select cardinfo_id,issure_date, count(1) as count from so_android_hour where issure_date>=‘2018-12-21 23:00:00‘ and issure_date<=‘2018-12-22 09:00:00‘ group by cardinfo_id having count>1;
通过字段查询是否有重复的记录
原文：https://www.cnblogs.com/huiandong/p/10159864.html
