08 2021 档案

mysql删除重复数据只保留一条

摘要：delete from toutiao where title in (SELECT a.title from (select title from toutiao group by title having count(title) > 1) a )and id not in (SELECT b. 阅读全文

posted @ 2021-08-19 13:44 黔人阿诺 阅读(184) 评论(0) 推荐(0)