修改mysql密碼,mysql密碼

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修改mysql密碼,mysql密碼

1、如果沒有密碼,則

  mysql -u root

  mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('newpass');

2、如果已經有密碼,可以用:

  mysqladmin -u root password "newpass"

  如果root已經設定過密碼,採用如下方法

  mysqladmin -u root password oldpass "newpass"

3、可以在可視化介面中,找到mysql資料庫的user表,修改,但是記得加許可權:

grant all on mysql.* to 'root'@'localhost' identified by 'password'; 

最後那個password即是你要修改的root使用者的密碼 

如果不加這句的話,會沒有許可權而登不上,回報這樣的錯誤:

錯誤碼  1045 

Access denied for user 'root'@'localhost' (using password:YES) 

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