BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	sum(l_extendedprice) / 7.0 as avg_yearly
from
	lineitem,
	part
where
	p_partkey = l_partkey
	and p_brand = 'Brand#15'
	and p_container = 'MED CASE'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=360861.02..360861.03 rows=1 width=4) (actual time=729.957..729.957 rows=1 loops=1)
   Buffers: shared hit=57675 read=23955 dirtied=109 written=63
   ->  Nested Loop  (cost=130.19..360810.00 rows=20407 width=4) (actual time=0.864..728.997 rows=5228 loops=1)
         Buffers: shared hit=57675 read=23955 dirtied=109 written=63
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..8017.62 rows=2031 width=4) (actual time=0.148..35.042 rows=1948 loops=1)
               Index Cond: ((p_container = 'MED CASE'::bpchar) AND (p_brand = 'Brand#15'::bpchar))
               Heap Fetches: 1948
               Buffers: shared hit=63 read=1853 written=5
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.60 rows=10 width=12) (actual time=0.006..0.007 rows=3 loops=1948)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13070
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.346..0.346 rows=1 loops=1948)
                       Buffers: shared hit=44542 read=22102 dirtied=109 written=58
                       ->  Index Only Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem lineitem_1  (cost=0.56..129.11 rows=31 width=4) (actual time=0.036..0.337 rows=30 loops=1948)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 58556
                             Buffers: shared hit=44542 read=22102 dirtied=109 written=58
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.346..0.346 rows=1 loops=1948)
                       Buffers: shared hit=44542 read=22102 dirtied=109 written=58
                       ->  Index Only Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem lineitem_1  (cost=0.56..129.11 rows=31 width=4) (actual time=0.036..0.337 rows=30 loops=1948)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 58556
                             Buffers: shared hit=44542 read=22102 dirtied=109 written=58
 Planning time: 3.407 ms
 Execution time: 730.170 ms
(27 rows)

COMMIT;
COMMIT