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#32'
	and p_type not like 'LARGE ANODIZED%'
	and p_size in (46, 7, 34, 15, 41, 28, 10, 50)
	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=457063.80..457133.75 rows=27977 width=40) (actual time=45424.420..45427.320 rows=27838 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=209473 read=2978
   ->  GroupAggregate  (cost=447257.29..454997.43 rows=27977 width=40) (actual time=44110.859..45046.144 rows=27838 loops=1)
         Buffers: shared hit=209457 read=2978
         ->  Sort  (cost=447257.29..448749.36 rows=596830 width=40) (actual time=44110.754..44406.218 rows=1186747 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141867kB
               Buffers: shared hit=209457 read=2978
               ->  Hash Join  (cost=58074.22..390000.52 rows=596830 width=40) (actual time=1117.164..13249.234 rows=1186747 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=209457 read=2978
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.164..4910.402 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=170622 read=393
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.053..1.083 rows=56 loops=1)
                                   Buffers: shared hit=57
                     ->  Hash  (cost=54335.55..54335.55 rows=298415 width=40) (actual time=1115.766..1115.766 rows=296845 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21488kB
                           Buffers: shared hit=38835 read=2585
                           ->  Bitmap Heap Scan on part  (cost=5776.05..54335.55 rows=298415 width=40) (actual time=120.870..766.315 rows=296845 loops=1)
                                 Recheck Cond: (p_size = ANY ('{46,7,34,15,41,28,10,50}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'LARGE ANODIZED%'::text))
                                 Rows Removed by Filter: 23020
                                 Buffers: shared hit=38835 read=2585
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5701.45 rows=321500 width=0) (actual time=106.442..106.442 rows=319865 loops=1)
                                       Index Cond: (p_size = ANY ('{46,7,34,15,41,28,10,50}'::integer[]))
                                       Buffers: shared hit=127 read=773
 Total runtime: 45449.079 ms
(32 rows)

COMMIT;
COMMIT