BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	ps_partkey,
	sum(ps_supplycost * ps_availqty) as value
from
	partsupp,
	supplier,
	nation
where
	ps_suppkey = s_suppkey
	and s_nationkey = n_nationkey
	and n_name = 'RUSSIA'
group by
	ps_partkey having
		sum(ps_supplycost * ps_availqty) > (
			select
				sum(ps_supplycost * ps_availqty) * 0.0000100000
			from
				partsupp,
				supplier,
				nation
			where
				ps_suppkey = s_suppkey
				and s_nationkey = n_nationkey
				and n_name = 'RUSSIA'
		)
order by
	value desc;
                                                                                 QUERY PLAN                                                                                 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=135989.60..136789.60 rows=320000 width=12) (actual time=4044.982..4046.108 rows=9062 loops=1)
   Sort Key: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)))
   Sort Method: quicksort  Memory: 809kB
   Buffers: shared hit=663261 read=9747
   InitPlan 1 (returns $2)
     ->  Aggregate  (cost=49764.62..49764.64 rows=1 width=8) (actual time=1325.125..1325.125 rows=1 loops=1)
           Buffers: shared hit=336502
           ->  Nested Loop  (cost=79.26..47364.62 rows=320000 width=8) (actual time=1.421..1211.834 rows=321680 loops=1)
                 Buffers: shared hit=336502
                 ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.389..13.478 rows=4021 loops=1)
                       Buffers: shared hit=1862
                       ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.015..0.020 rows=1 loops=1)
                             Filter: (n_name = 'RUSSIA'::bpchar)
                             Rows Removed by Filter: 24
                             Buffers: shared hit=1
                       ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=8) (actual time=1.363..11.835 rows=4021 loops=1)
                             Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                             Buffers: shared hit=1861
                             ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.001..1.001 rows=4021 loops=1)
                                   Index Cond: (s_nationkey = public.nation.n_nationkey)
                                   Buffers: shared hit=13
                 ->  Index Scan using partsupp_ps_suppkey_idx on partsupp  (cost=0.00..10.44 rows=80 width=12) (actual time=0.016..0.272 rows=80 loops=4021)
                       Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                       Buffers: shared hit=334640
   ->  HashAggregate  (cost=52964.62..56964.62 rows=320000 width=12) (actual time=3913.112..4039.448 rows=9062 loops=1)
         Filter: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)) > $2)
         Rows Removed by Filter: 293861
         Buffers: shared hit=663258 read=9747
         ->  Nested Loop  (cost=79.26..47364.62 rows=320000 width=12) (actual time=1.912..2152.566 rows=321680 loops=1)
               Buffers: shared hit=326756 read=9747
               ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.832..26.101 rows=4021 loops=1)
                     Buffers: shared hit=1851 read=12
                     ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.024..0.033 rows=1 loops=1)
                           Filter: (n_name = 'RUSSIA'::bpchar)
                           Rows Removed by Filter: 24
                           Buffers: shared hit=1
                     ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=8) (actual time=1.798..24.162 rows=4021 loops=1)
                           Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                           Buffers: shared hit=1850 read=12
                           ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.427..1.427 rows=4021 loops=1)
                                 Index Cond: (s_nationkey = public.nation.n_nationkey)
                                 Buffers: shared hit=2 read=12
               ->  Index Scan using partsupp_ps_suppkey_idx on partsupp  (cost=0.00..10.44 rows=80 width=16) (actual time=0.038..0.496 rows=80 loops=4021)
                     Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                     Buffers: shared hit=324905 read=9735
 Total runtime: 4054.278 ms
(46 rows)

COMMIT;
COMMIT