Mysql database ignores case

The first thing we need to understand is ：
Linux By default MySQL Databases are case sensitive ,
Windows By default MySQL The database is case insensitive .

1. View database case configuration

show variables like '%lower%';

±-----------------------±------+
| Variable_name | Value |
±-----------------------±------+
| lower_case_file_system | ON |
| lower_case_table_names | 0 |
±-----------------------±------+

2. Use root Permission to login , Modify the configuration file /etc/my.cnf
It should be noted that the location of the configuration file is not necessarily this , We are using docker When setting up the environment MySQL The default configuration file path for is ：/etc/mysql/mysql.conf.d/mysqld.cnf, So we need to specify the path of the configuration file when modifying

3. In the configuration file [mysqld] Under the node , Join a row ：

lower_case_table_names=1

4. restart MySQL :

systemctl restart mysqld.service

5. View database case configuration

show variables like '%lower%';

±-----------------------±------+
| Variable_name | Value |
±-----------------------±------+
| lower_case_file_system | OFF |
| lower_case_table_names | 1 |
±-----------------------±------+
Seeing the above information means that we have achieved success

One thing to note is that ： When we set to ignore case , It is better not to have the name of the database case sensitive in the database , You can also try the specific reasons by yourself

（ The table or database cannot be deleted or modified , Change the above configuration back to , This is also to avoid using case in the database or table when modifying the configuration ）

Expand ：

Deployed in docker In the environment MySQL How database ignores case

1、 We need to go into the already created docker In the container

docker exec -it mysql bash

2、 Use normal MySQL Order to enter MySQL

mysql -u root -p

3、 Repeat the above steps to modify the configuration file

vim /etc/mysql/mysql.conf.d/mysqld.cnf

4、 sign out , And restart MySQL service

docker restart mysql

I hope the above can help you , thank you ~