canvas-lms/db/migrate/20180511152330_fix_assignme...

29 lines
1.2 KiB
Ruby

#
# Copyright (C) 2018 - 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 FixAssignmentGradingIndexes < ActiveRecord::Migration[5.1]
tag :postdeploy
disable_ddl_transaction!
def up
remove_index :assignments, :grader_section_id if index_exists?(:assignments, :grader_section_id)
remove_index :assignments, :final_grader_id if index_exists?(:assignments, :final_grader_id)
add_index :assignments, :grader_section_id, where: "grader_section_id IS NOT NULL", algorithm: :concurrently
add_index :assignments, :final_grader_id, where: "final_grader_id IS NOT NULL", algorithm: :concurrently
end
end