Upon careful review of the record on appeal we hold this appeal should be dismissed under Rule 54(b) of the North Carolina Rules of Civil Procedure. Rule 54(b) states:
(b) Judgment Upon Multiple Claims or Involving Multiple Parties. When more than one claim for relief is presented in an action, whether as a claim, counterclaim, crossclaim, or third-party claim, or when multiple parties are involved, the court may enter a final judgment as to one or more but fewer than all of the claims or parties only if there is no just reason for delay and it is so determined in the judgment. Such judgment shall then be subject to review by appeal or as otherwise provided by these rules or other statutes. In the absence of entry of such a final judgment, any order or other form of decision, however designated, which adjudicates fewer than all the claims or the rights and liabilities of fewer than all the parties shall not terminate the action as to any of the claims or parties and shall not then be subject to review either by appeal or otherwise except as expressly provided by these rules or other statutes. Similarly, in the absence of entry of such a final judgment, any order or other form of decision is subject to revision at any time before the entry of judgment adjudicating all the claims and the rights and liabilities of all the parties.
The granting of the third-party defendants’ motion for summary judgment, and the denying of third-party plaintiffs motions to compel discovery and add a necessary party, were decisions of the trial judge which adjudicated fewer than all the rights and liabilities of fewer than all the parties. Plaintiffs claim has yet to be heard, so the third-party plaintiffs appeal is interlocutory. Under Rule 54(b),' the judgment and orders may be appealed from only if either (1) the trial judge expressly determines there is no just reason for delaying appeal of his final judgment as to fewer *571than all the parties, or (2) they affect a “substantial right” pursuant to N.C. Gen. Stat. §§ 1-277 and 7A-27.
The summary judgment and orders in the instant case were not certified for appeal since the trial judge did not declare there was no just reason for delay of appeal. Thus the central question becomes whether the trial judge’s orders affected a “substantial right” of third-party plaintiff.
The orders denying third-party plaintiff’s motions to compel discovery and to add Chateau Builders, Inc., as a necessary party do not affect substantial rights because those orders may be challenged after a final judgment on all the claims of all the parties without prejudicing third-party plaintiff’s rights. As our Supreme Court explained in another attempt to appeal an interlocutory order:
Defendant’s rights here are fully and adequately protected by an exception to the order which may then be assigned as error on appeal should final judgment in the case ultimately go against it. All defendant suffers by its inability to appeal Judge Long’s order is the necessity of rehearing its motion. The avoidance of such a rehearing is not a ‘substantial right’ entitling defendant to an immediate appeal.
Waters v. Personnel, Inc., 294 N.C. 200, 208, 240 S.E. 2d 338, 344 (1978). The policy behind declining to review the questions presented by third-party plaintiff at this time is “to prevent fragmentary, premature and unnecessary appeals by permitting the trial divisions to have done with a case fully and finally before it is presented to the appellate division.” Id. at 207, 240 S.E. 2d at 343.
Nor does summary judgment for third-party defendants affect a substantial right of the third-party plaintiff in the case sub judice. The complaint alleges defendant, third-party plaintiff, owes a sum to plaintiff under one contract. The third-party complaint alleges a separate contract placing liability, if any, on the third-party defendants. Consequently, the third-party complaint need not be considered unless and until defendant’s liability to plaintiff is determined, and appellate review of the summary judgment for the third-party defendants would only be an advisory opinion at this time. The procedural context here is similar *572to that of Green v. Duke Power Co., 305 N.C. 603, 607, 290 S.E. 2d 593, 596 (1982), wherein the Court stated,
We hold that no substantial right would be lost by Duke’s [third-party plaintiffs] inability to take an immediate appeal from the summary judgment against it. If Duke [third-party plaintiff] were to win in the principal action, Duke would have no right to appeal. G.S. 1-271 (only an aggrieved party may appeal). If Duke [third-party plaintiff] were to lose, its exception to the entry of summary judgment would fully and adequately preserve its right to thereafter seek contribution.
Furthermore, since the original complaint and the third-party complaint relate to different contracts, there is no danger of different juries rendering inconsistent verdicts on the same factual issue. See Id. at 608, 290 S.E. 2d at 596.
The appeal is dismissed.
Judges WHICHARD and BRASWELL concur.