mysql update/delete in 子查询改写


#子查询(不支持)
update question q set q.`level`=2 where q.id in( select id from  question where id>=2111 limit 165,165);


#改写
update question q inner join ( select id from  question where id>=2111 limit 165,165) t on q.id=t.id set q.`level`=2;


#子查询(不支持)
delete from `user` where id in (
   select min(id) as id from `user` group by wx_open_id having count(1)>1
);

#改写
delete from `user` where id in (
    select id from(    
       select min(id) as id from `user` group by wx_open_id having count(1)>1
    ) t
);

 


免责声明!

本站转载的文章为个人学习借鉴使用,本站对版权不负任何法律责任。如果侵犯了您的隐私权益,请联系本站邮箱yoyou2525@163.com删除。



 
粤ICP备18138465号  © 2018-2025 CODEPRJ.COM