Mysql学习在linux安装mysql重启提示You must SET PASSWORD before executing this statement的解决方法

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本文介绍了Mysql学习在linux安装mysql重启提示You must SET PASSWORD before executing this statement的解决方法，希望对您有用。如果有疑问，可以联系我们。

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,想查询所有存在的数据库测试下.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> show databases;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement
mysql> SET PASSWORD = PASSWORD('123456');
Query OK, 0 rows affected (0.00 sec)

mysql> show databases;
5 rows in set (0.00 sec)


也就是用mysql> SET PASSWORD = PASSWORD('123456');这句话重新设置一次密码!哎,搞得真费劲啊.


有的童鞋也会遇到如下问题：

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!就搞定了.

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