Question

我有以下观点：

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO



ALTER VIEW [dbo].[RateAverageValueView] WITH SCHEMABINDING
AS
    SELECT 
        Id = NEWID(),
        AverageRateValue = AVG(Value) 
    FROM dbo.Rate


GO

但我无法将其添加到EF模型（edmx文件）我知道它应该有一个主键列，所以我添加了Id = NEWID()，但它不起作用。
有什么问题？

在Visual Studio的警告部分中列出了以下错误：
警告：

Error 6013: The table/view 'YoutubeLinks.dbo.RateAverageValueView' does not have a primary key defined and no valid primary key could be inferred. This table/view has been excluded. To use the entity, you will need to review your schema, add the correct keys, and uncomment it.

Answer 1

创建视图时使用SCHEMABINDING，这将允许添加PK，如上一个答案中所述：How do you add a primary key to a sql view? - Or alternate way to link views to LINQ-2-Entities

Answer 2

我将视图更改为以下内容：

SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO



ALTER VIEW [dbo].[RateAverageValueView] WITH SCHEMABINDING
AS
    SELECT 
        Id = 1,
        AverageRateValue = AVG(Value) 
    FROM dbo.Rate


GO

问题解决了：）

添加视图到EntityFramework 6不起作用？

2 个答案: