MySQL 5.7.20:无法使用CHARACTER SET'binary'从字符串创建JSON值 [英] Mysql 5.7.20: Cannot create a JSON value from a string with CHARACTER SET 'binary'

问题描述

当导入带有JSON列的表的SQL文件时，我遇到了这个问题.

I am facing this issue when importing an SQL file with a table with JSON column.

数据库具有

编码:utf8mb4

整理:utf8mb4_unicode_ci

这是带有json列的表:

Here's the table with the json column:

CREATE TABLE `tracking_data` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `route` varchar(191) COLLATE utf8mb4_unicode_ci NOT NULL,
  `data` json NOT NULL,
  `user_id` int(10) unsigned NOT NULL,
  `created_at` timestamp NULL DEFAULT NULL,
  `updated_at` timestamp NULL DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

我已从此

I have read answers from this question on stack overflow which suggest the table must be on utf8mb4. Mine's already, but I am facing this issue still.

这仍然是错误:

第XXX行:无法使用CHARACTER SET从字符串创建JSON值 二进制".

Line XXX: Cannot create a JSON value from a string with CHARACTER SET 'binary'.

当我运行show session variables like 'char%';时:

    Variable_name   Value 

character_set_client    utf8mb4 

character_set_connection    utf8mb4 

character_set_database  utf8mb4 

character_set_filesystem    binary 

character_set_results   utf8mb4 

character_set_server    latin1 

character_set_system    utf8 

character_sets_dir  /usr/share/mysql/charsets/ 

我该如何解决? 谢谢！

How can I fix this? Thanks!

推荐答案

如果我的会话字符集是binary，我可以重现您的错误:

I can reproduce your error if my session character set is binary:

mysql [localhost] {msandbox} (test) > set names binary;
Query OK, 0 rows affected (0.00 sec)

mysql [localhost] {msandbox} (test) > insert into tracking_data (route, data, user_id) values ('route', '{"route": "value"}', 1);
ERROR 3144 (22032): Cannot create a JSON value from a string with CHARACTER SET 'binary'.

然后我可以通过将会话字符集设置为与表匹配的方式来修复它:

Then I can fix it by setting the session character set to match the table:

mysql [localhost] {msandbox} (test) > set names utf8mb4;
Query OK, 0 rows affected (0.00 sec)

mysql [localhost] {msandbox} (test) > insert into tracking_data (route, data, user_id) values ('route', '{"route": "value"}', 1);
Query OK, 1 row affected (0.01 sec)

所以我得出结论，您已将会话字符集设置为binary.

So I conclude that you have set the session character set to binary.

运行show session variables like 'char%';并查看其内容.

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