code: public List<UndoLogDO> getUndoLogByGroupAndUnitId(String groupId, String unitId) throws SQLException {
          String sql = "SELECT * FROM TXC_UNDO_LOG WHERE GROUP_ID = ? and UNIT_ID = ?";
          return h2DbHelper.queryRunner().query(sql, rs -> {
              List<UndoLogDO> undoLogDOList = new ArrayList<>();
              while (rs.next()) {
                  UndoLogDO undoLogDO = new UndoLogDO();
                  undoLogDO.setSqlType(rs.getInt("SQL_TYPE"));
                  undoLogDO.setRollbackInfo(rs.getBytes("ROLLBACK_INFO"));
                  undoLogDO.setUnitId(rs.getString("UNIT_ID"));
                  undoLogDO.setGroupId("GROUP_ID");
                  undoLogDO.setCreateTime(rs.getString("CREATE_TIME"));
                  undoLogDOList.add(undoLogDO);
              }
              return undoLogDOList;
          }, groupId, unitId);
      }
docs: 获取某个事务下具体UNIT的TXC撤销日志
  
  @param groupId groupId
  @param unitId  unitId
  @return undo log list
  @throws SQLException 数据库操作失败