在默认下，MySQL在use databasename的时候，是不显示连接的库名！
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| hank |
| mysql |
| performance_schema |
| sakila |
| test |
| yoon |
+--------------------+
7 rows in set (0.00 sec)
mysql> use yoon;
Database changed
mysql>
可通过以下方式，实现显示连接的数据库名：
[root@hank-yoon tmp]# mysql --prompt="\u(\d) >"
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 29
Server version: 5.6.26-log Source distribution
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.
root((none)) >use yoon;
Database changed
root(yoon) >
如果想显示连接的库名和时间：
[root@hank-yoon tmp]# mysql --prompt="\u(\d) \R:\m:\s >"
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 30
Server version: 5.6.26-log Source distribution
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.
root((none)) 15:20:08 >use yoon
Database changed
root(yoon) 15:20:16 >
也可以添加在my.cnf配置文件中，但是需要重启DB，生产库的话，可不是随便能重启，因此在连接的时候加上即可！
[mysql]
default-character-set = utf8
prompt = \\u(\\d) \\R:\\m:\\s > \
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| hank |
| mysql |
| performance_schema |
| sakila |
| test |
| yoon |
+--------------------+
7 rows in set (0.00 sec)
mysql> use yoon;
Database changed
mysql>
可通过以下方式，实现显示连接的数据库名：
[root@hank-yoon tmp]# mysql --prompt="\u(\d) >"
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 29
Server version: 5.6.26-log Source distribution
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.
root((none)) >use yoon;
Database changed
root(yoon) >
如果想显示连接的库名和时间：
[root@hank-yoon tmp]# mysql --prompt="\u(\d) \R:\m:\s >"
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 30
Server version: 5.6.26-log Source distribution
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.
root((none)) 15:20:08 >use yoon
Database changed
root(yoon) 15:20:16 >
也可以添加在my.cnf配置文件中，但是需要重启DB，生产库的话，可不是随便能重启，因此在连接的时候加上即可！
[mysql]
default-character-set = utf8
prompt = \\u(\\d) \\R:\\m:\\s > \
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/28939273/viewspace-1972614/ ，如需转载，请注明出处，否则将追究法律责任。
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