datum_sum_int32 ensure_same_timetype_skiplist period_tagg period_tcount_transfn period_transform_tcount period_tunion_finalfn period_tunion_transfn periodset_tcount_transfn periodset_transform_tcount periodset_tunion_transfn time_tagg_combinefn timestamp_tagg timestamp_tcount_transfn timestamp_transform_tcount timestamp_tunion_finalfn timestamp_tunion_transfn tstzset_tcount_transfn tstzset_transform_tcount tstzset_tunion_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