Filtering by window function result in Postgresql

Question

Ok, initially this was just a joke we had with a friend of mine, but it turned into interesting technical question :)

I have the following stuff table:

Answer 1

I haven't worked with PostgreSQL. However, my best guess would be using an inline view.

SELECT a.*
FROM (
    SELECT s.*, sum(volume) OVER previous_rows AS total
    FROM stuff AS s
    WINDOW previous_rows AS (
         ORDER BY priority desc
         ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
    )
    ORDER BY priority DESC
) AS a
WHERE a.total < 1000;