Set_extent_transfn Set_union_finalfn Set_union_transfn Span_extent_combinefn Span_extent_transfn Span_union_finalfn Spanbase_extent_transfn Spanset_extent_transfn Spanset_union_transfn Value_union_transfn

Span_union_finalfn() Datum Span_union_finalfn ( PG_FUNCTION_ARGS  ) Final function for union aggregation of spans. Note Shared for both spans and span sets @sqlfn union()