cat aescling's git repositories - mastodon.git/blob

   1 # frozen_string_literal: true
   2
   3 class RevertIndexChangeOnStatusesForApiV1AccountsAccountIdStatuses < ActiveRecord::Migration[5.1]
   4   disable_ddl_transaction!
   5
   6   def change
   7     safety_assured do
   8       add_index :statuses, [:account_id, :id, :visibility, :updated_at], order: { id: :desc }, algorithm: :concurrently, name: :index_statuses_20180106 unless index_exists?(:statuses, name: "index_statuses_20180106")
   9     end
  10
  11     # These index may not exists (see migration 20180514130000)
  12     remove_index :statuses, column: [:account_id, :id, :visibility], where: 'visibility IN (0, 1, 2)', algorithm: :concurrently if index_exists?(:statuses, [:account_id, :id, :visibility], where: 'visibility IN (0, 1, 2)')
  13     remove_index :statuses, column: [:account_id, :id], where: 'visibility = 3', algorithm: :concurrently if index_exists?(:statuses, ["account_id", "id"], where: "(visibility = 3)")
  14   end
  15 end