20171226094803_more_faster_index_on_notifications.rb 315 B

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  1. class MoreFasterIndexOnNotifications < ActiveRecord::Migration[5.1]
  2. disable_ddl_transaction!
  3. def change
  4. add_index :notifications, [:account_id, :id], order: { id: :desc }, algorithm: :concurrently
  5. remove_index :notifications, name: :index_notifications_on_id_and_account_id_and_activity_type
  6. end
  7. end