Why is MySQL installed with Chinese garbled characters?

The reasons why MySQL is installed with Chinese garbled characters are: 1. Incorrect character set setting; 2. Client connection setting problem; 3. Operating system environment setting problem; 4. Data import problem. By correctly setting the character set, connection parameters and operating system environment, and properly processing data files, users can solve the Chinese garbled problem of MySQL installation.

The operating environment of this tutorial: windows10 system, mysql8.0.16 version, DELL G3 computer.

MySQL is a widely used relational database management system that can be used to manage and store large amounts of data and has powerful functions and flexibility. However, some users may encounter problems with Chinese garbled characters when installing MySQL. This article will explore some common reasons and provide solutions to help users solve the problem of Chinese garbled characters in MySQL installation.

1. Incorrect character set setting

Character set refers to the character encoding method used to store and process text data in the database. MySQL supports multiple character sets, such as utf8, latin1, etc. If the character set is not set correctly during the installation process, garbled characters may occur when storing and querying Chinese data. Usually, the default character set of mysql is latin1, which may cause Chinese characters to not be displayed correctly.

Solution:

1. Set the character set to utf8 or utf8mb4 in the MySQL configuration file. Add the following configuration items to the my.cnf file:

[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
character-set-server=utf8
collation-server=utf8_general_ci

2. Execute the following statement in the MySQL command line to modify the default character set:

ALTERDATABASEdatabase_nameCHARACTERSETutf8COLLATEutf8_general_ci;
ALTERTABLEtable_nameCONVERTTOCHARACTERSETutf8COLLATE
utf8_general_ci;

2. Client connection Setting issues

Garbled characters may also be related to client connection settings. MySQL clients can specify the character set when connecting to the server. If the client does not set the character set correctly, character set inconsistencies may occur when communicating with the server.

Solution:

1. When connecting to the mysql database, set the character set to utf8. For example, execute the following command on the command line:

mysql-uusername-p--default-character-set=utf8

2. Before connecting to the MySQL database, set the character set to utf8 in the code. For example, when using PHP to connect to MySQL, you can use the following code:

mysqli_set_charset($con,"utf8");

3. Operating system environment setting issues

The locale and character encoding settings of the operating system are also It may have an impact on MySQL Chinese garbled characters. If the character encoding of the operating system is inconsistent with the character encoding of the MySQL database, data may be garbled during transmission.

Solution:

1. Set the correct locale and character encoding in the operating system. For example, in Windows systems, corresponding modifications can be made in the "Region and Language" settings of the "Control Panel".

2. Specify the character encoding format in the MySQL connection string. For example, in PHP, you can use the following code:

$con=mysqli_connect("localhost","username","password","database_name");
mysqli_query($con,"SETNAMES'utf8'");

4. Data import problem

If you encounter Chinese garbled problems when importing data, it may be because the data The encoding format of the file is inconsistent with the MySQL database.

Solution:

1. Use appropriate tools to convert the encoding format of the data file to a character set consistent with MySQL. For example, you can use Notepad's "Convert to UTF-8 without BOM" option to convert the file encoding.

2. When importing data, specify the correct character set. For example, when using the MySQL command line to import data, you can use the following command:

mysql-uusername-pdatabase_name<data_file.sql
--default-character-set=utf8

Conclusion:

The Chinese garbled problem of MySQL installation may be caused by character set settings, client connection settings, operating system This is caused by multiple factors such as environment settings and data import. By correctly setting the character set, connection parameters and operating system environment, and properly processing data files, users can solve the Chinese garbled problem of MySQL installation and ensure that Chinese data can be stored and displayed correctly. .

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