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#24'
	and p_type not like 'STANDARD ANODIZED%'
	and p_size in (18, 44, 5, 11, 24, 22, 21, 49)
	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=416905.93..416975.74 rows=27926 width=40) (actual time=9671.982..9675.029 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=152224 read=60214 written=2
   ->  GroupAggregate  (cost=407117.73..414843.69 rows=27926 width=40) (actual time=8874.926..9616.722 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=152210 read=60214 written=2
         ->  Sort  (cost=407117.73..408607.07 rows=595736 width=40) (actual time=8874.841..9043.196 rows=1186703 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141864kB
               Buffers: shared hit=152210 read=60214 written=2
               ->  Hash Join  (cost=58058.44..349973.80 rows=595736 width=40) (actual time=945.252..6034.533 rows=1186703 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=152210 read=60214 written=2
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.457..3585.503 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=139091 read=31923 written=2
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.049..0.408 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54318.86..54318.86 rows=297868 width=40) (actual time=942.336..942.336 rows=296851 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25561kB
                           Buffers: shared hit=13119 read=28291
                           ->  Bitmap Heap Scan on part  (cost=5773.03..54318.86 rows=297868 width=40) (actual time=86.719..816.957 rows=296851 loops=1)
                                 Recheck Cond: (p_size = ANY ('{18,44,5,11,24,22,21,49}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#24'::bpchar) AND ((p_type)::text !~~ 'STANDARD ANODIZED%'::text))
                                 Rows Removed by Filter: 22914
                                 Heap Blocks: exact=40511
                                 Buffers: shared hit=13119 read=28291
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5698.57 rows=320953 width=0) (actual time=76.017..76.017 rows=319765 loops=1)
                                       Index Cond: (p_size = ANY ('{18,44,5,11,24,22,21,49}'::integer[]))
                                       Buffers: shared hit=9 read=890
 Planning time: 4.833 ms
 Execution time: 9693.086 ms
(35 rows)

COMMIT;
COMMIT