Function PrependInvalidColumn

cpp/src/arrow/compute/kernels/vector_sort_internal.h:511–514

template <typename T>
Result<T> PrependInvalidColumn(Result<T> res) {
  if (res.ok()) return res;
  return res.status().WithMessage("Invalid sort key column: ", res.status().message());
}

// Return the field indices of the sort keys, deduplicating them along the way
Result<std::vector<SortField>> FindSortKeys(const Schema& schema,