-- Benchmark Query 14 derived from TPC-H query 14 under the terms of the TPC Fair Use Policy.
-- TPC-H queries are Copyright 1993-2022 Transaction Processing Performance Council.
select
	100.00 * sum(case
		when p_type like 'PROMO%'
			then l_extendedprice * (1 - l_discount)
		else 0
	end) / sum(l_extendedprice * (1 - l_discount)) as promo_revenue
from
	lineitem,
	part
where
	l_partkey = p_partkey
	and l_shipdate >= date '1995-02-01'
	and l_shipdate < date '1995-02-01' + interval '1' month;
