我按照以下文档升级ubuntu里的mysql选择的是5.7 但是mysql -V查询版本还是5.5
https://www.jianshu.com/p/75c07c0c9779
执行sudo apt-get install mysql-server时
说已是最新版本
Reading package lists... Done
Building dependency tree
Reading state information... Done
mysql-server is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
但是mysql -V查询版本还是5.5
求教
