) are not changed.
- If it is not empty, the suffix is appended to join key(s).
# Are these changes tested?
Yes.
# Are there any user-facing changes?
There are changes when join key is a String or a Symbol.
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