Tbox_hast Tbox_hasx Tbox_tmax Tbox_tmax_inc Tbox_tmin Tbox_tmin_inc Tbox_xmax Tbox_xmax_inc Tbox_xmin Tbox_xmin_inc

Tbox_hasx() Datum Tbox_hasx ( PG_FUNCTION_ARGS  ) Return true if a temporal box has value dimension @sqlfn hasX()