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#24'
	and p_type not like 'PROMO BRUSHED%'
	and p_size in (20, 46, 25, 30, 44, 27, 31, 8)
	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=455780.00..455849.18 rows=27672 width=40) (actual time=50682.190..50685.302 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=20496 read=191942 written=18
   ->  GroupAggregate  (cost=446108.11..453738.34 rows=27672 width=40) (actual time=49363.387..50298.947 rows=27840 loops=1)
         Buffers: shared hit=20480 read=191942 written=18
         ->  Sort  (cost=446108.11..447578.81 rows=588281 width=40) (actual time=49363.252..49660.353 rows=1185553 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141774kB
               Buffers: shared hit=20480 read=191942 written=18
               ->  Hash Join  (cost=57891.90..389732.71 rows=588281 width=40) (actual time=2013.162..17324.561 rows=1185553 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=20480 read=191942 written=18
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.417..7814.522 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=17950 read=153065 written=18
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.124..1.289 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54193.87..54193.87 rows=295164 width=40) (actual time=2010.946..2010.946 rows=296549 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21482kB
                           Buffers: shared hit=2530 read=38877
                           ->  Bitmap Heap Scan on part  (cost=5721.20..54193.87 rows=295164 width=40) (actual time=147.022..1743.350 rows=296549 loops=1)
                                 Recheck Cond: (p_size = ANY ('{20,46,25,30,44,27,31,8}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#24'::bpchar) AND ((p_type)::text !~~ 'PROMO BRUSHED%'::text))
                                 Rows Removed by Filter: 22896
                                 Buffers: shared hit=2530 read=38877
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5647.41 rows=318027 width=0) (actual time=130.109..130.109 rows=319445 loops=1)
                                       Index Cond: (p_size = ANY ('{20,46,25,30,44,27,31,8}'::integer[]))
                                       Buffers: shared hit=10 read=887
 Total runtime: 50707.000 ms
(32 rows)

COMMIT;
COMMIT