What are SQLAlchemy migrations and how do I create a revision?
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What are SQLAlchemy migrations and how do I create a revision?
SQLAlchemy migrations are a way to manage changes to your database schema over time. You can create a revision using Alembic, which is a lightweight database migration tool for use with SQLAlchemy. To create a revision, you would typically run the command alembic revision -m 'your_message_here'.
Can you explain what Alembic is?
Alembic is a database migration tool for SQLAlchemy. It allows you to manage database schema changes by generating migration scripts that can be applied to your database.
How do I apply a migration after creating a revision?
To apply a migration, you can use the command alembic upgrade head. This will apply all the migrations up to the latest revision.
What if I want to downgrade a migration?
You can downgrade a migration using the command alembic downgrade <revision_id>, where <revision_id> is the ID of the revision you want to revert to.
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