mysql在命令行中，指定要连接的数据库？

最新推荐文章于 2025-07-15 16:48:04 发布

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原文链接：http://www.cnblogs.com/chuanzhang053/p/8608304.html

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#数据库

本文介绍如何使用MySQL客户端的-D参数来直接连接指定的数据库。通过示例验证了使用-D参数可以方便地在登录时直接进入目标数据库。

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需求描述：

　　mysql客户端，可以在登录到mysql数据库时，指定要连接到哪个数据库

　　这里进行一个测试。

测试过程：

1.mysql通过-D参数指定连接到test数据库

[mysql@redhat6 scripts]$ mysql -uroot -p -D test
Enter password: 
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
[mysql@redhat6 scripts]$ mysql -uroot -p -D test
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 14
Server version: 5.5.57-log MySQL Community Server (GPL)

Copyright (c) 2000, 2013, 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> select database();
+------------+
| database() |
+------------+
| test       |
+------------+
1 row in set (0.00 sec)

备注：通过在-D参数后面指定数据库名字，就连接到了test数据库。

2.通过-D参数，连接到test01数据库

[mysql@redhat6 scripts]$ mysql -uroot -p -D test01
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 15
Server version: 5.5.57-log MySQL Community Server (GPL)

Copyright (c) 2000, 2013, 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> select database();
+------------+
| database() |
+------------+
| test01     |
+------------+
1 row in set (0.00 sec)

mysql>