gitlab-org--gitlab-foss/db/migrate/20170707184244_remove_wrong...

class RemoveWrongVersionsFromSchemaVersions < ActiveRecord::Migration[4.2]
  DOWNTIME = false

  def up
    execute("DELETE FROM schema_migrations WHERE version IN ('20170723183807', '20170724184243')")
  end

  def down
  end
end
Add version 4.2 to all existing migrations DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912 2018-11-13 07:27:31 +00:00			`class RemoveWrongVersionsFromSchemaVersions < ActiveRecord::Migration[4.2]`
Make wrong migrations idempotent 2017-07-07 18:01:30 +00:00			`DOWNTIME = false`

			`def up`
			`execute("DELETE FROM schema_migrations WHERE version IN ('20170723183807', '20170724184243')")`
			`end`

			`def down`
fix migrations in the future 2017-07-07 17:03:13 +00:00			`end`
			`end`