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 = 'FRANCE'
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 = 'FRANCE'
		)
order by
	value desc;
                                                                                 QUERY PLAN                                                                                 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=135989.56..136789.56 rows=320000 width=12) (actual time=6289.522..6290.572 rows=9964 loops=1)
   Sort Key: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)))
   Sort Method: quicksort  Memory: 852kB
   Buffers: shared hit=524601 read=138469 written=790
   InitPlan 1 (returns $2)
     ->  Aggregate  (cost=49764.61..49764.62 rows=1 width=8) (actual time=1376.575..1376.576 rows=1 loops=1)
           Buffers: shared hit=331049 read=484
           ->  Nested Loop  (cost=79.26..47364.61 rows=320000 width=8) (actual time=1.286..1257.676 rows=316880 loops=1)
                 Buffers: shared hit=331049 read=484
                 ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.268..14.995 rows=3961 loops=1)
                       Buffers: shared hit=1830 read=13
                       ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.006..0.017 rows=1 loops=1)
                             Filter: (n_name = 'FRANCE'::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=1.256..13.308 rows=3961 loops=1)
                             Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                             Buffers: shared hit=1829 read=13
                             ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=0.959..0.959 rows=3961 loops=1)
                                   Index Cond: (s_nationkey = public.nation.n_nationkey)
                                   Buffers: shared read=13
                 ->  Index Scan using partsupp_ps_suppkey_idx on partsupp  (cost=0.00..10.44 rows=80 width=12) (actual time=0.017..0.284 rows=80 loops=3961)
                       Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                       Buffers: shared hit=329219 read=471
   ->  HashAggregate  (cost=52964.61..56964.61 rows=320000 width=12) (actual time=6112.733..6281.138 rows=9964 loops=1)
         Filter: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)) > $2)
         Rows Removed by Filter: 288669
         Buffers: shared hit=524598 read=138469 written=790
         ->  Nested Loop  (cost=79.26..47364.61 rows=320000 width=12) (actual time=2.120..4239.608 rows=316880 loops=1)
               Buffers: shared hit=193549 read=137985 written=790
               ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=2.030..29.281 rows=3961 loops=1)
                     Buffers: shared hit=1830 read=14
                     ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.020..0.032 rows=1 loops=1)
                           Filter: (n_name = 'FRANCE'::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=1.999..26.882 rows=3961 loops=1)
                           Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                           Buffers: shared hit=1829 read=14
                           ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.607..1.607 rows=3961 loops=1)
                                 Index Cond: (s_nationkey = public.nation.n_nationkey)
                                 Buffers: shared read=14
               ->  Index Scan using partsupp_ps_suppkey_idx on partsupp  (cost=0.00..10.44 rows=80 width=16) (actual time=0.045..1.030 rows=80 loops=3961)
                     Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                     Buffers: shared hit=191719 read=137971 written=790
 Total runtime: 6299.473 ms
(46 rows)

COMMIT;
COMMIT