protected static void prepareData() {
    try (Connection connection = EnvFactory.getEnv().getConnection();
        Statement statement = connection.createStatement()) {

      for (String sql : dataSet) {
        statement.execute(sql);
      }

    } catch (Exception e) {
      e.printStackTrace();
    }
  }
Test group by level without aggregation function used in select clause. The expected situation
is throwing an exception.
integration-test/src/test/java/org/apache/iotdb/db/it/aggregation/IoTDBAggregationByLevelIT.java