distance_bigintset_bigint distance_bigintspan_bigint distance_bigintspanset_bigint distance_floatset_float distance_floatspan_float distance_floatspanset_float distance_intset_int distance_intspan_int distance_intspanset_int distance_period_timestamp distance_periodset_timestamp distance_set_set distance_span_span distance_spanset_span distance_spanset_spanset distance_textset_text distance_timestampset_timestamp

distance_span_span() double distance_span_span ( const Span *  s1, const Span *  s2  ) Return the distance between two spans. SQL Operator: <->