实体框架导入不正确的存储过程定义

Question

这是我的存储过程：

ALTER PROCEDURE [dbo].[GetFullPlanHistory]
    @PlanId int
AS
BEGIN
    SET NOCOUNT ON;

    DECLARE     @bal decimal(8,2)

    SELECT      @bal = q.TotalCostNett + q.TotalCostVAT
    FROM        Quote q
    INNER JOIN  [plan] p
    ON          p.quoteid = q.quoteid
    WHERE       p.planid = @PlanId;

    WITH tab(srt, dat, typ, ref, paid, refd, bal, note) AS
    (
        SELECT      0 srt, 
                    p.StartDate, 
                    'Plan started', 
                    CONVERT(varchar(20), p.planid),
                    0.00 Paid, 
                    0.00 Refund, 
                    q.TotalCostNett + q.TotalCostVAT Balance, 
                    'Plan started'
        FROM        [plan] p
        INNER JOIN  quote q
        ON          q.quoteid = p.quoteid
        WHERE       p.planid = @PlanId

        UNION ALL

        SELECT      1 srt,
                    t.[when],
                    CASE
                        WHEN    tt.ShortName = 'RCT'
                        AND     t.Amount > 0.00
                        THEN    'Refund'
                        ELSE    tt.LongName
                    END descr,
                    t.Reference,
                    CASE
                        WHEN t.Amount > 0.00
                        THEN 0.00
                        ELSE
                            CASE
                                WHEN tt.ShortName = 'PRO'
                                THEN t.Amount * 1.2
                                ELSE t.Amount
                            END
                    END Paid,
                    CASE
                        WHEN t.Amount < 0.00
                        THEN 0.00
                        ELSE
                            CASE
                                WHEN tt.ShortName = 'PRO'
                                THEN t.Amount * 1.2
                                ELSE t.Amount
                            END
                    END Refund,
                    0.00 Balance,
                    t.Note
        FROM        Trans   t
        INNER JOIN  TransactionType tt
        ON          tt.TransactionTypeId = t.TransactionTypeId
        WHERE       t.planid=@PlanId
        AND         tt.ShortName IN ('RCT', 'REF', 'TRI', 'TRO', 'PRO')
    )

    SELECT      ROW_NUMBER() OVER (ORDER BY srt, dat) item, *
    INTO        #pbtemp
    FROM        tab

    SELECT      CONVERT(date,dat) [Date],
                typ [Type],
                CASE ABS(paid)
                    WHEN 0.00
                    THEN ''
                    ELSE CONVERT(varchar(20),ABS(Paid))
                END Paid,
                CASE ABS(refd)
                    WHEN 0.00
                    THEN ''
                    ELSE CONVERT(varchar(20),ABS(refd))
                END Refund,
                (
                    SELECT  @bal + SUM(pb2.paid + pb2.refd)
                    FROM    #pbtemp pb2
                    WHERE   pb2.item <= pb.item
                ) Balance,
                srt
    FROM        #pbtemp pb
    UNION ALL
    SELECT      ISNULL(qs.ServiceDate, DATEADD(MONTH, qs.AgeMonths, p.StartDate)) [Date],
                qs.Description [Type],
                '' Paid,
                '' Refund,
                (
                    SELECT  @bal + SUM(pb2.paid + pb2.refd)
                    FROM    #pbtemp pb2
                    WHERE   pb2.[dat] <= ISNULL(qs.ServiceDate, DATEADD(MONTH, qs.AgeMonths, p.StartDate))
                ) Balance,
                1   srt         
    FROM        [Plan] p
    INNER JOIN  QuoteSchedule qs
    ON          qs.QuoteId = p.QuoteId
    WHERE       p.PlanId = @PlanId
    AND         qs.Completed = 1

    ORDER BY    srt,Date;

    DROP TABLE  #pbtemp

END

当我使用Entity Framework将其定义导入我的MVC项目时，EF自动生成的函数如下所示：

    public virtual int GetFullPlanHistory(Nullable<int> planId)
    {
        var planIdParameter = planId.HasValue ?
            new ObjectParameter("PlanId", planId) :
            new ObjectParameter("PlanId", typeof(int));

        return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction("GetFullPlanHistory", planIdParameter);
    }

由于某种原因，即使过程返回结果集，也希望返回int类型。

如何说服EF导入正确的定义？