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#44'
	and p_type not like 'PROMO POLISHED%'
	and p_size in (6, 36, 43, 22, 44, 37, 20, 48)
	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=456535.08..456604.93 rows=27942 width=40) (actual time=44920.376..44922.241 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=158895 read=53552 written=231
   ->  GroupAggregate  (cost=446782.37..454471.54 rows=27942 width=40) (actual time=43681.002..44555.733 rows=27840 loops=1)
         Buffers: shared hit=158879 read=53552 written=231
         ->  Sort  (cost=446782.37..448264.32 rows=592780 width=40) (actual time=43680.878..43945.040 rows=1186128 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141819kB
               Buffers: shared hit=158879 read=53552 written=231
               ->  Hash Join  (cost=58057.45..389943.25 rows=592780 width=40) (actual time=999.670..12157.016 rows=1186128 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=158879 read=53552 written=231
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.194..4556.765 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=140609 read=30406 written=231
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.123..1.107 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54323.37..54323.37 rows=298048 width=40) (actual time=998.201..998.201 rows=296703 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21478kB
                           Buffers: shared hit=18270 read=23146
                           ->  Bitmap Heap Scan on part  (cost=5773.20..54323.37 rows=298048 width=40) (actual time=110.630..823.687 rows=296703 loops=1)
                                 Recheck Cond: (p_size = ANY ('{6,36,43,22,44,37,20,48}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#44'::bpchar) AND ((p_type)::text !~~ 'PROMO POLISHED%'::text))
                                 Rows Removed by Filter: 23479
                                 Buffers: shared hit=18270 read=23146
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5698.69 rows=321127 width=0) (actual time=97.376..97.376 rows=320182 loops=1)
                                       Index Cond: (p_size = ANY ('{6,36,43,22,44,37,20,48}'::integer[]))
                                       Buffers: shared hit=11 read=889
 Total runtime: 44943.433 ms
(32 rows)

COMMIT;
COMMIT