mysql 查找出重复数据 然后把删除重复的数据 保留一条_百度知道
最佳答案: delete from temp where id in (select id from (select max(id) as id,count(url) as count from temp group by url having count >1 order ...
MySQL中删除多余的重复记录 - Milton - 博客园
2017年1月28日 - MySQL中删除多余的重复记录 检查重复记录-- 检查重复code1 select count(identity...You can't specify target table 'xxxxx' for update in FROM cla...