Question

我有包含这样数据的源

+-------+-------+---------+--------------+----------------+-------------+--------------+
| ID    | Name  | Type    | Product_Area | Product_status | Spare_value | Service_Time |
+-------+-------+---------+--------------+----------------+-------------+--------------+
| 10001 | Motor | Product | Electrical   | Active         |             |              |
+-------+-------+---------+--------------+----------------+-------------+--------------+
| 10002 | Fan   | Product | Mechanical   | Running        |             |              |
+-------+-------+---------+--------------+----------------+-------------+--------------+
| 10003 | Screw | Spare   |              |                | 10          |              |
+-------+-------+---------+--------------+----------------+-------------+--------------+
| 10004 | Nut   | Spare   |              |                | 20          |              |
+-------+-------+---------+--------------+----------------+-------------+--------------+
| 10005 | Kit   | Service |              |                |             | 1 year       |
+-------+-------+---------+--------------+----------------+-------------+--------------+
| 10006 | Oil   | Service |              |                |             | 6 months     |
+-------+-------+---------+--------------+----------------+-------------+--------------+

我必须将其标准化并放入不同的表中。由于前 3 列对于所有类型都是通用的，因此 Product_Area 和 Product_status 将仅用于产品类型。同样，Spare_value 和 service_time 分别用于备件和服务。要求是创建一个 UID 并将其映射到其他表中，如下所示。

MASTER

+-----+-------+-------+---------+
| UID | ID    | Name  | Type    |
+-----+-------+-------+---------+
| 1   | 10001 | Motor | Product |
| 2   | 10002 | Fan   | Product |
| 3   | 10003 | Screw | Spare   |
| 4   | 10004 | Nut   | Spare   |
| 5   | 10005 | Kit   | Service |
| 6   | 10006 | Oil   | Service |
+-----+-------+-------+---------+

PRODUCT

+-----+--------------+----------------+
| UID | Product_Area | Product_status |
+-----+--------------+----------------+
| 1   | Electrical   | Active         |
| 2   | Mechanical   | Running        |
+-----+--------------+----------------+

SPARE

+-----+-------------+
| UID | Spare_value |
+-----+-------------+
| 3   | 10          |
| 4   | 20          |
+-----+-------------+

SERVICE

+-----+--------------+
| UID | Service_Time |
+-----+--------------+
| 5   | 1 year       |
| 6   | 6 months     |
+-----+--------------+

我创建了一个 IDENTITY 并创建了第一个表 MASTER，没有任何问题。但我不知道如何链接和创建其他表。我已经创建了 foreign key 但我仍然不知道如何获取 UID 并相应地映射 UID。请提出建议。

Answer 1

试试 INSERT INTO SELECT 或 SELECT INTO :

INSERT INTO Product
SELECT IDENTITY(INT,1,1) AS UID, Product_Area,Product_status
FROM yourTable WHERE ID IN (10001,10002)


SELECT DISTINCT IDENTITY(int, 1, 1) AS UID,
                Spare_value
INTO   Spare
FROM yourTable


SELECT DISTINCT IDENTITY(int, 1, 1) AS UID,
                Service_Time
INTO   Service
FROM yourTable

规范化传入数据

1 个答案: