-- 查看重复数据 SELECT `item_id`,COUNT(1) FROM app_wine GROUP BY `item_id` HAVING COUNT(1) > 1
-- 删除重复数据保留一条最新数据 DELETE FROM app_wine WHERE id NOT IN ( SELECT t.min_id FROM ( -- 过滤出重复多余的数据,比如,如果所有记录中存在1条记录是user_name=zhangsan的,那么就取出它; -- 如果所有记录中存在多条记录是user_name=lisi的,那么只取其中1条,其他的不查询出来 SELECT MIN(id) AS min_id FROM app_wine GROUP BY detail_url ) t )
标签:删除,--,app,Mysql,数据,id,SELECT,wine From: https://www.cnblogs.com/wuyongcong/p/17534383.html