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#43'
	and p_type not like 'LARGE PLATED%'
	and p_size in (23, 24, 10, 48, 15, 17, 19, 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=457221.31..457291.37 rows=28025 width=40) (actual time=48157.710..48159.453 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=77314 read=135132 written=26
   ->  GroupAggregate  (cost=447397.64..455151.04 rows=28025 width=40) (actual time=46893.499..47807.930 rows=27839 loops=1)
         Buffers: shared hit=77298 read=135132 written=26
         ->  Sort  (cost=447397.64..448892.27 rows=597852 width=40) (actual time=46893.395..47189.216 rows=1190809 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142184kB
               Buffers: shared hit=77298 read=135132 written=26
               ->  Hash Join  (cost=58098.93..390035.45 rows=597852 width=40) (actual time=1723.907..15163.877 rows=1190809 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=77298 read=135132 written=26
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=4.336..6122.072 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=76904 read=94111 written=26
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.102..4.220 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54353.88..54353.88 rows=298926 width=40) (actual time=1718.395..1718.395 rows=297872 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21587kB
                           Buffers: shared hit=394 read=41021
                           ->  Bitmap Heap Scan on part  (cost=5780.38..54353.88 rows=298926 width=40) (actual time=183.215..1460.259 rows=297872 loops=1)
                                 Recheck Cond: (p_size = ANY ('{23,24,10,48,15,17,19,38}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#43'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text))
                                 Rows Removed by Filter: 23296
                                 Buffers: shared hit=394 read=41021
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5705.65 rows=322060 width=0) (actual time=164.781..164.781 rows=321168 loops=1)
                                       Index Cond: (p_size = ANY ('{23,24,10,48,15,17,19,38}'::integer[]))
                                       Buffers: shared hit=10 read=894
 Total runtime: 48180.189 ms
(32 rows)

COMMIT;
COMMIT