SQL Loop/recursion 跨越多层

Question

我现在有点头疼！帮助我的Whosebug，你是我唯一的希望。

目标是使用 SQL 和一些表格计算最终生产 SKU 所需的 material 数量。

我几乎有一个工作代码，但它是一团糟，所以我需要格式方面的帮助，如果可以的话，可以用其他方式来完成。

如果 SKU 有半成品，则需要考虑 materials，并根据最终 SKU 所需的半成品和数量进行计算。

I.E.如果SKU 1001需要0.2个半成品9001。那么制作一个9001所需的material需要乘以0.2得到SKU 1001的material需求

这有很多层，一个成品可能最终需要5层不同的半成品。

作为奖励，需要包括以天为单位的生产提前期，以根据生产预测计算每天的 material 需求。 (在生产最终SKU半成品之前需要多少天)

我认为为此使用 CTE 可能是正确的方法，而不是联合，但我无法弄清楚。代码之后是表格和示例数据。

包含代码。乱七八糟的。

SELECT
  FinalItem,
  MaterialItemCode,
  SUM(Quantity),
  ProductionLead
FROM
  (
    select
      '1' AS Lvl,
      ItemCode as FinalItem,
      ItemCode,
      MaterialItemCode,
      SUM(Qty) AS QUANTITY,
      zEndProduct,
      zSemiFinished,
      zMaterial,
      0 AS ProductionLead
    from
      StdBOM
      INNER join Item on Item.Code = StdBOM.MaterialItemCode
    WHERE
      Qty != 0
    GROUP BY
      ItemCode,
      MaterialItemCode,
      zEndProduct,
      zSemiFinished,
      zMaterial
    UNION ALL
    SELECT
      '2',
      I.ItemCode,
      StdBOM.ItemCode,
      StdBOM.MaterialItemCode,
      Qty,

      zEndProduct,
      zSemiFinished,
      zMaterial,
      ProdBuffTime AS ProductionLead
    FROM
      StdBOM
      INNER join Item on Item.Code = StdBOM.MaterialItemCode
      LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = StdBOM.ItemCode
      INNER JOIN (
        select
          ItemCode,
          MaterialItemCode
        from
          StdBOM
          INNER join Item on Item.Code = StdBOM.MaterialItemCode
        WHERE
          Item.zSemiFinished = 1
          and Qty != 0
      ) I ON I.MaterialItemCode = StdBOM.ItemCode
      AND StdBOM.Qty != 0
    UNION ALL
    SELECT
      '3',
      FinalItem,
      BOM.ItemCode,
      BOM.MaterialItemCode,
      BOM.Qty,
      Item.zEndProduct,
      Item.zSemiFinished,
      Item.zMaterial,
      ProdBuffTime + S.ProductionLead AS ProductionLead
    FROM
      (
        SELECT
          I.ItemCode AS FinalItem,
          StdBOM.ItemCode,
          StdBOM.MaterialItemCode,
          Qty,
          zEndProduct,
          zSemiFinished,
          zMaterial,
          ProdBuffTime AS ProductionLead
        FROM
          StdBOM
          INNER join Item on Item.Code = StdBOM.MaterialItemCode
          LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = StdBOM.ItemCode
          INNER JOIN (
            select
              ItemCode,
              MaterialItemCode
            from
              StdBOM
              INNER join Item on Item.Code = StdBOM.MaterialItemCode
            WHERE
              Item.zSemiFinished = 1
              and Qty != 0
          ) I ON I.MaterialItemCode = StdBOM.ItemCode
        WHERE
          zSemiFinished = 1
      ) S
      INNER JOIN StdBOM BOM on S.MaterialItemCode = BOM.ItemCode
      INNER JOIN Item on Item.Code = BOM.MaterialItemCode
      LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
    WHERE
      BOM.Qty != 0
    UNION ALL
    SELECT
      '4',
      FinalItem,
      BOM.ItemCode,
      BOM.MaterialItemCode,
      BOM.Qty,
      Item.zEndProduct,
      Item.zSemiFinished,
      Item.zMaterial,
      ProdBuffTime + T.ProductionLead AS ProductionLead
    FROM
      (
        SELECT
          FinalItem,
          BOM.ItemCode,
          BOM.MaterialItemCode,
          BOM.Qty,
          Item.zEndProduct,
          Item.zSemiFinished,
          Item.zMaterial,
          ProdBuffTime + S.ProductionLead AS ProductionLead
        FROM
          (
            SELECT
              I.ItemCode AS FinalItem,
              StdBOM.ItemCode,
              StdBOM.MaterialItemCode,
              Qty,
              zEndProduct,
              zSemiFinished,
              zMaterial,
              ProdBuffTime AS ProductionLead
            FROM
              StdBOM
              INNER join Item on Item.Code = StdBOM.MaterialItemCode
              LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = StdBOM.ItemCode
              INNER JOIN (
                select
                  ItemCode,
                  MaterialItemCode
                from
                  StdBOM
                  INNER join Item on Item.Code = StdBOM.MaterialItemCode
                WHERE
                  Item.zSemiFinished = 1
                  and Qty != 0
              ) I ON I.MaterialItemCode = StdBOM.ItemCode
            WHERE
              zSemiFinished = 1
          ) S
          INNER JOIN StdBOM BOM on S.MaterialItemCode = BOM.ItemCode
          INNER JOIN Item on Item.Code = BOM.MaterialItemCode
          LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
        WHERE
          BOM.Qty != 0
      ) T
      INNER JOIN StdBOM BOM on T.MaterialItemCode = BOM.ItemCode
      INNER JOIN Item on Item.Code = BOM.MaterialItemCode
      LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
    WHERE
      BOM.Qty != 0
    UNION ALL
    SELECT
      '5',
      FinalItem,
      BOM.ItemCode,
      BOM.MaterialItemCode,
      BOM.Qty,
      Item.zEndProduct,
      Item.zSemiFinished,
      Item.zMaterial,
      ProdBuffTime + U.ProductionLead AS ProductionLead
    FROM
      (
        SELECT
          FinalItem,
          BOM.ItemCode,
          BOM.MaterialItemCode,
          BOM.Qty,
          Item.zEndProduct,
          Item.zSemiFinished,
          Item.zMaterial,
          ProdBuffTime + T.ProductionLead AS ProductionLead
        FROM
          (
            SELECT
              FinalItem,
              BOM.ItemCode,
              BOM.MaterialItemCode,
              BOM.Qty,
              Item.zEndProduct,
              Item.zSemiFinished,
              Item.zMaterial,
              ProdBuffTime + S.ProductionLead AS ProductionLead
            FROM
              (
                SELECT
                  I.ItemCode AS FinalItem,
                  StdBOM.ItemCode,
                  StdBOM.MaterialItemCode,
                  Qty,
                  zEndProduct,
                  zSemiFinished,
                  zMaterial,
                  ProdBuffTime AS ProductionLead
                FROM
                  StdBOM
                  INNER join Item on Item.Code = StdBOM.MaterialItemCode
                  LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = StdBOM.ItemCode
                  INNER JOIN (
                    select
                      ItemCode,
                      MaterialItemCode
                    from
                      StdBOM
                      INNER join Item on Item.Code = StdBOM.MaterialItemCode
                    WHERE
                      Item.zSemiFinished = 1
                      and Qty != 0
                  ) I ON I.MaterialItemCode = StdBOM.ItemCode
                WHERE
                  zSemiFinished = 1
              ) S
              INNER JOIN StdBOM BOM on S.MaterialItemCode = BOM.ItemCode
              INNER JOIN Item on Item.Code = BOM.MaterialItemCode
              LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
            WHERE
              BOM.Qty != 0
          ) T
          INNER JOIN StdBOM BOM on T.MaterialItemCode = BOM.ItemCode
          INNER JOIN Item on Item.Code = BOM.MaterialItemCode
          LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
        WHERE
          BOM.Qty != 0
      ) U
      INNER JOIN StdBOM BOM on U.MaterialItemCode = BOM.ItemCode
      INNER JOIN Item on Item.Code = BOM.MaterialItemCode
      LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
    WHERE
      BOM.Qty != 0
    UNION ALL
    SELECT
      '6',
      FinalItem,
      BOM.ItemCode,
      BOM.MaterialItemCode,
      BOM.Qty,
      Item.zEndProduct,
      Item.zSemiFinished,
      Item.zMaterial,
      ProdBuffTime + Y.ProductionLead AS ProductionLead
    FROM
      (
        SELECT
          FinalItem,
          BOM.ItemCode,
          BOM.MaterialItemCode,
          BOM.Qty,
          Item.zEndProduct,
          Item.zSemiFinished,
          Item.zMaterial,
          ProdBuffTime + U.ProductionLead AS ProductionLead
        FROM
          (
            SELECT
              FinalItem,
              BOM.ItemCode,
              BOM.MaterialItemCode,
              BOM.Qty,
              Item.zEndProduct,
              Item.zSemiFinished,
              Item.zMaterial,
              ProdBuffTime + T.ProductionLead AS ProductionLead
            FROM
              (
                SELECT
                  FinalItem,
                  BOM.ItemCode,
                  BOM.MaterialItemCode,
                  BOM.Qty,
                  Item.zEndProduct,
                  Item.zSemiFinished,
                  Item.zMaterial,
                  ProdBuffTime + S.ProductionLead AS ProductionLead
                FROM
                  (
                    SELECT
                      I.ItemCode AS FinalItem,
                      StdBOM.ItemCode,
                      StdBOM.MaterialItemCode,
                      Qty,
                      zEndProduct,
                      zSemiFinished,
                      zMaterial,
                      ProdBuffTime AS ProductionLead
                    FROM
                      StdBOM
                      INNER join Item on Item.Code = StdBOM.MaterialItemCode
                      LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = StdBOM.ItemCode
                      INNER JOIN (
                        select
                          ItemCode,
                          MaterialItemCode
                        from
                          StdBOM
                          INNER join Item on Item.Code = StdBOM.MaterialItemCode
                        WHERE
                          Item.zSemiFinished = 1
                          and Qty != 0
                      ) I ON I.MaterialItemCode = StdBOM.ItemCode
                    WHERE
                      zSemiFinished = 1
                  ) S
                  INNER JOIN StdBOM BOM on S.MaterialItemCode = BOM.ItemCode
                  INNER JOIN Item on Item.Code = BOM.MaterialItemCode
                  LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
                WHERE
                  BOM.Qty != 0
              ) T
              INNER JOIN StdBOM BOM on T.MaterialItemCode = BOM.ItemCode
              INNER JOIN Item on Item.Code = BOM.MaterialItemCode
              LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
            WHERE
              BOM.Qty != 0
          ) U
          INNER JOIN StdBOM BOM on U.MaterialItemCode = BOM.ItemCode
          INNER JOIN Item on Item.Code = BOM.MaterialItemCode
          LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
        WHERE
          BOM.Qty != 0
      ) Y
      INNER JOIN StdBOM BOM on Y.MaterialItemCode = BOM.ItemCode
      INNER JOIN Item on Item.Code = BOM.MaterialItemCode
      LEFT OUTER JOIN ProductionLead on ProductionLead.ItemCode = BOM.ItemCode
    WHERE
      BOM.Qty != 0
  ) BOM
WHERE
  zMATERIAL = 1
GROUP BY
  MaterialItemCode,
  ProductionLead,
  FinalItem
ORDER BY
  1,
  2

表格和示例数据：

CREATE TABLE ProductionLead (
    ItemCode varchar(40) NULL, --This Includes Half-Finished Products
    ProdBuffTime float(53) NULL
)

CREATE TABLE StdBOM(
    ItemCode varchar(40) NULL, --BOTH Finished and Half-Finished Products
    MaterialItemCode varchar(80) NULL, --BOTH Half-Finished and Materials
    Qty real NULL
)

CREATE TABLE Item(
    Code nvarchar(450) NULL, --Materials, Half-Finished and Finished
    zEndProduct bit NULL,
    zMaterial bit NULL,
    zSemiFinished bit NULL
)

--SAMPLE DATA

INSERT INTO ITEM (Code, zEndProduct, zSemiFinished, zMaterial) VALUES
('51130',1,0,0),
('905111', 0, 1, 0),
('91010', 0, 0, 1),
('99400', 0, 0, 1),
('t81400', 0, 0, 1),
('t82002', 0, 0, 1),
('t82215', 0, 0, 1),
('t85062', 0, 0, 1),
('t85102', 0, 0, 1),
('904111', 0, 1, 0),
('91010', 0, 0, 1),
('t84100', 0, 0, 1),
('902100', 0, 1, 0),
('920903', 0, 1, 0),
('99405', 0, 0, 1),
('11016', 0, 0, 1),
('79997', 0, 0, 1),
('91001', 0, 0, 1),
('91010', 0, 0, 1),
('99403', 0, 0, 1),
('902160', 0, 0, 1),
('902702', 0, 0, 1),
('902704', 0, 0, 1),
('t80200', 0, 0, 1),
('t82432', 0, 0, 1)

INSERT INTO StdBOM (ItemCode, MaterialItemCode, Qty) VALUES
('920903','91001',0.872),
('920903','t80200',0.128),
('902100','11025',0),
('902100','11024',0),
('902100','11026',0),
('902100','11016',1.413),
('902100','11027',0),
('902100','11011',0),
('904111','902100',0.943),
('904111','902165',0),
('904111','920903',0.057),
('904111','99405',0.0028),
('905111','904111',1.1806),
('905111','t84100',0.006548),
('905111','91010',0.539),
('902100','901100',0),
('902100','99403',0.005),
('904111','901220',0),
('902100','t82432',0.0051),
('902100','79997',0.02),
('902100','91001',0),
('902100','91010',0.058),
('902100','902702',-0.0814),
('902100','902704',-0.0299),
('902100','902160',-0.001),
('904111','91010',0),
('904111','902160',0)

INSERT INTO ProductionLead (ItemCode, ProdBuffTime) VALUES
('905111',1),
('t82002',0),
('t85062',0),
('t81400',0),
('99400',0),
('t84100',0),
('904111',0),
('902100',1),
('99405',0),
('11016',0),
('99403',0),
('t82432',0),
('91001',0),
('79997',0),
('t80200',0),
('t82215',0),
('t85102',0),
('91010',0),
('902160',0),
('902702',0),
('902704',0),
('920903',0),
('11016',0),
('11016',0)

从这些表格和数据中，我希望获得 zMaterial=1 的物品的总数。

Answer 1

我明白了。这是代码。

WITH RPL (PART, SUBPART, QUANTITY, ProductionBuffer) AS (
    SELECT StdBOM.itemcode, StdBOM.MatItemCode, Qty, ProductionLead.ProdBuffTime AS ProductionBuffer
    FROM StdBOM
    LEFT OUTER JOIN ProductionLead ON ProductionLead .ItemCode=StdBOM.MatItemCode
    where Qty != 0
    UNION ALL
    SELECT PARENT.PART, CHILD.MatItemCode, PARENT.QUANTITY * CHILD.Qty, PARENT.ProductionBuffer+PRODBUFFMAT.ProdBuffTime
    FROM RPL PARENT, StdBOM CHILD
    JOIN Digia_ItemLoc PRODBUFFMAT ON PRODBUFFMAT.ItemCode=CHILD.MatItemCode
    WHERE PARENT.SUBPART = CHILD.itemCode
)

SELECT PART, SUBPART, Material.zMaterial, SUM(QUANTITY), CASE WHEN ENNAKKO is null THEN 0 ELSE ENNAKKO END AS ENNAKKO FROM RPL
    LEFT OUTER JOIN Item Material ON Material.Code = RPL.SUBPART and Material.zMaterial='Kyllä'
    WHERE zMaterial='Kyllä'
    GROUP BY PART, SUBPART, Material.zMaterial, ENNAKKO
    HAVING SUM(QUANTITY) != 0
    ORDER BY ENNAKKO

SQL Loop/recursion 跨越多层

SQL Loop/recursion across multiple layers

sql

tsql

recursion

loops

layer