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#11'
	and p_container = 'JUMBO PKG'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=353950.79..353950.80 rows=1 width=4) (actual time=533.431..533.431 rows=1 loops=1)
   Buffers: shared hit=60235 read=20254 dirtied=100 written=70
   ->  Nested Loop  (cost=130.19..353900.85 rows=19975 width=4) (actual time=0.592..532.666 rows=5152 loops=1)
         Buffers: shared hit=60235 read=20254 dirtied=100 written=70
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7869.58 rows=1992 width=4) (actual time=0.115..27.694 rows=1907 loops=1)
               Index Cond: ((p_container = 'JUMBO PKG'::bpchar) AND (p_brand = 'Brand#11'::bpchar))
               Heap Fetches: 1907
               Buffers: shared read=1887 written=4
         ->  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=1907)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=12824
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.256..0.256 rows=1 loops=1907)
                       Buffers: shared hit=47411 read=18367 dirtied=100 written=66
                       ->  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..0.249 rows=30 loops=1907)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 57842
                             Buffers: shared hit=47411 read=18367 dirtied=100 written=66
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.256..0.256 rows=1 loops=1907)
                       Buffers: shared hit=47411 read=18367 dirtied=100 written=66
                       ->  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..0.249 rows=30 loops=1907)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 57842
                             Buffers: shared hit=47411 read=18367 dirtied=100 written=66
 Planning time: 4.531 ms
 Execution time: 533.558 ms
(27 rows)

COMMIT;
COMMIT