Django当我尝试将迁移迁移迁移到PostgreSQL时，它抛出一个异常psycopg2.ProgrammingError

我将sqlite3迁移到postgresql数据库，并尝试迁移，但它始终会引发异常，我也在使用drf

以下是我的输出：

Operations to perform:
  Apply all migrations: admin, auth, authtoken, contenttypes, sessions
Running migrations:
  Applying contenttypes.0002_remove_content_type_name...Traceback (most recent call last):
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 65, in execute
    return self.cursor.execute(sql, params)
psycopg2.ProgrammingError: column "name" of relation "django_content_type" does not exist

上述异常是以下异常的直接原因：

Traceback (most recent call last):
  File "./manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 355, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 204, in handle
    fake_initial=fake_initial,
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 115, in migrate
    state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/migrations/migration.py", line 129, in apply
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/home/dawid/django/venv/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/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 515, in alter_field
    old_db_params, new_db_params, strict)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/postgresql/schema.py", line 112, in _alter_field
    new_db_params, strict,
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 684, in _alter_field
    params,
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 120, in execute
    cursor.execute(sql, params)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 80, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 65, in execute
    return self.cursor.execute(sql, params)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise
    raise value.with_traceback(tb)
  File "/home/dawid/django/venv/lib/python3.6/site-packages/django/db/backends/utils.py", line 65, in execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: column "name" of relation "django_content_type" does not exist

---

你可以试试这些解决方案

如果有能力，可以转储/刷新数据库。然后尝试迁移到PostgreSQL

遵循以下步骤：

• 将数据库转储到JSON

  ./manage.py dumpdata --natural-primary --natural-foreign > data.json
  

• 在

  settings.py

  中更改默认数据库的设置，即切换到

  PostgreSQL

• 同步数据库

  ./manage.py migrate
  

• 加载存储在

  data.json中的数据
  
  ./manage.py loaddata data.json
  
  

---

我的输出忘记了^当您更改数据库时，是否导入了

sqlite

数据？在此更改之前，您采取了哪些步骤，例如1。更新了设置，2。数据库转储sqlite等。

./manage.py loaddata data.json