Period_tcount_transfn Period_tunion_finalfn Period_tunion_transfn Periodset_tcount_transfn Periodset_tunion_transfn Time_tunion_combinefn Timestamp_tcount_transfn Timestamp_tunion_finalfn Timestamp_tunion_transfn Tstzset_tcount_transfn Tstzset_tunion_transfn

Period_tunion_transfn() PGDLLEXPORT Datum Period_tunion_transfn ( PG_FUNCTION_ARGS  ) Transition function for union aggregate of periods.