MySQL 重置密碼

系統版本：
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Your MySQL connection id is 2
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忘記密碼，編輯my.cnf服務配置文件
 [mysqld]段段中加入 skip-grant-tables語句，去掉認證
update user set password=password("root")where user='root';
修改密碼以後，沒法馬上操做mysql，退出以後，從新鏈接mysql
執行語句報錯：
You must reset your password using ALTER USER statement before executing this statement
解決方案
set password = password("root");
該問題是因爲密碼受權過時致使