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#31'
	and p_type not like 'LARGE PLATED%'
	and p_size in (31, 5, 4, 13, 46, 47, 28, 42)
	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=416473.86..416543.37 rows=27801 width=40) (actual time=11994.148..11997.994 rows=27839 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=176033 read=36409 written=4
   ->  GroupAggregate  (cost=406730.17..414421.75 rows=27801 width=40) (actual time=11203.912..11939.923 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=176019 read=36409 written=4
         ->  Sort  (cost=406730.17..408212.88 rows=593086 width=40) (actual time=11203.825..11377.631 rows=1189195 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142058kB
               Buffers: shared hit=176019 read=36409 written=4
               ->  Hash Join  (cost=57970.64..349859.50 rows=593086 width=40) (actual time=1767.763..7957.962 rows=1189195 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=176019 read=36409 written=4
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.885..4183.302 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=149651 read=21363 written=4
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.050..0.809 rows=56 loops=1)
                                   Buffers: shared read=56
                     ->  Hash  (cost=54247.63..54247.63 rows=296543 width=40) (actual time=1764.201..1764.201 rows=297466 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25653kB
                           Buffers: shared hit=26368 read=15046
                           ->  Bitmap Heap Scan on part  (cost=5734.80..54247.63 rows=296543 width=40) (actual time=160.112..1527.968 rows=297466 loops=1)
                                 Recheck Cond: (p_size = ANY ('{31,5,4,13,46,47,28,42}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#31'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text))
                                 Rows Removed by Filter: 23112
                                 Heap Blocks: exact=40514
                                 Buffers: shared hit=26368 read=15046
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5660.67 rows=319633 width=0) (actual time=148.140..148.140 rows=320578 loops=1)
                                       Index Cond: (p_size = ANY ('{31,5,4,13,46,47,28,42}'::integer[]))
                                       Buffers: shared hit=37 read=863
 Planning time: 3.345 ms
 Execution time: 12016.537 ms
(35 rows)

COMMIT;
COMMIT