datum_sum_int32 ensure_same_timetype_skiplist period_tagg period_tagg_transfn periodset_tagg_transfn time_tagg_combinefn timestamp_tagg tstzset_tagg_transfn

datum_sum_int32() Datum datum_sum_int32 ( Datum  l, Datum  r  ) Aggregate functions for time types. Return the sum of the two arguments