BEGIN;
BEGIN
select
	sum(l_extendedprice) / 7.0 as avg_yearly
from
	lineitem,
	part
where
	p_partkey = l_partkey
	and p_brand = 'Brand#21'
	and p_container = 'LG JAR'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
    avg_yearly    
------------------
 2997207.14285714
(1 row)

COMMIT;
COMMIT