discourse/db/migrate/20120416201606_add_reply_to_to_posts.rb

# frozen_string_literal: true

class AddReplyToToPosts < ActiveRecord::Migration[4.2]
  def change
    add_column :posts, :reply_to_post_number, :integer, null: true
    add_index :posts, :reply_to_post_number
  end
end