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 POLISHED%'
	and p_size in (1, 33, 44, 14, 2, 19, 34, 26)
	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=415724.54..415793.50 rows=27583 width=40) (actual time=12298.522..12303.165 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=30861 read=181581 written=27
   ->  GroupAggregate  (cost=406058.91..413690.09 rows=27583 width=40) (actual time=11434.460..12238.585 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=30847 read=181581 written=27
         ->  Sort  (cost=406058.91..407529.98 rows=588428 width=40) (actual time=11434.364..11638.500 rows=1185225 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141748kB
               Buffers: shared hit=30847 read=181581 written=27
               ->  Hash Join  (cost=57826.08..349668.36 rows=588428 width=40) (actual time=1255.493..7930.252 rows=1185225 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=30847 read=181581 written=27
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.652..4511.781 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=28549 read=142465 written=27
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.063..0.573 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54132.18..54132.18 rows=294214 width=40) (actual time=1252.148..1252.148 rows=296480 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25557kB
                           Buffers: shared hit=2298 read=39116
                           ->  Bitmap Heap Scan on part  (cost=5686.18..54132.18 rows=294214 width=40) (actual time=122.217..1104.783 rows=296480 loops=1)
                                 Recheck Cond: (p_size = ANY ('{1,33,44,14,2,19,34,26}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'LARGE POLISHED%'::text))
                                 Rows Removed by Filter: 22865
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=2298 read=39116
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5612.63 rows=316960 width=0) (actual time=108.178..108.178 rows=319345 loops=1)
                                       Index Cond: (p_size = ANY ('{1,33,44,14,2,19,34,26}'::integer[]))
                                       Buffers: shared hit=11 read=887
 Planning time: 6.037 ms
 Execution time: 12323.361 ms
(35 rows)

COMMIT;
COMMIT