load 'auto_explain';
LOAD
set auto_explain.log_min_duration to 0;
SET
set auto_explain.log_analyze to on;
SET
set auto_explain.log_wal to on;
SET
set auto_explain.log_timing to on;
SET
set auto_explain.log_level to notice;
SET
BEGIN;
BEGIN
select
	sum(l_extendedprice) / 7.0 as avg_yearly
from
	lineitem,
	part
where
	p_partkey = l_partkey
	and p_brand = 'Brand#45'
	and p_container = 'SM DRUM'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
NOTICE:  duration: 354.438 ms  plan:
Query Text: select
	sum(l_extendedprice) / 7.0 as avg_yearly
from
	lineitem,
	part
where
	p_partkey = l_partkey
	and p_brand = 'Brand#45'
	and p_container = 'SM DRUM'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
Aggregate  (cost=111370.94..111370.95 rows=1 width=32) (actual time=354.420..354.423 rows=1 loops=1)
  ->  Nested Loop  (cost=10.17..111319.05 rows=20755 width=8) (actual time=0.374..352.781 rows=5207 loops=1)
        ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..89.87 rows=2072 width=4) (actual time=0.091..1.219 rows=1952 loops=1)
              Index Cond: ((p_container = 'SM DRUM'::bpchar) AND (p_brand = 'Brand#45'::bpchar))
              Heap Fetches: 0
        ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=9.74..53.58 rows=10 width=17) (actual time=0.047..0.076 rows=3 loops=1952)
              Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
              SubPlan 1
                ->  Aggregate  (cost=9.17..9.18 rows=1 width=32) (actual time=0.102..0.102 rows=1 loops=1952)
                      ->  Index Only Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem lineitem_1  (cost=0.56..9.09 rows=30 width=5) (actual time=0.035..0.080 rows=30 loops=1952)
                            Index Cond: (l_partkey = part.p_partkey)
                            Heap Fetches: 236
      avg_yearly      
----------------------
 3059178.897142857143
(1 row)

COMMIT;
COMMIT