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The Chinese garbled problem occurs when adding data to the table after creating a table using MySQL on the command line. The MySQL version I installed is MySQL 5.7. This problem will not occur after MySQL 8.0, so this is based on the MySQL 5.7 version. Speaking
mysql> insert into student values(1002,'张三');
ERROR 1366 (HY000): Incorrect string value: '\xD5\xC5\xC8\xFD' for column 'name' at row 1
1. Why does this ERROR occur?
This is due to the fact that the default character set in MySQL is Latin1. When we use Chinese to add it to the table, Chinese garbled characters will appear, resulting in an error and ERROR
2. Solution steps
1: View encoding commands
Use the following command on the command line
show variables like 'character_%';
show variables like 'collation_%';
2. Modify the my.ini configuration file in the MySQL data directory
To modify the configuration file, use an advanced text editor. I am using Sublime Text 3 here. After opening and modifying with software such as Notepad, the file encoding may be changed to "including BOM header", and the service restart will fail.
default-character-set=utf8 #默认字符集
[mysqld] # 大概在76行左右，在其下添加
...
character-set-server=utf8
collation-server=utf8_general_ci
3. Restart the MySQL service
Here you can manually close or use the command line to restart the MySQL service, the following figure is to use the command line to restart the MySQL service
4. Review the encoding command again
Continue to use the following commands on the command line
show variables like 'character_%';
show variables like 'collation_%';
5. Add Chinese data to the table again
Notice
Please note here that the character set of the previously created table is Latin1, so ERROR will be reported when adding Chinese. The solution here is to directly delete the database and recreate the library. The default is utf8.
recreate the database
Add Chinese data to the table after recreating the table
Summarize
The above is to solve the problem of MySQL adding data to the table and inserting Chinese garbled characters. It is only for MySQL 5.7 version. The default character set of MySQL 8.0 version is utf8, and Chinese data can be directly inserted into the table. The principle is still the default way to modify the character set, the utf8 character set.
If you forget to modify the default encoding, there will be garbled characters. Starting from MySQL 8.0, the default encoding of the database is changed to utf8mb4, thus avoiding the above-mentioned garbled problem.