ERROR 1396 (HY000): Operation CREATE USER failed for ‘xxx‘@‘%‘

CREATE USER ‘xxx’@’%’ IDENTIFIED BY ‘xxxxxxx’;

ERROR 1396 (HY000): Operation CREATE USER failed for ‘xxx’@’%’

解决办法：
drop user ‘xxx’@’%’;
flush privileges;

然后再次
CREATE USER ‘xxx’@’%’ IDENTIFIED BY ‘xxxxxxx’;
问题解决