8条命令语句学会mysql用户管理

#1创建用户 user1 密码为 abc123
create user 'user1'@'localhost' IDENTIFIED by 'abc123';
create user 'user1'@'localhost' IDENTIFIED by 'abc123';
#2用户改名 user1 改名为 user_query
rename user 'user1'@'localhost' to 'user_query'@'localhost'
#3修改用户密码 修改用户密码为 enixlin1981
set password for 'user_query'@'localhost' = password('enixlin1981');
#4将提升用户可登录的主机，允许用户从所有IP登录服务器
rename user 'user_query'@'localhost' to 'user_query'@'%'
#5将以上的user_query用户赋权 ,赋予所有权限
GRANT ALL privileges ON *.* TO 'user_query'@'%'  
#6修改用户权限，只赋予查询权限
    #第一步，先回收所有的权限
    revoke all on *.* from 'user_query'@'%'; 
    #第二步，赋予查询权限
    grant select on *.* to 'user_query'@'%'