datum_sum_int32 ensure_same_timetype_skiplist period_tagg period_tagg_transfn periodset_tagg_transfn time_tagg_combinefn timestamp_tagg tstzset_tagg_transfn

time_tagg_combinefn() SkipList * time_tagg_combinefn ( SkipList *  state1, SkipList *  state2  ) Generic combine function for temporal aggregate of time values. Parameters [in] state1,state2 State values