return null;
return BooleanValue.FALSE;
  public JdbcResultResource query(String sql,				  @Optional("MYSQLI_STORE_RESULT") int resultMode)  {    try {      Value value = real_query(sql);      if (value instanceof JdbcResultResource)        return (JdbcResultResource) value;    } catch (Exception e) {      log.log(Level.FINE, e.toString(), e);    }    return null;  }