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#35'
	and p_type not like 'STANDARD POLISHED%'
	and p_size in (50, 17, 44, 46, 28, 20, 40, 1)
	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=416201.64..416270.93 rows=27717 width=40) (actual time=10447.503..10451.091 rows=27839 loops=1)
   Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size
   Sort Method: quicksort  Memory: 2967kB
   Buffers: shared hit=17642 read=194796 written=463
   ->  GroupAggregate  (cost=406488.07..414156.34 rows=27717 width=40) (actual time=9653.997..10392.909 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=17628 read=194796 written=463
         ->  Sort  (cost=406488.07..407966.29 rows=591288 width=40) (actual time=9653.925..9825.525 rows=1186630 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141858kB
               Buffers: shared hit=17628 read=194796 written=463
               ->  Hash Join  (cost=57931.88..349802.76 rows=591288 width=40) (actual time=933.712..6505.003 rows=1186630 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=17628 read=194796 written=463
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.402..4068.407 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=10048 read=160966 written=346
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.046..0.360 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54220.10..54220.10 rows=295644 width=40) (actual time=930.428..930.428 rows=296813 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25557kB
                           Buffers: shared hit=7580 read=33830 written=117
                           ->  Bitmap Heap Scan on part  (cost=5728.28..54220.10 rows=295644 width=40) (actual time=77.154..801.194 rows=296813 loops=1)
                                 Recheck Cond: (p_size = ANY ('{50,17,44,46,28,20,40,1}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#35'::bpchar) AND ((p_type)::text !~~ 'STANDARD POLISHED%'::text))
                                 Rows Removed by Filter: 23049
                                 Heap Blocks: exact=40512
                                 Buffers: shared hit=7580 read=33830 written=117
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5654.37 rows=318793 width=0) (actual time=67.325..67.325 rows=319862 loops=1)
                                       Index Cond: (p_size = ANY ('{50,17,44,46,28,20,40,1}'::integer[]))
                                       Buffers: shared hit=7 read=891
 Planning time: 4.134 ms
 Execution time: 10471.463 ms
(35 rows)

COMMIT;
COMMIT