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 'ECONOMY BURNISHED%'
	and p_size in (41, 40, 44, 17, 48, 18, 7, 34)
	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=417228.29..417298.35 rows=28024 width=40) (actual time=10665.682..10672.440 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=131070 read=81372 written=143
   ->  GroupAggregate  (cost=407404.92..415158.11 rows=28024 width=40) (actual time=9706.606..10608.631 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=131056 read=81372 written=143
         ->  Sort  (cost=407404.92..408899.51 rows=597836 width=40) (actual time=9706.528..9989.653 rows=1187592 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141933kB
               Buffers: shared hit=131056 read=81372 written=143
               ->  Hash Join  (cost=58108.01..350044.37 rows=597836 width=40) (actual time=905.929..6223.319 rows=1187592 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=131056 read=81372 written=143
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.423..3583.836 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=117976 read=53038 written=90
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.040..0.375 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54355.31..54355.31 rows=298918 width=40) (actual time=902.358..902.358 rows=297070 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25577kB
                           Buffers: shared hit=13080 read=28334 written=53
                           ->  Bitmap Heap Scan on part  (cost=5781.64..54355.31 rows=298918 width=40) (actual time=87.527..770.300 rows=297070 loops=1)
                                 Recheck Cond: (p_size = ANY ('{41,40,44,17,48,18,7,34}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'ECONOMY BURNISHED%'::text))
                                 Rows Removed by Filter: 23081
                                 Heap Blocks: exact=40515
                                 Buffers: shared hit=13080 read=28334 written=53
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5706.91 rows=322067 width=0) (actual time=76.499..76.499 rows=320151 loops=1)
                                       Index Cond: (p_size = ANY ('{41,40,44,17,48,18,7,34}'::integer[]))
                                       Buffers: shared hit=12 read=887 written=5
 Planning time: 4.646 ms
 Execution time: 10693.777 ms
(35 rows)

COMMIT;
COMMIT