Method num_rows

cpp/src/arrow/acero/swiss_join_internal.h:490–492

  }
  int64_t num_keys() const { return map_.keys()->num_rows(); }
  int64_t num_rows() const {
    return no_duplicate_keys_ ? num_keys() : row_offset_for_key_[num_keys()];
  }

  uint32_t payload_id_to_key_id(uint32_t payload_id) const;