[GitHub] [shardingsphere] azexcy commented on pull request #22252: Remove pipeline incremental task connecting MySQL use default database

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azexcy commented on PR #22252:
URL: https://github.com/apache/shardingsphere/pull/22252#issuecomment-1319598754

   when use new user `test` to migration, use mysql client can login success.
   
   ```
   ➜  ~ mysql -u test -P3306 -h 127.0.0.1 -p
   Enter password:
   Welcome to the MySQL monitor.  Commands end with ; or \g.
   Your MySQL connection id is 724
   Server version: 8.0.27 MySQL Community Server - GPL
   
   Copyright (c) 2000, 2022, Oracle and/or its affiliates.
   
   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> show grants for test;
   +------------------------------------------------------------------+
   | Grants for test@%                                                |
   +------------------------------------------------------------------+
   | GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO `test`@`%` |
   | GRANT ALL PRIVILEGES ON `ds_0`.* TO `test`@`%`                   |
   | GRANT ALL PRIVILEGES ON `ds_1`.* TO `test`@`%`                   |
   +------------------------------------------------------------------+
   3 rows in set (0.01 sec)
   
   mysql> SHOW MASTER STATUS;
   +---------------+-----------+--------------+------------------+-------------------+
   | File          | Position  | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
   +---------------+-----------+--------------+------------------+-------------------+
   | binlog.000006 | 381622047 |              |                  |                   |
   +---------------+-----------+--------------+------------------+-------------------+
   1 row in set (0.00 sec)
   ```
   
   but when using migration, the exception thrown, error message follow
   ```
   Access denied for user 'test'@'%' to database 'mysql'
   ```
   
   so need fix it.


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