mastodon/db/migrate/20180514140000_revert_index...

16 lines
897 B
Ruby

# frozen_string_literal: true
class RevertIndexChangeOnStatusesForApiV1AccountsAccountIdStatuses < ActiveRecord::Migration[5.1]
disable_ddl_transaction!
def change
safety_assured do
add_index :statuses, [:account_id, :id, :visibility, :updated_at], order: { id: :desc }, algorithm: :concurrently, name: :index_statuses_20180106 unless index_name_exists?(:statuses, "index_statuses_20180106")
end
# These index may not exists (see migration 20180514130000)
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)')
remove_index :statuses, column: [:account_id, :id], where: 'visibility = 3', algorithm: :concurrently if index_exists?(:statuses, ["account_id", "id"], where: "(visibility = 3)")
end
end