Seq Scan on table1  (cost=10024.60..630494296.45 rows=139636 width=4)
   Filter: (NOT (subplan))
   SubPlan
     ->  Materialize  (cost=10024.60..13890.51 rows=259691 width=4)
           ->  Seq Scan on table2  (cost=0.00..8495.91 rows=259691 width=4)