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#25'
	and p_type not like 'SMALL BRUSHED%'
	and p_size in (25, 20, 30, 29, 47, 33, 12, 38)
	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=456740.94..456810.67 rows=27894 width=40) (actual time=45430.363..45433.109 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=174874 read=37571
   ->  GroupAggregate  (cost=446966.31..454681.29 rows=27894 width=40) (actual time=44135.842..45067.277 rows=27839 loops=1)
         Buffers: shared hit=174858 read=37571
         ->  Sort  (cost=446966.31..448453.52 rows=594883 width=40) (actual time=44135.720..44428.354 rows=1188345 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141992kB
               Buffers: shared hit=174858 read=37571
               ->  Hash Join  (cost=58003.52..389910.35 rows=594883 width=40) (actual time=789.467..12184.285 rows=1188345 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=174858 read=37571
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=0.776..4679.895 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=134336 read=36679
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.064..0.701 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54275.95..54275.95 rows=297527 width=40) (actual time=788.390..788.390 rows=297249 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21534kB
                           Buffers: shared hit=40522 read=892
                           ->  Bitmap Heap Scan on part  (cost=5740.63..54275.95 rows=297527 width=40) (actual time=96.042..618.638 rows=297249 loops=1)
                                 Recheck Cond: (p_size = ANY ('{25,20,30,29,47,33,12,38}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#25'::bpchar) AND ((p_type)::text !~~ 'SMALL BRUSHED%'::text))
                                 Rows Removed by Filter: 23077
                                 Buffers: shared hit=40522 read=892
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5666.25 rows=320533 width=0) (actual time=81.885..81.885 rows=320326 loops=1)
                                       Index Cond: (p_size = ANY ('{25,20,30,29,47,33,12,38}'::integer[]))
                                       Buffers: shared hit=8 read=892
 Total runtime: 45451.325 ms
(32 rows)

COMMIT;
COMMIT