2020年1月17日
mysql根据两个字段查询重复的记录
摘要： select * from user_activity group by user_id,activity_id having count(*) > 1 select * from white_list group by num_code,activity_id having count(*) > 阅读全文
posted @ 2020-01-17 13:42 panchanggui 阅读(4545) 评论(0) 推荐(0) 编辑