migrations 리셋하는법
1. Remove the all migrations files within your project
Go through each of your projects apps migration folder and remove everything inside, except the __init__.py file.
Or if you are using a unix-like OS you can run the following script (inside your project dir):
find . -path "*/migrations/*.py" -not -name "__init__.py" -delete
find . -path "*/migrations/*.pyc" -delete
2. Drop the current database, or delete the db.sqlite3 if it is your case.
3. Create the initial migrations and generate the database schema:
python manage.py makemigrations
python manage.py migrate
And you are good to go.
출처: <https://simpleisbetterthancomplex.com/tutorial/2016/07/26/how-to-reset-migrations.html>