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 'MEDIUM ANODIZED%'
	and p_size in (36, 44, 31, 26, 50, 49, 28, 38)
	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=456425.65..456495.12 rows=27790 width=40) (actual time=51840.528..51842.342 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=58373 read=154081 written=5
   ->  GroupAggregate  (cost=446685.90..454374.43 rows=27790 width=40) (actual time=50560.152..51493.262 rows=27840 loops=1)
         Buffers: shared hit=58357 read=154081 written=5
         ->  Sort  (cost=446685.90..448168.03 rows=592850 width=40) (actual time=50560.059..50853.189 rows=1189521 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142084kB
               Buffers: shared hit=58357 read=154081 written=5
               ->  Hash Join  (cost=57953.07..389839.57 rows=592850 width=40) (actual time=2150.664..17369.785 rows=1189521 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=58357 read=154081 written=5
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=4.690..8221.363 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=46716 read=124299 written=5
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=1.303..4.578 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54239.28..54239.28 rows=296425 width=40) (actual time=2145.569..2145.569 rows=297535 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21522kB
                           Buffers: shared hit=11641 read=29782
                           ->  Bitmap Heap Scan on part  (cost=5731.95..54239.28 rows=296425 width=40) (actual time=205.073..1907.783 rows=297535 loops=1)
                                 Recheck Cond: (p_size = ANY ('{36,44,31,26,50,49,28,38}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'MEDIUM ANODIZED%'::text))
                                 Rows Removed by Filter: 22833
                                 Buffers: shared hit=11641 read=29782
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5657.85 rows=319413 width=0) (actual time=193.543..193.543 rows=320368 loops=1)
                                       Index Cond: (p_size = ANY ('{36,44,31,26,50,49,28,38}'::integer[]))
                                       Buffers: shared hit=9 read=894
 Total runtime: 51861.530 ms
(32 rows)

COMMIT;
COMMIT