code: public void deleteUndoLog(String groupId, String unitId) throws SQLException {
          String sql = "DELETE FROM TXC_UNDO_LOG WHERE GROUP_ID=? AND UNIT_ID=?";
          h2DbHelper.queryRunner().update(sql, groupId, unitId);
      }
docs: 删除TXC撤销日志
  
  @param groupId groupId
  @param unitId  unitId
  @throws SQLException 数据库操作失败