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#24'
	and p_container = 'JUMBO CAN'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                         QUERY PLAN                                                                                          
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=411903.62..411903.64 rows=1 width=4) (actual time=1632.399..1632.399 rows=1 loops=1)
   Buffers: shared hit=47410 read=35275 dirtied=83 written=648
   ->  Nested Loop  (cost=140.78..411852.10 rows=20608 width=4) (actual time=3.098..1630.477 rows=5210 loops=1)
         Buffers: shared hit=47410 read=35275 dirtied=83 written=648
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.00..8095.19 rows=2051 width=4) (actual time=0.378..58.762 rows=1975 loops=1)
               Index Cond: ((p_container = 'JUMBO CAN'::bpchar) AND (p_brand = 'Brand#24'::bpchar))
               Heap Fetches: 1975
               Buffers: shared read=1954 written=29
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=140.78..196.76 rows=10 width=12) (actual time=0.018..0.023 rows=3 loops=1975)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13159
               SubPlan 1
                 ->  Aggregate  (cost=140.77..140.78 rows=1 width=4) (actual time=0.766..0.766 rows=1 loops=1975)
                       Buffers: shared hit=34251 read=33321 dirtied=83 written=619
                       ->  Index Only Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=0.00..140.69 rows=31 width=4) (actual time=0.072..0.747 rows=30 loops=1975)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59350
                             Buffers: shared hit=34251 read=33321 dirtied=83 written=619
               SubPlan 1
                 ->  Aggregate  (cost=140.77..140.78 rows=1 width=4) (actual time=0.766..0.766 rows=1 loops=1975)
                       Buffers: shared hit=34251 read=33321 dirtied=83 written=619
                       ->  Index Only Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=0.00..140.69 rows=31 width=4) (actual time=0.072..0.747 rows=30 loops=1975)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59350
                             Buffers: shared hit=34251 read=33321 dirtied=83 written=619
 Total runtime: 1632.691 ms
(26 rows)

COMMIT;
COMMIT