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#43'
	and p_type not like 'ECONOMY BRUSHED%'
	and p_size in (19, 18, 38, 36, 1, 48, 44, 47)
	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=416612.93..416682.54 rows=27844 width=40) (actual time=8934.283..8935.936 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=83 read=212363
   ->  GroupAggregate  (cost=406854.02..414557.33 rows=27844 width=40) (actual time=8255.446..8886.859 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=69 read=212363
         ->  Sort  (cost=406854.02..408338.99 rows=593990 width=40) (actual time=8255.376..8387.046 rows=1188008 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141966kB
               Buffers: shared hit=69 read=212363
               ->  Hash Join  (cost=57992.24..349890.14 rows=593990 width=40) (actual time=943.011..5918.363 rows=1188008 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=69 read=212363
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=1.264..3645.936 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=57 read=170957
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.060..1.161 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54263.58..54263.58 rows=296995 width=40) (actual time=937.750..937.750 rows=297174 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25592kB
                           Buffers: shared hit=12 read=41406
                           ->  Bitmap Heap Scan on part  (cost=5738.58..54263.58 rows=296995 width=40) (actual time=70.128..817.891 rows=297174 loops=1)
                                 Recheck Cond: (p_size = ANY ('{19,18,38,36,1,48,44,47}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#43'::bpchar) AND ((p_type)::text !~~ 'ECONOMY BRUSHED%'::text))
                                 Rows Removed by Filter: 23518
                                 Heap Blocks: exact=40517
                                 Buffers: shared hit=12 read=41406
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5664.33 rows=320120 width=0) (actual time=60.581..60.581 rows=320692 loops=1)
                                       Index Cond: (p_size = ANY ('{19,18,38,36,1,48,44,47}'::integer[]))
                                       Buffers: shared hit=10 read=891
 Planning time: 6.974 ms
 Execution time: 8943.715 ms
(35 rows)

COMMIT;
COMMIT