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#54'
	and p_type not like 'MEDIUM POLISHED%'
	and p_size in (11, 4, 47, 45, 13, 19, 38, 42)
	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=456360.92..456430.34 rows=27768 width=40) (actual time=52251.840..52258.999 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=183681 read=28767 written=16
   ->  GroupAggregate  (cost=446629.18..454311.48 rows=27768 width=40) (actual time=50937.193..51879.503 rows=27840 loops=1)
         Buffers: shared hit=183665 read=28767 written=16
         ->  Sort  (cost=446629.18..448110.10 rows=592370 width=40) (actual time=50937.106..51213.683 rows=1189963 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142118kB
               Buffers: shared hit=183665 read=28767 written=16
               ->  Hash Join  (cost=57950.63..389832.33 rows=592370 width=40) (actual time=3367.848..18879.318 rows=1189963 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=183665 read=28767 written=16
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=3.644..8453.851 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=156103 read=14912 written=16
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.058..3.560 rows=56 loops=1)
                                   Buffers: shared hit=57
                     ->  Hash  (cost=54239.84..54239.84 rows=296185 width=40) (actual time=3363.869..3363.869 rows=297659 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21532kB
                           Buffers: shared hit=27562 read=13855
                           ->  Bitmap Heap Scan on part  (cost=5732.01..54239.84 rows=296185 width=40) (actual time=259.883..3117.592 rows=297659 loops=1)
                                 Recheck Cond: (p_size = ANY ('{11,4,47,45,13,19,38,42}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#54'::bpchar) AND ((p_type)::text !~~ 'MEDIUM POLISHED%'::text))
                                 Rows Removed by Filter: 22678
                                 Buffers: shared hit=27562 read=13855
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5657.97 rows=319433 width=0) (actual time=243.698..243.698 rows=320337 loops=1)
                                       Index Cond: (p_size = ANY ('{11,4,47,45,13,19,38,42}'::integer[]))
                                       Buffers: shared hit=164 read=737
 Total runtime: 52274.801 ms
(32 rows)

COMMIT;
COMMIT