# File lib/data_migrate/status_service.rb, line 18
    def dump(stream)
      unless @connection.table_exists?(table_name)
        stream.puts "Data migrations table does not exist yet."
        return
      end
      sql = "SELECT version FROM #{DataMigrate::DataMigrator.schema_migrations_table_name}"
      db_list = ActiveRecord::Base.connection.select_values(sql)
      output(stream, db_list)
    end