text: ﻿CREATE TABLE [dbo].[Node] (
      [NODE_ID] INT             NOT NULL,
      [X]       DECIMAL (9, 7)  NOT NULL,
      [Y]       DECIMAL (9, 7)  NOT NULL,
      [Z]       DECIMAL (10, 2) NULL,
      PRIMARY KEY CLUSTERED ([NODE_ID] ASC),
      CONSTRAINT [CHK_zero] CHECK ([X]<>(0) AND [Y]<>(0))
  );
  
  