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#54'
	and p_type not like 'MEDIUM BURNISHED%'
	and p_size in (33, 50, 7, 21, 20, 28, 29, 23)
	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=416524.21..416593.76 rows=27819 width=40) (actual time=9558.668..9560.444 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=84 read=212358
   ->  GroupAggregate  (cost=406774.23..414470.65 rows=27819 width=40) (actual time=8759.580..9510.828 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=70 read=212358
         ->  Sort  (cost=406774.23..408257.88 rows=593458 width=40) (actual time=8759.487..8965.270 rows=1187376 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141916kB
               Buffers: shared hit=70 read=212358
               ->  Hash Join  (cost=57972.63..349865.21 rows=593458 width=40) (actual time=995.121..6230.314 rows=1187376 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=70 read=212358
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=1.193..3738.468 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=57 read=170957
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.067..1.096 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54247.29..54247.29 rows=296729 width=40) (actual time=989.338..989.338 rows=297005 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25580kB
                           Buffers: shared hit=13 read=41401
                           ->  Bitmap Heap Scan on part  (cost=5734.79..54247.29 rows=296729 width=40) (actual time=73.833..856.882 rows=297005 loops=1)
                                 Recheck Cond: (p_size = ANY ('{33,50,7,21,20,28,29,23}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#54'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text))
                                 Rows Removed by Filter: 23083
                                 Heap Blocks: exact=40515
                                 Buffers: shared hit=13 read=41401
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5660.61 rows=319620 width=0) (actual time=64.157..64.157 rows=320088 loops=1)
                                       Index Cond: (p_size = ANY ('{33,50,7,21,20,28,29,23}'::integer[]))
                                       Buffers: shared hit=11 read=888
 Planning time: 7.014 ms
 Execution time: 9579.561 ms
(35 rows)

COMMIT;
COMMIT