jorisvandenbossche commented on PR #36846:
URL: https://github.com/apache/arrow/pull/36846#issuecomment-1741175759
And on the `concat_tables` keyword, another idea I mentioned above was to
combine the `promote` ("unify_schemas") and `field_merge_options` in a single
keyword. This could have options False/"none" (no unification / promotion, only
exactly the same schemas are allowed, the default), "default" (unify schemas,
with only null to any type promotion) and "permissive" (unify schemas, with
permissive type promotion)
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