Can't Add A View to EF Data Model

Question

I have a view that I am trying to add to my ADO.NET Entity Data Model. Every time I try to Update From Database, and check the view, it refreshes everything else, but does not add the view. I get no error message or output, so I have no idea what is wrong with the view.Other views are no problem.Am I missing something, is there a way to turn error messages on? visual studio 2008 sp1

Update : I found this link but the problem didn't solved with these solutions. MSDN Forum

Update: The view that i can't add it will query from another view.

Update: Help

WITH cte AS (SELECT     dbo.TBL_Gharardad.PK_Shenase, dbo.TBL_Gharardad.FK_NoeKhedmat AS NoeKhedmatId, 
                                                    dbo.TBL_NoeKhedmat.NoeKhedmat AS [نوع خدمت], dbo.TBL_Gharardad.OnvaneKhedmat AS [عنوان خدمت], 
                                                    dbo.TBL_Gharardad.MahaleEraeieKhedmat AS [محل ارائه خدمت], 
                                                    dbo.TBL_Gharardad.FK_NahveieTaieeneBarande AS NahveieTaeeneBararndeId, 
                                                    dbo.TBL_NahveieTaieeneBarande.NahveieTaieeneBarande AS [نحوه تعيين برنده], 
                                                    dbo.TBL_Gharardad.TarikheShorooeGharardad_Jalali AS [تاريخ شروع قرارداد], 
                                                    dbo.TBL_Gharardad.TarikhePayaneGharardad_Jalali AS [تاريخ پايان قرارداد], dbo.TBL_Gharardad.FK_VahedeArz AS VahedeArzId, 
                                                    dbo.TBL_VahedeArz.VahedeArz AS [واحد ارز], dbo.TBL_Gharardad.MablagheDariaftiKol AS [مبلغ دريافتي کل], 
                                                    dbo.TBL_Gharardad.MablaghePardakhtieKol AS [مبلغ پرداختي کل], dbo.TBL_Gharardad.SahmeKarfarma AS [درصد مشارکت کارفرما], 
                                                    100 - dbo.TBL_Gharardad.SahmeKarfarma AS [درصد مشارکت پيمانکار], dbo.TBL_Gharardad.TedadNirooyeMard AS [تعداد نيروي مرد], 
                                                    dbo.TBL_Gharardad.TedadNirooyeZan AS [تعداد نيروي زن], 
                                                    dbo.TBL_Gharardad.TedadNirooyeMard + dbo.TBL_Gharardad.TedadNirooyeZan AS [تعداد کل نيروها], 
                                                    dbo.TBL_Gharardad.FK_TarafeGharardad AS TarafeGharardadId, 
                                                    CASE TBL_TarafeGharardad.Hoghooghi WHEN 0 THEN ISNULL(TBL_TarafeGharardad.Naam, ' ') 
                                                    + ' ' + ISNULL(TBL_TarafeGharardad.NaameKhanevadegi, ' ') ELSE TBL_TarafeGharardad.NameSherkat END AS [طرف قرارداد], 
                                                    dbo.TBL_Gharardad.FK_VahedeVagozarKonande AS VahedeVagozarKonandeId, 
                                                    dbo.TBL_VahedeVagozarKonande.VahedeVagozarKonande AS [واحد واگذار کننده], dbo.TBL_Gharardad.ShomareGharardad AS [شماره قرارداد], 
                                                    dbo.TBL_Gharardad.TarikheGharardad_Jalali AS [تاريخ قرارداد], 
                                                    CASE VaziateGharardad WHEN 0 THEN N'لغو شده' WHEN 1 THEN N'ثبت اوليه' WHEN 2 THEN N'فسخ' WHEN 3 THEN N'ثبت نهايي ' WHEN 4 THEN
                                                     N' جاري ' WHEN 5 THEN N'تمام شده ' WHEN 6 THEN N' متمم ' END AS [وضعيت قرارداد], dbo.TBL_NoeMoamele.NoeMoamele AS [نوع معامله]
                             FROM          dbo.TBL_Gharardad INNER JOIN
                                                    dbo.TBL_NoeKhedmat ON dbo.TBL_Gharardad.FK_NoeKhedmat = dbo.TBL_NoeKhedmat.PK_Id INNER JOIN
                                                    dbo.TBL_NahveieTaieeneBarande ON 
                                                    dbo.TBL_Gharardad.FK_NahveieTaieeneBarande = dbo.TBL_NahveieTaieeneBarande.PK_Id INNER JOIN
                                                    dbo.TBL_VahedeArz ON dbo.TBL_Gharardad.FK_VahedeArz = dbo.TBL_VahedeArz.PK_Id INNER JOIN
                                                    dbo.TBL_TarafeGharardad ON dbo.TBL_Gharardad.FK_TarafeGharardad = dbo.TBL_TarafeGharardad.PK_Id INNER JOIN
                                                    dbo.TBL_VahedeVagozarKonande ON 
                                                    dbo.TBL_Gharardad.FK_VahedeVagozarKonande = dbo.TBL_VahedeVagozarKonande.PK_Id INNER JOIN
                                                    dbo.TBL_NoeMoamele ON dbo.TBL_Gharardad.FK_NoeMoamele = dbo.TBL_NoeMoamele.PK_Id)
    SELECT     v_Gharardad.شناسه, v_Gharardad.NoeKhedmatId, v_Gharardad.[نوع خدمت], v_Gharardad.[عنوان خدمت], v_Gharardad.[محل ارائه خدمت], 
                            v_Gharardad.NahveieTaeeneBararndeId, v_Gharardad.[نحوه تعيين برنده], v_Gharardad.[تاريخ شروع قرارداد], v_Gharardad.[تاريخ پايان قرارداد], 
                            v_Gharardad.VahedeArzId, v_Gharardad.[واحد ارز], v_Gharardad.[مبلغ دريافتي کل], v_Gharardad.[مبلغ پرداختي کل], v_Gharardad.[درصد مشارکت کارفرما], 
                            v_Gharardad.[درصد مشارکت پيمانکار], v_Gharardad.[تعداد نيروي مرد], v_Gharardad.[تعداد نيروي زن], v_Gharardad.[تعداد کل نيروها], 
                            v_Gharardad.TarafeGharardadId, v_Gharardad.[طرف قرارداد], v_Gharardad.VahedeVagozarKonandeId, v_Gharardad.[واحد واگذار کننده], 
                            v_Gharardad.[شماره قرارداد], v_Gharardad.[تاريخ قرارداد], v_Gharardad.[وضعيت قرارداد], v_Gharardad.[نوع معامله]
     FROM         dbo.TBL_Gharardad AS TBL_Gharardad_3 INNER JOIN
                            dbo.v_GharardadRecords AS v_Gharardad ON v_Gharardad.شناسه = TBL_Gharardad_3.PK_Shenase
     WHERE     (TBL_Gharardad_3.FK_GharardadeAsli IS NULL) AND (TBL_Gharardad_3.PK_Shenase NOT IN
                                (SELECT     FK_GharardadeAsli
                                   FROM         dbo.TBL_Gharardad AS TBL_Gharardad_2
                                   WHERE     (FK_GharardadeAsli IS NOT NULL)))
UNION
SELECT     sub.FK_GharardadeAsli AS شناسه, cte_2.NoeKhedmatId, cte_2.[نوع خدمت], cte_2.[عنوان خدمت], cte_2.[محل ارائه خدمت], cte_2.NahveieTaeeneBararndeId, 
                      cte_2.[نحوه تعيين برنده], cte_2.[تاريخ شروع قرارداد], cte_2.[تاريخ پايان قرارداد], cte_2.VahedeArzId, cte_2.[واحد ارز], cte_2.[مبلغ دريافتي کل], cte_2.[مبلغ پرداختي کل], 
                      cte_2.[درصد مشارکت کارفرما], cte_2.[درصد مشارکت پيمانکار], cte_2.[تعداد نيروي مرد], cte_2.[تعداد نيروي زن], cte_2.[تعداد کل نيروها], cte_2.TarafeGharardadId, 
                      cte_2.[طرف قرارداد], cte_2.VahedeVagozarKonandeId, cte_2.[واحد واگذار کننده], cte_2.[شماره قرارداد], cte_2.[تاريخ قرارداد], cte_2.[وضعيت قرارداد], 
                      cte_2.[نوع معامله]
FROM         dbo.v_GharardadRecords AS cte_2 INNER JOIN
                          (SELECT     FK_GharardadeAsli, MAX(PK_Shenase) AS PK_Shenase, MAX(TarikheSabt) AS TarikheSabt
                             FROM         dbo.TBL_Gharardad AS TBL_Gharardad_1
                             WHERE     (FK_GharardadeAsli IS NOT NULL)
                             GROUP BY FK_GharardadeAsli) AS sub ON sub.PK_Shenase = cte_2.شناسه

Answer 1

If your view does not contain the primary key column,then it wont add to edmx file.

Answer 2

In my case it was because of an OUTER JOIN.
That causes the columns to be nullable and can't be imported by EF.

When I changed it to INNER JOIN it worked.

Another way is to use ISNULL (see the answer to this post)

Answer 3

Check if your View is for sure View in *.edmx file.

Correct:

<EntitySet Name="SomeView" EntityType="Model.SomeView" store:Type="Views" Schema="dbo" />

Wrong:

<EntitySet Name="SomeView" EntityType="Model.SomeView" store:Type="Tables" Schema="dbo" />

Answer 4

You can add a rowcount to the view and make it look like a key "Id" field that is not null. An example:-

SELECT DISTINCT
     -- dumb key for EF in C#
     IsNull(cast(ROW_NUMBER() OVER(PARTITION BY [Notes] ORDER BY [Notes] ASC) as int), 0) as [Id]

     -- required fields
    ,[Notes]        as [Notes]
    ,Count([Notes]) as [NoteCount]
FROM
    [dbo].[Communication]
GROUP BY
    [Notes]

Answer 5

Same issue here, what I did was to add the PrimaryKey on the View, using :

..... (SELECT      TOP (100) PERCENT ROW_NUMBER() OVER (ORDER BY R.Road DESC) AS RoadNumber......

And then I had to do a CAST of this :

ISNULL (CAST(RoadNumber AS INT),0)AS RoadNumber

The column must be (not null), that's why the CAST at the end.

Answer 6

To be able to add a view into a model, Entity Framework needs at least one column in database view to be not nullable.