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 'LARGE BURNISHED%'
	and p_size in (43, 13, 9, 10, 4, 7, 5, 35)
	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=416760.53..416830.25 rows=27890 width=40) (actual time=9913.820..9917.737 rows=27838 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=102903 read=109537 written=23
   ->  GroupAggregate  (cost=406985.08..414701.20 rows=27890 width=40) (actual time=8915.179..9859.605 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=102889 read=109537 written=23
         ->  Sort  (cost=406985.08..408472.52 rows=594978 width=40) (actual time=8914.929..9225.434 rows=1188083 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141971kB
               Buffers: shared hit=102889 read=109537 written=23
               ->  Hash Join  (cost=58011.54..349919.32 rows=594978 width=40) (actual time=870.272..5998.209 rows=1188083 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=102889 read=109537 written=23
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.380..3672.938 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=85452 read=85562 written=23
                           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..0.326 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54276.70..54276.70 rows=297489 width=40) (actual time=866.412..866.412 rows=297179 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25592kB
                           Buffers: shared hit=17437 read=23975
                           ->  Bitmap Heap Scan on part  (cost=5741.70..54276.70 rows=297489 width=40) (actual time=80.531..734.724 rows=297179 loops=1)
                                 Recheck Cond: (p_size = ANY ('{43,13,9,10,4,7,5,35}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'LARGE BURNISHED%'::text))
                                 Rows Removed by Filter: 23082
                                 Heap Blocks: exact=40515
                                 Buffers: shared hit=17437 read=23975
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5667.33 rows=320520 width=0) (actual time=70.666..70.666 rows=320261 loops=1)
                                       Index Cond: (p_size = ANY ('{43,13,9,10,4,7,5,35}'::integer[]))
                                       Buffers: shared hit=11 read=886
 Planning time: 4.277 ms
 Execution time: 9940.460 ms
(35 rows)

COMMIT;
COMMIT