test=# explain SELECT *
         FROM    data
         WHERE   payload < -10;
  QUERY PLAN
 ----------------------------------------------------
  Append  (cost=0.00..41.88 rows=850 width=4)
    ->  Seq Scan on negatives  (cost=0.00..41.88 rows=850 width=4)
          Filter: (payload < '-10'::integer)
 (3 rows)