class AddIndexAccountAndReblogOfIdToStatuses < ActiveRecord::Migration[5.1] disable_ddl_transaction! def up # This index has been superseded by migration 20171125185353 # add_index :statuses, [:account_id, :reblog_of_id], algorithm: :concurrently end def down remove_index :statuses, [:account_id, :reblog_of_id] if index_exists?(:statuses, [:account_id, :reblog_of_id]) end end