###開發規範

開發規範：關鍵字大寫，庫名字小寫，要有字符集
CREATE DATABSE　oldboy CHARSET utf8; ###建議采用第一種
CREATE DATABSE　oldboy CHARSET utf8mb4;

###lower_case_table_names begin###

mysql> show variables like ‘%lower%‘;
+------------------------+-------+
| Variable_name | Value |
+------------------------+-------+
| lower_case_file_system | OFF |
| lower_case_table_names | 0 |
+------------------------+-------+
2 rows in set (0.00 sec)
#lower_case_table_names
如果此參數寫作1

測試：修改/etc/my.cnf文件--->>>>>>>>lower_case_table_names 將該參數置為1

後續操作見代碼塊

 1 #重啟數據庫
 2 [root@db01-sa ~]# /etc/init.d/mysqld restart
 3 Shutting down MySQL..... SUCCESS! 
 4 Starting MySQL.... SUCCESS! 
 5 #登錄數據庫
 6 [root@db01-sa ~]# mysql -uroot -p123
 
 7 Warning: Using a password on the command line interface can be insecure.
 8 Welcome to the MySQL monitor.  Commands end with ; or \g.
 9 Your MySQL connection id is 1
10 Server version: 5.6.38-log Source distribution
11 
12 Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
13
 
 
14 Oracle is a registered trademark of Oracle Corporation and/or its
15 affiliates. Other names may be trademarks of their respective
16 owners.
17 
18 Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.
19 
20 mysql> show databases;
21 +--------------------+
22 | Database           |
23 +--------------------+
24 | information_schema |
25 | mysql              |
26 | performance_schema |
27 | test               |
28 +--------------------+
29 4 rows in set (0.05 sec)
30 
31 mysql> CREATE DATABASE OLDBOY CHARSET utf8;
32 Query OK, 1 row affected (0.39 sec)
33 
34 mysql> show databases;
35 +--------------------+
36 | Database           |
37 +--------------------+
38 | information_schema |
39 | mysql              |
40 | oldboy             |
41 | performance_schema |
42 | test               |
43 +--------------------+
44 5 rows in set (0.00 sec)

###lower_case_table_names end###

MySQL 特殊參數