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#43'
	and p_type not like 'PROMO BURNISHED%'
	and p_size in (30, 48, 33, 31, 36, 22, 18, 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=416467.05..416536.82 rows=27909 width=40) (actual time=11045.866..11052.043 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=88282 read=124159 written=134
   ->  GroupAggregate  (cost=406719.52..414406.19 rows=27909 width=40) (actual time=10261.791..10990.012 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=88268 read=124159 written=134
         ->  Sort  (cost=406719.52..408201.04 rows=592606 width=40) (actual time=10261.713..10433.691 rows=1186724 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141865kB
               Buffers: shared hit=88268 read=124159 written=134
               ->  Hash Join  (cost=58014.29..349898.35 rows=592606 width=40) (actual time=1144.495..6682.998 rows=1186724 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=88268 read=124159 written=134
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.501..3791.742 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=87533 read=83481 written=104
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.049..0.440 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54276.98..54276.98 rows=297686 width=40) (actual time=1139.185..1139.185 rows=296858 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25568kB
                           Buffers: shared hit=735 read=40678 written=30
                           ->  Bitmap Heap Scan on part  (cost=5741.81..54276.98 rows=297686 width=40) (actual time=105.586..978.446 rows=296858 loops=1)
                                 Recheck Cond: (p_size = ANY ('{30,48,33,31,36,22,18,4}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#43'::bpchar) AND ((p_type)::text !~~ 'PROMO BURNISHED%'::text))
                                 Rows Removed by Filter: 23027
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=735 read=40678 written=30
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5667.39 rows=320527 width=0) (actual time=92.538..92.538 rows=319885 loops=1)
                                       Index Cond: (p_size = ANY ('{30,48,33,31,36,22,18,4}'::integer[]))
                                       Buffers: shared hit=9 read=888 written=3
 Planning time: 3.912 ms
 Execution time: 11071.218 ms
(35 rows)

COMMIT;
COMMIT