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#55'
	and p_type not like 'SMALL BRUSHED%'
	and p_size in (31, 8, 38, 36, 6, 16, 27, 45)
	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=416249.18..416318.50 rows=27731 width=40) (actual time=10703.585..10707.414 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=84488 read=127952 written=4428
   ->  GroupAggregate  (cost=406530.50..414202.74 rows=27731 width=40) (actual time=9848.181..10646.936 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=84474 read=127952 written=4428
         ->  Sort  (cost=406530.50..408009.49 rows=591594 width=40) (actual time=9848.106..10046.142 rows=1187318 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141912kB
               Buffers: shared hit=84474 read=127952 written=4428
               ->  Hash Join  (cost=57939.71..349813.65 rows=591594 width=40) (actual time=1066.095..6605.148 rows=1187318 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=84474 read=127952 written=4428
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.523..3986.125 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=83026 read=87988 written=4382
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.051..0.467 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54226.02..54226.02 rows=295797 width=40) (actual time=1062.494..1062.494 rows=296989 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25611kB
                           Buffers: shared hit=1448 read=39964 written=46
                           ->  Bitmap Heap Scan on part  (cost=5729.70..54226.02 rows=295797 width=40) (actual time=92.554..934.703 rows=296989 loops=1)
                                 Recheck Cond: (p_size = ANY ('{31,8,38,36,6,16,27,45}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'SMALL BRUSHED%'::text))
                                 Rows Removed by Filter: 23039
                                 Heap Blocks: exact=40513
                                 Buffers: shared hit=1448 read=39964 written=46
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5655.75 rows=318973 width=0) (actual time=81.511..81.511 rows=320028 loops=1)
                                       Index Cond: (p_size = ANY ('{31,8,38,36,6,16,27,45}'::integer[]))
                                       Buffers: shared hit=7 read=892
 Planning time: 4.585 ms
 Execution time: 10722.251 ms
(35 rows)

COMMIT;
COMMIT