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#15'
	and p_type not like 'SMALL BURNISHED%'
	and p_size in (34, 12, 23, 49, 44, 9, 2, 30)
	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=416659.62..416729.26 rows=27858 width=40) (actual time=9960.131..9963.427 rows=27838 loops=1)
   Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size
   Sort Method: quicksort  Memory: 2967kB
   Buffers: shared hit=101670 read=110770 written=3625
   ->  GroupAggregate  (cost=406895.68..414602.89 rows=27858 width=40) (actual time=9188.079..9905.656 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=101656 read=110770 written=3625
         ->  Sort  (cost=406895.68..408381.41 rows=594290 width=40) (actual time=9187.999..9345.011 rows=1185451 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141766kB
               Buffers: shared hit=101656 read=110770 written=3625
               ->  Hash Join  (cost=57999.97..349900.87 rows=594290 width=40) (actual time=1035.381..6350.447 rows=1185451 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=101656 read=110770 written=3625
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.431..3647.717 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=101647 read=69367 written=3625
                           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..0.383 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54269.43..54269.43 rows=297145 width=40) (actual time=1031.670..1031.670 rows=296520 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25545kB
                           Buffers: shared hit=9 read=41403
                           ->  Bitmap Heap Scan on part  (cost=5739.93..54269.43 rows=297145 width=40) (actual time=88.104..885.032 rows=296520 loops=1)
                                 Recheck Cond: (p_size = ANY ('{34,12,23,49,44,9,2,30}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#15'::bpchar) AND ((p_type)::text !~~ 'SMALL BURNISHED%'::text))
                                 Rows Removed by Filter: 23021
                                 Heap Blocks: exact=40515
                                 Buffers: shared hit=9 read=41403
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5665.65 rows=320300 width=0) (actual time=77.060..77.060 rows=319541 loops=1)
                                       Index Cond: (p_size = ANY ('{34,12,23,49,44,9,2,30}'::integer[]))
                                       Buffers: shared hit=7 read=890
 Planning time: 4.286 ms
 Execution time: 9980.228 ms
(35 rows)

COMMIT;
COMMIT