How to solve the Chinese garbled characters in mysql

MySQL is a popular relational database management system that can manage large amounts of data. But sometimes when processing Chinese characters, you may encounter garbled characters. These garbled characters will affect the correct storage and display of data, and even affect the normal operation of the application. In this article, we will explore the problem of Chinese garbled characters in MySQL and provide solutions.

Chinese garbled problem in MySQL

MySQL supports multiple character sets and collation rules. Character set is the character set encoding used in the database, and collation rules are used to specify how text is sorted. The character sets supported by MySQL include ASCII, UTF-8, GBK, etc. UTF-8 is an implementation of Unicode and supports character set encoding in multiple languages.

Chinese garbled characters usually occur in the following situations:

1. The database character set and the application character set do not match. If the character set used by the application is inconsistent with the character set stored in the database, garbled characters may occur.
2. The data character set stored in the database is inconsistent with the table character set. If data with different character encoding formats is inserted into the table, it may cause Chinese garbled characters.
3. The character set is not set correctly in the application. If the application does not set the character set correctly, it will cause Chinese garbled characters.

Solution

The following are some common methods to solve the problem of Chinese garbled characters in MySQL:

1. Modify the default character set of MySQL

You can use the following command to modify the default character set of MySQL:

SET CHARACTER SET utf8;

Set the default character set of MySQL to UTF-8. Of course, it can also be set to other character sets that support Chinese.

2. Modify the character set of the MySQL table

You can use the following command to modify the character set of the MySQL table:

ALTER TABLE table_name CONVERT TO CHARACTER SET utf8;

Convert the character set of the table to UTF-8, of course, can also be set to other character sets that support Chinese.

3. Modify the character set used by the application to connect to MySQL

When connecting to the MySQL database in the application, you can avoid garbled characters by setting the character set. For example, in PHP you can use the following code to set the character set:

mysqli_set_charset($link, 'utf8');

Set the character set to UTF-8 or other character sets that support Chinese.

4. Modify the character set of the MySQL client

You can use the following command to set the character set in the MySQL client:

SET NAMES utf8;

This command will change the character set Set to UTF-8 or other character set that supports Chinese.

Summary

The Chinese garbled problem in MySQL is usually caused by character set mismatch or inconsistent character encoding. In order to solve these problems, you can try to modify the default character set of MySQL, the character set of the table, the character set of the application connecting to MySQL, or the character set of the MySQL client. In this way, the problem of Chinese garbled characters can be avoided and the correct storage and display of data can be ensured.

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