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#25'
	and p_type not like 'MEDIUM BURNISHED%'
	and p_size in (8, 25, 14, 22, 27, 50, 37, 34)
	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=416574.96..416644.55 rows=27834 width=40) (actual time=10890.113..10893.783 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=116996 read=95446 written=1019
   ->  GroupAggregate  (cost=406819.59..414520.18 rows=27834 width=40) (actual time=10059.303..10833.827 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=116982 read=95446 written=1019
         ->  Sort  (cost=406819.59..408304.04 rows=593780 width=40) (actual time=10059.226..10245.429 rows=1186133 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141819kB
               Buffers: shared hit=116982 read=95446 written=1019
               ->  Hash Join  (cost=57981.57..349877.37 rows=593780 width=40) (actual time=749.261..6885.937 rows=1186133 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=116982 read=95446 written=1019
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.600..4364.190 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=76344 read=94670 written=1019
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.034..0.512 rows=56 loops=1)
                                   Buffers: shared hit=56
                     ->  Hash  (cost=54254.21..54254.21 rows=296890 width=40) (actual time=743.906..743.906 rows=296700 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25558kB
                           Buffers: shared hit=40638 read=776
                           ->  Bitmap Heap Scan on part  (cost=5736.39..54254.21 rows=296890 width=40) (actual time=122.313..602.495 rows=296700 loops=1)
                                 Recheck Cond: (p_size = ANY ('{8,25,14,22,27,50,37,34}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#25'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text))
                                 Rows Removed by Filter: 22741
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=40638 read=776
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5662.17 rows=319833 width=0) (actual time=107.803..107.803 rows=319441 loops=1)
                                       Index Cond: (p_size = ANY ('{8,25,14,22,27,50,37,34}'::integer[]))
                                       Buffers: shared hit=123 read=775
 Planning time: 5.347 ms
 Execution time: 10915.457 ms
(35 rows)

COMMIT;
COMMIT