C# 表值函数和实体框架

我试图用实体框架执行一个TVF，但由于某些原因，它就是不起作用。 也许外面的任何人都能帮我解决这个问题

以下是代码示例：

这就是功能：

CREATE FUNCTION [dbo].[udf_profileSearch]
(@keywords NVARCHAR(3000))
RETURNS @results TABLE 
(
    [Id] [int] NULL,
    [SubCategoryId] [int] NULL,
    [UserId] [int] NULL,
    [SmallDescription] [nvarchar](250) NULL,
    [DetailedDescription] [nvarchar](500) NULL,
    [Graduation] [nvarchar](140) NULL,
    [Experience] [nvarchar](500) NULL,
    [IsChat] [bit] NULL,
    [IsEmail] [bit] NULL,
    [MinuteCost] [decimal](18, 2) NOT NULL,
    [TestimonyRate] [int] NULL,
    [TestimonyQuantity] [int] NULL,
    [StatusId] [int] NULL
)

AS
BEGIN
IF(@keywords != '')
    BEGIN
        insert @results
            SELECT p.Id, p.SubCategoryId, p.UserId, p.SmallDescription, p.DetailedDescription, p.Graduation, 
                        p.Experience, p.IsChat, p.IsEmail, p.MinuteCost, p.TestimonyRate, p.TestimonyQuantity, 
                        p.StatusId FROM 
            Profile p inner join ProfileSearchKeyword psk
            ON p.Id = psk.ProfileId
            WHERE CONTAINS(psk.*,@keywords)
    END
ELSE 
    BEGIN
        insert @results
            SELECT p.* FROM 
            Profile p inner join ProfileSearchKeyword psk
            ON p.Id = psk.ProfileId
    END
RETURN
END

ALTER  FUNCTION [dbo].[fn_Car]
(
      @ListToCalc tp_CarList READONLY
)
RETURNS TABLE
AS
    RETURN
    (
        SELECT l.ID
               , l.CarNumber
               , l.ArriveDate
        FROM @ListToCalc l
        INNER JOIN Stations as sf ON sf.ID = l.id_StationFrom
    )

我的DbContext文件（名为EAjudaContext）中有这个

我得到了这个错误：

'eAjudaConnection.udf_profileSearch' cannot be resolved into a valid type or function.

“eAjudaConnection.udf_profileSearch”无法解析为有效的类型或函数。

你知道我遗漏了什么吗？
我几乎尝试了在谷歌上找到的每一个技巧，但没有一个能解决我的问题

如果您需要查看此处未包含的任何代码，请询问，我将添加它。
这是一篇非常好的文章，介绍了Entity Framework的更新功能，这些功能直接支持表值UDF

为了更深入，本文提供了重要的细节

最近支持表值UDF的最大优点之一是支持全文搜索功能。请在此处阅读更多信息：
[已测试]
使用：

为输出结果声明一个类：

public class MyCustomObject
{
   [Key]
   public int Id { get; set; }
   public int Rank { get; set; }
}

在DbContext类中创建一个方法

[DbFunction("MyContextType", "SearchSomething")]
public virtual IQueryable<MyCustomObject> SearchSomething(string keywords)
{
   var keywordsParam = new ObjectParameter("keywords", typeof(string)) 
                           { 
                              Value = keywords 
                            };
    return (this as IObjectContextAdapter).ObjectContext
    .CreateQuery<MyCustomObject>(
     "MyContextType.SearchSomething(@keywords)", keywordsParam);
}

现在你可以打电话/加入
表值函数如下所示：

CREATE FUNCTION SearchSomething
(   
    @keywords nvarchar(4000)
)
RETURNS TABLE 
AS
RETURN 
(SELECT KEY_TBL.RANK AS Rank, Id
FROM MyTable 
LEFT JOIN freetexttable(MyTable , ([MyColumn1],[MyColumn2]), @keywords) AS KEY_TBL      
ON MyTable.Id = KEY_TBL.[KEY]  
WHERE KEY_TBL.RANK > 0   
)
GO

这是一种向函数发送表参数并返回表值函数值的方法

C#：

SQL表值函数：

CREATE FUNCTION [dbo].[udf_profileSearch]
(@keywords NVARCHAR(3000))
RETURNS @results TABLE 
(
    [Id] [int] NULL,
    [SubCategoryId] [int] NULL,
    [UserId] [int] NULL,
    [SmallDescription] [nvarchar](250) NULL,
    [DetailedDescription] [nvarchar](500) NULL,
    [Graduation] [nvarchar](140) NULL,
    [Experience] [nvarchar](500) NULL,
    [IsChat] [bit] NULL,
    [IsEmail] [bit] NULL,
    [MinuteCost] [decimal](18, 2) NOT NULL,
    [TestimonyRate] [int] NULL,
    [TestimonyQuantity] [int] NULL,
    [StatusId] [int] NULL
)

AS
BEGIN
IF(@keywords != '')
    BEGIN
        insert @results
            SELECT p.Id, p.SubCategoryId, p.UserId, p.SmallDescription, p.DetailedDescription, p.Graduation, 
                        p.Experience, p.IsChat, p.IsEmail, p.MinuteCost, p.TestimonyRate, p.TestimonyQuantity, 
                        p.StatusId FROM 
            Profile p inner join ProfileSearchKeyword psk
            ON p.Id = psk.ProfileId
            WHERE CONTAINS(psk.*,@keywords)
    END
ELSE 
    BEGIN
        insert @results
            SELECT p.* FROM 
            Profile p inner join ProfileSearchKeyword psk
            ON p.Id = psk.ProfileId
    END
RETURN
END

ALTER  FUNCTION [dbo].[fn_Car]
(
      @ListToCalc tp_CarList READONLY
)
RETURNS TABLE
AS
    RETURN
    (
        SELECT l.ID
               , l.CarNumber
               , l.ArriveDate
        FROM @ListToCalc l
        INNER JOIN Stations as sf ON sf.ID = l.id_StationFrom
    )

用户定义的表类型：

CREATE TYPE [dbo].[tp_CarList] AS TABLE(
    [ID] [int] NOT NULL,
    [CarNumber] [varchar](12) NULL,
    [ArriveDate] [datetime] NULL    
)
GO

当我直接调用表值函数时，这确实有效，但是如果我加入它（使用
let
关键字）并从另一个表向它传递一个值，则会出现“无法转换为存储表达式”错误。还有什么方法可以这样做吗？api改变了。OnModelCreating中的代码应该是：modelBuilder.Conventions.Add（新函数convention（“dbo”））；
CREATE FUNCTION SearchSomething
(   
    @keywords nvarchar(4000)
)
RETURNS TABLE 
AS
RETURN 
(SELECT KEY_TBL.RANK AS Rank, Id
FROM MyTable 
LEFT JOIN freetexttable(MyTable , ([MyColumn1],[MyColumn2]), @keywords) AS KEY_TBL      
ON MyTable.Id = KEY_TBL.[KEY]  
WHERE KEY_TBL.RANK > 0   
)
GO

var fooDataTable = new DataTable();
var ids = new List<FooDto>();
if (ids.Count > 0)
{
    fooDataTable.Columns.Add("ID", typeof(int));
    fooDataTable.Columns.Add("CarNumber");
    fooDataTable.Columns.Add("ArriveDate", typeof(DateTime));                

    foreach (var car in ids)
    {
        fooDataTable.Rows.Add(car?.ID, car?.CarNumber, car?.ArriveDate);
    }
}

SqlParameter cdIDs = new SqlParameter("@ListToCalc", SqlDbType.Structured);
cdIDs.Value = fooDataTable;
cdIDs.TypeName = "tp_CarList";

var template = new CarFieldsDTO
{
    Fields = db.Database.SqlQuery<fn_Car_Result>
        ("SELECT * FROM dbo.fn_Car(@ListToCalc)", cdIDs)
            .Select(field => new CarFieldsDTO
            {
                ID = field.ID,
                CarNumber = field.CarNumber,
                ArriveDate = field.ArriveDate,                    
            }).ToList()
};

var fields = new List<CarFieldsDTO> { template };
return fields.AsQueryable();

public class CarFieldsDTO
{        
    public int ID { get; set; }

    public string CarNumber { get; set; }

    public DateTime? ArriveDate { get; set; }

    public IEnumerable<CarFieldsDTO> Fields { get; set; }
}

ALTER  FUNCTION [dbo].[fn_Car]
(
      @ListToCalc tp_CarList READONLY
)
RETURNS TABLE
AS
    RETURN
    (
        SELECT l.ID
               , l.CarNumber
               , l.ArriveDate
        FROM @ListToCalc l
        INNER JOIN Stations as sf ON sf.ID = l.id_StationFrom
    )

CREATE TYPE [dbo].[tp_CarList] AS TABLE(
    [ID] [int] NOT NULL,
    [CarNumber] [varchar](12) NULL,
    [ArriveDate] [datetime] NULL    
)
GO