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#45'
	and p_type not like 'ECONOMY POLISHED%'
	and p_size in (27, 37, 19, 39, 45, 18, 22, 28)
	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=456254.61..456324.21 rows=27838 width=40) (actual time=45180.555..45182.430 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=92996 read=119444
   ->  GroupAggregate  (cost=446529.75..454199.50 rows=27838 width=40) (actual time=43876.295..44825.356 rows=27840 loops=1)
         Buffers: shared hit=92980 read=119444
         ->  Sort  (cost=446529.75..448008.02 rows=591310 width=40) (actual time=43876.176..44184.921 rows=1183765 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141634kB
               Buffers: shared hit=92980 read=119444
               ->  Hash Join  (cost=57971.07..389842.17 rows=591310 width=40) (actual time=1006.145..12151.845 rows=1183765 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=92980 read=119444
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=0.891..4980.553 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=66585 read=104430
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.076..0.823 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54250.90..54250.90 rows=296936 width=40) (actual time=1004.956..1004.956 rows=296128 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21420kB
                           Buffers: shared hit=26395 read=15014
                           ->  Bitmap Heap Scan on part  (cost=5734.72..54250.90 rows=296936 width=40) (actual time=86.665..823.622 rows=296128 loops=1)
                                 Recheck Cond: (p_size = ANY ('{27,37,19,39,45,18,22,28}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#45'::bpchar) AND ((p_type)::text !~~ 'ECONOMY POLISHED%'::text))
                                 Rows Removed by Filter: 23168
                                 Buffers: shared hit=26395 read=15014
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5660.49 rows=319767 width=0) (actual time=75.668..75.668 rows=319296 loops=1)
                                       Index Cond: (p_size = ANY ('{27,37,19,39,45,18,22,28}'::integer[]))
                                       Buffers: shared hit=10 read=887
 Total runtime: 45200.773 ms
(32 rows)

COMMIT;
COMMIT