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#35'
	and p_type not like 'MEDIUM BURNISHED%'
	and p_size in (15, 4, 18, 38, 22, 50, 43, 25)
	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=416526.28..416595.82 rows=27816 width=40) (actual time=9816.004..9819.905 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=168789 read=43652 written=22
   ->  GroupAggregate  (cost=406777.37..414472.95 rows=27816 width=40) (actual time=9019.845..9759.621 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=168775 read=43652 written=22
         ->  Sort  (cost=406777.37..408260.85 rows=593394 width=40) (actual time=9019.771..9180.091 rows=1185314 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141755kB
               Buffers: shared hit=168775 read=43652 written=22
               ->  Hash Join  (cost=57983.01..349874.95 rows=593394 width=40) (actual time=1118.030..6094.664 rows=1185314 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=168775 read=43652 written=22
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.537..3439.792 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=168765 read=2249 written=22
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.050..0.479 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54258.07..54258.07 rows=296697 width=40) (actual time=1114.261..1114.261 rows=296494 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25541kB
                           Buffers: shared hit=10 read=41403
                           ->  Bitmap Heap Scan on part  (cost=5737.24..54258.07 rows=296697 width=40) (actual time=95.014..986.179 rows=296494 loops=1)
                                 Recheck Cond: (p_size = ANY ('{15,4,18,38,22,50,43,25}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#35'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text))
                                 Rows Removed by Filter: 22767
                                 Heap Blocks: exact=40517
                                 Buffers: shared hit=10 read=41403
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5663.07 rows=319953 width=0) (actual time=84.197..84.197 rows=319261 loops=1)
                                       Index Cond: (p_size = ANY ('{15,4,18,38,22,50,43,25}'::integer[]))
                                       Buffers: shared hit=7 read=889
 Planning time: 4.532 ms
 Execution time: 9834.249 ms
(35 rows)

COMMIT;
COMMIT