View Source mix ecto.rollback (Ecto SQL v3.9.2)
Reverts applied migrations in the given repository.
Migrations are expected at "priv/YOUR_REPO/migrations" directory
of the current application, where "YOUR_REPO" is the last segment
in your repository name. For example, the repository
will use "priv/repo/migrations". The repository
will use "priv/my_repo/migrations".
You can configure a repository to use another directory by specifying
:priv key under the repository configuration. The "migrations"
part will be automatically appended to it. For instance, to use
config :my_app, MyApp.Repo, priv: "priv/custom_repo"
This task rolls back the last 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
The repositories to rollback are the ones specified under the
:ecto_repos option in the current app configuration. However,
-r option is given, it replaces the
If a repository has not yet been started, one will be started outside your application supervision tree and shutdown afterwards.
$ mix ecto.rollback $ mix ecto.rollback -r Custom.Repo $ mix ecto.rollback -n 3 $ mix ecto.rollback --step 3 $ mix ecto.rollback --to 20080906120000
Command line options
--all- run all pending migrations
--log-migrations-sql- log SQL generated by migration commands
--log-migrator-sql- log SQL generated by the migrator, such as transactions, table locks, etc
--migrations-path- the path to load the migrations from, defaults to
"priv/repo/migrations". This option may be given multiple times in which case the migrations are loaded from all the given directories and sorted as if they were in the same one
--no-compile- does not compile applications before migrating
--no-deps-check- does not check dependencies before migrating
--pool-size- the pool size if the repository is started only for the task (defaults to 2)
--prefix- the prefix to run migrations on
--quiet- do not log migration commands
--repo- the repo to migrate
-n- revert n migrations
--strict-version-order- abort when applying a migration with old timestamp (otherwise it emits a warning)
--to- revert all migrations down to and including version
--to-exclusive- revert all migrations down to and excluding version