View Source mix ash_postgres.rollback (ash_postgres v2.4.8)
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 domains 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 20080906120000
Command line options
--domains
- the domains 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