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#25'
	and p_type not like 'SMALL ANODIZED%'
	and p_size in (28, 7, 8, 47, 15, 46, 4, 18)
	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=416154.51..416223.76 rows=27703 width=40) (actual time=10287.505..10291.314 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=37054 read=175386 written=35
   ->  GroupAggregate  (cost=406445.86..414110.34 rows=27703 width=40) (actual time=9504.867..10230.921 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=37040 read=175386 written=35
         ->  Sort  (cost=406445.86..407923.35 rows=590996 width=40) (actual time=9504.797..9660.614 rows=1186015 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141810kB
               Buffers: shared hit=37040 read=175386 written=35
               ->  Hash Join  (cost=57922.69..349790.65 rows=590996 width=40) (actual time=773.482..6637.877 rows=1186015 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=37040 read=175386 written=35
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.470..4321.568 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=6587 read=164427 written=35
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.054..0.420 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54212.74..54212.74 rows=295498 width=40) (actual time=770.437..770.437 rows=296671 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25571kB
                           Buffers: shared hit=30453 read=10959
                           ->  Bitmap Heap Scan on part  (cost=5726.56..54212.74 rows=295498 width=40) (actual time=87.619..651.886 rows=296671 loops=1)
                                 Recheck Cond: (p_size = ANY ('{28,7,8,47,15,46,4,18}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#25'::bpchar) AND ((p_type)::text !~~ 'SMALL ANODIZED%'::text))
                                 Rows Removed by Filter: 22990
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=30453 read=10959
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5652.69 rows=318567 width=0) (actual time=76.795..76.795 rows=319661 loops=1)
                                       Index Cond: (p_size = ANY ('{28,7,8,47,15,46,4,18}'::integer[]))
                                       Buffers: shared hit=11 read=885
 Planning time: 4.566 ms
 Execution time: 10303.393 ms
(35 rows)

COMMIT;
COMMIT