mysql 碰到了Ignoring query to other database问题：
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root@support ~]# mysql -root -p --socket=/tmp/mysql.sock
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.6.22-log Source distribution
Copyright (c) 2000, 2011, 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> show databases;
Ignoring query to other database
mysql> show slave status\G
Ignoring query to other database
-> Ctrl-C -- exit!
AbortedIgnoring query to other database
百思不得其解，后面发现了错误原因。竟然是用户名漏了 -u，真是小糊涂。
错误：mysql -root -p --socket=/tmp/mysql.sock
正确：mysql -uroot -p --socket=/tmp/mysql.sock
[root@support ~]# mysql -uroot -p --socket=/tmp/mysql.sock
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.6.22-log Source distribution
Copyright (c) 2000, 2011, 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> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| _client |
| mfi_appstore |
| mfi_boss_admin |
| mysql |
| performance_schema |
| test |
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