mysql solves Chinese garbled characters

When using the MySQL database, we often encounter the problem of garbled Chinese characters. This not only brings a lot of trouble to development and operation and maintenance personnel, but also has a considerable impact on the normal operation of the business. This article will provide detailed analysis and solutions to the MySQL Chinese garbled problem, helping readers quickly solve common MySQL Chinese garbled problems.

1. What are Chinese garbled characters?

In the computer field, Chinese garbled characters refer to the situation where Chinese characters cannot be displayed or decoded normally due to inconsistent character encoding methods, incorrect settings, etc. when displaying, storing, and transmitting Chinese characters on a computer. For example, in MySQL, if the character set we set is inconsistent with the stored character set, it may cause Chinese garbled characters.

2. Reasons for Chinese garbled characters in MySQL

1. Inconsistent character sets:

When creating a new table in MYSQL, if you do not specify a character set, or The specified character set is inconsistent with the character set of the MySQL server, which may cause garbled characters when storing data.

2. Incorrect data type setting:

If the set data type is inconsistent with the actual stored data type when storing data, it may cause garbled characters, such as when storing Chinese data The VARCHAR type is set to the CHAR type.

3. The connection character set is inconsistent:

When the application connects to the MySQL server, if the character set used for the connection is inconsistent with the character set of the MySQL server, it may cause the problem of garbled Chinese characters.

3. Methods to solve the problem of Chinese garbled characters in MySQL

1. Set the character set:

Using the correct character set is the first way to solve the problem of Chinese garbled characters in MySQL. Specifying the correct character set when creating a table can greatly reduce the incidence of Chinese garbled characters. We can use the following command to query the character set of the current MySQL server:

SHOW VARIABLES LIKE '%char%';

If you find that the character set is wrong, you can use the SET command to set the correct characters Set, for example:

SET character_set_client = utf8;
SET character_set_connection = utf8;
SET character_set_results = utf8;

2. Modify the MySQL configuration file:

We can directly modify the MySQL configuration file my.ini (Windows) or my.cnf (Linux) to configure the character set of the MySQL server. Add the following content to the file:

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

Save the file and restart the MySQL service.

3. Use transcoding tools:

If a large amount of data already exists, directly modifying the character set may not solve the problem. We can use some transcoding tools, such as iconv, uconv, etc., to transcode the data. When transcoding, be sure to set the source character set and target character set correctly, otherwise it may cause more garbled characters.

4. Use UTF-8 character set:

For new installations of MySQL, it is recommended to use UTF-8 character set as the default character set, which can reduce some character set inconsistency problems. When using the UTF-8 character set, you need to confirm that the character set used by the operating system and each client is UTF-8.

5. Upgrade the client tool:

When upgrading the client tool, you need to confirm whether the new version of the client tool supports the new character set, otherwise the original data may not be able to Display or decode normally.

To sum up, the problem of MySQL Chinese garbled characters is very common, but we can also effectively solve the problem by setting the character set, modifying the MySQL configuration file, using transcoding tools, and using the UTF-8 character set. I hope the introduction in this article will be helpful to you. Don’t panic when you encounter the problem of Chinese garbled characters. You just need to analyze it carefully and find the optimal solution.

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