mysql 在查询结果中进行二次查询

2022-08-02 10:50:17

第一次查询：查询身份证编号和出现次数

select cardid,count(cardid) as total from p_person_info group by cardid

在第一次查询结果进行二次查询：查询身份证出现次数大于1以上

select cardid from (select cardid,count(cardid) as total from p_person_info group by cardid) temp where temp.total>1

码农公寓