BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	p_brand,
	p_type,
	p_size,
	count(distinct ps_suppkey) as supplier_cnt
from
	partsupp,
	part
where
	p_partkey = ps_partkey
	and p_brand <> 'Brand#21'
	and p_type not like 'ECONOMY ANODIZED%'
	and p_size in (28, 50, 20, 47, 8, 9, 44, 15)
	and ps_suppkey not in (
		select
			s_suppkey
		from
			supplier
		where
			s_comment like '%Customer%Complaints%'
	)
group by
	p_brand,
	p_type,
	p_size
order by
	supplier_cnt desc,
	p_brand,
	p_type,
	p_size;
                                                                                QUERY PLAN                                                                                
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=416097.29..416166.51 rows=27686 width=40) (actual time=12960.836..12964.862 rows=27840 loops=1)
   Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size
   Sort Method: quicksort  Memory: 2968kB
   Buffers: shared hit=193752 read=18691
   ->  GroupAggregate  (cost=406394.89..414054.50 rows=27686 width=40) (actual time=12080.684..12903.614 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=193738 read=18691
         ->  Sort  (cost=406394.89..407871.44 rows=590620 width=40) (actual time=12080.568..12287.565 rows=1185614 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141779kB
               Buffers: shared hit=193738 read=18691
               ->  Hash Join  (cost=57914.24..349778.44 rows=590620 width=40) (actual time=2150.986..8828.017 rows=1185614 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=193738 read=18691
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=1.405..4335.657 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=164318 read=6696
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.054..1.269 rows=56 loops=1)
                                   Buffers: shared hit=3 read=53
                     ->  Hash  (cost=54206.64..54206.64 rows=295310 width=40) (actual time=2146.761..2146.761 rows=296567 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25548kB
                           Buffers: shared hit=29420 read=11995
                           ->  Bitmap Heap Scan on part  (cost=5725.14..54206.64 rows=295310 width=40) (actual time=182.654..1934.525 rows=296567 loops=1)
                                 Recheck Cond: (p_size = ANY ('{28,50,20,47,8,9,44,15}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#21'::bpchar) AND ((p_type)::text !~~ 'ECONOMY ANODIZED%'::text))
                                 Rows Removed by Filter: 23062
                                 Heap Blocks: exact=40517
                                 Buffers: shared hit=29420 read=11995
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5651.31 rows=318380 width=0) (actual time=168.035..168.035 rows=319629 loops=1)
                                       Index Cond: (p_size = ANY ('{28,50,20,47,8,9,44,15}'::integer[]))
                                       Buffers: shared hit=10 read=888
 Planning time: 4.236 ms
 Execution time: 12979.848 ms
(35 rows)

COMMIT;
COMMIT