user mysql; # 切换数据库
select * from user \G; # 显示所有用户表
alter user \'root\'@\'%\' identified by \'Test&1234\' # 修改所有主机(%)的root登录账户密码
user mysql; # 切换数据库
select * from user \G; # 显示所有用户表
alter user \'root\'@\'%\' identified by \'Test&1234\' # 修改所有主机(%)的root登录账户密码
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