# File lib/rubyrep/replication_extenders/postgresql_replication.rb, line 180
      def update_sequences(
          rep_prefix, table_name, increment, offset,
          left_sequence_values, right_sequence_values, adjustment_buffer)
        left_sequence_values.each do |sequence_name, left_current_value|
          row = select_one("select last_value, increment_by from \"#{sequence_name}\"")
          current_increment = row['increment_by'].to_i
          current_value = row['last_value'].to_i
          unless current_increment == increment and current_value % increment == offset
            max_current_value =
              [left_current_value[:value], right_sequence_values[sequence_name][:value]].max +
              adjustment_buffer
            new_start = max_current_value - (max_current_value % increment) + increment + offset
            execute("alter sequence \"\#{sequence_name}\" increment by \#{increment} restart with \#{new_start}\n")
          end
        end
      end