# File lib/rubyrep/replication_extenders/mysql_replication.rb, line 262
      def clear_sequence_setup(rep_prefix, table_name)
        sequence_table_name = "#{rep_prefix}_sequences"
        if tables.include?(sequence_table_name)
          trigger_name = "#{rep_prefix}_#{table_name}_sequence"
          trigger_row = select_one("select * from information_schema.triggers\nwhere trigger_schema = database()\nand trigger_name = '\#{trigger_name}'\n")
          if trigger_row
          execute "DROP TRIGGER `#{trigger_name}`"
          execute "delete from #{sequence_table_name} where name = '#{table_name}'"
          unless select_one("select * from #{sequence_table_name}")
            # no more sequences left --> delete sequence table
            drop_table sequence_table_name.to_sym
          end
        end
      end
    end