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#41'
	and p_type not like 'PROMO BURNISHED%'
	and p_size in (15, 30, 46, 23, 18, 4, 35, 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=416361.59..416431.02 rows=27770 width=40) (actual time=12730.016..12733.932 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=18277 read=194163 written=211
   ->  GroupAggregate  (cost=406629.22..414311.99 rows=27770 width=40) (actual time=11641.047..12673.507 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=18263 read=194163 written=211
         ->  Sort  (cost=406629.22..408110.23 rows=592406 width=40) (actual time=11640.946..11987.125 rows=1186727 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141866kB
               Buffers: shared hit=18263 read=194163 written=211
               ->  Hash Join  (cost=57946.60..349828.66 rows=592406 width=40) (actual time=1084.687..7711.905 rows=1186727 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=18263 read=194163 written=211
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.554..4756.510 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=15677 read=155337 written=178
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.051..0.499 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54227.83..54227.83 rows=296203 width=40) (actual time=1080.433..1080.433 rows=296849 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25566kB
                           Buffers: shared hit=2586 read=38826 written=33
                           ->  Bitmap Heap Scan on part  (cost=5730.16..54227.83 rows=296203 width=40) (actual time=88.027..942.068 rows=296849 loops=1)
                                 Recheck Cond: (p_size = ANY ('{15,30,46,23,18,4,35,1}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#41'::bpchar) AND ((p_type)::text !~~ 'PROMO BURNISHED%'::text))
                                 Rows Removed by Filter: 23000
                                 Heap Blocks: exact=40517
                                 Buffers: shared hit=2586 read=38826 written=33
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5656.11 rows=319027 width=0) (actual time=77.549..77.549 rows=319849 loops=1)
                                       Index Cond: (p_size = ANY ('{15,30,46,23,18,4,35,1}'::integer[]))
                                       Buffers: shared hit=7 read=888
 Planning time: 4.009 ms
 Execution time: 12755.371 ms
(35 rows)

COMMIT;
COMMIT