Example of a MySQL database built on the command line

To create a database of different character sets and delete a database under the command line:

[Root@lamp ~]#/usr/local/mysql/bin/mysql-uroot-p ' admin123 '
Warning:using a password on the command line interface can is 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), 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, the Byrd_default default encoding is UTF8, because the default encoding that I set when I compile MySQL is 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, encoding is a GBK database.
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 |
+--------------------+
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)

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, prompt warning if not present
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>