Linux系统下授权MySQL账户访问指定数据库
教程目的: Linux 下 Mysql客户端创建、删除数据库,导入、导出数据库
使用工具:Putty、SecureCRT等远程工具
适用系统:Linux 系列系统
操作过程:
1.Mysql 客户端创建、删除数据库:
1)登录Mysql数据库:
[root@DaoBiDao~]# /usr/local/mysql/bin/mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 6 Server version: 5.1.60-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>
要根据主机内部安装mysql的情况操作,以上命令:/usr/local/mysql/bin/mysql -u root -p 回车,输入正确密码即可登录mysql数据库服务(mysql安装在/usr/local/mysql/目录下)
2)创建空数据库
mysql> create database daobidao; ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... Connection id: 7 Current database: *** NONE *** Query OK, 1 row affected (0.00 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | daobidao | | mysql | +--------------------+ 3 rows in set (0.00 sec)
以上命令:create database 库名; 就可以创建一个空的数据库,例如命令:create database daobidao; 创建一个daobidao的空数据库;命令:show databases; 显示所有的数据库。
3)删除数据库
mysql> drop database daobidao; ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... Connection id: 9 Current database: *** NONE *** Query OK, 0 rows affected (0.01 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | +--------------------+ 2 rows in set (0.00 sec)
以上命令:drop database 库名; 就可以删除一个数据库;例如命令:drop database daobidao; 就删除了daobidao 数据库。
2.Mysql客户端导入、导出数据库
1)导入数据库 [方法一]
[root@DaoBiDao~]# /usr/local/mysql/bin/mysql -u root -p daobidao < /root/test.sql
Enter password:
以 上命令:/usr/local/mysql/bin/mysql -u root -p 需要导入到哪个数据库的数据库名 < 需要导入的数据库文件;例如命令:/usr/local/mysql/bin/mysql -u root -p daobidao < /root/test.sql 将数据库文件test.sql文件导入到daobidao数据库中; (但需要导入到哪个数据库必须要存在)
2)导入数据库 [方法二]
mysql> create database daobidao; Query OK, 1 row affected (0.00 sec) mysql> use daobidao; Database changed mysql> source /root/test.sql; ERROR 2006 (HY000): MySQL server has gone away No connection. Trying to reconnect... Connection id: 17 Current database: daobidao Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.00 sec) ····························
以上命令:1)创建一个数据库,2)使用该数据库,3)导入数据库 文件;例如命令:1)create database daobidao; 创建一个空数据库; 2)use daobidao; 使用该数据库; 3) source /root/test.sql; 导入数据库文件。(但需要导入到哪个数据库必须要存在)
3)导出数据库的数据和表结构
[root@DaoBiDao~]#/usr/local/mysql/bin/mysqldump -u root -p daobidao > /root/dbd.sql
Enter password:
以上命令:/usr/local/mysql/bin /mysqldump -u root -p 需要导出的数据库 > 导出存放的数据库文件名; 例如命令:/usr/local/mysql/bin/mysqldump -u root -p daobidao > /root/dbd.sql 将daobidao 数据库导出,存放在/root/dbd.sql文件。
4)导出数据库的表结构
[root@DaoBiDao~]#/usr/local/mysql/bin/mysqldump -u root -p -d daobidao > /root/dbd.sql
Enter password:
以上命令:/usr/local/mysql/bin /mysqldump -u root -p -d 需要导出的数据库 > 导出存放的数据库文件名; 例如命令:/usr/local/mysql/bin/mysqldump -u root -p -d daobidao > /root/dbd.sql 将daobidao 数据库导出表结构,存放在/root/dbd.sql文件。