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#11'
	and p_type not like 'PROMO PLATED%'
	and p_size in (21, 9, 50, 39, 14, 23, 42, 3)
	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=416564.74..416634.32 rows=27832 width=40) (actual time=11026.314..11029.544 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=130577 read=81865 written=52
   ->  GroupAggregate  (cost=406809.95..414510.12 rows=27832 width=40) (actual time=9998.482..10970.984 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=130563 read=81865 written=52
         ->  Sort  (cost=406809.95..408294.32 rows=593748 width=40) (actual time=9998.384..10315.437 rows=1187356 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141915kB
               Buffers: shared hit=130563 read=81865 written=52
               ->  Hash Join  (cost=57975.54..349871.02 rows=593748 width=40) (actual time=782.286..6249.094 rows=1187356 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=130563 read=81865 written=52
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.488..3767.727 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=97562 read=73452 written=45
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.042..0.445 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54248.39..54248.39 rows=296874 width=40) (actual time=779.266..779.266 rows=297003 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25621kB
                           Buffers: shared hit=33001 read=8413 written=7
                           ->  Bitmap Heap Scan on part  (cost=5735.07..54248.39 rows=296874 width=40) (actual time=91.350..654.338 rows=297003 loops=1)
                                 Recheck Cond: (p_size = ANY ('{21,9,50,39,14,23,42,3}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#11'::bpchar) AND ((p_type)::text !~~ 'PROMO PLATED%'::text))
                                 Rows Removed by Filter: 23000
                                 Heap Blocks: exact=40514
                                 Buffers: shared hit=33001 read=8413 written=7
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5660.85 rows=319653 width=0) (actual time=80.416..80.416 rows=320003 loops=1)
                                       Index Cond: (p_size = ANY ('{21,9,50,39,14,23,42,3}'::integer[]))
                                       Buffers: shared hit=7 read=893
 Planning time: 4.518 ms
 Execution time: 11040.915 ms
(35 rows)

COMMIT;
COMMIT