instance method _update_row

# File activerecord/lib/active_record/persistence.rb, line 895
      def _update_row(attribute_names, attempted_action = "update")
        returning_columns = self.class.with_connection do |c|
          if c.supports_update_returning?
            self.class._returning_columns_for_update(c)
          else
            []
          end
        end

        if returning_columns.present?
          result = self.class._update_record_with_result(
            attributes_with_values(attribute_names),
            _query_constraints_hash,
            returning_columns
          )

          returning_values = result.rows.first

          returning_columns.zip(returning_values).each do |column, value|
            _write_attribute(column, value)
          end if returning_values.present?

          result.affected_rows
        else
          result = self.class._update_record(
            attributes_with_values(attribute_names),
            _query_constraints_hash,
          )

          result
        end
      end