Question

我有以下两个表：

DueDates：

DECLARE @DueDates TABLE (
    uniqueln varchar(10),
    ship_dts smalldatetime,
    qty decimal(18,4))
INSERT INTO @DueDates
SELECT '51351621AS','1/1/2013',7
UNION ALL
SELECT '51351621AS','1/7/2013',7
UNION ALL
SELECT '51351621AS','1/14/2013',7
UNION ALL
SELECT '51351621AS','1/21/2013',7
UNION ALL
SELECT '51351621AS','1/28/2013',7
UNION ALL
SELECT 'V4351621AS','1/5/2013',10
UNION ALL
SELECT 'V4351621AS','1/10/2013',10
UNION ALL
SELECT 'V4351621AS','1/15/2013',10
UNION ALL
SELECT 'V4351621AS','1/20/2013',10
UNION ALL
SELECT 'V4351621AS','1/25/2013',10

PlDetail

DECLARE @PlDetail TABLE (
    uniqueln varchar(10),
    shipdate smalldatetime,
    shippedqty decimal(18,4))
INSERT INTO @PlDetail
SELECT '51351621AS','1/1/2013',10
UNION ALL
SELECT '51351621AS','1/7/2013',10
UNION ALL
SELECT '51351621AS','1/14/2013',10
UNION ALL
SELECT '51351621AS','1/21/2013',5
UNION ALL
SELECT 'V4351621AS','1/5/2013',13
UNION ALL
SELECT 'V4351621AS','1/15/2013',9
UNION ALL
SELECT 'V4351621AS','1/25/2013',12
UNION ALL
SELECT 'V4351621AS','1/30/2013',10
UNION ALL
SELECT 'V4351621AS','2/5/2013',6

PlDetail中的货件可以与DueDates表中的订单一对一，但通常不是。

我正在尝试使用uniqueln方法计算每个FIFO计划的准时交付（我无法更改数据在表中的存储方式）。基本上，我想将最早的货物应用于最早的货物。

如果货件数量超过DueDates记录中的余额，则应将余额应用于下一次预定交货。

最终结果应如下所示：

uniqueln    ship_dts    qty shipdate    shippedqty  daysLate
51351621AS  1/1/2013    7   1/1/2013    7            0
51351621AS  1/7/2013    7   1/1/2013    3           -6
51351621AS  1/7/2013    7   1/7/2013    4            0
51351621AS  1/14/2013   7   1/7/2013    6           -7
51351621AS  1/14/2013   7   1/14/2013   1            0
51351621AS  1/21/2013   7   1/14/2013   7           -7
51351621AS  1/28/2013   7   1/14/2013   2           -14
51351621AS  1/28/2013   7   1/21/2013   5           -7
V4351621AS  1/5/2013    10  1/5/2013    10           0
V4351621AS  1/10/2013   10  1/5/2013    3           -5
V4351621AS  1/10/2013   10  1/15/2013   7            5
V4351621AS  1/15/2013   10  1/15/2013   2            0
V4351621AS  1/15/2013   10  1/25/2013   8           10
V4351621AS  1/20/2013   10  1/25/2013   4            5
V4351621AS  1/20/2013   10  1/30/2013   6           10
V4351621AS  1/25/2013   10  1/30/2013   4            5
V4351621AS  1/25/2013   10  2/5/2013    6           11

我知道如何严格按日期对PlDetail货件进行分组，以便将下一个截止日期或之前的任何货件组合在一起，但它可以计入预定数量与装运数量。

我不想创建游标并循环浏览货件记录，但是如果这种类型的联接不起作用，我可以。但是，我认为这是可能的，但我不确定如何分组或加入表格。

听起来SQL Server 2012有一些新方法可以让这更容易，但是现在我正在使用SQL SERVER 2008 R2并且必须在不久的将来保持这种方式。

最好的方法是什么？光标真的是唯一的方法吗？

更新这是我到目前为止添加的内容。最终结果是一个表格，显示每个uniqueln的from和to qty以及ship_dts

WITH DSeq AS (
   SELECT TOP 100 PERCENT
      Seq = Row_Number() OVER (partition by uniqueln ORDER BY ship_dts),
      D.UNIQUELN,
      D.SHIP_DTS,
      SchBal = (SELECT TOP 100 PERCENT SUM(B.Qty) FROM @DueDates B WHERE b.SHIP_DTS<= D.SHIP_DTS AND b.UNIQUELN=d.UNIQUELN ORDER BY d.SHIP_DTS)
   FROM @DueDates D
   GROUP BY UNIQUELN,D.QTY,D.UNIQUELN,D.SHIP_DTS
   ORDER BY D.UNIQUELN, D.SHIP_DTS
)
--SELECT * FROM DSeq
, Slices AS (
   SELECT
      LN = D.UNIQUELN,
      FromQty = COALESCE(N.SchBal,0),
      ToQty = D.SchBal,
      D.SHIP_DTS
   FROM
      DSeq D
      LEFT OUTER JOIN DSeq N
         ON D.Seq -1 = N.Seq AND D.UNIQUELN=N.UNIQUELN
)
SELECT * FROM Slices

CURSOR APPROACH：

如前所述，最好的方法可能是光标。希望有人有一个满足所有需求的连接方法，但在那之前我们正在使用光标。

如果有人用光标方法寻找解决方案，下面的代码就是我们如何做到的。用户选择日期范围并生成结果。请注意，即使它们在所选日期范围之前发货，您也必须为uniqueln的所有记录运行光标，否则FIFO出货申请将会出错。

DECLARE @startdate smalldatetime, @endDate smalldatetime

DECLARE @OnTime TABLE (Uniqueln varchar(10),DueQty int,dueDate smalldatetime,shipDate smalldatetime,shipQty int DEFAULT 0,daysLate int,balQty int)


DECLARE @uniqln1 varchar(10),@toQty int, @dueDate smalldatetime,@bQty int
DECLARE @uniqln2 varchar(10),@shipQty int, @shipDate smalldatetime

DECLARE ot_cursor CURSOR LOCAL FAST_FORWARD
FOR
SELECT uniqueln,qty,ship_dts,qty
    FROM @DueDates 
    ORDER BY uniqueln,ship_dts 
OPEN ot_cursor;
FETCH NEXT FROM ot_cursor INTO @uniqln1,@toQty,@dueDate,@bQty

WHILE @@FETCH_STATUS = 0
BEGIN
    DECLARE s_cursor CURSOR LOCAL FAST_FORWARD
    FOR
    SELECT Uniqueln,shippedqty,shipdate
        FROM @PlDetail p
        WHERE uniqueln = @uniqln1
        ORDER BY 3
    OPEN s_cursor ;
    FETCH NEXT FROM s_cursor INTO @uniqln2,@shipQty,@shipDate
    WHILE @@FETCH_STATUS = 0
    BEGIN
        INSERT INTO @OnTime(Uniqueln,DueQty,dueDate,shipDate,shipQty,daysLate,balQty)
        SELECT @uniqln1,@toQty,@dueDate,@shipDate,CASE WHEN @bQty>@shipQty THEN @shipQty ELSE @bQty END,DATEDIFF(d,@dueDate,@shipDate),CASE WHEN @bQty>@shipQty THEN @bQty-@shipQty ELSE 0 END
        SET @bQty=@bQty-@shipQty
        IF @bQty < 0 
        BEGIN
            SET @shipQty = -@bQty 
            FETCH NEXT FROM ot_cursor INTO @uniqln1,@toQty,@dueDate,@bQty
        END
        ELSE 
        IF @bQty =0
        BEGIN
            BREAK
        END
        ELSE
        BEGIN
            SET @shipQty = @bQty
            FETCH NEXT FROM s_cursor INTO @uniqln2,@shipQty,@shipDate
        END
    END
    CLOSE s_cursor
    DEALLOCATE s_cursor
    FETCH NEXT FROM ot_cursor INTO @uniqln1,@toQty,@dueDate,@bQty
END
CLOSE ot_cursor
DEALLOCATE ot_cursor

SELECT * FROM @OnTime 
    WHERE shipDate BETWEEN @startdate AND @endDate
    ORDER BY Uniqueln,dueDate

Answer 1

尝试使用CTE和表之间的pidgin交叉连接将某些东西放在一起。（不要问，这很难看）

Anywho，经过一点reading之后，知道桌子有多大，我觉得很安全地回答这个... drumroll ...使用光标。这将是丑陋和缓慢的，但逻辑将在纸上更有意义。关于可维护代码有很多话要说......

更新：去度假。这就是我在玩的东西。

DECLARE @DueDates TABLE (
    uniqueln varchar(10),
    ship_dts smalldatetime,
    qty decimal(18,4))
INSERT INTO @DueDates
SELECT '51351621AS','1/1/2013',7
UNION ALL
SELECT '51351621AS','1/7/2013',7
UNION ALL
SELECT '51351621AS','1/14/2013',7
UNION ALL
SELECT '51351621AS','1/21/2013',7
UNION ALL
SELECT '51351621AS','1/28/2013',7
UNION ALL
SELECT 'V4351621AS','1/5/2013',10
UNION ALL
SELECT 'V4351621AS','1/10/2013',10
UNION ALL
SELECT 'V4351621AS','1/15/2013',10
UNION ALL
SELECT 'V4351621AS','1/20/2013',10
UNION ALL
SELECT 'V4351621AS','1/25/2013',10


DECLARE @PlDetail TABLE (
    uniqueln varchar(10),
    shipdate smalldatetime,
    shippedqty decimal(18,4))
INSERT INTO @PlDetail
SELECT '51351621AS','1/1/2013',10
UNION ALL
SELECT '51351621AS','1/7/2013',10
UNION ALL
SELECT '51351621AS','1/14/2013',10
UNION ALL
SELECT '51351621AS','1/21/2013',5
UNION ALL
SELECT 'V4351621AS','1/5/2013',13
UNION ALL
SELECT 'V4351621AS','1/15/2013',9
UNION ALL
SELECT 'V4351621AS','1/25/2013',12
UNION ALL
SELECT 'V4351621AS','1/30/2013',10
UNION ALL
SELECT 'V4351621AS','2/5/2013',6



; WITH DueDates AS 
(
    SELECT b.*
    FROM @DueDates a
    JOIN @DueDates b
        ON a.uniqueln = b.uniqueln
        AND b.ship_dts >= a.ship_dts
)
, PlDetail AS
(
    SELECT b.*
    FROM @PlDetail a
    JOIN @PlDetail b
        ON a.uniqueln = b.uniqueln
        AND b.shipdate >= a.shipdate
)
SELECT a.uniqueln
    , SUM(a.qty) AS ordered_running_total
    , SUM(b.shippedqty) AS shipped_running_total
    , a.ship_dts
    , b.shipdate
    , SUM(b.shippedqty) - SUM(a.qty) AS leftover_running_total
FROM DueDates a
JOIN PlDetail b
    ON a.uniqueln = b.uniqueln
    AND a.ship_dts >= b.shipdate
GROUP BY a.uniqueln, a.ship_dts, b.shipdate
HAVING SUM(a.qty) <= SUM(b.shippedqty)
ORDER BY a.uniqueln, a.ship_dts, b.shipdate

当SQL表不是一对一时，如何计算准时交付

1 个答案: