C:\Users\xxx>net stop mysql

C:\Users\xxx>mysqld --console --skip-grant-tables --shared-memory

mysql> flush privileges; -- 修改权限
Query OK, 0 rows affected (0.16 sec)

mysql> ALTER USER "root"@"localhost" IDENTIFIED BY "123456"; -- 修改密码
Query OK, 0 rows affected (0.08 sec)

mysql> grant all on cactidb.* to dbuser@'localhost' identified by '123';

ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement

mysql> flush privileges;

Query OK, 0 rows affected (0.01 sec)

mysql> grant all on cactidb.* to dbuser@'localhost' identified by '123';

Query OK, 0 rows affected (0.00 sec)