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 JAR'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                         QUERY PLAN                                                                                          
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=409701.55..409701.56 rows=1 width=4) (actual time=4783.778..4783.779 rows=1 loops=1)
   Buffers: shared hit=50816 read=32723 dirtied=59
   ->  Nested Loop  (cost=140.78..409650.41 rows=20456 width=4) (actual time=5.887..4780.560 rows=5357 loops=1)
         Buffers: shared hit=50816 read=32723 dirtied=59
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.00..8051.27 rows=2040 width=4) (actual time=3.666..198.778 rows=1989 loops=1)
               Index Cond: ((p_container = 'WRAP JAR'::bpchar) AND (p_brand = 'Brand#43'::bpchar))
               Heap Fetches: 1989
               Buffers: shared hit=62 read=1883
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=140.78..196.76 rows=10 width=12) (actual time=0.119..0.165 rows=3 loops=1989)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13358
               SubPlan 1
                 ->  Aggregate  (cost=140.77..140.78 rows=1 width=4) (actual time=2.125..2.125 rows=1 loops=1989)
                       Buffers: shared hit=37396 read=30840 dirtied=59
                       ->  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=0.255..2.101 rows=30 loops=1989)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59975
                             Buffers: shared hit=37396 read=30840 dirtied=59
               SubPlan 1
                 ->  Aggregate  (cost=140.77..140.78 rows=1 width=4) (actual time=2.125..2.125 rows=1 loops=1989)
                       Buffers: shared hit=37396 read=30840 dirtied=59
                       ->  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=0.255..2.101 rows=30 loops=1989)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59975
                             Buffers: shared hit=37396 read=30840 dirtied=59
 Total runtime: 4784.027 ms
(26 rows)

COMMIT;
COMMIT