canvas-lms/db/migrate/20110928191843_add_index_discussion_topics_assignment_id.rb

class AddIndexDiscussionTopicsAssignmentId < ActiveRecord::Migration
  tag :predeploy

  def self.up
    add_index :discussion_topics, [:assignment_id]
  end

  def self.down
    remove_index :discussion_topics, [:assignment_id]
  end
end