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#21'
	and p_type not like 'MEDIUM BRUSHED%'
	and p_size in (50, 33, 9, 44, 22, 15, 3, 13)
	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=456138.91..456208.42 rows=27801 width=40) (actual time=47521.694..47523.746 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=19245 read=193195 written=301
   ->  GroupAggregate  (cost=446427.32..454086.80 rows=27801 width=40) (actual time=46177.434..47128.747 rows=27840 loops=1)
         Buffers: shared hit=19229 read=193195 written=301
         ->  Sort  (cost=446427.32..447903.61 rows=590518 width=40) (actual time=46177.308..46470.212 rows=1184775 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141713kB
               Buffers: shared hit=19229 read=193195 written=301
               ->  Hash Join  (cost=57958.20..389821.38 rows=590518 width=40) (actual time=1439.039..14732.395 rows=1184775 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=19229 read=193195 written=301
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=0.963..6503.971 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=11034 read=159981 written=218
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.083..0.901 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54243.00..54243.00 rows=296538 width=40) (actual time=1437.131..1437.131 rows=296361 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21452kB
                           Buffers: shared hit=8195 read=33214 written=83
                           ->  Bitmap Heap Scan on part  (cost=5732.82..54243.00 rows=296538 width=40) (actual time=110.475..1223.678 rows=296361 loops=1)
                                 Recheck Cond: (p_size = ANY ('{50,33,9,44,22,15,3,13}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#21'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BRUSHED%'::text))
                                 Rows Removed by Filter: 22897
                                 Buffers: shared hit=8195 read=33214 written=83
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5658.69 rows=319527 width=0) (actual time=98.674..98.674 rows=319258 loops=1)
                                       Index Cond: (p_size = ANY ('{50,33,9,44,22,15,3,13}'::integer[]))
                                       Buffers: shared hit=7 read=892
 Total runtime: 47538.264 ms
(32 rows)

COMMIT;
COMMIT