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

Spanbase_extent_transfn() Datum Spanbase_extent_transfn ( PG_FUNCTION_ARGS  ) Transition function for extent aggregation of span base values @sqlfn extent()