ERROR 1044 (42000): Access denied for user ”@’localhost’ to database ‘demo’

不管輸入什麼都是提示許可權不夠

mysql> create database sufadi;
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'sufadi'

原因

預設情況是匿名使用者登陸，所以我們需要設定一個密碼，然後每次需要登陸以下並進入

D:\python3-webapp-Su\www>mysql -u root -p
Enter password: ******
Welcome to
 
 the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 48
Server version: 5.6.24 MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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.

設定密碼

管理員身份執行

進入安裝目錄的bin檔案，右鍵選擇管理員身份執行mysql.exe

設定密碼

UPDATE user SET Password=PASSWORD(‘123456’) WHERE user=’root’;

mysql> UPDATE user SET Password=PASSWORD('123456') WHERE user=
 
'root';
Query OK, 3 rows affected (0.03 sec)
Rows matched: 3  Changed: 3  Warnings: 0

重新整理一下

flush privileges;

mysql> flush privileges
    -> ;
Query OK, 0 rows affected (0.01 sec)

cmd視窗重新登陸一下

mysql -u root -p

輸入密碼

C:\Users\admin>mysql -u root -p
Enter password:

登陸成功

C:\Users\admin>mysql -u root -p
Enter password: ******
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 49
Server version: 5.6.24 MySQL Community Server (GPL)

Copyright (c) 2000, 2015, 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>

建立一個數據庫

mysql> create database pythondb;
Query OK, 1 row affected (0.01 sec)

show databases

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| demo               |
| mysql              |
| performance_schema |
| pythondb           |
| sufadi             |
| test               |
+--------------------+
7 rows in set (0.00 sec)