Handling Mistakes and Avoiding Pitfalls
Explore effective techniques for managing migrations within Entity Framework Core. Learn how to safely remove or revert migrations, reset migration history, and avoid common mistakes such as neglecting reverse engineering or adopting non-standard naming. This lesson helps you maintain a reliable migration workflow and prevent errors in database updates.
Overview
It is common to run into some challenges while working with migrations and making changes to the data models. In this lesson, we’ll review tips for avoiding common mistakes when working with EF Core.
Removing a migration
At some point, you may discover that a previously added migration is not needed. We can remove any migration not applied to the database using the code sample below:
This command removes the migration and reverts the model to a previous snapshot.
Note: It is good practice to avoid removing migrations applied to production databases. If a migration is removed, we can’t revert those migrations from the databases, which might break the assumptions made by subsequent migrations.
Reverting a migration
What happens to a migration applied to a database? Can it be removed? Yes, we can remove migrations by reverting to a previous migration. Let’s go through how to do this with ...