#
# Copyright (C) 2019 - 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 AddEnrollmentRoleUserIndex < ActiveRecord::Migration[5.2]
  tag :predeploy
  disable_ddl_transaction!

  def change
    add_index :enrollments, [:role_id, :user_id], algorithm: :concurrently
  end
end

Add role and user index on enrollments table
Add role and user index on enrollments table

This helps speed up some `UserSearch` queries

Test Plan:
  - Jenkins passes

flag = none

Change-Id: I4c94a577b363f0fcf6231b52c3283fa5de074c7e
Reviewed-on: https://gerrit.instructure.com/211264
Reviewed-by: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
QA-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Product-Review: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Tested-by: Jenkins
