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 'STANDARD PLATED%'
	and p_size in (37, 19, 22, 31, 34, 20, 1, 15)
	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=416313.39..416382.88 rows=27794 width=40) (actual time=10837.521..10839.650 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=7761 read=204680
   ->  GroupAggregate  (cost=406585.26..414261.85 rows=27794 width=40) (actual time=9763.774..10693.051 rows=27838 loops=1)
         Group Key: part.p_brand, part.p_type, part.p_size
         Buffers: shared hit=7747 read=204680
         ->  Sort  (cost=406585.26..408064.99 rows=591892 width=40) (actual time=9763.677..10069.680 rows=1182813 loops=1)
               Sort Key: part.p_brand, part.p_type, part.p_size
               Sort Method: quicksort  Memory: 141560kB
               Buffers: shared hit=7747 read=204680
               ->  Hash Join  (cost=57960.77..349837.69 rows=591892 width=40) (actual time=899.563..6628.595 rows=1182813 loops=1)
                     Hash Cond: (partsupp.ps_partkey = part.p_partkey)
                     Buffers: shared hit=7747 read=204680
                     ->  Seq Scan on partsupp  (cost=16.23..270974.23 rows=4000000 width=8) (actual time=0.650..3813.228 rows=7995520 loops=1)
                           Filter: (NOT (hashed SubPlan 1))
                           Rows Removed by Filter: 4480
                           Buffers: shared hit=57 read=170957
                           SubPlan 1
                             ->  Index Scan using supplier_s_suppkey_idx_like on supplier  (cost=0.14..15.98 rows=100 width=4) (actual time=0.040..0.596 rows=56 loops=1)
                                   Buffers: shared hit=55 read=1
                     ->  Hash  (cost=54238.74..54238.74 rows=296464 width=40) (actual time=894.823..894.823 rows=295876 loops=1)
                           Buckets: 524288  Batches: 1  Memory Usage: 25500kB
                           Buffers: shared hit=7690 read=33723
                           ->  Bitmap Heap Scan on part  (cost=5732.74..54238.74 rows=296464 width=40) (actual time=68.546..748.994 rows=295876 loops=1)
                                 Recheck Cond: (p_size = ANY ('{37,19,22,31,34,20,1,15}'::integer[]))
                                 Filter: ((p_brand <> 'Brand#21'::bpchar) AND ((p_type)::text !~~ 'STANDARD PLATED%'::text))
                                 Rows Removed by Filter: 23013
                                 Heap Blocks: exact=40516
                                 Buffers: shared hit=7690 read=33723
                                 ->  Bitmap Index Scan on part_p_size_idx  (cost=0.00..5658.63 rows=319360 width=0) (actual time=59.628..59.628 rows=318889 loops=1)
                                       Index Cond: (p_size = ANY ('{37,19,22,31,34,20,1,15}'::integer[]))
                                       Buffers: shared hit=8 read=889
 Planning time: 3.951 ms
 Execution time: 10864.639 ms
(35 rows)

COMMIT;
COMMIT