用户管理

查询用户
use mysql
select * from user
use mydb
select * from mysql.user

– 创建用户
create user ‘zhangsan’ identified by ‘zhangsan’
– create user ‘用户名’@‘主机名’ identified by ‘密码’
create user ‘lisi’@‘localhost’ identified by ‘lisi’
create user ‘lisi’@’%’ identified by ‘lisi’
– % 主机名默认是% ，表示可以在任意主机上登录服务器，包括localhost

– 修改用户
– 修改密码
alter user ‘lisi’@‘localhost’ identified by ‘lisi2’

– 修改安全插件 mysql8中默认的是caching_sha2_password,需要修改为mysql_native_password
alter user ‘lisi’@‘localhost’ identified with mysql_native_password by ‘lisi2’

– 删除用户
drop user ‘lisi’
– drop user ‘lisi’@’%’