Tbox_expand_time Tbox_expand_value Tbox_round Tbox_scale_time Tbox_scale_value Tbox_shift_scale_time Tbox_shift_scale_value Tbox_shift_time Tbox_shift_value

Tbox_expand_value() Datum Tbox_expand_value ( PG_FUNCTION_ARGS  ) Return a temporal box with the value span expanded by a value @sqlfn expandValue()