bigint_extent_transfn bigint_union_transfn date_extent_transfn date_union_transfn float_extent_transfn float_union_transfn int_extent_transfn int_union_transfn set_extent_transfn set_union_finalfn set_union_transfn span_extent_transfn span_union_transfn spanset_extent_transfn spanset_union_finalfn spanset_union_transfn text_union_transfn timestamptz_extent_transfn timestamptz_union_transfn

set_union_transfn() Set * set_union_transfn ( Set *  state, Set *  s  ) Transition function for set union aggregate of sets. Parameters [in,out] state Current aggregate state [in] s Set to aggregate Returns When the state variable has space for adding the new set, the function returns the current state variable. Otherwise, a NEW state variable is returned and the input state is freed. Note Always use the function to overwrite the existing state as in: state = set_union_transfn(state, set);