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 'PROMO BRUSHED%'
	and p_size in (40, 4, 41, 10, 38, 3, 14, 5)
	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=416834.65..416904.40 rows=27901 width=40) (actual time=10553.285..10562.341 rows=27838 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=5523 read=206918 written=144
   ->  GroupAggregate  (cost=407055.20..414774.44 rows=27901 width=40) (actual time=9775.226..10494.133 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=5509 read=206918 written=144
         ->  Sort  (cost=407055.20..408543.25 rows=595218 width=40) (actual time=9775.147..9938.419 rows=1188904 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142036kB
               Buffers: shared hit=5509 read=206918 written=144
               ->  Hash Join  (cost=58054.51..349964.69 rows=595218 width=40) (actual time=1005.440..6856.568 rows=1188904 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=5509 read=206918 written=144
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.422..4144.825 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=5495 read=165519 written=117
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.041..0.376 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54318.17..54318.17 rows=297609 width=40) (actual time=1001.498..1001.498 rows=297402 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25640kB
                           Buffers: shared hit=14 read=41399 written=27
                           ->  Bitmap Heap Scan on part  (cost=5772.85..54318.17 rows=297609 width=40) (actual time=76.730..864.439 rows=297402 loops=1)
                                 Recheck Cond: (p_size = ANY ('{40,4,41,10,38,3,14,5}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#35'::bpchar) AND ((p_type)::text !~~ 'PROMO BRUSHED%'::text))
                                 Rows Removed by Filter: 22978
                                 Heap Blocks: exact=40513
                                 Buffers: shared hit=14 read=41399 written=27
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5698.45 rows=320933 width=0) (actual time=67.297..67.297 rows=320380 loops=1)
                                       Index Cond: (p_size = ANY ('{40,4,41,10,38,3,14,5}'::integer[]))
                                       Buffers: shared hit=12 read=888 written=1
 Planning time: 4.324 ms
 Execution time: 10582.047 ms
(35 rows)

COMMIT;
COMMIT