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mastodon/db/migrate/20190820003045_update_statu...

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class UpdateStatusesIndex < ActiveRecord::Migration[5.2]
disable_ddl_transaction!
def up
safety_assured { add_index :statuses, [:account_id, :id, :visibility, :updated_at], where: 'deleted_at IS NULL', order: { id: :desc }, algorithm: :concurrently, name: :index_statuses_20190820 }
remove_index :statuses, name: :index_statuses_20180106
end
def down
safety_assured { add_index :statuses, [:account_id, :id, :visibility, :updated_at], order: { id: :desc }, algorithm: :concurrently, name: :index_statuses_20180106 }
remove_index :statuses, name: :index_statuses_20190820
end
end