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 BRUSHED%'
	and p_size in (21, 28, 4, 31, 19, 46, 40, 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=416373.11..416442.54 rows=27773 width=40) (actual time=11995.905..12000.035 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=75251 read=137190
   ->  GroupAggregate  (cost=406639.56..414323.27 rows=27773 width=40) (actual time=11003.236..11938.910 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=75237 read=137190
         ->  Sort  (cost=406639.56..408120.76 rows=592478 width=40) (actual time=11003.142..11298.594 rows=1185887 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141800kB
               Buffers: shared hit=75237 read=137190
               ->  Hash Join  (cost=57948.80..349831.58 rows=592478 width=40) (actual time=954.932..6619.959 rows=1185887 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=75237 read=137190
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.460..3854.832 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=66027 read=104987
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.043..0.417 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54229.59..54229.59 rows=296239 width=40) (actual time=950.720..950.720 rows=296636 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25554kB
                           Buffers: shared hit=9210 read=32203
                           ->  Bitmap Heap Scan on part  (cost=5730.59..54229.59 rows=296239 width=40) (actual time=82.748..815.347 rows=296636 loops=1)
                                 Recheck Cond: (p_size = ANY ('{21,28,4,31,19,46,40,26}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'STANDARD BRUSHED%'::text))
                                 Rows Removed by Filter: 22821
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=9210 read=32203
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5656.53 rows=319080 width=0) (actual time=72.273..72.273 rows=319457 loops=1)
                                       Index Cond: (p_size = ANY ('{21,28,4,31,19,46,40,26}'::integer[]))
                                       Buffers: shared hit=118 read=779
 Planning time: 4.171 ms
 Execution time: 12022.728 ms
(35 rows)

COMMIT;
COMMIT