0

这是功能：

CREATE FUNCTION dbo.agedItemResult(@ILC VARCHAR(30))
    RETURNS @AgedTable TABLE (
ItemID INT,
ItemLookupCode VARCHAR(30),
[Month] INT,
[Year] INT,
Aged INT,
Debug01 VARCHAR(MAX),
Debug02 VARCHAR(MAX),
Debug03 VARCHAR(MAX),
Debug04 VARCHAR(MAX),
Debug05 VARCHAR(MAX)
) 
AS
BEGIN

DECLARE @TotalSold INT
DECLARE @AdjustmentQty INT
DECLARE @FirstRcvdStart DATETIME
DECLARE @FirstRcvdEnd DATETIME
--DECLARE @ILC VARCHAR(MAX)
--DECLARE @ItemID INT
DECLARE @MovingQty INT
DECLARE @MovingMonthStart DATETIME
DECLARE @MovingMonthEnd DATETIME
DECLARE @CurrentMonthStart DATETIME
DECLARE @CurrentMonthEnd DATETIME
DECLARE @CurrentRcvd INT
DECLARE @NumMonths INT
DECLARE @AgeReached INT
/*DECLARE @AgedTable TABLE (    ItemID INT,
                            ItemLookupCode VARCHAR(MAX),
                            [Month] INT,
                            [Year] INT,
                            Aged INT,
                            Debug01 VARCHAR(MAX),
                            Debug02 VARCHAR(MAX),
                            Debug03 VARCHAR(MAX),
                            Debug04 VARCHAR(MAX),
                            Debug05 VARCHAR(MAX)
                            )*/

--SET @ILC = '21208641'
SET @TotalSold          = (SELECT SUM(Sold) FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC)
SET @AdjustmentQty      = (SELECT SUM(HQAdjustment) FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC)
SET @FirstRcvdStart     = (SELECT TOP 1 FirstTransferred FROM JSInventorySnapShot ORDER BY FirstTransferred ASC)
SET @FirstRcvdEnd       = (SELECT DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0, @FirstRcvdStart)+1,0)))
SET @CurrentMonthStart  = (SELECT DATEADD(s,0,DATEADD(mm, DATEDIFF(m,0, GETDATE()),0))) 
SET @CurrentMonthEnd    = (SELECT DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0, GETDATE())+1,0))) 
SET @NumMonths          = (SELECT CASE 
                            WHEN DATEPART(DAY, @FirstRcvdStart) > DATEPART(DAY, @CurrentMonthEnd) 
                                THEN DATEDIFF(MONTH, @FirstRcvdStart, @CurrentMonthEnd) - 1 
                                ELSE DATEDIFF(MONTH, @FirstRcvdStart, @CurrentMonthEnd) 
                            END) + 1
SET @MovingQty          = @TotalSold
SET @CurrentRcvd        = ISNULL((SELECT SUM(Rcvd) FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC AND [Month] = Month(@FirstRcvdStart)), 0) + @AdjustmentQty
SET @MovingMonthStart   = @FirstRcvdStart
SET @MovingMonthEnd     = @FirstRcvdEnd
SET @MovingQty          = @MovingQty - @CurrentRcvd
SET @AgeReached         = 0

WHILE(@NumMonths > 0)
BEGIN
    IF (@CurrentRcvd = 0)
    BEGIN
        INSERT INTO @AgedTable (ItemID, ItemLookupCode, [Month], [Year], Aged, Debug01) 
            SELECT (SELECT TOP 1 ItemID FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC),
                        @ILC, 
                        MONTH(@MovingMonthStart),
                        YEAR(@MovingMonthStart),
                        0,
                        @AdjustmentQty
    END
    ELSE
    BEGIN
        IF(@MovingQty > 0)
        BEGIN
            INSERT INTO @AgedTable (ItemID, ItemLookupCode, [Month], [Year], Aged, Debug01) 
                SELECT (SELECT TOP 1 ItemID FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC),
                            @ILC, 
                            MONTH(@MovingMonthStart),
                            YEAR(@MovingMonthStart),
                            0,
                            @AdjustmentQty
        END
        ELSE
        BEGIN
            IF (@AgeReached = 1)
            BEGIN
                INSERT INTO @AgedTable (ItemID, ItemLookupCode, [Month], [Year], Aged) 
                    SELECT (SELECT TOP 1 ItemID FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC),
                                @ILC, 
                                MONTH(@MovingMonthStart),
                                YEAR(@MovingMonthStart),
                                @CurrentRcvd
            END
            ELSE
            BEGIN
                INSERT INTO @AgedTable (ItemID, ItemLookupCode, [Month], [Year], Aged) 
                    SELECT (SELECT TOP 1 ItemID FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC),
                                @ILC, 
                                MONTH(@MovingMonthStart),
                                YEAR(@MovingMonthStart),
                                (-1 * @MovingQty)
                    SET @AgeReached = 1
            END
        END
    END
    SET @NumMonths          = @NumMonths - 1
    SET @MovingMonthStart   = (SELECT DATEADD(s,0,DATEADD(mm, DATEDIFF(m,0, @MovingMonthStart)+1,0))) 
    SET @MovingMonthEnd     = (SELECT DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0, @MovingMonthEnd)+2,0)))
    SET @CurrentRcvd        = ISNULL((SELECT SUM(Rcvd) FROM JSInventorySnapShot WHERE ItemLookupCode = @ILC AND [Month] = Month(@MovingMonthStart)), 0)
    SET @MovingQty          = @MovingQty - @CurrentRcvd
    END
    RETURN
END

简而言之，这就是它的作用：

首先，我们找到第一个收到或移动的物品，并使用日期作为开始日期。然后我们找到该商品的总销售额，并开始从销售额中减去收货金额。剩余部分被视为老化（未售出），并在下个月进行评估。然后我们移至下个月并重复该过程，直到我们达到负数或 0。如果我们达到负数，则意味着我们已经达到了一个月，我们订购的数量超过了迄今为止的销售量，并且该数量被视为已老化（不出售）。如果还有更多月份需要评估，则默认情况下，任何进一步收到的金额都将被视为已过期，因为它显然未售出。

以下是用于评估的表中的示例数据：

ID      ItemID  ItemLookupCode  HQAdjustment    FirstTransferred        Rcvd    RcvdDateEarly           RcvdDateLate            Sold    SoldDateEarly           SoldDateLate            Sales   Month   Year    StartOfMonthQty EndOfMonthQty
17350   188993  21208641        0               2012-04-05 13:29:14.000 48      2012-04-27 11:00:40.100 2012-04-27 11:00:40.100 40      2012-04-05 13:29:14.000 2012-04-30 12:50:13.000 75.20   4       2012    0               8
34427   188993  21208641        0               2012-04-05 13:29:14.000 120     2012-05-22 10:14:40.213 2012-05-22 10:14:40.213 24      2012-05-04 17:42:12.000 2012-05-29 10:22:10.000 44.72   5       2012    8               104
48437   188993  21208641        0               2012-04-05 13:29:14.000 0       NULL                    NULL                    12      2012-06-02 16:24:45.000 2012-06-21 11:15:05.000 22.36   6       2012    104             92
62369   188993  21208641        0               2012-04-05 13:29:14.000 60      2012-07-16 12:57:33.330 2012-07-16 12:57:33.330 9       2012-07-11 14:42:01.000 2012-07-25 14:58:41.000 16.22   7       2012    92              143
75781   188993  21208641        0               2012-04-05 13:29:14.000 0       NULL                    NULL                    2       2012-08-01 12:56:10.000 2012-08-14 19:01:00.000 4.01    8       2012    143             141

这是我对上述数据的函数的结果：

ItemLookupCode  Month   Rcvd    Sold    Aged
21208641        4       48      40      0
21208641        5       120     24      81
21208641        6       0       12      0
21208641        7       60      9       60
21208641        8       0       2       0

这告诉我，我们卖掉了四月份收到的所有东西。5 月再次订购，卖出了一些，但仍有剩余库存（老化）。然后，在 7 月份没有售出库存的情况下，我们再次订购了更多库存，因此该库存被自动视为已老化。

这个函数的目的是停止上面发生的事情。这是订购具有老化（未售出）库存的物品。它还用于评估一个部门的老化程度，以及我们是否应该考虑开始销售以摆脱老化的物品。

问题是我们要评估的项目不少于 40,000 个。此功能适用于单个项目，但 100 个项目需要 30 秒。我希望有人能长期来看我的功能并意识到我正在以完全错误的方式进行操作。如果我可以完成内联计算并结转剩余部分，那就太好了。

我基本上需要简化的伪代码：

Foreach (Month2Date)
If AllInventoryAged = 1 Then //This says we've reached our sales:rcved thresh-hold and all received inventory is aged from here on out.
   ThisMonthAged = RcvedForMonth
Else
   TotalSales - RcvedForMonth = Aged
    If Aged < 0 Then
        ThisMonthAged = Aged * -1 //We received more than sold so it's negative and we have hit our sales:rcved thresh-hold.
        AllInventoryAged = 1 //Anything received from this point on is aged.
    Else    
        ThisMonthAged = 0  //We received less this month then sold. A good thing.
        TotalSales = Aged //We carry on the remainder for further evaluation

我希望这次我已经彻底解释了自己。抱歉这么久。我真的很想涵盖我在上一篇文章中遇到的所有问题。

4

1 回答 1

0

我最终通过重新评估我想要做的事情来解决这个问题。我能够使用递归 CTE。你可以在这里看到我相关的“测试”代码：

TSQL - 递归 CTE 效率低下 - 需要替代方案

于 2012-10-11T13:56:07.913 回答