docs: private static void truncateUsers(String tableName, Statement ddlStatement, Connection connection) throws SQLException {
      try (PreparedStatement preparedStatement = connection.prepareStatement("delete from users where login <> ?")) {
        preparedStatement.setString(1, "admin");
        preparedStatement.execute();
        // commit is useless on some databases
        connection.commit();
      }
      // "admin" is not flagged as root by default
      try (PreparedStatement preparedStatement = connection.prepareStatement("update users set is_root=?")) {
        preparedStatement.setBoolean(1, false);
        preparedStatement.execute();
        // commit is useless on some databases
        connection.commit();
      }
    }