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#42'
	and p_type not like 'PROMO ANODIZED%'
	and p_size in (45, 38, 43, 25, 20, 34, 47, 18)
	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=456113.34..456182.86 rows=27810 width=40) (actual time=54585.730..54588.959 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=40985 read=171463 written=15
   ->  GroupAggregate  (cost=446403.73..454060.50 rows=27810 width=40) (actual time=52877.896..54117.000 rows=27839 loops=1)
         Buffers: shared hit=40969 read=171463 written=15
         ->  Sort  (cost=446403.73..447879.47 rows=590293 width=40) (actual time=52877.781..53195.289 rows=1186064 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141814kB
               Buffers: shared hit=40969 read=171463 written=15
               ->  Hash Join  (cost=57960.06..389820.99 rows=590293 width=40) (actual time=2016.277..20576.809 rows=1186064 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=40969 read=171463 written=15
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.370..10897.481 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=40959 read=130056 written=15
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.097..1.274 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54243.64..54243.64 rows=296635 width=40) (actual time=2014.575..2014.575 rows=296684 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21476kB
                           Buffers: shared hit=10 read=41407
                           ->  Bitmap Heap Scan on part  (cost=5732.97..54243.64 rows=296635 width=40) (actual time=134.368..1754.508 rows=296684 loops=1)
                                 Recheck Cond: (p_size = ANY ('{45,38,43,25,20,34,47,18}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#42'::bpchar) AND ((p_type)::text !~~ 'PROMO ANODIZED%'::text))
                                 Rows Removed by Filter: 22933
                                 Buffers: shared hit=10 read=41407
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5658.81 rows=319547 width=0) (actual time=119.703..119.703 rows=319617 loops=1)
                                       Index Cond: (p_size = ANY ('{45,38,43,25,20,34,47,18}'::integer[]))
                                       Buffers: shared hit=8 read=890
 Total runtime: 54615.278 ms
(32 rows)

COMMIT;
COMMIT