What those hex filenames mean, why migrations silently applied to the wrong database for two months, and how to widen a CHECK constraint without quietly breaking it. Alembic is the migration tool for SQLAlchemy. Most tutorials get you as far as alembic revision --autogenerate and stop, which le...
Source: [Dev.to](https://dev.to/boaz_leleina_d884b75c4486/alembic-in-practice-structure-revisions-and-the-traps-sqlite-sets-21ac)