text: USE [NuScien5]
  GO
  
  IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[testcustomers]') AND type in (N'U'))
  DROP TABLE [dbo].[testcustomers]
  GO
  
  IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[testgoods]') AND type in (N'U'))
  DROP TABLE [dbo].testgoods
  GO
  