您所在位置：主题：帮我解释一下这两句话的意思
triumph
[专家分：160] 发布于 2006-08-17 20:37:00
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[人口信息]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[人口信息]
GO
CREATE TABLE [dbo].[人口信息] (
[人口编号] [char] (20) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[姓名] [char] (10) COLLATE Chinese_PRC_CI_AS NULL ,
[性别] [char] (2) COLLATE Chinese_PRC_CI_AS NULL ,
[出生日期] [datetime] NULL ,
[成员代号] [char] (10) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
drop table [dbo].[人口信息]
GO
CREATE TABLE [dbo].[人口信息] (
[人口编号] [char] (20) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[姓名] [char] (10) COLLATE Chinese_PRC_CI_AS NULL ,
[性别] [char] (2) COLLATE Chinese_PRC_CI_AS NULL ,
[出生日期] [datetime] NULL ,
[成员代号] [char] (10) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO