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#13'
	and p_type not like 'MEDIUM ANODIZED%'
	and p_size in (17, 15, 45, 14, 49, 50, 13, 2)
	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=415538.74..415607.82 rows=27629 width=40) (actual time=9112.841..9116.357 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=167104 read=45335 written=12
   ->  GroupAggregate  (cost=405890.99..413500.57 rows=27629 width=40) (actual time=8353.022..9059.863 rows=27840 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=167090 read=45335 written=12
         ->  Sort  (cost=405890.99..407357.65 rows=586663 width=40) (actual time=8352.940..8510.972 rows=1183269 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141595kB
               Buffers: shared hit=167090 read=45335 written=12
               ->  Hash Join  (cost=57857.67..349682.30 rows=586663 width=40) (actual time=947.350..5568.802 rows=1183269 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=167090 read=45335 written=12
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.507..3159.959 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=167075 read=3939 written=2
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.044..0.450 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54157.68..54157.68 rows=294701 width=40) (actual time=944.511..944.511 rows=295980 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25504kB
                           Buffers: shared hit=15 read=41396 written=10
                           ->  Bitmap Heap Scan on part  (cost=5692.18..54157.68 rows=294701 width=40) (actual time=77.129..817.395 rows=295980 loops=1)
                                 Recheck Cond: (p_size = ANY ('{17,15,45,14,49,50,13,2}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#13'::bpchar) AND ((p_type)::text !~~ 'MEDIUM ANODIZED%'::text))
                                 Rows Removed by Filter: 22755
                                 Heap Blocks: exact=40517
                                 Buffers: shared hit=15 read=41396 written=10
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5618.51 rows=317740 width=0) (actual time=67.458..67.458 rows=318735 loops=1)
                                       Index Cond: (p_size = ANY ('{17,15,45,14,49,50,13,2}'::integer[]))
                                       Buffers: shared hit=12 read=882
 Planning time: 4.081 ms
 Execution time: 9130.524 ms
(35 rows)

COMMIT;
COMMIT