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#44'
	and p_container = 'LG JAR'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=358727.72..358727.73 rows=1 width=4) (actual time=486.330..486.330 rows=1 loops=1)
   Buffers: shared hit=71604 read=10153 dirtied=3
   ->  Nested Loop  (cost=130.19..358677.21 rows=20205 width=4) (actual time=1.151..485.454 rows=5212 loops=1)
         Buffers: shared hit=71604 read=10153 dirtied=3
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7970.30 rows=2019 width=4) (actual time=0.297..28.357 rows=1950 loops=1)
               Index Cond: ((p_container = 'LG JAR'::bpchar) AND (p_brand = 'Brand#44'::bpchar))
               Heap Fetches: 1950
               Buffers: shared hit=8 read=1906
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.60 rows=10 width=12) (actual time=0.004..0.006 rows=3 loops=1950)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13054
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.226..0.226 rows=1 loops=1950)
                       Buffers: shared hit=58542 read=8247 dirtied=3
                       ->  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=0.028..0.219 rows=30 loops=1950)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 58659
                             Buffers: shared hit=58542 read=8247 dirtied=3
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.226..0.226 rows=1 loops=1950)
                       Buffers: shared hit=58542 read=8247 dirtied=3
                       ->  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=0.028..0.219 rows=30 loops=1950)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 58659
                             Buffers: shared hit=58542 read=8247 dirtied=3
 Planning time: 5.031 ms
 Execution time: 486.616 ms
(27 rows)

COMMIT;
COMMIT