我需要有关如何为同一采购订单编码重复行ID的帮助,并为其他行ID分配新编号。我想将Line ID + 100用于其他重复行。例如,如果采购订单#11有三个线路ID#5s,则第一个将保持为5,第二个将保持为501,第三个将为502,但是,我只能获得1,2或3或者如果没有重复我不知道用什么来增加。我希望有人可以协助或指导。谢谢
PurchaseOrderID LineID PackingList NewLineID
11 1 12323 1
11 1 78786 2
11 2 67523 1
11 3 44559 1
11 4 44559 1
11 5 96545 1
11 5 12323 2
11 5 34569 3
装箱单会导致重复的行ID相同。
以下是我正在尝试使用的内容,它为我提供了上述NewLineID:
SELECT
PurchaseOrderID,
LineID,
PackingList,
ROW_NUMBER() over
(
partition by PurchaseOrderID, LineID
order by PurchaseOrderID, LineID
) as NewLineID
FROM PurchaseOrderTransactions
答案 0 :(得分:2)
使用ROW_NUMBER
和CASE
:
WITH Cte AS(
SELECT
PurchaseOrderID,
LineID,
PackingList,
RN = ROW_NUMBER() OVER (PARTITION BY PurchaseOrderID, LineID ORDER BY LineID)
FROM PurchaseOrderTransactions
)
SELECT
PurchaseOrderID,
LineID,
PackingList,
NewLineID = CASE
WHEN RN = 1 THEN LineID
ELSE (LineID * 100) + (RN - 1)
END
FROM Cte
不使用CTE:
SELECT
PurchaseOrderID,
LineID,
PackingList,
NewLineID =
CASE
WHEN ROW_NUMBER() OVER (PARTITION BY PurchaseOrderID, LineID ORDER BY LineID) = 1 THEN LineID
ELSE (LineID * 100) + (ROW_NUMBER() OVER (PARTITION BY PurchaseOrderID, LineID ORDER BY LineID) - 1)
END
FROM PurchaseOrderTransactions
| PurchaseOrderID | LineID | PackingList | NewLineID |
|-----------------|--------|-------------|-----------|
| 11 | 1 | 12323 | 1 |
| 11 | 1 | 78786 | 101 |
| 11 | 2 | 67523 | 2 |
| 11 | 3 | 44559 | 3 |
| 11 | 4 | 44559 | 4 |
| 11 | 5 | 96545 | 5 |
| 11 | 5 | 12323 | 501 |
| 11 | 5 | 34569 | 502 |