本意向修改一个用户的密码，网上搜到的命令为如下
1
mysql> update user set password=password(“新密码”) where user=”用户名”;
执行后报错 ERROR 1054(42S22) Unknown column 'password' in ‘field list’
错误的原因是 5.7版本下的mysql数据库下已经没有password这个字段了，password字段改成了authentication_string
所以请使用一下命令：
>mysql -u root -p Enter password: ******** Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 12 Server version: 5.7.18-log MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> use mysql; Database changed mysql> select User from user; #此处为查询用户命令 +-----------+ | User | +-----------+ | ******* | | mysql.sys | | root | +-----------+ 3 rows in set (0.00 sec) mysql> update user set password=password("*******") where user="*******"; #修改密码报错 ERROR 1054 (42S22): Unknown column 'password' in 'field list' mysql> update mysql.user set authentication_string=password('*******') where user='*******'; #修改密码成功 Query OK, 1 row affected, 1 warning (0.00 sec) Rows matched: 1 Changed: 1 Warnings: 1 mysql> flush privileges; #立即生效 Query OK, 0 rows affected (0.00 sec) mysql> quit Bye n>mysql -u ******* -p #以该用户登录成功. Enter password: ******** ………………………… mysql>