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#14'
	and p_type not like 'STANDARD BRUSHED%'
	and p_size in (40, 42, 25, 29, 14, 5, 31, 7)
	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=417042.55..417112.46 rows=27964 width=40) (actual time=10617.744..10619.891 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=5624 read=206818 written=10
   ->  GroupAggregate  (cost=407240.66..414977.23 rows=27964 width=40) (actual time=9730.688..10563.490 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=5610 read=206818 written=10
         ->  Sort  (cost=407240.66..408732.05 rows=596554 width=40) (actual time=9730.603..9966.957 rows=1185796 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141793kB
               Buffers: shared hit=5610 read=206818 written=10
               ->  Hash Join  (cost=58088.82..350012.36 rows=596554 width=40) (actual time=991.037..6546.058 rows=1185796 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=5610 read=206818 written=10
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.383..4109.891 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=5351 read=165663 written=10
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.042..0.332 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54344.13..54344.13 rows=298277 width=40) (actual time=986.652..986.652 rows=296622 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25552kB
                           Buffers: shared hit=259 read=41155
                           ->  Bitmap Heap Scan on part  (cost=5778.96..54344.13 rows=298277 width=40) (actual time=71.350..856.209 rows=296622 loops=1)
                                 Recheck Cond: (p_size = ANY ('{40,42,25,29,14,5,31,7}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#14'::bpchar) AND ((p_type)::text !~~ 'STANDARD BRUSHED%'::text))
                                 Rows Removed by Filter: 23006
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=259 read=41155
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5704.39 rows=321727 width=0) (actual time=62.332..62.332 rows=319628 loops=1)
                                       Index Cond: (p_size = ANY ('{40,42,25,29,14,5,31,7}'::integer[]))
                                       Buffers: shared hit=8 read=890
 Planning time: 4.221 ms
 Execution time: 10646.383 ms
(35 rows)

COMMIT;
COMMIT