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#43'
	and p_container = 'WRAP BOX'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=358553.51..358553.52 rows=1 width=4) (actual time=667.451..667.451 rows=1 loops=1)
   Buffers: shared hit=48714 read=36467 dirtied=241
   ->  Nested Loop  (cost=130.19..358502.82 rows=20276 width=4) (actual time=0.897..666.537 rows=5550 loops=1)
         Buffers: shared hit=48714 read=36467 dirtied=241
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7965.47 rows=2018 width=4) (actual time=0.109..14.343 rows=2022 loops=1)
               Index Cond: ((p_container = 'WRAP BOX'::bpchar) AND (p_brand = 'Brand#43'::bpchar))
               Heap Fetches: 2022
               Buffers: shared hit=1608 read=368
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.61 rows=10 width=12) (actual time=0.005..0.006 rows=3 loops=2022)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13674
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.313..0.313 rows=1 loops=2022)
                       Buffers: shared hit=33432 read=36099 dirtied=241
                       ->  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=0.032..0.305 rows=30 loops=2022)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61111
                             Buffers: shared hit=33432 read=36099 dirtied=241
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.313..0.313 rows=1 loops=2022)
                       Buffers: shared hit=33432 read=36099 dirtied=241
                       ->  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=0.032..0.305 rows=30 loops=2022)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61111
                             Buffers: shared hit=33432 read=36099 dirtied=241
 Planning time: 3.043 ms
 Execution time: 667.619 ms
(27 rows)

COMMIT;
COMMIT