How to solve the problem of MySQL exporting garbled characters

When using a MySQL database, it is often necessary to export data from one database to another. However, sometimes the exported data will be garbled, which may cause certain troubles in our work. So, how to solve the problem of MySQL exporting garbled characters?

1. Understand the causes of garbled code problems
There may be many reasons for exporting garbled codes, such as different client tools used when exporting data, different character sets, etc., but the essence is caused by inconsistent character sets. of. The default character set used by MySQL is UTF-8. If the character set of the client tool used when exporting is not UTF-8, garbled characters may easily occur.

2. Solution

1. Specify the character set when exporting
   You can solve the problem of garbled characters by specifying the character set when exporting data. When using the mysqldump command to export data, you can use the --default-character-set parameter to specify the character set, as shown below:

mysqldump -u root -p database_name --default-character-set=utf8 > data.sql

Among them, the --default-character-set=utf8 parameter indicates that the character set will be The exported data character set is set to utf8. If the exported data contains Chinese, the Chinese characters will be saved in UTF-8 encoding, so that the exported data will not be garbled.

2. Modify the MySQL configuration file
   If you are exporting data using the command line tool that comes with MySQL or using tools such as Navicat, and still cannot solve the garbled problem, you can try to modify the MySQL configuration file my. cnf. The specific steps are as follows:

(1) Enter the directory where the MySQL configuration file is located. The common location is /etc/mysql or /usr/local/mysql/etc/.

(2) Find the my.cnf file and open it.

(3) Add the following two lines of configuration under the [client] and [mysqldump] nodes, indicating the client and the character set used when exporting data respectively:

[client]
default-character-set=utf8

[mysqldump]
default-character-set=utf8

(4) Save my .cnf file and restart the MySQL service.

The advantage of this method is that after modifying the my.cnf file, all client tools that use this MySQL service will use the UTF-8 character set by default, so that the problem of garbled characters will no longer occur.

3. Modify client tool settings
   If the above two methods cannot solve the MySQL export garbled problem, you can try to modify the character set settings of the client tool. For example, when using tools such as Navicat, you can set the character set to UTF-8 when connecting to the MySQL database.

3. Summary
The problem of MySQL exporting garbled characters is a common problem, but as long as we understand its causes and master the correct solutions, we can avoid this problem from causing unnecessary trouble to us. In actual work, we should adopt corresponding solutions according to specific situations.

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