BEGIN; BEGIN EXPLAIN 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 = 'UNITED STATES' 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 = 'UNITED STATES' ) order by value desc; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------- Sort (cost=135982.89..136782.77 rows=319952 width=12) Sort Key: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision))) InitPlan 1 (returns $2) -> Aggregate (cost=49764.18..49764.19 rows=1 width=8) -> Nested Loop (cost=79.26..47364.54 rows=319952 width=8) -> Nested Loop (cost=79.26..2391.58 rows=4000 width=4) -> Seq Scan on nation (cost=0.00..1.31 rows=1 width=4) Filter: (n_name = 'UNITED STATES'::bpchar) -> Bitmap Heap Scan on supplier (cost=79.26..2350.26 rows=4000 width=8) Recheck Cond: (s_nationkey = public.nation.n_nationkey) -> Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx (cost=0.00..78.26 rows=4000 width=0) Index Cond: (s_nationkey = public.nation.n_nationkey) -> Index Scan using partsupp_ps_suppkey_idx on partsupp (cost=0.00..10.44 rows=80 width=12) Index Cond: (ps_suppkey = public.supplier.s_suppkey) -> HashAggregate (cost=52963.70..56963.10 rows=319952 width=12) Filter: (sum((public.partsupp.ps_supplycost * (public.partsupp.ps_availqty)::double precision)) > $2) -> Nested Loop (cost=79.26..47364.54 rows=319952 width=12) -> Nested Loop (cost=79.26..2391.58 rows=4000 width=4) -> Seq Scan on nation (cost=0.00..1.31 rows=1 width=4) Filter: (n_name = 'UNITED STATES'::bpchar) -> Bitmap Heap Scan on supplier (cost=79.26..2350.26 rows=4000 width=8) Recheck Cond: (s_nationkey = public.nation.n_nationkey) -> Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx (cost=0.00..78.26 rows=4000 width=0) Index Cond: (s_nationkey = public.nation.n_nationkey) -> Index Scan using partsupp_ps_suppkey_idx on partsupp (cost=0.00..10.44 rows=80 width=16) Index Cond: (ps_suppkey = public.supplier.s_suppkey) (26 rows) COMMIT; COMMIT