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 = 'SAUDI ARABIA'
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 = 'SAUDI ARABIA'
		)
order by
	value desc;
                                                                                 QUERY PLAN                                                                                 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=135982.89..136782.77 rows=319952 width=12) (actual time=4804.811..4806.333 rows=9241 loops=1)
   Sort Key: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)))
   Sort Method: quicksort  Memory: 818kB
   Buffers: shared hit=670079 read=1191
   InitPlan 1 (returns $2)
     ->  Aggregate  (cost=49764.18..49764.19 rows=1 width=8) (actual time=1796.975..1796.975 rows=1 loops=1)
           Buffers: shared hit=335506 read=127
           ->  Nested Loop  (cost=79.26..47364.54 rows=319952 width=8) (actual time=1.451..1677.782 rows=320800 loops=1)
                 Buffers: shared hit=335506 read=127
                 ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.421..20.393 rows=4010 loops=1)
                       Buffers: shared hit=1855
                       ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.016..0.023 rows=1 loops=1)
                             Filter: (n_name = 'SAUDI ARABIA'::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=1.394..18.681 rows=4010 loops=1)
                             Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                             Buffers: shared hit=1854
                             ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.018..1.018 rows=4010 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=0.023..0.385 rows=80 loops=4010)
                       Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                       Buffers: shared hit=333651 read=127
   ->  HashAggregate  (cost=52963.70..56963.10 rows=319952 width=12) (actual time=4653.741..4796.715 rows=9241 loops=1)
         Filter: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)) > $2)
         Rows Removed by Filter: 292592
         Buffers: shared hit=670076 read=1191
         ->  Nested Loop  (cost=79.26..47364.54 rows=319952 width=12) (actual time=1.449..2255.060 rows=320800 loops=1)
               Buffers: shared hit=334570 read=1064
               ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.362..30.586 rows=4010 loops=1)
                     Buffers: shared hit=1842 read=14
                     ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.017..0.031 rows=1 loops=1)
                           Filter: (n_name = 'SAUDI ARABIA'::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=1.336..28.641 rows=4010 loops=1)
                           Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                           Buffers: shared hit=1841 read=14
                           ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=0.985..0.985 rows=4010 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=0.035..0.523 rows=80 loops=4010)
                     Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                     Buffers: shared hit=332728 read=1050
 Total runtime: 4818.182 ms
(46 rows)

COMMIT;
COMMIT