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#54'
	and p_container = 'WRAP CASE'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=358905.96..358905.97 rows=1 width=4) (actual time=796.627..796.627 rows=1 loops=1)
   Buffers: shared hit=52003 read=33048 dirtied=51
   ->  Nested Loop  (cost=130.19..358855.32 rows=20256 width=4) (actual time=0.951..795.594 rows=5480 loops=1)
         Buffers: shared hit=52003 read=33048 dirtied=51
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7974.32 rows=2020 width=4) (actual time=0.208..36.504 rows=2023 loops=1)
               Index Cond: ((p_container = 'WRAP CASE'::bpchar) AND (p_brand = 'Brand#54'::bpchar))
               Heap Fetches: 2023
               Buffers: shared hit=17 read=1981
         ->  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=2023)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13620
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.364..0.364 rows=1 loops=2023)
                       Buffers: shared hit=38366 read=31067 dirtied=51
                       ->  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=0.039..0.355 rows=30 loops=2023)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61008
                             Buffers: shared hit=38366 read=31067 dirtied=51
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.364..0.364 rows=1 loops=2023)
                       Buffers: shared hit=38366 read=31067 dirtied=51
                       ->  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=0.039..0.355 rows=30 loops=2023)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61008
                             Buffers: shared hit=38366 read=31067 dirtied=51
 Planning time: 3.329 ms
 Execution time: 796.840 ms
(27 rows)

COMMIT;
COMMIT