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#34'
	and p_type not like 'SMALL BURNISHED%'
	and p_size in (24, 1, 20, 23, 48, 50, 46, 41)
	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=456555.89..456625.47 rows=27831 width=40) (actual time=53071.053..53073.455 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=176131 read=36313 written=9
   ->  GroupAggregate  (cost=446801.44..454501.35 rows=27831 width=40) (actual time=51700.106..52671.514 rows=27839 loops=1)
         Buffers: shared hit=176115 read=36313 written=9
         ->  Sort  (cost=446801.44..448285.76 rows=593728 width=40) (actual time=51700.008..52008.272 rows=1191126 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 142209kB
               Buffers: shared hit=176115 read=36313 written=9
               ->  Hash Join  (cost=57969.30..389864.58 rows=593728 width=40) (actual time=3216.037..18289.346 rows=1191126 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=176115 read=36313 written=9
                     ->  Seq Scan on partsupp  (cost=8.48..270966.48 rows=4000000 width=8) (actual time=2.581..7436.566 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=170188 read=827 written=9
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.00..8.45 rows=10 width=4) (actual time=0.091..2.473 rows=56 loops=1)
                                   Buffers: shared hit=55 read=2
                     ->  Hash  (cost=54250.02..54250.02 rows=296864 width=40) (actual time=3213.072..3213.072 rows=297949 loops=1)
                           Buckets: 32768  Batches: 1  Memory Usage: 21552kB
                           Buffers: shared hit=5927 read=35486
                           ->  Bitmap Heap Scan on part  (cost=5734.52..54250.02 rows=296864 width=40) (actual time=214.806..2905.837 rows=297949 loops=1)
                                 Recheck Cond: (p_size = ANY ('{24,1,20,23,48,50,46,41}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#34'::bpchar) AND ((p_type)::text !~~ 'SMALL BURNISHED%'::text))
                                 Rows Removed by Filter: 23113
                                 Buffers: shared hit=5927 read=35486
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5660.31 rows=319740 width=0) (actual time=193.610..193.610 rows=321062 loops=1)
                                       Index Cond: (p_size = ANY ('{24,1,20,23,48,50,46,41}'::integer[]))
                                       Buffers: shared hit=10 read=892
 Total runtime: 53095.974 ms
(32 rows)

COMMIT;
COMMIT