View the original community article here
Last tested; Jul 6, 2017
This is not recommended - if you have static values, they should be a non-persisted derived table or written to your database.
That said, you can use sql_trigger_value: SELECT 1 ;;. This value will never change so the PDT will never be rebuilt unless the SQL is changed or someone requests a manual rebuild.
This content is subject to limited support.