/*

视图显示源表按某种规则聚合的数据，为分页显示，需要在视图中添加int的列标识 .
示例中源表数据按日期聚合，字段包括varchar,datetime,int三种类型.

*/

/*基础表结构*/

/****** Object: Table [dbo].[T_UsageTrack] Script Date: 2005-09-29 ******/
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[T_UsageTrack]') and OBJECTPROPERTY(id,N'IsUserTable') = 1) drop table [dbo].[T_UsageTrack]
GO
CREATE TABLE [dbo].[T_UsageTrack] (
[RID] int IDENTITY(1,1) NOT NULL PRIMARY KEY CLUSTERED,
[VisiteDate] [datetime] NOT NULL DEFAULT(Convert(varchar(10),getDate(),21)),
[ArticleID] varchar(10) NOT NULL,
[ArticleTitle] varchar(200) NOT NULL,
[Visitor] varchar(100) NOT NULL,
[VisiteTime] varchar(8) NOT NULL DEFAULT(Convert(varchar(8),8))
)

GO

/*创建视图并添加标识列RID*/

/****** Object: View dbo.V_UsageTrack Script Date: 2005-10-10 下午 15:35:02 ******/
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[V_UsageTrack]') and OBJECTPROPERTY(id,N'IsView') = 1)
drop view [dbo].[V_UsageTrack]
GO
CREATE VIEW [dbo].[V_UsageTrack] AS
Select TOP 100 PERCENT
RID=(Select Count(1) From
(Select VisiteDate,ArticleID
From T_UsageTrack
Where VisiteDate<a.VisiteDate
Or (VisiteDate=a.VisiteDate And (ArticleID<a.ArticleID
Or (ArticleID=A.ArticleID And ArticleTitle<=A.ArticleTitle)
)
)
Group By VisiteDate,ArticleID,ArticleTitle
)
AA ),VisiteDate,ArticleTitle,Count(RID) As Num
From T_UsageTrack a
Group By VisiteDate,ArticleTitle
Order By VisiteDate Desc

GO