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#25'
	and p_container = 'JUMBO PACK'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=355011.79..355011.80 rows=1 width=4) (actual time=699.849..699.849 rows=1 loops=1)
   Buffers: shared hit=57887 read=25527 dirtied=148
   ->  Nested Loop  (cost=130.19..354961.55 rows=20095 width=4) (actual time=0.935..698.972 rows=5435 loops=1)
         Buffers: shared hit=57887 read=25527 dirtied=148
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..7889.89 rows=1998 width=4) (actual time=0.152..31.235 rows=1989 loops=1)
               Index Cond: ((p_container = 'JUMBO PACK'::bpchar) AND (p_brand = 'Brand#25'::bpchar))
               Heap Fetches: 1989
               Buffers: shared hit=278 read=1687
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.61 rows=10 width=12) (actual time=0.005..0.006 rows=3 loops=1989)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13437
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.326..0.326 rows=1 loops=1989)
                       Buffers: shared hit=44172 read=23840 dirtied=148
                       ->  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=0.036..0.318 rows=30 loops=1989)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59766
                             Buffers: shared hit=44172 read=23840 dirtied=148
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.326..0.326 rows=1 loops=1989)
                       Buffers: shared hit=44172 read=23840 dirtied=148
                       ->  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=0.036..0.318 rows=30 loops=1989)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 59766
                             Buffers: shared hit=44172 read=23840 dirtied=148
 Planning time: 3.409 ms
 Execution time: 700.026 ms
(27 rows)

COMMIT;
COMMIT