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#44'
	and p_container = 'WRAP DRUM'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
NOTICE:  duration: 91.654 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#44'
	and p_container = 'WRAP DRUM'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
Aggregate  (cost=111204.62..111204.63 rows=1 width=32) (actual time=91.642..91.644 rows=1 loops=1)
  ->  Nested Loop  (cost=10.17..111152.85 rows=20705 width=8) (actual time=0.206..90.659 rows=5136 loops=1)
        ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..89.81 rows=2069 width=4) (actual time=0.050..0.656 rows=1925 loops=1)
              Index Cond: ((p_container = 'WRAP DRUM'::bpchar) AND (p_brand = 'Brand#44'::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=0.008..0.019 rows=3 loops=1925)
              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=0.026..0.026 rows=1 loops=1925)
                      ->  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=0.012..0.022 rows=30 loops=1925)
                            Index Cond: (l_partkey = part.p_partkey)
                            Heap Fetches: 77
      avg_yearly      
----------------------
 3015392.252857142857
(1 row)

COMMIT;
COMMIT