Intersection_set_set Intersection_set_value Intersection_span_span Intersection_span_value Intersection_value_set Intersection_value_span Minus_set_set Minus_set_value Minus_span_span Minus_span_value Minus_value_set Minus_value_span Union_set_set Union_set_value Union_span_span Union_span_value Union_value_set Union_value_span

Union_span_span() PGDLLEXPORT Datum Union_span_span ( PG_FUNCTION_ARGS  ) Return the union of the spans. SQL Function: time_union() SQL Operator: +