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#52'
	and p_type not like 'SMALL PLATED%'
	and p_size in (47, 13, 3, 22, 36, 30, 40, 15)
	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=415990.74..416059.97 rows=27691 width=40) (actual time=10096.453..10098.546 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=40539 read=171901 written=263
   ->  GroupAggregate  (cost=406298.14..413947.54 rows=27691 width=40) (actual time=9092.278..10047.408 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=40525 read=171901 written=263
         ->  Sort  (cost=406298.14..407772.64 rows=589799 width=40) (actual time=9092.180..9386.256 rows=1184682 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141706kB
               Buffers: shared hit=40525 read=171901 written=263
               ->  Hash Join  (cost=57910.32..349766.31 rows=589799 width=40) (actual time=586.529..6125.637 rows=1184682 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=40525 read=171901 written=263
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=1.181..3663.865 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=3 read=171011 written=263
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.074..1.113 rows=56 loops=1)
                                   Buffers: shared read=56
                     ->  Hash  (cost=54202.07..54202.07 rows=295362 width=40) (actual time=581.366..581.366 rows=296340 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25571kB
                           Buffers: shared hit=40522 read=890
                           ->  Bitmap Heap Scan on part  (cost=5724.07..54202.07 rows=295362 width=40) (actual time=61.795..456.815 rows=296340 loops=1)
                                 Recheck Cond: (p_size = ANY ('{47,13,3,22,36,30,40,15}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#52'::bpchar) AND ((p_type)::text !~~ 'SMALL PLATED%'::text))
                                 Rows Removed by Filter: 23173
                                 Heap Blocks: exact=40515
                                 Buffers: shared hit=40522 read=890
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5650.23 rows=318240 width=0) (actual time=53.336..53.336 rows=319513 loops=1)
                                       Index Cond: (p_size = ANY ('{47,13,3,22,36,30,40,15}'::integer[]))
                                       Buffers: shared hit=7 read=890
 Planning time: 3.070 ms
 Execution time: 10105.002 ms
(35 rows)

COMMIT;
COMMIT