错误 1115 (42000):未知字符集:'utf8mb4'

ERROR 1115 (42000): Unknown character set: #39;utf8mb4#39;(错误 1115 (42000):未知字符集:utf8mb4)

问题描述

我有一个 MySQL 转储，我试图用它来恢复:

I have a MySQL dump, which I tried to restore with:

mysql -u"username" -p"password" --host="127.0.0.1" mysql_db < mysql_db

然而，这引发了一个错误:

However, this threw an error:

ERROR 1115 (42000) at line 3231: Unknown character set: 'utf8mb4'

这是第 3231-3233 行:

This is lines 3231-3233:

/*!50003 SET character_set_client  = utf8mb4 */ ;
/*!50003 SET character_set_results = utf8mb4 */ ;
/*!50003 SET collation_connection  = utf8mb4_general_ci */ ;

我使用的是 MySQL 5.1.69.我该如何解决这个错误?

I am using MySQL 5.1.69. How can I solve this error?

推荐答案

您的版本不支持该字符集，我相信是 5.5.3 引入的.你应该将你的 mysql 升级到你用来导出这个文件的版本.

Your version does not support that character set, I believe it was 5.5.3 that introduced it. You should upgrade your mysql to the version you used to export this file.

错误很明显:您在代码中设置了某个字符集，但您的 mysql 版本不支持它，因此不知道它.

The error is then quite clear: you set a certain character set in your code, but your mysql version does not support it, and therefore does not know about it.

根据https://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html :

utf8mb4 是 utf8 的超集

utf8mb4 is a superset of utf8

所以也许你有机会把它变成 utf8，闭上眼睛并抱有希望，但这取决于你的数据，我不推荐它.

so maybe there is a chance you can just make it utf8, close your eyes and hope, but that would depend on your data, and I'd not recommend it.

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