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#42'
	and p_container = 'JUMBO JAR'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                         QUERY PLAN                                                                                          
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=407100.89..407100.91 rows=1 width=4) (actual time=4526.830..4526.830 rows=1 loops=1)
   Buffers: shared hit=44983 read=39331 dirtied=99 written=3148
   ->  Nested Loop  (cost=140.78..407049.90 rows=20396 width=4) (actual time=7.809..4523.591 rows=5380 loops=1)
         Buffers: shared hit=44983 read=39331 dirtied=99 written=3148
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.00..8003.03 rows=2027 width=4) (actual time=2.313..157.540 rows=2007 loops=1)
               Index Cond: ((p_container = 'JUMBO JAR'::bpchar) AND (p_brand = 'Brand#42'::bpchar))
               Heap Fetches: 2007
               Buffers: shared read=1985 written=152
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=140.78..196.77 rows=10 width=12) (actual time=0.098..0.135 rows=3 loops=2007)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13476
               SubPlan 1
                 ->  Aggregate  (cost=140.77..140.78 rows=1 width=4) (actual time=2.028..2.029 rows=1 loops=2007)
                       Buffers: shared hit=31507 read=37346 dirtied=99 written=2996
                       ->  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=0.197..2.003 rows=30 loops=2007)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 60535
                             Buffers: shared hit=31507 read=37346 dirtied=99 written=2996
               SubPlan 1
                 ->  Aggregate  (cost=140.77..140.78 rows=1 width=4) (actual time=2.028..2.029 rows=1 loops=2007)
                       Buffers: shared hit=31507 read=37346 dirtied=99 written=2996
                       ->  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=0.197..2.003 rows=30 loops=2007)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 60535
                             Buffers: shared hit=31507 read=37346 dirtied=99 written=2996
 Total runtime: 4527.135 ms
(26 rows)

COMMIT;
COMMIT