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命令行建立Mysql数据库的实例

2024-07-24 12:35:26
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  建立数据库我们可以很多的方式来创建了,小编来为各位介绍使用命令行建立Mysql数据库的例子,希望例子对各位有帮助,命令行下建立不同字符集的数据库、删除数据库:
 
  [root@lamp ~]# /usr/local/mysql/bin/mysql -uroot -p'admin123'
  Warning: Using a password on the command line interface can be insecure.
  Welcome to the MySQL monitor.  Commands end with ; or \g.
  Your MySQL connection id is 2
  Server version: 5.6.16 Source distribution
  Copyright (c) 2000, 2014, Oracle and/or its affiliates. All rights reserved.
  mysql> create database byrd_default;    #建议一个叫做byrd_default的数据库
  Query OK, 1 row affected (0.08 sec)
  mysql> show databases like 'byrd%';    #查看以byrd开头的数据库,
  +------------------+
  | Database (byrd%) |
  +------------------+
  | byrd_default     |
  +------------------+
  1 row in set (0.00 sec)
  mysql> show create database byrd_default;    #查看系统建立byrd_default命令,byrd_default默认编码是utf8,因为我编译mysql的时候设置的默认编码为utf8
  +--------------+-----------------------------------------------------------------------+
  | Database     | Create Database                                                       |
  +--------------+-----------------------------------------------------------------------+
  | byrd_default | CREATE DATABASE `byrd_default` /*!40100 DEFAULT CHARACTER SET utf8 */ |
  +--------------+-----------------------------------------------------------------------+
  1 row in set (0.00 sec)
  mysql> create database gbk default character set gbk collate gbk_chinese_ci;    #建立一个名字叫做gbk,编码方式是gbk的数据库
  Query OK, 1 row affected (0.00 sec)
  mysql> show create database gbk;
  +----------+-------------------------------------------------------------+
  | Database | Create Database                                             |
  +----------+-------------------------------------------------------------+
  | gbk      | CREATE DATABASE `gbk` /*!40100 DEFAULT CHARACTER SET gbk */ |
  +----------+-------------------------------------------------------------+
  1 row in set (0.00 sec)
  mysql> show databases;    #所有数据库表
  +--------------------+
  | Database           |
  +--------------------+
  | information_schema |
  | byrd_default       |
  | gbk                |
  | gbk1               |
  | gbk2               |
  | gbk3               |
  | gbk4               |
  | mysql              |
  | performance_schema |
  | test               |
  | ultrax             |
  +--------------------+
  11 rows in set (0.00 sec)
  mysql> drop database gbk1;    #删除名字为gbk1的数据库
  Query OK, 0 rows affected (0.19 sec)  --phpfensi.com
  mysql> drop database gbk2;
  Query OK, 0 rows affected (0.00 sec)
  mysql> drop database gbk3;
  Query OK, 0 rows affected (0.00 sec)
  mysql> drop database gbk4;
  Query OK, 0 rows affected (0.01 sec)
  mysql> show databases;
  +--------------------+
  | Database           |
  +--------------------+
  | information_schema |
  | byrd_default       |
  | gbk                |
  | mysql              |
  | performance_schema |
  | test               |
  | ultrax             |
  +--------------------+
  7 rows in set (0.00 sec)
  mysql> drop database if exists byrd_default;    #如果byrd_default的数据库存在则删除,如果不存在则提示警告
  Query OK, 0 rows affected (0.00 sec)
  mysql> show databases;
  +--------------------+
  | Database           |
  +--------------------+
  | information_schema |
  | gbk                |
  | mysql              |
  | performance_schema |
  | test               |
  | ultrax             |
  +--------------------+
  6 rows in set (0.00 sec)
  mysql>。
 

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