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#35'
	and p_container = 'LG CAN'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=353593.57..353593.59 rows=1 width=4) (actual time=438.375..438.375 rows=1 loops=1)
   Buffers: shared hit=73146 read=10210 dirtied=1
   ->  Nested Loop  (cost=130.19..353543.79 rows=19915 width=4) (actual time=1.091..437.426 rows=5300 loops=1)
         Buffers: shared hit=73146 read=10210 dirtied=1
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7860.95 rows=1990 width=4) (actual time=0.177..25.459 rows=1994 loops=1)
               Index Cond: ((p_container = 'LG CAN'::bpchar) AND (p_brand = 'Brand#35'::bpchar))
               Heap Fetches: 1994
               Buffers: shared hit=10 read=1965
         ->  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=1994)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13314
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.198..0.198 rows=1 loops=1994)
                       Buffers: shared hit=59822 read=8245 dirtied=1
                       ->  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=0.026..0.190 rows=30 loops=1994)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59812
                             Buffers: shared hit=59822 read=8245 dirtied=1
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.198..0.198 rows=1 loops=1994)
                       Buffers: shared hit=59822 read=8245 dirtied=1
                       ->  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=0.026..0.190 rows=30 loops=1994)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59812
                             Buffers: shared hit=59822 read=8245 dirtied=1
 Planning time: 4.855 ms
 Execution time: 438.644 ms
(27 rows)

COMMIT;
COMMIT