Mysql的常見幾種錯誤:
一.在進入
mysql
數據庫時出錯
# 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)'
出現此錯誤時:
1.
關閉
# service mysqld stop
2.
屏蔽權限
# mysqld_safe
--skip-grant-table
屏幕出現:
Starting demo from 或者 光標....
3.
新開起一個終端輸入
# mysql -u root mysql
mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root'; //注意大小寫
mysql>
FLUSH PRIVILEGES;
記得這句命令不能忘,否則如果關閉先前的終端,又會出現原來的錯誤
mysql> \q
退出后
# mysql -u root -p
使用新密碼登錄
二.在創建數據庫時報錯
mysql> create database haha;
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'haha'
mysql>
解決方案:
這是因為在mysql的usr表中,存在用戶名為空的賬戶,雖然登陸時用的是root ,但 是匿名登陸
刪除 user.user中值為NULL 的 ,或更新NULL為test
1)delete from user where user is NULL
2)update user set user='test' where user is NUL