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#44'
	and p_type not like 'SMALL POLISHED%'
	and p_size in (47, 50, 35, 24, 20, 30, 45, 4)
	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=456930.03..457000.07 rows=28015 width=40) (actual time=47642.644..47646.101 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=83223 read=129217
   ->  GroupAggregate  (cost=447135.94..454860.58 rows=28015 width=40) (actual time=46322.794..47264.890 rows=27839 loops=1)
         Buffers: shared hit=83207 read=129217
         ->  Sort  (cost=447135.94..448624.84 rows=595559 width=40) (actual time=46322.687..46623.128 rows=1189207 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142059kB
               Buffers: shared hit=83207 read=129217
               ->  Hash Join  (cost=58096.67..390010.26 rows=595559 width=40) (actual time=1676.045..14738.081 rows=1189207 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=83207 read=129217
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.525..6007.186 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=76232 read=94783
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.136..1.401 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54353.00..54353.00 rows=298816 width=40) (actual time=1673.848..1673.848 rows=297472 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21530kB
                           Buffers: shared hit=6975 read=34434
                           ->  Bitmap Heap Scan on part  (cost=5780.17..54353.00 rows=298816 width=40) (actual time=143.156..1445.111 rows=297472 loops=1)
                                 Recheck Cond: (p_size = ANY ('{47,50,35,24,20,30,45,4}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#44'::bpchar) AND ((p_type)::text !~~ 'SMALL POLISHED%'::text))
                                 Rows Removed by Filter: 23027
                                 Buffers: shared hit=6975 read=34434
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5705.47 rows=322033 width=0) (actual time=126.832..126.832 rows=320499 loops=1)
                                       Index Cond: (p_size = ANY ('{47,50,35,24,20,30,45,4}'::integer[]))
                                       Buffers: shared hit=7 read=892
 Total runtime: 47662.164 ms
(32 rows)

COMMIT;
COMMIT