mysql 数据库 角色，库，权限 备份恢复数据库

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#角色，库，权限
GRANT USAGE ON * . * TO 'acore_2'@'localhost' IDENTIFIED BY 'acore_123456' WITH MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 ;

CREATE DATABASE `ac_world_2` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

CREATE DATABASE `ac_characters_2` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

CREATE DATABASE `ac_auth_2` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

GRANT ALL PRIVILEGES ON `ac_world_2` . * TO 'acore_2'@'localhost' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON `ac_characters_2` . * TO 'acore_2'@'localhost' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON `ac_auth_2` . * TO 'acore_2'@'localhost' WITH GRANT OPTION;

#备份数据库
mysqldump -uacore_2 -pacore_123456  ac_world_2 >ac_world_2.sql;

#恢复数据库
mysql -uacore_2 -pacore_123456 ac_world_2 <ac_world_2.sql;

#删除数据库
drop database ac_world_2;
drop database ac_characters_2;
drop database ac_auth_2;