資料，資料，命根就在資料 ! 操作資料庫時，一定要謹慎小心。師萬物 這裡的程式碼看看就好，要有自己的判斷。遇到抉擇，要不恥上下問。

example - 錯誤的

stu@Ubuntu:~$ mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 8.0.12 MySQL Community Server - GPL

Copyright (c) 2000, 2018, 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> create database database;
ERROR 1064
 
 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'database' at line 1
mysql> create database @#$%%^&*;
    -> ;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to
 
 your MySQL server version for the right syntax to use near '@' at line 1
mysql> exit
Bye
stu@Ubuntu:~$ 

example - 正確的

stu@Ubuntu:~$ mysql -u root -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 8.0.12 MySQL Community Server - GPL

Copyright (c) 2000, 2018, 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> create database `database`;
Query OK, 1 row affected (0.09 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| database           |
| employees          |
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
6 rows in set (0.01 sec)

mysql> create database `@#$%^%`;
Query OK, 1 row affected (0.03 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| @#$%^%             |
| database           |
| employees          |
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
7 rows in set (0.00 sec)

mysql> exit
Bye
stu@Ubuntu:~$ 

more knowledge

• 命名一定要規範，見名知意。
• 一個故事：在工作中，將要見到前輩的資料庫查詢程式碼時，師萬物 很激動的，滿心歡喜。當見到了由拼音組成的表名時，瞬間冷卻了。
• 使用反引號創建出來的特殊名字資料庫，知道有這會事就好。在實際開發中，好好寫命名與註釋，利人利己。

resource

MySQL是一個關係型資料庫管理系統，目前是開源的(2018-10)。 許可權明確，恰當選擇引擎與字符集，命名簡潔明瞭與規範。 MariaDB，Redis，MongoDB，PostgreSQL，Hive，HBase等，可以簡單地瞭解。 Workbench，phpMyAdmin，Navicat等圖形化管理工具，可以試用一下。