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#35'
	and p_container = 'MED CAN'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=357492.56..357492.57 rows=1 width=4) (actual time=593.930..593.931 rows=1 loops=1)
   Buffers: shared hit=63647 read=21679 dirtied=110
   ->  Nested Loop  (cost=130.19..357442.17 rows=20156 width=4) (actual time=0.547..592.996 rows=5604 loops=1)
         Buffers: shared hit=63647 read=21679 dirtied=110
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7945.36 rows=2012 width=4) (actual time=0.102..30.369 rows=2017 loops=1)
               Index Cond: ((p_container = 'MED CAN'::bpchar) AND (p_brand = 'Brand#35'::bpchar))
               Heap Fetches: 2017
               Buffers: shared read=1991
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.61 rows=10 width=12) (actual time=0.004..0.006 rows=3 loops=2017)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13718
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.270..0.270 rows=1 loops=2017)
                       Buffers: shared hit=49929 read=19688 dirtied=110
                       ->  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=0.033..0.263 rows=30 loops=2017)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61242
                             Buffers: shared hit=49929 read=19688 dirtied=110
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.270..0.270 rows=1 loops=2017)
                       Buffers: shared hit=49929 read=19688 dirtied=110
                       ->  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=0.033..0.263 rows=30 loops=2017)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61242
                             Buffers: shared hit=49929 read=19688 dirtied=110
 Planning time: 3.018 ms
 Execution time: 594.096 ms
(27 rows)

COMMIT;
COMMIT