To run a specific migration up or down, use db:migrate:up
or db:migrate:down
.
Up a specific migration:
rake db:migrate:up VERSION=20090408054555
rails db:migrate:up VERSION=20090408054555
Down a specific migration:
rake db:migrate:down VERSION=20090408054555
rails db:migrate:down VERSION=20090408054555
The version number in the above commands is the numeric prefix in the migration’s filename. For example, to migrate to the migration 20160515085959_add_name_to_users.rb
, you would use 20160515085959
as the version number.