# # Copyright (C) 2020 - 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 . class DropEnrollmentSectionIndex < ActiveRecord::Migration[5.2] tag :postdeploy def self.up remove_index :enrollments, [:course_section_id] end def self.down add_index :enrollments, [:course_section_id], algorithm: :concurrently end end