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#45'
	and p_type not like 'LARGE BURNISHED%'
	and p_size in (25, 48, 37, 12, 16, 39, 19, 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=416647.89..416717.53 rows=27854 width=40) (actual time=8077.745..8079.577 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=206131 read=6308
   ->  GroupAggregate  (cost=406885.30..414591.49 rows=27854 width=40) (actual time=7392.336..8029.787 rows=27839 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=206117 read=6308
         ->  Sort  (cost=406885.30..408370.83 rows=594212 width=40) (actual time=7392.269..7526.054 rows=1187965 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141962kB
               Buffers: shared hit=206117 read=6308
               ->  Hash Join  (cost=57998.41..349898.53 rows=594212 width=40) (actual time=651.150..5000.369 rows=1187965 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=206117 read=6308
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.401..3018.485 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=170901 read=113
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.039..0.356 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54268.36..54268.36 rows=297106 width=40) (actual time=648.372..648.372 rows=297165 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25594kB
                           Buffers: shared hit=35216 read=6195
                           ->  Bitmap Heap Scan on part  (cost=5739.68..54268.36 rows=297106 width=40) (actual time=66.692..535.750 rows=297165 loops=1)
                                 Recheck Cond: (p_size = ANY ('{25,48,37,12,16,39,19,30}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#45'::bpchar) AND ((p_type)::text !~~ 'LARGE BURNISHED%'::text))
                                 Rows Removed by Filter: 22860
                                 Heap Blocks: exact=40514
                                 Buffers: shared hit=35216 read=6195
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5665.41 rows=320267 width=0) (actual time=57.936..57.936 rows=320025 loops=1)
                                       Index Cond: (p_size = ANY ('{25,48,37,12,16,39,19,30}'::integer[]))
                                       Buffers: shared hit=8 read=889
 Planning time: 3.809 ms
 Execution time: 8089.835 ms
(35 rows)

COMMIT;
COMMIT