mysql>exit;
@>mysql -u cplusplus -p
@>输入密码
mysql>登录成功

//登录MYSQL
@>mysql -u root -p
@>密码
//首先为用户创建一个数据库(cplusplusDB)
mysql>create database cplusplusDB;
//授权cplusplus用户拥有cplusplusDB数据库的所有权限。
>grant all privileges on cplusplusDB.* to cplusplus@localhost identified by 'cplusplus.me';
//刷新系统权限表
mysql>flush privileges;
mysql>其它操作

mysql>grant select,update on cplusplusDB.* to cplusplus@localhost identified by 'cplusplus.me';
//刷新系统权限表。
mysql>flush privileges;

@>mysql -u root -p
@>密码
mysql>DELETE FROM user WHERE User="cplusplus" and Host="localhost";
mysql>flush privileges;

mysql>drop database cplusplusDB;

@>mysql -u root -p
@>密码
mysql>update mysql.user set password=password('新密码') where User="cplusplus" and Host="localhost";
mysql>flush privileges;

mysql> INSERT INTO mysql.user(Host,User,Password) VALUES('localhost', 'sun', password('sun123456'));

mysql> FLUSH PRIVILEGES;

#1364 – Field ‘ssl_cipher' doesn't have a default value

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

sql_mode=NO_ENGINE_SUBSTITUTION

mysql> GRANT ALL ON sun.* to sun@localhost identified BY 'sun123456';
mysql> FLUSH PRIVILEGES;