MySQL中怎么在提示符中显示当前用户

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prompt命令可以在mysql提示符中显示当前用户、数据库、时间等信息.
例如:
[root@localhost ~]# mysql -uroot -p --prompt="\\u@\\h:\\d \\r:\\m:\\s>"
Enter passWord:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 13
Server version: 5.7.18-log MySQL CommUnity Server (GPL)


Copyright (c) 2000, 2017, 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@localhost:(none) 11:11:19>use test
Reading table infORMation for completion of table and column names
You can turn off this feature to get a quicker startup with -A


Database changed
root@localhost:test 11:11:22>
root@localhost:test 11:11:24>
root@localhost:test 11:11:24>
root@localhost:test 11:11:25>


也可以把参数加到my.cnf里面,需要重启数据库生效:

[mysql]
prompt=mysql(\\u@\\h:\\d \\r:\\m:\\s)>

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