How to solve the problem of Chinese display garbled characters in mysql

MySQL is an open source relational database management system used to store data and manage data operations. It is widely used, especially in web applications. However, sometimes you encounter the problem of MySQL Chinese displaying garbled characters.

The reason for the garbled characters is mainly because the character set used by the MySQL database by default is Latin1, which is a character set containing 256 characters and does not contain Chinese characters. Therefore, if your application needs to store Chinese data in MySQL, you need to change MySQL's character set to "utf8" to ensure that Chinese characters are stored and displayed correctly.

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

Method 1: Change the character set of the MySQL server

Changing the character set on the MySQL server is the best way to solve the problem of garbled characters. good idea. First, you need to check the current character set settings of your MySQL server. You can use the following command:

SHOW VARIABLES LIKE 'character%';

If you find that MySQL is not using the UTF-8 character set, then you need to change it. You can do this by editing the MySQL configuration file my.cnf or my.ini file. Here are some example configurations:

[client]
default-character-set=utf8

[mysql]
default-character-set=utf8

[mysqld]
character-set-server=utf8

collation-server=utf8_general_ci

init-connect='SET NAMES utf8'

Among them, character-set The -server and collation-server configuration items are used to set the character set and collation rules of the MySQL server. The init-connect configuration item is used to set the character set on each new connection.

Then you need to restart the MySQL service for the changes to take effect.

Method 2: Change the character set of the MySQL database and table

If you cannot change the character set of the MySQL server, or only need to change the character set of a specific database or table, you can use the following Command:

ALTER DATABASE database_name CHARACTER SET utf8 COLLATE utf8_general_ci;

ALTER TABLE table_name CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;

These commands will change the characters of the specified database and table set. Note that these commands only change the character set in which the data is stored in the database, not the connected client character set. Therefore, before executing the command, you need to ensure that the client is using the same character set as the database and table.

Method 3: Use the SET NAMES command to set the client character set

If you cannot change the character set of the MySQL server, or you only need to change the character set of a specific query, you can use the SET NAMES command . This command is used to set the client character set for the connection. For example:

SET NAMES utf8;

This will set the connected client character set to UTF-8.

It should be noted that the SET NAMES command must be used before executing any query, otherwise the query will not use the correct character set, resulting in garbled Chinese characters.

When using MySQL, garbled Chinese characters are a very common problem. You can use the above method to solve this problem and ensure that your MySQL server stores and displays Chinese characters correctly. If you encounter other problems, please consult the MySQL documentation or ask for help.

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