canvas-lms/db/migrate/20170315185944_add_migratio...

32 lines
1.1 KiB
Ruby

# frozen_string_literal: true
#
# Copyright (C) 2017 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
class AddMigrationIdIndexToAttachments < ActiveRecord::Migration[4.2]
disable_ddl_transaction!
tag :postdeploy
def change
add_index :attachments,
%i[context_id context_type migration_id],
where: "migration_id IS NOT NULL",
name: "index_attachments_on_context_and_migration_id",
algorithm: :concurrently
end
end