# frozen_string_literal: true class AddAuthorIdIndexAndFkToReleases < ActiveRecord::Migration[5.0] include Gitlab::Database::MigrationHelpers DOWNTIME = false disable_ddl_transaction! def up add_concurrent_index :releases, :author_id add_concurrent_foreign_key :releases, :users, column: :author_id, on_delete: :nullify end def down remove_foreign_key :releases, column: :author_id remove_concurrent_index :releases, column: :author_id end end