摘要： 1.选择Northwind 库中，在查询器中运行sql脚本if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[test02]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)drop table [dbo].[test02]GOCREATE TABLE [dbo].[t... 阅读全文