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#55'
	and p_type not like 'LARGE BURNISHED%'
	and p_size in (18, 28, 12, 20, 8, 46, 10, 30)
	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=456609.91..456679.54 rows=27854 width=40) (actual time=52031.634..52036.012 rows=27838 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=19349 read=193092 written=4841
   ->  GroupAggregate  (cost=446849.39..454553.50 rows=27854 width=40) (actual time=50745.174..51658.577 rows=27838 loops=1)
         Buffers: shared hit=19333 read=193092 written=4841
         ->  Sort  (cost=446849.39..448334.50 rows=594046 width=40) (actual time=50745.049..51030.400 rows=1186800 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141871kB
               Buffers: shared hit=19333 read=193092 written=4841
               ->  Hash Join  (cost=57981.28..389879.74 rows=594046 width=40) (actual time=2352.114..18796.651 rows=1186800 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=19333 read=193092 written=4841
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=1.348..8271.199 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=19324 read=151691 written=1409
                           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..1.239 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54258.95..54258.95 rows=297108 width=40) (actual time=2350.364..2350.364 rows=296866 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21473kB
                           Buffers: shared hit=9 read=41401 written=3432
                           ->  Bitmap Heap Scan on part  (cost=5736.62..54258.95 rows=297108 width=40) (actual time=164.741..2089.621 rows=296866 loops=1)
                                 Recheck Cond: (p_size = ANY ('{18,28,12,20,8,46,10,30}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'LARGE BURNISHED%'::text))
                                 Rows Removed by Filter: 22898
                                 Buffers: shared hit=9 read=41401 written=3432
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5662.35 rows=320013 width=0) (actual time=147.477..147.477 rows=319764 loops=1)
                                       Index Cond: (p_size = ANY ('{18,28,12,20,8,46,10,30}'::integer[]))
                                       Buffers: shared hit=7 read=890 written=147
 Total runtime: 52065.485 ms
(32 rows)

COMMIT;
COMMIT