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#22'
	and p_type not like 'MEDIUM BURNISHED%'
	and p_size in (8, 22, 31, 41, 1, 6, 5, 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=456405.48..456475.23 rows=27898 width=40) (actual time=55068.452..55072.432 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=127646 read=84800 written=2740
   ->  GroupAggregate  (cost=446664.41..454345.51 rows=27898 width=40) (actual time=53731.393..54696.896 rows=27839 loops=1)
         Buffers: shared hit=127630 read=84800 written=2740
         ->  Sort  (cost=446664.41..448144.83 rows=592170 width=40) (actual time=53731.280..54035.745 rows=1185212 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141747kB
               Buffers: shared hit=127630 read=84800 written=2740
               ->  Hash Join  (cost=58008.48..389888.18 rows=592170 width=40) (actual time=3681.800..21985.627 rows=1185212 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=127630 read=84800 written=2740
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.798..10471.648 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=122812 read=48203 written=2058
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.132..1.715 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54280.28..54280.28 rows=297578 width=40) (actual time=3679.718..3679.718 rows=296474 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21447kB
                           Buffers: shared hit=4818 read=36597 written=682
                           ->  Bitmap Heap Scan on part  (cost=5741.60..54280.28 rows=297578 width=40) (actual time=247.070..3416.303 rows=296474 loops=1)
                                 Recheck Cond: (p_size = ANY ('{8,22,31,41,1,6,5,34}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#22'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text))
                                 Rows Removed by Filter: 23034
                                 Buffers: shared hit=4818 read=36597 written=682
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5667.21 rows=320667 width=0) (actual time=229.784..229.784 rows=319508 loops=1)
                                       Index Cond: (p_size = ANY ('{8,22,31,41,1,6,5,34}'::integer[]))
                                       Buffers: shared hit=9 read=891
 Total runtime: 55089.198 ms
(32 rows)

COMMIT;
COMMIT