Spent the whole night to solve this problem.
I wanted to use the flask-migrate plugin for database version management, but I kept encountering this issue.
INFO [alembic.runtime.migration] Context impl MySQLImpl.
INFO [alembic.runtime.migration] Will assume non-transactional DDL.
INFO [alembic.env] No changes in schema detected.
I have tried various methods, importing the content from
models in every place, adjusting the use of flask script, and so on...
Because my database has already been started, my database is consistent with the content in
So this sentence won't take effect...
Therefore, the best time to migrate is before establishing the database...
Then I started from scratch, and after deleting the database, the migration was successful.
I noticed that most of the issues encountered by other users were due to not importing the content from
models, so this needs to be taken into account.
Be careful not to have circular dependencies.
Migrate should be done after