mysql8.1 版本 You are not allowed to create a user with GRANT

background:

jupyter notebook uses python to operate mysql database

Error: 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

Then open mysql8 commandline client 

>GRANT ALL PRIVILEGES ON *.* TO 'your_database'@'%' IDENTIFIED BY 'your_password';
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IDENTIFIED BY 'your_password'' at line 1

Found out after inquiry

For mysql8 version, user permissions need to be granted first

1. #Create a user first

2. create user 'username'@'%' identified by '123456';

3. #Authorize again

4. grant all privileges on *.* to 'username'@'%' with grant option;

The exception information when granting is as follows:

ERROR 1410 (42000): You are not allowed to create a user with GRANT

 You can use Windows powershell 

First switch to the mysql bin path and then operate

PS F:\IT\software\mysql8\bin> .\mysql
ERROR 1045 (28000): Access denied for user 'ODBC'@'localhost' (using password: NO)
PS F:\IT\software\mysql8\bin> .\mysql -u root -p

password:*************

mysql> GRANT ALL PRIVILEGES ON *.* TO 'your_username'@'localhost';
Query OK, 0 rows affected (0.00 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)