COLLATION'utf8_general_ci'对CHARACTER SET'latin1'无效 [英] COLLATION 'utf8_general_ci' is not valid for CHARACTER SET 'latin1'

问题描述

我正在尝试解决字符编码问题-以前我们为utf8_general_ci列设置了归类设置，由于该字符对重音不敏感，因此导致出现问题.

I am trying to fix a character encoding issue - previously we had the collation set for this column utf8_general_ci which caused issues because it is accent insensitive..

我正试图在数据库中查找所有可能受到影响的条目.

I'm trying to find all the entries in the database that could have been affected.

set names utf8;
select * from table1 t1 join table2 t2 on (t1.pid=t2.pid and t1.id != t2.id) collate utf8_general_ci;

但是，这会产生错误:

ERROR 1253 (42000): COLLATION 'utf8_general_ci' is not valid for CHARACTER SET 'latin1'

1. 现在使用DEFAULT CHARACTER SET utf8
定义了数据库
2. 该表是用CHARSET=utf8
定义的
3. "pid"列的定义如下:CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
4. 服务器版本为服务器版本:5.5.37-MariaDB-0ubuntu0.14.04.1(Ubuntu)

1. The database is now defined with DEFAULT CHARACTER SET utf8
2. The table is defined with CHARSET=utf8
3. The "pid" column is defined with: CHARACTER SET utf8 COLLATE utf8_bin NOT NULL
4. The server version is Server version: 5.5.37-MariaDB-0ubuntu0.14.04.1 (Ubuntu)

问题:当表格/架构定义中的任何地方似乎都不存在latin1时，为什么会出现关于latin1的错误?

Question: Why am I getting an error about latin1 when latin1 doesn't seem to be present anywhere in the table / schema definition?

MariaDB [(none)]> SHOW VARIABLES LIKE '%char%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | latin1                     |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | latin1                     |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)

MariaDB [(none)]> SHOW VARIABLES LIKE '%collation%';
+----------------------+-------------------+
| Variable_name        | Value             |
+----------------------+-------------------+
| collation_connection | utf8_general_ci   |
| collation_database   | latin1_swedish_ci |
| collation_server     | latin1_swedish_ci |
+----------------------+-------------------+

推荐答案

首先运行此查询

SHOW VARIABLES LIKE '%char%';

您有character_set_server='latin1'

如果是，请进入您的配置文件my.cnf并添加或取消注释以下行:

If so,go into your config file,my.cnf and add or uncomment these lines:

character-set-server = utf8
collation-server = utf8_unicode_ci

重新启动服务器. 是的，聚会晚了，只是遇到了同样的问题.

Restart the server. Yes late to the party,just encountered the same issue.

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