mysql 编码/包大小/创建库/创建用户

create user 'myclient'@'%' identified by 'myclient';  //创建myclient; % 任意登入ip  密码myclient
grant select,insert,update,delete on MYDATABASE.* to myclient; //授权

show variables like 'character_set_%'; //查看字符集编码
show variables like 'collation_%'; //查看校对集编码

set character_set_client=utf8;
set character_set_connection=utf8;
set character_set_database=utf8;
set character_set_results=utf8;
set character_set_server=utf8;
set character_set_system=utf8;
set collation_connection=utf8;
set collation_database=utf8;
set collation_server=utf8;

set global max_allowed_packet=2*1024*1024; //设置数据包大小