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 'ECONOMY PLATED%'
	and p_size in (20, 35, 30, 42, 46, 43, 37, 19)
	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=416121.68..416191.18 rows=27800 width=40) (actual time=10740.340..10743.814 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=155158 read=57284
   ->  GroupAggregate  (cost=406413.01..414069.65 rows=27800 width=40) (actual time=9688.392..10687.570 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=155144 read=57284
         ->  Sort  (cost=406413.01..407888.74 rows=590291 width=40) (actual time=9688.226..10037.675 rows=1187066 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141892kB
               Buffers: shared hit=155144 read=57284
               ->  Hash Join  (cost=57969.56..349830.47 rows=590291 width=40) (actual time=1015.526..5859.697 rows=1187066 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=155144 read=57284
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.484..3327.122 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=154702 read=16312
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.042..0.429 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54246.79..54246.79 rows=296523 width=40) (actual time=1011.175..1011.175 rows=296937 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25592kB
                           Buffers: shared hit=442 read=40972
                           ->  Bitmap Heap Scan on part  (cost=5734.62..54246.79 rows=296523 width=40) (actual time=80.515..871.872 rows=296937 loops=1)
                                 Recheck Cond: (p_size = ANY ('{20,35,30,42,46,43,37,19}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#43'::bpchar) AND ((p_type)::text !~~ 'ECONOMY PLATED%'::text))
                                 Rows Removed by Filter: 23385
                                 Heap Blocks: exact=40517
                                 Buffers: shared hit=442 read=40972
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5660.49 rows=319607 width=0) (actual time=70.954..70.954 rows=320322 loops=1)
                                       Index Cond: (p_size = ANY ('{20,35,30,42,46,43,37,19}'::integer[]))
                                       Buffers: shared hit=10 read=887
 Planning time: 4.451 ms
 Execution time: 10768.526 ms
(35 rows)

COMMIT;
COMMIT