SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER FUNCTION [dbo].[fn_GetUserId_Username]
(
@Username varchar(32)
)
RETURNS int
AS
BEGIN
DECLARE @UserId int
SELECT @UserId = UserId FROM [User] WHERE Username = @Username
RETURN @UserId
END
现在,我想我的.NET C#或VB.NET代码中运行它创建了一个标量函数。
我使用实体框架,我试图映射它与功能映射,我没有成功。 我不在乎用简单的DbCommand做到这一点,问题是,我没有得到任何结果(在实体类存在的功能):
public int GetUserIdByUsername(string username)
{
EntityConnection connection = (EntityConnection)Connection;
DbCommand com = connection.StoreConnection.CreateCommand();
com.CommandText = "fn_GetUserId_Username";
com.CommandType = CommandType.StoredProcedure;
com.Parameters.Add(new SqlParameter("Username", username));
if (com.Connection.State == ConnectionState.Closed) com.Connection.Open();
try
{
var result = com.ExecuteScalar(); //always null
}
catch (Exception e)
{
}
return result;
}
有没有什么解决办法吗?在C#或VB.NET中的文章将会很好用。
结果: SQLEXCEPTION: 'fn_GetUserId_Username' 不是可以识别的函数名。 – Shimmy 2009-06-29 03:13:31
@Shimmy:指定所有者的名称,“dbo” - >“select dbo.fn_GetUserId_Username(@Username)” – Sung 2009-06-29 03:20:23