You must SET PASSWORD before executing this statement的解决方法

参考前文利用安全模式成功登陆，然后修改密码，等于给MySql设置了密码。登陆进去后，想创建一个数据库测试下。得到的结果确实： 

ERROR 1820 (HY000): You must SET PASSWORD before executing this statement 

非常诡异啊，明明用密码登陆进去了，怎么还提示需要密码。 
参考官方的一个文档，见http://dev.mysql.com/doc/refman/5.6/en/alter-user.html。如下操作后就ok了： 

mysql> create database yan1; 
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement 
mysql> SET PASSWORD = PASSWORD('123456'); 
Query OK, 0 rows affected (0.03 sec) 

mysql> create database yan1; 
Query OK, 1 row affected (0.00 sec) 


也就是用mysql> SET PASSWORD = PASSWORD('123456');这句话重新设置一次密码！大爷的，真费劲啊。 
这位仁兄也遇到了相同的问题。 


最近新装好的mysql在进入mysql工具时，总是有错误提示: 

# mysql -u root -p 
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) 
或者 
# mysql -u root -p password 'newpassword' 
Enter password: 
mysqladmin: connect to server at 'localhost' failed 
error: 'Access denied for user 'root'@'localhost' (using password: YES)' 

现在终于找到解决方法了。本来准备重装的，现在不必了。 
方法操作很简单，如下： 
# /etc/init.d/mysql stop 
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking & 
# mysql -u root mysql 
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root' and host='root' or host='localhost';//把空的用户密码都修改成非空的密码就行了。 
mysql> FLUSH PRIVILEGES; 
mysql> quit # /etc/init.d/mysqld restart 
# mysql -uroot -p 
Enter password: <输入新设的密码newpassword> 

MySql5.6操作时报错：You must SET PASSWORD before executing this statement解决 
mysql> SET PASSWORD = PASSWORD('123456'); 
Query OK, 0 rows affected (0.03 sec) 
mysql> create database roger; 
Query OK, 1 row affected (0.00 sec) 
也就是用mysql> SET PASSWORD = PASSWORD('123456');这句话重新设置一次密码！