Creates a new database/schema¹ with the same name if the database/schema¹ was dropped. Drops the database/schema¹ if possible, or performs a soft reset if the environment does not allow deleting databases/schemas¹. Migrate reset is a development command and should never be used in a production environment. You can also reset the database yourself to undo manual changes or db push experiments by running:
The database schema has drifted away from the end-state of the migration history. Migration history conflicts caused by modified or missing migrations. The migrate dev command will prompt you to reset the database in the following scenarios: Triggers the generation of artifacts (for example, the Prisma Client). Applies all unapplied migrations to the development database and updates the _prisma_migrations table. Generates a new migration from any changes you made to the Prisma schema before running migrate dev. Applies pending migrations to the shadow database (for example, new migrations created by colleagues). Replays the existing migration history in the shadow database in order to detect schema drift (edited or deleted migration file, or a manual changes to the database schema). Migrate dev is a development command and should never be used in a production environment. $ npx prisma migrate dev Create and apply migrations In a development environment, use the migrate dev command to generate and apply migrations: It does not use the Prisma schema file to fetch the models. The prisma migrate deploy command, which is used to deploy changes to staging, testing, and production environments, only runs migration files. 
For example, you can customize a migration to mitigate data loss that would be caused by a breaking change.
As you start to customize migrations, your migration history contains information that cannot be represented in the Prisma schema. Source-controlling the schema.prisma file is not enough - you must include your migration history. This includes the prisma/migrations/migration_lock.toml file, which is used to detect if you have attempted to change providers. You must commit the entire prisma/migrations folder to source control. If Prisma Migrate reports a missing or edited migration that has already been applied, we recommend fixing the root cause (restoring the file or reverting the change) rather than resetting. Modify an existing migration that has already been applied in a development environment by changing the value of VARCHAR(550) to VARCHAR(560):Ī change that does not appear to break anything after a migrate reset can hide problems - you may end up with a bug in production that you cannot replicate in development, or the other way around - particularly if the change concerns a highly customized migration. The following scenario simulates a change that creates a seemingly harmless inconsistency: Doing so can lead to inconsistencies between development and production environment migration histories, which may have unforeseen consequences - even if the change does not appear to break anything at first. 
In general, you should not edit or delete a migration that has already been applied. If you change or delete a migration ( not recommended), the next steps depend on whether you are in a development environment (and therefore using migrate dev) or a production / testing environment (and therefore using migrate deploy).ĭo not edit or delete migrations that have been applied
If an applied migration has been changed. If an applied migration has been deleted. If a migration has been run against the database. This folder is the source of truth for the history of your data model.Ī _prisma_migrations table in the database, which is used to check:
0 kommentar(er)
