如何修复 Django 数据库错误。我正在将 MongoDB 与 Djongo 一起使用。
一切都工作正常，直到最近我决定添加 NewApp。每当我尝试迁移时，它都会向我打招呼 django.db.utils.DatabaseError 。
我尝试手动重置数据库以及从终端重置数据库，但没有成功。
我认为这非常简单，但我对 Django 和 MongoDB 不太熟悉，似乎不知道如何修复它，任何帮助将不胜感激。
错误如下所示。
Not implemented alter command for SQL ALTER TABLE "articles_article" ADD COLUMN "author_id" int NOT NULL
Applying articles.0002_article_author...Traceback (most recent call last):
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/cursor.py", line 51, in execute
self.result = Query(
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 783, in __init__
self._query = self.parse()
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 875, in parse
raise e
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 856, in parse
return handler(self, statement)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 888, in _alter
query = AlterQuery(self.db, self.connection_properties, sm, self._params)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 425, in __init__
super().__init__(*args)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 84, in __init__
super().__init__(*args)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 62, in __init__
self.parse()
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 435, in parse
self._add(statement)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/sql2mongo/query.py", line 598, in _add
raise SQLDecodeError(err_key=tok.value,
djongo.exceptions.SQLDecodeError:
Keyword: int
Sub SQL: ALTER TABLE "articles_article" ADD COLUMN "author_id" int NOT NULL
FAILED SQL: ('ALTER TABLE "articles_article" ADD COLUMN "author_id" int NOT NULL',)
Params: ([],)
Version: 1.3.3
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/utils.py", line 86, in _execute
return self.cursor.execute(sql, params)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/cursor.py", line 59, in execute
raise db_exe from e
djongo.database.DatabaseError
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/core/management/base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/core/management/base.py", line 369, in execute
output = self.handle(*args, **options)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/core/management/commands/migrate.py", line 231, in handle
post_migrate_state = executor.migrate(
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/migrations/executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/migrations/executor.py", line 245, in apply_migration
state = migration.apply(state, schema_editor)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/migrations/migration.py", line 124, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/migrations/operations/fields.py", line 110, in database_forwards
schema_editor.add_field(
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/base/schema.py", line 480, in add_field
self.execute(sql, params)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/base/schema.py", line 142, in execute
cursor.execute(sql, params)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/utils.py", line 100, in execute
return super().execute(sql, params)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/utils.py", line 68, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/utils.py", line 86, in _execute
return self.cursor.execute(sql, params)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/django/db/backends/utils.py", line 86, in _execute
return self.cursor.execute(sql, params)
File "/Users/username/opt/anaconda3/envs/restApi/lib/python3.8/site-packages/djongo/cursor.py", line 59, in execute
raise db_exe from e
django.db.utils.DatabaseError
感谢您的宝贵时间。
嗨，这种情况经常发生。只需三个简单步骤即可完成以下操作
转到应用程序的迁移目录
删除 0001_initial.py 或 allnumbers_initial.py
运行 makemigrations 并再次迁移。你的问题一定会得到解决。
pip install sqlparse ==0.2.4python manage.py makemigrationspython manage.py migratepython manage.py runserver我也遇到了同样的错误，如果其他提到的方法都不起作用，那么可能是您的
sqlparse0.4.10.2.4要安装，请使用 pip 命令：
pip install sqlparse==0.2.4
我也遇到过这种情况。我通过将 Django 从 2.1.7 升级到 3.1.7、删除迁移文件并再次运行 makemigrations 解决了这个问题。然后，当我迁移时，就没有再出现错误了。显然Django 2.1.7生成的迁移文件与3.1.7不同。
编辑： 如果使用“filter”查询时遇到相同的错误，请尝试将 Django 版本降级到 3.0.5。
pip install --install-option="--extras-require=json" git+https://github.com/nesdis/djongo.git@master
我删除了所有迁移（带有迁移文件夹）并解决了