生产BoM爆破演练幻影BoM

Question

这是我的第一个 post，尽管 Stack Overflow 到目前为止帮助了我无数次。希望这次也一样。

我曾尝试使用在网上找到的源代码和代码来构建循环查询和 UDF，但没有成功。越来越糊涂了。

我有：

项目table - 项目编号和物料清单编号
BoMLines table - 带 Bom 编号和所有子项目编号 或幻像 BoM 编号

我追求的是：

基本上我需要列出所有项目及其所有 子项目 和 每个 [=49] 的数量=]. 一切似乎都很好，直到我发现我们还有幻影物料清单（物料清单调用其他物料清单）并且这些物料清单必须 'drilled in' 到项目级别。

预期结果： Screenshot

这是 table 所有项目的清单，BoM 展开到下一个项目！！

为了更容易地展示我在包含 DDL 之后的内容：

-- Drop table Items if exist IF OBJECT_ID('test.Items') IS NOT NULL DROP TABLE test.Items; -- Create Items table CREATE TABLE test.Items ( ItemID varchar(30) COLLATE Latin1_General_CI_AS NOT NULL, Description varchar(100) COLLATE Latin1_General_CI_AS NOT NULL, Prod_BOM_No varchar(30) COLLATE Latin1_General_CI_AS NULL, PRIMARY KEY CLUSTERED (ItemID) WITH ( PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF, STATISTICS_NORECOMPUTE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ) ON [PRIMARY] -- Drop table BOMLines if exist IF OBJECT_ID('test.BOMLines') IS NOT NULL DROP TABLE test.BOMLines; -- Create BOMLines table CREATE TABLE test.BOMLines ( AutoID int IDENTITY(1, 1) NOT NULL, Prod_BOM_No varchar(30) COLLATE Latin1_General_CI_AS NOT NULL, Type tinyint DEFAULT 1 NOT NULL, No_ varchar(30) COLLATE Latin1_General_CI_AS NOT NULL, Qty_Per decimal(18, 8) DEFAULT 1.5 NULL, PRIMARY KEY CLUSTERED (AutoID) WITH ( PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF, STATISTICS_NORECOMPUTE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ) ON [PRIMARY]

还有 DML 来显示我处理的数据示例：

--Insert Test Items to Items table INSERT INTO test.Items (ItemID, Description, Prod_BOM_No) VALUES ('I1001', 'Item I1001', 'BM1010'), ('I1002', 'Item I1002', 'BM1020'), ('I1003', 'Item I1003', 'BM1030'), ('I1004', 'Item I1004', 'BM1040'), ('I1005', 'Item I1005', 'BM1050'), ('I1006', 'Item I1006', 'BM1060'), ('I1007', 'Item I1007', 'BM1070'), ('I1008', 'Item I1008', 'BM1080'), ('I1009', 'Item I1009', 'BM1090'), ('I1010', 'Item I1010', 'BM1100'), ('I5001', 'Item I5001', ''), ('I5002', 'Item I5002', ''), ('I5003', 'Item I5003', ''), ('I5004', 'Item I5004', ''), ('I5005', 'Item I5005', ''), ('I5006', 'Item I5006', ''), ('I5007', 'Item I5007', ''), ('I5008', 'Item I5008', ''), ('I5009', 'Item I5009', ''), ('I5010', 'Item I5010', ''), ('I5011', 'Item I5011', ''), ('I5012', 'Item I5012', ''), ('I5013', 'Item I5013', ''), ('I5014', 'Item I5014', ''), ('I5015', 'Item I5015', ''), ('I5016', 'Item I5016', ''), ('I5017', 'Item I5017', ''), ('I5018', 'Item I5018', ''), ('I5019', 'Item I5019', ''), ('I5020', 'Item I5020', ''); -- Insert test BOMs to BOMLines table INSERT INTO test.BOMLines ( Prod_BOM_No, No_, [Type]) VALUES ('BM1010', 'I5001', 1), ('BM1020', 'I5002', 1), ('BM1020', 'I5003', 1), ('BM1030', 'BM1031', 2), ('BM1030', 'I5004', 1), ('BM1031', 'I5005', 1), ('BM1040', 'I5006', 1), ('BM1050', 'I5007', 1), ('BM1050', 'BM1051', 2), ('BM1051', 'BM1052', 2), ('BM1052', 'I5008', 1), ('BM1060', 'I5009', 1), ('BM1060', 'I5010', 1), ('BM1060', 'I5011', 1), ('BM1060', 'BM1061', 2), ('BM1061', 'I5012', 1), ('BM1061', 'I5013', 1), ('BM1061', 'BM1062', 2), ('BM1062', 'I5013', 1), ('BM1062', 'I5014', 1), ('BM1070', 'I5015', 1), ('BM1080', 'I5016', 1), ('BM1080', 'I5017', 1), ('BM1080', 'I5018', 1), ('BM1090', 'I5019', 1), ('BM1100', 'I5020', 1);

Answer 1

您可以使用 Recursive Common Table Expression:

;With BOMs (Prod_BOM_No, Type, No_, Qty_Per) AS
(
    select Prod_BOM_No, Type, No_, Qty_Per
    from test.BOMLines
    union all
    select test.BOMLines.Prod_BOM_No, BOMs.Type, BOMs.No_, convert(decimal(18, 8), test.BOMLines.Qty_Per * BOMs.Qty_Per) as Qty_Per
    from test.BOMLines
    join BOMs 
    on test.BOMLines.Type = 2 and test.BOMLines.No_ = BOMs.Prod_BOM_No
)
select ItemID, Description, No_, Qty_Per
from test.Items
join BOMs
on test.Items.Prod_BOM_No = BOMs.Prod_BOM_No
    and Type = 1
order by 1, 2

生产BoM爆破演练幻影BoM

Production BoM explosion drill through phantom BoM

sql

database

sql-server

recursive-query