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 'STANDARD BURNISHED%'
	and p_size in (17, 21, 1, 43, 12, 30, 23, 26)
	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=416090.58..416159.79 rows=27686 width=40) (actual time=10185.625..10188.850 rows=27838 loops=1)
   Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size
   Sort Method: quicksort  Memory: 2943kB
   Buffers: shared hit=155935 read=56505 written=15
   ->  GroupAggregate  (cost=406388.05..414047.78 rows=27686 width=40) (actual time=9375.089..10132.513 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=155921 read=56505 written=15
         ->  Sort  (cost=406388.05..407864.62 rows=590630 width=40) (actual time=9374.999..9564.286 rows=1185281 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141753kB
               Buffers: shared hit=155921 read=56505 written=15
               ->  Hash Join  (cost=57906.27..349770.57 rows=590630 width=40) (actual time=1102.732..6323.772 rows=1185281 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=155921 read=56505 written=15
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.448..3347.127 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=155886 read=15128 written=3
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.047..0.399 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54198.60..54198.60 rows=295315 width=40) (actual time=1099.474..1099.474 rows=296474 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25518kB
                           Buffers: shared hit=35 read=41377 written=12
                           ->  Bitmap Heap Scan on part  (cost=5723.28..54198.60 rows=295315 width=40) (actual time=92.226..937.589 rows=296474 loops=1)
                                 Recheck Cond: (p_size = ANY ('{17,21,1,43,12,30,23,26}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'STANDARD BURNISHED%'::text))
                                 Rows Removed by Filter: 23153
                                 Heap Blocks: exact=40515
                                 Buffers: shared hit=35 read=41377 written=12
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5649.45 rows=318133 width=0) (actual time=77.147..77.147 rows=319627 loops=1)
                                       Index Cond: (p_size = ANY ('{17,21,1,43,12,30,23,26}'::integer[]))
                                       Buffers: shared hit=7 read=890
 Planning time: 4.653 ms
 Execution time: 10205.369 ms
(35 rows)

COMMIT;
COMMIT