START TRANSACTION;
auto commit mode: off
select
	sum(l_extendedprice) / 7.0 as avg_yearly
from
	lineitem,
	part
where
	p_partkey = l_partkey
	and p_brand = 'Brand#24'
	and p_container = 'SM JAR'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
+-------------------------------------------+
| avg_yearly                                |
+===========================================+
|                                      null |
+-------------------------------------------+
1 tuple
COMMIT;
auto commit mode: on