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=135946.47..136745.68 rows=319684 width=12) (actual time=9690.562..9691.806 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=658566 read=14442
   InitPlan 1 (returns $2)
     ->  Aggregate  (cost=49762.20..49762.21 rows=1 width=8) (actual time=3815.313..3815.313 rows=1 loops=1)
           Buffers: shared hit=335267 read=1235
           ->  Nested Loop  (cost=79.26..47364.57 rows=319684 width=8) (actual time=1.656..3681.906 rows=321680 loops=1)
                 Buffers: shared hit=335267 read=1235
                 ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.623..45.876 rows=4021 loops=1)
                       Buffers: shared hit=1862
                       ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.016..0.021 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=1.597..43.531 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=1.177..1.177 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=0.050..0.874 rows=80 loops=4021)
                       Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                       Buffers: shared hit=333405 read=1235
   ->  HashAggregate  (cost=52959.04..56955.09 rows=319684 width=12) (actual time=9532.923..9684.296 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=658563 read=14442
         ->  Nested Loop  (cost=79.26..47364.57 rows=319684 width=12) (actual time=1.961..5150.757 rows=321680 loops=1)
               Buffers: shared hit=323296 read=13207
               ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.868..56.519 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=0.021..0.034 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=1.837..53.427 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=1.498..1.498 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=0.092..1.227 rows=80 loops=4021)
                     Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                     Buffers: shared hit=321445 read=13195
 Total runtime: 9701.317 ms
(46 rows)

COMMIT;
COMMIT