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2.Ö÷¼üCLASSID²»ÊÇ×ÔÔöµÄ£¬Ê¹ÓÃCODESMITHÅúÁ¿Éú³É¶à²ã¼Ü¹¹´úÂëÖлᵼÖ³ö´í¡£
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[ArticleClass]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[ArticleClass]
GO
CREATE TABLE [dbo].[ArticleClass] (
 [ClassID] [int]  IDENTITY (1, 1) NOT NULL ,--Ö÷¼ü£¨×¢£º·Ç±êʶ£©
 [ClassName] [nvarchar] (50) COLLATE Chinese_Taiwan_Stroke_CI_AS NOT NULL,--·ÖÀàÃû³Æ
 [ParentID] [int] NOT NULL ,--¸¸·ÖÀàID£¨Ä¬ÈÏÖµ0£©
 [ClassPath] [nvarchar] (1000) COLLATE Chinese_Taiwan_Stroke_CI_AS NOT NULL ,--·ÖÀà·¾¶
 [ClassDepth] [int] NOT NULL ,--·ÖÀàÉî¶È(ĬÈÏÖµ0£©
 [ClassOrder] [int] NOT NULL ,--·ÖÅÅÐò(ĬÈÏÖµ0)
 [ClassDescription] [nvarchar] (1000) COLLATE Chinese_Taiwan_Stroke_CI_AS NULL ,--·ÖÀà˵Ã÷
 [iSystem] [int] NULL --ÊÇ·ñÊÇϵͳĬÈÏ·ÖÀà
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[ArticleClass] ADD
 CONSTRAINT [DF_ArticleClass_ParentID] DEFAULT (0) FOR [ParentID],
 CONSTRAINT [DF_ArticleClass_ClassDepth] DEFAULT (0) FOR [ClassDepth],
 CONSTRAINT [DF_ArticleClass_ClassOrder] DEFAULT (0) FOR [ClassOrder],
 CONSTRAINT [DF_ArticleClass_iSystem] DEFAULT (0) FOR [iSystem],
 CONSTRAINT [PK_ArticleClass] PRIMARY KEY  CLUSTERED
 (
 [ClassID]
 )  ON [PRIMARY]
GO
exec sp_addextendedproperty N'MS_Description', N'Ö÷¼ü£¨·Ç±êʶ£©', N'user', N'dbo', N'table', N'ArticleClass', N'column', N'ClassID'
GO
exec sp_addextendedproperty N'MS_Description', N'·ÖÀàÃû³Æ', N'user', N'dbo', N'table', N'ArticleClass', N'column', N'ClassName'
GO
exec sp_addextendedproperty N'MS_Description', N'¸¸·ÖÀàID', N'user', N'dbo', N'table', N'ArticleClass', N'column', N'ParentID'
GO
exec sp_addextendedproperty N'MS_Description', N'·ÖÀà·¾¶', N'user', N'dbo', N'table', N'ArticleClass', N'column', N'ClassPath'
GO
exec sp_addextendedpr


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