View Source mix ash_postgres.rollback (ash_postgres v1.5.23)
Reverts applied migrations in the given repository.
Migrations are expected at "priv/YOUR_REPO/migrations" directory
of the current application but it can be configured by specifying
the :priv key under the repository configuration.
Runs the latest applied migration by default. To roll back to
a version number, supply --to version_number. To roll back a
specific number of times, use --step n. To undo all applied
migrations, provide --all.
This is only really useful if your api or apis only use a single repo.
If you have multiple repos and you want to run a single migration and/or
migrate/roll them back to different points, you will need to use the
ecto specific task, mix ecto.migrate and provide your repo name.
Examples
mix ash_postgres.rollback
mix ash_postgres.rollback -r Custom.Repo
mix ash_postgres.rollback -n 3
mix ash_postgres.rollback --step 3
mix ash_postgres.rollback -v 20080906120000
mix ash_postgres.rollback --to 20080906120000Command line options
--apis- the apis who's repos should be rolledback--all- revert all applied migrations--step/-n- revert n number of applied migrations--to/-v- revert all migrations down to and including version--quiet- do not log migration commands--prefix- the prefix to run migrations on--pool-size- the pool size if the repository is started only for the task (defaults to 1)--log-sql- log the raw sql migrations are running--tenants- roll back tenant migrations--only-tenants- in combo with--tenants, only rolls back the provided tenants, e.gtenant1,tenant2,tenant3--except-tenants- in combo with--tenants, does not rollback the provided tenants, e.gtenant1,tenant2,tenant3