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#24'
	and p_type not like 'ECONOMY PLATED%'
	and p_size in (38, 8, 2, 40, 35, 22, 7, 14)
	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=456240.47..456309.80 rows=27733 width=40) (actual time=55917.659..55919.655 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=150409 read=62035 written=7
   ->  GroupAggregate  (cost=446521.24..454193.87 rows=27733 width=40) (actual time=54533.563..55516.646 rows=27840 loops=1)
         Buffers: shared hit=150393 read=62035 written=7
         ->  Sort  (cost=446521.24..448000.30 rows=591624 width=40) (actual time=54533.444..54845.556 rows=1188226 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141983kB
               Buffers: shared hit=150393 read=62035 written=7
               ->  Hash Join  (cost=57927.05..389801.29 rows=591624 width=40) (actual time=3789.460..22198.374 rows=1188226 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=150393 read=62035 written=7
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.743..9981.570 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=145137 read=25878 written=7
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.096..1.638 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54220.92..54220.92 rows=295812 width=40) (actual time=3787.459..3787.459 rows=297224 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21515kB
                           Buffers: shared hit=5256 read=36157
                           ->  Bitmap Heap Scan on part  (cost=5727.60..54220.92 rows=295812 width=40) (actual time=265.122..3516.255 rows=297224 loops=1)
                                 Recheck Cond: (p_size = ANY ('{38,8,2,40,35,22,7,14}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#24'::bpchar) AND ((p_type)::text !~~ 'ECONOMY PLATED%'::text))
                                 Rows Removed by Filter: 22846
                                 Buffers: shared hit=5256 read=36157
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5653.65 rows=318853 width=0) (actual time=250.349..250.349 rows=320070 loops=1)
                                       Index Cond: (p_size = ANY ('{38,8,2,40,35,22,7,14}'::integer[]))
                                       Buffers: shared hit=9 read=890
 Total runtime: 55952.154 ms
(32 rows)

COMMIT;
COMMIT