You must SET PASSWORD before executing this statement的解决方

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。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): Aess 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: 'Aess 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 s
# mysqld_safe --user=mysql --skip-grant-tables --skip-working &
# 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！