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#13'
	and p_container = 'LG CAN'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=354836.69..354836.70 rows=1 width=4) (actual time=892.826..892.826 rows=1 loops=1)
   Buffers: shared hit=57714 read=25440 dirtied=228 written=36
   ->  Nested Loop  (cost=130.19..354786.33 rows=20144 width=4) (actual time=0.851..891.366 rows=5303 loops=1)
         Buffers: shared hit=57714 read=25440 dirtied=228 written=36
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7884.99 rows=1997 width=4) (actual time=0.224..27.757 rows=1976 loops=1)
               Index Cond: ((p_container = 'LG CAN'::bpchar) AND (p_brand = 'Brand#13'::bpchar))
               Heap Fetches: 1976
               Buffers: shared hit=1097 read=841
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.61 rows=10 width=12) (actual time=0.008..0.011 rows=3 loops=1976)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13252
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.420..0.420 rows=1 loops=1976)
                       Buffers: shared hit=43365 read=24599 dirtied=228 written=36
                       ->  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=0.044..0.407 rows=30 loops=1976)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59741
                             Buffers: shared hit=43365 read=24599 dirtied=228 written=36
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.420..0.420 rows=1 loops=1976)
                       Buffers: shared hit=43365 read=24599 dirtied=228 written=36
                       ->  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=0.044..0.407 rows=30 loops=1976)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59741
                             Buffers: shared hit=43365 read=24599 dirtied=228 written=36
 Planning time: 4.009 ms
 Execution time: 893.058 ms
(27 rows)

COMMIT;
COMMIT