code: private DDF sql2ddf(String sqlCommand, String errorMessage) throws DDFException {
      try {
        return this.getManager().sql2ddf(String.format(sqlCommand, "{1}"),
            new SQLDataSourceDescriptor(sqlCommand, null, null, null, this
                .getDDF().getUUID().toString()));
  
      } catch (Exception e) {
        throw new DDFException(String.format(errorMessage, this.getDDF().getTableName()), e);
      }
    }
docs: ///// Execute SQL command on the DDF ///////