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#11'
	and p_type not like 'STANDARD BURNISHED%'
	and p_size in (31, 21, 5, 28, 50, 47, 23, 19)
	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=416663.90..416733.56 rows=27863 width=40) (actual time=10847.913..10855.961 rows=27840 loops=1)
   Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size
   Sort Method: quicksort  Memory: 2944kB
   Buffers: shared hit=121094 read=91346 written=29
   ->  GroupAggregate  (cost=406898.19..414606.77 rows=27863 width=40) (actual time=9648.556..10751.594 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=121080 read=91346 written=29
         ->  Sort  (cost=406898.19..408384.18 rows=594396 width=40) (actual time=9648.492..9931.922 rows=1186325 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141834kB
               Buffers: shared hit=121080 read=91346 written=29
               ->  Hash Join  (cost=57990.48..349892.44 rows=594396 width=40) (actual time=1044.173..6358.466 rows=1186325 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=121080 read=91346 written=29
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.445..3717.199 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=117099 read=53915 written=2
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.046..0.401 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54259.28..54259.28 rows=297198 width=40) (actual time=1040.379..1040.379 rows=296755 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25539kB
                           Buffers: shared hit=3981 read=37431 written=27
                           ->  Bitmap Heap Scan on part  (cost=5737.61..54259.28 rows=297198 width=40) (actual time=92.085..905.181 rows=296755 loops=1)
                                 Recheck Cond: (p_size = ANY ('{31,21,5,28,50,47,23,19}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#11'::bpchar) AND ((p_type)::text !~~ 'STANDARD BURNISHED%'::text))
                                 Rows Removed by Filter: 22926
                                 Heap Blocks: exact=40513
                                 Buffers: shared hit=3981 read=37431 written=27
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5663.31 rows=319987 width=0) (actual time=80.870..80.870 rows=319681 loops=1)
                                       Index Cond: (p_size = ANY ('{31,21,5,28,50,47,23,19}'::integer[]))
                                       Buffers: shared hit=7 read=892
 Planning time: 4.355 ms
 Execution time: 10889.588 ms
(35 rows)

COMMIT;
COMMIT