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#12'
	and p_container = 'MED JAR'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=363865.24..363865.25 rows=1 width=4) (actual time=1063.230..1063.230 rows=1 loops=1)
   Buffers: shared hit=55431 read=28423 dirtied=30
   ->  Nested Loop  (cost=130.19..363813.84 rows=20557 width=4) (actual time=1.288..1061.732 rows=5359 loops=1)
         Buffers: shared hit=55431 read=28423 dirtied=30
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..8081.93 rows=2048 width=4) (actual time=0.276..23.718 rows=2002 loops=1)
               Index Cond: ((p_container = 'MED JAR'::bpchar) AND (p_brand = 'Brand#12'::bpchar))
               Heap Fetches: 2002
               Buffers: shared hit=1630 read=343
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.60 rows=10 width=12) (actual time=0.008..0.010 rows=3 loops=2002)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13415
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.503..0.503 rows=1 loops=2002)
                       Buffers: shared hit=40386 read=28080 dirtied=30
                       ->  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=0.054..0.487 rows=30 loops=2002)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 60172
                             Buffers: shared hit=40386 read=28080 dirtied=30
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.503..0.503 rows=1 loops=2002)
                       Buffers: shared hit=40386 read=28080 dirtied=30
                       ->  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=0.054..0.487 rows=30 loops=2002)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 60172
                             Buffers: shared hit=40386 read=28080 dirtied=30
 Planning time: 6.674 ms
 Execution time: 1063.551 ms
(27 rows)

COMMIT;
COMMIT