django.db.utils.OperationalError: (1267, "Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '='")
El error anterior obviamente es causado por la coincidencia del juego de caracteres. Así que inicie sesión en MySQL para modificar la configuración correspondiente.
Primero verifique la configuración de la base de datos MySQL:
mysql> show variables like '%coll%';
+----------------------+--------------------+
| Variable_name | Value |
+----------------------+--------------------+
| collation_connection | latin1_swedish_ci |
| collation_database | latin1_swedish_ci |
| collation_server | latin1_swedish_ci |
+----------------------+--------------------+
Modifique la configuración de la base de datos al juego de caracteres utf8:
SET collation_connection = utf8_general_ci;
SET collation_database = utf8_general_ci;
SET collation_server = utf8_general_ci;
Pero el error no ha cambiado después de acceder al servicio, luego verifique el juego de caracteres de la tabla
mysql> show create table test;
+----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table |
+----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| test | CREATE TABLE `test` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(200) CHARACTER SET latin1 NOT NULL,
`depth` int(11) NOT NULL,
`url` varchar(200) CHARACTER SET latin1 NOT NULL,
`creater_id` int(11) NOT NULL,
`parent_id` int(11) DEFAULT NULL,
`app` varchar(20) CHARACTER SET latin1 NOT NULL,
`createtime` datetime(6) NOT NULL,
`operatetime` datetime(6) NOT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `test_name_parent_id_96346d13_uniq` (`name`,`parent_id`),
KEY `test_creater_id_0825cbdf_fk_auth_user_id` (`creater_id`),
KEY `test_parent_id_03eda650_fk_test_id` (`parent_id`),
CONSTRAINT `test_creater_id_0825cbdf_fk_auth_user_id` FOREIGN KEY (`creater_id`) REFERENCES `auth_user` (`id`),
CONSTRAINT `test_parent_id_03eda650_fk_test_id` FOREIGN KEY (`parent_id`) REFERENCES `test` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci |
+----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
Al ver que el juego de caracteres de la tabla ya es utf8mb4, verifique la configuración de cada campo:
mysql> show full columns from dataset_folder;
+-------------+--------------+-------------------+------+-----+---------+----------------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------------+--------------+-------------------+------+-----+---------+----------------+---------------------------------+---------+
| id | int(11) | NULL | NO | PRI | NULL | auto_increment | select,insert,update,references | |
| name | varchar(200) | latin1_swedish_ci | NO | MUL | NULL | | select,insert,update,references | |
| depth | int(11) | NULL | NO | | NULL | | select,insert,update,references | |
| url | varchar(200) | latin1_swedish_ci | NO | | NULL | | select,insert,update,references | |
| creater_id | int(11) | NULL | NO | MUL | NULL | | select,insert,update,references | |
| parent_id | int(11) | NULL | YES | MUL | NULL | | select,insert,update,references | |
| app | varchar(20) | latin1_swedish_ci | NO | | NULL | | select,insert,update,references | |
| createtime | datetime(6) | NULL | NO | | NULL | | select,insert,update,references | |
| operatetime | datetime(6) | NULL | NO | | NULL | | select,insert,update,references | |
+-------------+--------------+-------------------+------+-----+---------+----------------+---------------------------------+---------+
Cuando vea los personajes en el campo latin1_swedish_ci, diríjase a utf8:
mysql> alter table dataset_folder convert to character set utf8mb4 collate utf8mb4_general_ci;
Query OK, 0 rows affected (0.01 sec)
Records: 0 Duplicates: 0 Warnings: 0
mysql> show full columns from dataset_folder; +-------------+--------------+--------------------+------+-----+---------+----------------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------------+--------------+--------------------+------+-----+---------+----------------+---------------------------------+---------+
| id | int(11) | NULL | NO | PRI | NULL | auto_increment | select,insert,update,references | |
| name | varchar(200) | utf8mb4_general_ci | NO | MUL | NULL | | select,insert,update,references | |
| depth | int(11) | NULL | NO | | NULL | | select,insert,update,references | |
| url | varchar(200) | utf8mb4_general_ci | NO | | NULL | | select,insert,update,references | |
| creater_id | int(11) | NULL | NO | MUL | NULL | | select,insert,update,references | |
| parent_id | int(11) | NULL | YES | MUL | NULL | | select,insert,update,references | |
| app | varchar(20) | utf8mb4_general_ci | NO | | NULL | | select,insert,update,references | |
| createtime | datetime(6) | NULL | NO | | NULL | | select,insert,update,references | |
| operatetime | datetime(6) | NULL | NO | | NULL | | select,insert,update,references | |
+-------------+--------------+--------------------+------+-----+---------+----------------+---------------------------------+---------+
9 rows in set (0.00 sec)
Puedes ver que también se ha modificado la configuración del campo.
Visite el servicio nuevamente y devuelva los datos correctamente.