Django删除了DDBB表，无法再迁移：没有这样的表错误

Question

我已从sqlite DDBB中删除了一个表，因为我想进行一些更改，并且无法通过简单更新Django中的模型来进行更改。从那时起，我将无法再次执行迁移并为我的模型获取新表，并收到错误“ django.db.utils.OperationalError：无此类表：shop_productitem”。

我尝试过其他类似线程中的许多提示，但没有走运。例如，我尝试过this和this，但无法解决问题。我的理解是，如果我运行makemigrations然后迁移模型，则ddbb应该使用新的规范进行更新，但是在这种特定情况下，我可能会弄错。

有人可以向我指出问题所在吗？我一直在寻找年龄，我担心我没有必要的知识来解决这个问题。

请在下面找到我收到的整个错误消息：

    Applying shop.0002_auto_20200218_1958...Traceback (most recent call last):
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 303, in execute
    return Database.Cursor.execute(self, query, params)
sqlite3.OperationalError: no such table: shop_productitem

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
    utility.execute()
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/__init__.py", line 365, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/base.py", line 335, in execute
    output = self.handle(*args, **options)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 200, in handle
    fake_initial=fake_initial,
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/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 "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/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 "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/migration.py", line 122, in apply
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/migrations/operations/fields.py", line 216, in database_forwards
    schema_editor.alter_field(from_model, from_field, to_field)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 133, in alter_field
    super().alter_field(model, old_field, new_field, strict=strict)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 509, in alter_field
    old_db_params, new_db_params, strict)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 330, in _alter_fi
eld
    self._remake_table(model, alter_field=(old_field, new_field))
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 260, in _remake_t
able
    disable_constraints=False,
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 95, in alter_db_t
able
    super().alter_db_table(model, old_db_table, new_db_table)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 383, in alter_db_tab
le
    "new_table": self.quote_name(new_db_table),
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 117, in execute
    cursor.execute(sql, params)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 100, in execute
    return super().execute(sql, params)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 68, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 77, in _execute_with_wrapp
ers
    return executor(sql, params, many, context)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "/home/EconopecoWebApp/.virtualenvs/django2/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py", line 303, in execute
    return Database.Cursor.execute(self, query, params)
django.db.utils.OperationalError: no such table: shop_productitem
非常感谢你，歪斜

我已从sqlite DDBB中删除了一个表，因为我想进行一些更改，并且无法通过简单更新Django中的模型来进行更改。从那时起，我将无法执行...

Answer 1

您是否尝试过从migrations

Answer 2

如果您负担得起数据库丢失的数据，则只需从其文件夹中删除旧的数据库文件。从迁移文件夹中删除所有迁移。然后运行makemigrations和migrate，这将创建新的sqllight DB