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#21'
	and p_type not like 'LARGE ANODIZED%'
	and p_size in (18, 37, 17, 11, 3, 30, 1, 46)
	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=417013.72..417083.62 rows=27957 width=40) (actual time=10290.824..10294.756 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=145401 read=67039 written=2
   ->  GroupAggregate  (cost=407214.43..414948.97 rows=27957 width=40) (actual time=9425.653..10234.692 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=145387 read=67039 written=2
         ->  Sort  (cost=407214.43..408705.42 rows=596398 width=40) (actual time=9425.570..9632.065 rows=1184816 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141716kB
               Buffers: shared hit=145387 read=67039 written=2
               ->  Hash Join  (cost=58080.24..350002.22 rows=596398 width=40) (actual time=1113.185..6231.189 rows=1184816 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=145387 read=67039 written=2
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.615..3397.063 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=143933 read=27081 written=2
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.062..0.532 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54336.52..54336.52 rows=298199 width=40) (actual time=1108.161..1108.161 rows=296374 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25550kB
                           Buffers: shared hit=1454 read=39958
                           ->  Bitmap Heap Scan on part  (cost=5777.20..54336.52 rows=298199 width=40) (actual time=120.896..960.656 rows=296374 loops=1)
                                 Recheck Cond: (p_size = ANY ('{18,37,17,11,3,30,1,46}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#21'::bpchar) AND ((p_type)::text !~~ 'LARGE ANODIZED%'::text))
                                 Rows Removed by Filter: 23035
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=1454 read=39958
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5702.65 rows=321493 width=0) (actual time=106.890..106.890 rows=319409 loops=1)
                                       Index Cond: (p_size = ANY ('{18,37,17,11,3,30,1,46}'::integer[]))
                                       Buffers: shared hit=10 read=886
 Planning time: 5.220 ms
 Execution time: 10311.736 ms
(35 rows)

COMMIT;
COMMIT