运行时出现以下错误./manage.py reset app1：
Error: Error: app1 couldn't be reset. Possible reasons:
* The database isn't running or isn't configured correctly.
* At least one of the database tables doesn't exist.
* The SQL was invalid.
Hint: Look at the output of 'django-admin.py sqlreset app2'. That's the SQL this command wasn't able to run.
The full error: (1217, 'Cannot delete or update a parent row: a foreign key constraint fails')
具有 OneToOneField 的模型与另一个应用程序中的另一个模型（比如说 app2）。我正在使用 MySQL InnoDB。更准确地说，OneToOneField 是在 app2 的模型中声明的。
我该如何摆脱这个错误？
更新： sqlreset 命令的输出是：
(应用程序1)
BEGIN;
DROP TABLE `app1_instance`;
DROP TABLE `app1_instancegroup`;
CREATE TABLE `app1_instancegroup` (
`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,
-- some more fields
)
;
CREATE TABLE `app1_instance` (
`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,
`belongs_to_id` integer NOT NULL,
-- some more fields
)
;
ALTER TABLE `app1_instance` ADD CONSTRAINT `belongs_to_id_refs_id_455b868f` FOREIGN KEY (`belongs_to_id`) REFERENCES `app1_instancegroup` (`id`);
CREATE INDEX `app1_instance_belongs_to_id` ON `app1_instance` (`belongs_to_id`);
COMMIT;
(应用程序2)
BEGIN;
DROP TABLE `app2_team`;
CREATE TABLE `app2_team` (
`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY,
`instance_group_id` integer NOT NULL UNIQUE,
-- some more fields
)
;
ALTER TABLE `app2_team` ADD CONSTRAINT `instance_group_id_refs_id_39493b52` FOREIGN KEY (`instance_group_id`) REFERENCES `app1_instancegroup` (`id`);
COMMIT;