MySQL rootユーザーへのすべての権限の付与

MySQL rootユーザーへのすべての権限の付与
ステップ

Microsoft Windows [   10.0.18363.720]
(c) 2019 Microsoft Corporation。      。

C:\Windows\system32>mysql -u root -p
Enter password: ******
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1015
Server version: 8.0.19 MySQL Community Server - GPL

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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> select user,host,authentication_string from mysql.user;
+------------------+-----------+------------------------------------------------------------------------+
| user             | host      | authentication_string                                                  |
+------------------+-----------+------------------------------------------------------------------------+
| yuexiaohui       | %         | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9                              |
| mysql.infoschema | localhost | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED |
| mysql.session    | localhost | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED |
| mysql.sys        | localhost | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED |
| root             | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9                              |
+------------------+-----------+------------------------------------------------------------------------+
5 rows in set (0.00 sec)

mysql> use mysql;
Database changed
mysql> update user set host='%' where user='root';
Query OK, 1 row affected (0.06 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';
Query OK, 0 rows affected (0.06 sec)

mysql> select user,host,authentication_string from mysql.user;
+------------------+-----------+------------------------------------------------------------------------+
| user             | host      | authentication_string                                                  |
+------------------+-----------+------------------------------------------------------------------------+
| root             | %         | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9                              |
| yuexiaohui       | %         | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9                              |
| mysql.infoschema | localhost | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED |
| mysql.session    | localhost | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED |
| mysql.sys        | localhost | $A$005$THISISACOMBINATIONOFINVALIDSALTANDPASSWORDTHATMUSTNEVERBRBEUSED |
+------------------+-----------+------------------------------------------------------------------------+
5 rows in set (0.00 sec)

使用したコマンドのまとめ

mysql -u root -p
select user,host,authentication_string from mysql.user;
use mysql;
update user set host='%' where user='root';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';