mysql max函數使用的注意點

SELECT id,visits FROM `zentao`.`zt_user`

SELECT id,max(visits) FROM `zentao`.`zt_user`

如下圖：結果查出的id不是max對應的id

 

 應該改為

SELECT id,visits FROM `zentao`.`zt_user` where visits = (SELECT max(visits) FROM `zentao`.`zt_user`) limit 1

SELECT id,visits FROM `zentao`.`zt_user` order by visits desc limit 1