CREATE USER user [IDENTIFIED BY [PASSWORD] 'password']
    [, user [IDENTIFIED BY [PASSWORD] 'password']] ...
			
			

CREATE USER 'test'@'xxx.xxx.xxx.xxx' IDENTIFIED BY  'your_password';
			

CREATE USER 'root'@'192.168.1.%' IDENTIFIED BY 'password';
			

add a new user by grant

			
GRANT ALL PRIVILEGES ON opencart.* TO 'neo'@'localhost' IDENTIFIED BY 'chen' WITH GRANT OPTION;

GRANT ALL PRIVILEGES ON *.* TO 'neo'@'localhost' IDENTIFIED BY 'chen' WITH GRANT OPTION;

FLUSH PRIVILEGES;
			
			

MySQL 8.0

			
mysql> CREATE USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'pMQiEge1ikst7S_6tlXzBOmt_4b';
Query OK, 0 rows affected (0.06 sec)

mysql> grant all on *.* to 'root'@'%';
Query OK, 0 rows affected (0.11 sec)

			
			

DROP USER user [, user] ...
			

			
mysql> drop user 'root'@'%';
Query OK, 0 rows affected (0.02 sec)
			
mysql> drop user admin@'localhost';
Query OK, 0 rows affected (0.00 sec)

mysql> drop user admin@'127.0.0.1';
Query OK, 0 rows affected (0.00 sec)
			
			

判断用户是否存，存在再删除

			
DROP USER IF EXISTS 'nacos'@'localhost';			
			
			

RENAME USER old_user TO new_user [, old_user TO new_user] ...
			

mysql 5.7 之前的版本

SET PASSWORD FOR 'bob'@'%.loc.gov' = PASSWORD('newpass');

SET PASSWORD FOR 'root'@'%' = PASSWORD('co2uqAMAho1aSOS62146Xoci6ogu4I');
			

MySQL 5.7 之后

ALTER USER 'root'@'localhost' IDENTIFIED BY 'your_password';		
			

			
mysql> ALTER user 'root'@'%' IDENTIFIED BY 'test';
Query OK, 0 rows affected (0.01 sec)

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