我只知道什么create proc FormatGrid
As
select * from ---SQL语句
但是下面我都不知道是什么意思??
就是什么判断if exists.....if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FormatGrid]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[FormatGrid]
GOCREATE TABLE [dbo].[FormatGrid] (
[UserID] [int] NULL ,
[Degree] [int] NULL ,
[Gender] [int] NULL ,
[MaritalStatus] [int] NULL ,
[Description] [nvarchar] (500) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
As
select * from ---SQL语句
但是下面我都不知道是什么意思??
就是什么判断if exists.....if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FormatGrid]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[FormatGrid]
GOCREATE TABLE [dbo].[FormatGrid] (
[UserID] [int] NULL ,
[Degree] [int] NULL ,
[Gender] [int] NULL ,
[MaritalStatus] [int] NULL ,
[Description] [nvarchar] (500) COLLATE Chinese_PRC_CI_AS NULL
) ON [PRIMARY]
GO
那么就删除
再建立新表
特别是:
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[FormatGrid]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[FormatGrid]
好象很难看懂似的!!
那里有这方面的资料介绍下?