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 = 'INDIA'
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 = 'INDIA'
		)
order by
	value desc;
                                                                                 QUERY PLAN                                                                                 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=130406.23..131205.80 rows=319827 width=12) (actual time=3005.458..3006.397 rows=8440 loops=1)
   Sort Key: (sum((partsupp.ps_supplycost * (partsupp.ps_availqty)::double precision)))
   Sort Method: quicksort  Memory: 780kB
   Buffers: shared hit=556733 read=125970 written=542
   InitPlan 1 (returns $2)
     ->  Aggregate  (cost=46983.42..46983.43 rows=1 width=8) (actual time=615.395..615.395 rows=1 loops=1)
           Buffers: shared hit=340643 read=707
           ->  Nested Loop  (cost=79.73..44584.72 rows=319827 width=8) (actual time=1.049..562.145 rows=326320 loops=1)
                 Buffers: shared hit=340643 read=707
                 ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=4) (actual time=1.019..6.470 rows=4079 loops=1)
                       Buffers: shared hit=1850 read=13
                       ->  Seq Scan on nation nation_1  (cost=0.00..1.31 rows=1 width=4) (actual time=0.006..0.016 rows=1 loops=1)
                             Filter: (n_name = 'INDIA'::bpchar)
                             Rows Removed by Filter: 24
                             Buffers: shared hit=1
                       ->  Bitmap Heap Scan on supplier supplier_1  (cost=79.29..2350.29 rows=4000 width=8) (actual time=1.006..5.700 rows=4079 loops=1)
                             Recheck Cond: (s_nationkey = nation_1.n_nationkey)
                             Heap Blocks: exact=1849
                             Buffers: shared hit=1849 read=13
                             ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=0.740..0.740 rows=4079 loops=1)
                                   Index Cond: (s_nationkey = nation_1.n_nationkey)
                                   Buffers: shared read=13
                 ->  Index Scan using partsupp_ps_suppkey_idx on partsupp partsupp_1  (cost=0.43..9.75 rows=80 width=12) (actual time=0.007..0.123 rows=80 loops=4079)
                       Index Cond: (ps_suppkey = supplier_1.s_suppkey)
                       Buffers: shared hit=338793 read=694
   ->  HashAggregate  (cost=50181.69..54179.53 rows=319827 width=12) (actual time=2929.132..3000.880 rows=8440 loops=1)
         Group Key: partsupp.ps_partkey
         Filter: (sum((partsupp.ps_supplycost * (partsupp.ps_availqty)::double precision)) > $2)
         Rows Removed by Filter: 298525
         Buffers: shared hit=556730 read=125970 written=542
         ->  Nested Loop  (cost=79.73..44584.72 rows=319827 width=12) (actual time=1.335..2093.517 rows=326320 loops=1)
               Buffers: shared hit=216087 read=125263 written=542
               ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=4) (actual time=1.285..29.233 rows=4079 loops=1)
                     Buffers: shared hit=29 read=1834 written=15
                     ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.011..0.023 rows=1 loops=1)
                           Filter: (n_name = 'INDIA'::bpchar)
                           Rows Removed by Filter: 24
                           Buffers: shared hit=1
                     ->  Bitmap Heap Scan on supplier  (cost=79.29..2350.29 rows=4000 width=8) (actual time=1.264..27.959 rows=4079 loops=1)
                           Recheck Cond: (s_nationkey = nation.n_nationkey)
                           Heap Blocks: exact=1849
                           Buffers: shared hit=28 read=1834 written=15
                           ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=0.989..0.989 rows=4079 loops=1)
                                 Index Cond: (s_nationkey = nation.n_nationkey)
                                 Buffers: shared read=13 written=1
               ->  Index Scan using partsupp_ps_suppkey_idx on partsupp  (cost=0.43..9.75 rows=80 width=16) (actual time=0.020..0.487 rows=80 loops=4079)
                     Index Cond: (ps_suppkey = supplier.s_suppkey)
                     Buffers: shared hit=216058 read=123429 written=527
 Planning time: 3.002 ms
 Execution time: 3011.704 ms
(50 rows)

COMMIT;
COMMIT