Resultset获取行数和列数:
https://www.cnblogs.com/itommy/p/10610359.html
关于“怎么比较两个SQL查询语句产生的结果集是否相同”搜集到的一些资料:
https://blog.csdn.net/akv64029/article/details/101542390
Operation not allowed after ResultSet closed 结果集关闭异常:
https://blog.csdn.net/xe2415551255/article/details/80458265