db/primary_migrate/20190524205306_add_index_to_backup_code_configuration.rb
class AddIndexToBackupCodeConfiguration < ActiveRecord::Migration[5.1]
disable_ddl_transaction!
def change
add_index(
:backup_code_configurations,
%i[created_at user_id],
order: { created_at: :asc },
algorithm: :concurrently,
)
end
end