mysql exports garbled characters

MySQL is a common relational database management system, often used for data storage and management. In the process of using MySQL for data management, sometimes you encounter the problem of garbled characters when exporting data. Garbled exported data may cause the data to be unreadable or even lost. Therefore, this article will focus on solving the problem of MySQL exporting garbled characters.

1. Reasons why the exported file is garbled

In MySQL, there may be many reasons why the exported data is garbled. The following are some common reasons:

1. Encoding mismatch

When the encoding format of the exported file does not match the encoding format of the MySQL database, garbled characters will appear. For example, if the export file uses UTF-8 encoding format, and the MySQL database uses GBK encoding format, the export file will be garbled.

2. Incorrect export format

MySQL supports multiple data export formats, such as CSV, TXT, and SQL. If the export file format is incorrect, the exported data may also be garbled.

3. Special characters

If the data contains special characters or incorrectly encoded characters, it may also cause the exported data to be garbled.

2. Methods to solve the garbled export file

1. Confirm the database encoding

First, we need to confirm the encoding format used by the MySQL database. You can view it with the following command:

SHOW VARIABLES LIKE "%character%";

If the character set and proofreading rules in the view results do not match the encoding format that needs to be exported, you need to modify the encoding format of MySQL.

2. Change MySQL encoding format

To change the encoding format of MySQL, you need to modify it in the MySQL configuration file. Just add the following statement to the MySQL configuration file my.cnf:

[client]
default-character-set=utf8mb4

[mysqld]
init_connect='SET NAMES utf8mb4'
character-set-server=utf8mb4
collation-server=utf8mb4_unicode_ci

After the modification is completed, restart the MySQL database and the modified encoding format will take effect.

3. Export format settings

When exporting data, you need to specify the correct export format. If you need to save it as a CSV file or TXT file, you can use the following command:

SELECT * INTO OUTFILE '<FILE_PATH>.csv' 
    FIELDS TERMINATED BY ',' ENCLOSED BY '"' 
    LINES TERMINATED BY '
' 
FROM <TABLE_NAME>;

Among them, represents the file saving path, and represents the data table that needs to be exported.

4. Use an editor to convert the encoding format

If none of the above methods can solve the garbled problem in data export, you can also use some professional text editors, such as Notepad or UltraEdit. These editors can convert files into specified encoding formats and garbled files into correct encoding formats.

Summary

In the MySQL database, garbled data export is often encountered. To solve this problem, you must first confirm whether the encoding format of the database is correct. You can confirm this by checking the configuration file and using commands. If it is indeed a problem of encoding format mismatch, you can use the editor tool to convert the format. Of course, you must also ensure that the export format is set correctly to ensure the correctness of the data export. In daily use of MySQL database, always pay attention to the matching of data encoding format to avoid garbled characters.

The above is the detailed content of mysql exports garbled characters. For more information, please follow other related articles on the PHP Chinese website!