使用PrimaryKey

Question

我有4张桌子，

表格标题和A详细信息作为主文件

表C标题和C详细信息作为事务

例如：

Table A Header
|Aid | Desc | UnitCost
|1   | Ts   | 1400

Table A Detail
Aid |BID  | Qty | UnitCost
1   |1    | 12  | 200
1   |2    | 21  | 300
1   |3    | 33  | 400

然后，我将表C的插入过程作为事务，包括一个细节：

Table C header
CID |Desc
1   |Payment Transaction

详细交易如下：

我想将表A标题和表A详细信息插入表c详细信息（如何获取？）

Table C detail
CID |BID  | Qty | UnitCost
1   |1    |  1  | 1400
1   |1    | 12  | 0
1   |2    | 21  | 0
1   |3    | 33  | 0

我已经创建了一个这样的插入过程（如下所示），但它给了我一个错误。

我希望为表A详细信息制作unitcost = 0.

INSERT INTO TableCHeader (CID, Desc) VALUES (1, 'Payment Transactions')

-- insert table A header first
INSERT INTO TableCDetail (CID, BID, Qty, UnitCost)
VALUES (1, (SELECT AID, 1, UnitCost FROM TableAHeader WHERE AID = 1))

-- then, insert table A details
INSERT INTO TableCDetail (CID, BID, Qty, UnitCost)
VALUES (1, (SELECT BID, Qty, UnitCost FROM TableADetail WHERE AID = 1))

无论如何我可以得到结果吗？

Answer 1

答案是这样的：

;WITH Table_A_Header AS
(
    SELECT 1  Aid , 'Ts' AS [Desc], 1400 AS UnitCost
)
,Table_A_Detail AS
(
    SELECT 1 AS Aid,1 AS BID,12 AS Qty,200 AS UnitCost
    UNION ALL
    SELECT 1,2,21,300
    UNION ALL
    SELECT 1,3,33,400
)
--INSERT INTO TableCDetail (CID, BID, Qty, UnitCost)
SELECT 
    CID=1,
    BID=AID,
    QTY=1, 
    UnitCost 
FROM Table_A_Header WHERE AID = 1
UNION ALL
SELECT
    CID=1,
    BID, 
    Qty, 
    UnitCost=0
FROM Table_A_Detail WHERE AID = 1

Answer 2

你的后半部分应该像

-- insert table A header first
INSERT INTO TableCDetail (CID, BID, Qty, UnitCost)
SELECT 
    CID=1,
    BID=AID,
    QTY=1, 
    UnitCost 
FROM TableAHeader WHERE AID = 1

-- then, insert table A details
INSERT INTO TableCDetail (CID, BID, Qty, UnitCost)
SELECT
    CID=1,
    BID, 
    Qty, 
    UnitCost=0
FROM TableADetail WHERE AID = 1