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# frozen_string_literal: true
class AddUniquenessIndexToLabelTitleAndGroup < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
GROUP_AND_TITLE = [:group_id, :title]
def up
add_concurrent_index :labels, GROUP_AND_TITLE, where: "labels.project_id IS NULL", unique: true, name: "index_labels_on_group_id_and_title_unique"
remove_concurrent_index :labels, GROUP_AND_TITLE, name: "index_labels_on_group_id_and_title"
end
def down
add_concurrent_index :labels, GROUP_AND_TITLE, where: "labels.project_id IS NULL", unique: false, name: "index_labels_on_group_id_and_title"
remove_concurrent_index :labels, GROUP_AND_TITLE, name: "index_labels_on_group_id_and_title_unique"
end
end
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