Cannot complete Flask-Migration

Question

I\'ve setup a local Postgres DB with SQLAlchemy and cannot commit my first entry. I keep on getting this error...

ProgrammingError: (ProgrammingError) relation          


        

Answer 1

It means that the entry in table alembic_version of your db is "39408d6b248d" and there's no migration file related to it in migrations folder (by default migrations/versions).

So better drop the table alembic_version from your db and do

$ python app.py db history to get the new head of migrations, say, 5301c31377f2

Now run $ python app.py db stamp 5301c31377f2 to let alembic know that it's your migration head (which gets stored in table alembic_version).