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#55'
	and p_type not like 'SMALL ANODIZED%'
	and p_size in (27, 33, 20, 32, 49, 9, 5, 38)
	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=416644.22..416713.86 rows=27853 width=40) (actual time=10077.864..10080.895 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=167448 read=44992 written=625
   ->  GroupAggregate  (cost=406882.02..414587.90 rows=27853 width=40) (actual time=9312.563..10024.341 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=167434 read=44992 written=625
         ->  Sort  (cost=406882.02..408367.49 rows=594188 width=40) (actual time=9312.486..9468.752 rows=1187977 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141963kB
               Buffers: shared hit=167434 read=44992 written=625
               ->  Hash Join  (cost=57997.85..349897.73 rows=594188 width=40) (actual time=1481.657..6518.084 rows=1187977 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=167434 read=44992 written=625
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.474..3377.384 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=162965 read=8049 written=424
                           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..0.423 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54267.95..54267.95 rows=297094 width=40) (actual time=1051.033..1051.033 rows=297159 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25607kB
                           Buffers: shared hit=4469 read=36943 written=201
                           ->  Bitmap Heap Scan on part  (cost=5739.62..54267.95 rows=297094 width=40) (actual time=81.574..906.735 rows=297159 loops=1)
                                 Recheck Cond: (p_size = ANY ('{27,33,20,32,49,9,5,38}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'SMALL ANODIZED%'::text))
                                 Rows Removed by Filter: 23023
                                 Heap Blocks: exact=40514
                                 Buffers: shared hit=4469 read=36943 written=201
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5665.35 rows=320253 width=0) (actual time=71.417..71.417 rows=320182 loops=1)
                                       Index Cond: (p_size = ANY ('{27,33,20,32,49,9,5,38}'::integer[]))
                                       Buffers: shared hit=9 read=889
 Planning time: 4.253 ms
 Execution time: 10098.848 ms
(35 rows)

COMMIT;
COMMIT