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 = 'MOROCCO'
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 = 'MOROCCO'
		)
order by
	value desc;
                                                                                 QUERY PLAN                                                                                 
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=135989.60..136789.60 rows=320000 width=12) (actual time=5273.559..5275.137 rows=9522 loops=1)
   Sort Key: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)))
   Sort Method: quicksort  Memory: 831kB
   Buffers: shared hit=572047 read=95911 written=49
   InitPlan 1 (returns $2)
     ->  Aggregate  (cost=49764.62..49764.64 rows=1 width=8) (actual time=1366.845..1366.845 rows=1 loops=1)
           Buffers: shared hit=333976 read=1
           ->  Nested Loop  (cost=79.26..47364.62 rows=320000 width=8) (actual time=3.975..1248.365 rows=319200 loops=1)
                 Buffers: shared hit=333976 read=1
                 ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.493..13.975 rows=3990 loops=1)
                       Buffers: shared hit=1867
                       ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.014..0.022 rows=1 loops=1)
                             Filter: (n_name = 'MOROCCO'::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=1.468..12.329 rows=3990 loops=1)
                             Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                             Buffers: shared hit=1866
                             ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.081..1.081 rows=3990 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=0.017..0.282 rows=80 loops=3990)
                       Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                       Buffers: shared hit=332109 read=1
   ->  HashAggregate  (cost=52964.62..56964.62 rows=320000 width=12) (actual time=5101.472..5264.913 rows=9522 loops=1)
         Filter: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)) > $2)
         Rows Removed by Filter: 290808
         Buffers: shared hit=572044 read=95911 written=49
         ->  Nested Loop  (cost=79.26..47364.62 rows=320000 width=12) (actual time=1.348..3287.453 rows=319200 loops=1)
               Buffers: shared hit=238068 read=95910 written=49
               ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=4) (actual time=1.308..27.068 rows=3990 loops=1)
                     Buffers: shared hit=1854 read=14
                     ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.017..0.030 rows=1 loops=1)
                           Filter: (n_name = 'MOROCCO'::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=1.283..25.040 rows=3990 loops=1)
                           Recheck Cond: (s_nationkey = public.nation.n_nationkey)
                           Buffers: shared hit=1853 read=14
                           ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=0.971..0.971 rows=3990 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=0.040..0.785 rows=80 loops=3990)
                     Index Cond: (ps_suppkey = public.supplier.s_suppkey)
                     Buffers: shared hit=236214 read=95896 written=49
 Total runtime: 5284.355 ms
(46 rows)

COMMIT;
COMMIT