Hash Join  (cost=270.02..38855.25 rows=10001 width=16)
   Hash Cond: (parts.a = t0.a)
   ->  Append  (cost=0.00..34735.22 rows=1000000 width=8)
         ->  Seq Scan on part_0 parts_1  (cost=0.00..3600.89 rows=249589 width=8)
         ->  Foreign Scan on part_1 parts_2  (cost=100.00..8719.28 rows=250376 width=8)
         ->  Foreign Scan on part_2 parts_3  (cost=100.00..8699.58 rows=249786 width=8)
         ->  Foreign Scan on part_3 parts_4  (cost=100.00..8715.47 rows=250249 width=8)
   ->  Hash  (cost=145.01..145.01 rows=10001 width=8)
         ->  Seq Scan on t0  (cost=0.00..145.01 rows=10001 width=8)
