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 'PROMO BRUSHED%'
	and p_size in (5, 4, 29, 41, 30, 12, 14, 1)
	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=416918.84..416988.65 rows=27926 width=40) (actual time=13993.638..13997.980 rows=27837 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=43733 read=168712 written=5325
   ->  GroupAggregate  (cost=407130.59..414856.60 rows=27926 width=40) (actual time=12954.963..13935.651 rows=27837 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=43719 read=168712 written=5325
         ->  Sort  (cost=407130.59..408619.94 rows=595740 width=40) (actual time=12954.855..13269.790 rows=1187252 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141907kB
               Buffers: shared hit=43719 read=168712 written=5325
               ->  Hash Join  (cost=58070.84..349986.24 rows=595740 width=40) (actual time=1042.813..7498.389 rows=1187252 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=43719 read=168712 written=5325
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.632..4595.111 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=7427 read=163587 written=5318
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.058..0.563 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54331.24..54331.24 rows=297870 width=40) (actual time=1038.967..1038.967 rows=296993 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25610kB
                           Buffers: shared hit=36292 read=5125 written=7
                           ->  Bitmap Heap Scan on part  (cost=5775.91..54331.24 rows=297870 width=40) (actual time=129.631..872.913 rows=296993 loops=1)
                                 Recheck Cond: (p_size = ANY ('{5,4,29,41,30,12,14,1}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#45'::bpchar) AND ((p_type)::text !~~ 'PROMO BRUSHED%'::text))
                                 Rows Removed by Filter: 22931
                                 Heap Blocks: exact=40520
                                 Buffers: shared hit=36292 read=5125 written=7
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5701.45 rows=321333 width=0) (actual time=114.420..114.420 rows=319924 loops=1)
                                       Index Cond: (p_size = ANY ('{5,4,29,41,30,12,14,1}'::integer[]))
                                       Buffers: shared hit=12 read=885
 Planning time: 5.594 ms
 Execution time: 14018.386 ms
(35 rows)

COMMIT;
COMMIT