sqlite 数据库迁移至postgresql

参考资料

1. 数据导出

python manage.py dumpdata [appname] > appname_data.json

2. 建新表

python manage.py migrate

python manage.py shell
>>> from django.contrib.contenttypes.models import ContentType
>>> ContentType.objects.all().delete()
>>> quit()

3. 导入数据

python manage.py loaddata data.json