instance method affected_rows

# File activerecord/lib/active_record/connection_adapters/mysql2/database_statements.rb, line 126
          def affected_rows(raw_result)
            if raw_result.is_a?(ActiveRecord::Result)
              raw_result.affected_rows
            else
              affected_rows = raw_result.size
              free_raw_result(raw_result)
              affected_rows
            end
          end