user mysql; # switch databases
select * from user \ G; # all user tables
alter user 'root' @ '%' identified by 'Test & 1234' # modify all hosts (%) of the root login account password
user mysql; # switch databases
select * from user \ G; # all user tables
alter user 'root' @ '%' identified by 'Test & 1234' # modify all hosts (%) of the root login account password