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#41'
	and p_type not like 'LARGE PLATED%'
	and p_size in (45, 5, 41, 1, 38, 19, 28, 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=416955.70..417025.55 rows=27941 width=40) (actual time=11408.681..11412.475 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=115260 read=97176 written=11
   ->  GroupAggregate  (cost=407161.99..414892.25 rows=27941 width=40) (actual time=10597.608..11352.829 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=115246 read=97176 written=11
         ->  Sort  (cost=407161.99..408652.16 rows=596068 width=40) (actual time=10597.534..10770.457 rows=1188225 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141983kB
               Buffers: shared hit=115246 read=97176 written=11
               ->  Hash Join  (cost=58065.13..349983.81 rows=596068 width=40) (actual time=1007.085..6499.993 rows=1188225 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=115246 read=97176 written=11
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.692..3905.138 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=96048 read=74966 written=11
                           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..0.608 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54323.48..54323.48 rows=298034 width=40) (actual time=1001.092..1001.092 rows=297231 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25637kB
                           Buffers: shared hit=19198 read=22210
                           ->  Bitmap Heap Scan on part  (cost=5774.16..54323.48 rows=298034 width=40) (actual time=130.043..864.284 rows=297231 loops=1)
                                 Recheck Cond: (p_size = ANY ('{45,5,41,1,38,19,28,34}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#41'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text))
                                 Rows Removed by Filter: 23004
                                 Heap Blocks: exact=40508
                                 Buffers: shared hit=19198 read=22210
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5699.65 rows=321093 width=0) (actual time=114.466..114.466 rows=320235 loops=1)
                                       Index Cond: (p_size = ANY ('{45,5,41,1,38,19,28,34}'::integer[]))
                                       Buffers: shared hit=7 read=893
 Planning time: 6.110 ms
 Execution time: 11429.755 ms
(35 rows)

COMMIT;
COMMIT