§12-952.

§12-952.
   
   (a) The Supreme Court may reverse, vacate or modify judgments of the
   district court for errors appearing on the record, and in the reversal
   of such judgment may reverse, vacate or modify any intermediate order
   involving the merits of the action, or any portion thereof.
   
   (b) The Supreme Court may reverse, vacate or modify any of the
   following orders of the district court, or a judge thereof:
   
   1. A final order;
   
   2. An order that discharges, vacates or modifies or refuses to vacate
   or modify a provisional remedy which affects the substantial rights of
   a party; or grants, refuses, vacates, modifies or refuses to vacate or
   modify an injunction; grants or refuses a new trial; or vacates or
   refuses to vacate a final judgment;
   
   3. Any other order, which affects a substantial part of the merits of
   the controversy when the trial judge certifies that an immediate
   appeal may materially advance the ultimate termination of the
   litigation; provided, however, that the Supreme Court, in its
   discretion, may refuse to hear the appeal. If the Supreme Court
   assumes jurisdiction of the appeal, it shall indicate in its order
   whether the action in the trial court shall be stayed or shall
   continue.
   
   The failure of a party to appeal from an order that is appealable
   under either subdivision 2 or 3 of subsection (b) of this section
   shall not preclude him from asserting error in the order after the
   judgment or final order is rendered.