我有一个具有这种结构的表:
我使用这个脚本来查询请求:
SELECT D.DELIVERY_REQUEST_ID AS "REQUEST_ID",
'Delivery' AS "REQUEST_TYPE"
FROM DELIVERY_REQUEST D
UNION
SELECT I.INVOICE_REQUEST_ID AS "REQUEST_ID",
'Invoice' AS "REQUEST_TYPE"
FROM INVOICE_TRX I
结果将是这样的:
REQUEST_ID | REQUEST_TYPE
__________________|____________________
|
1 | Delivery
1 | Invoice
2 | Delivery
2 | Invoice
我想要做的是在开始时使用唯一键(应该是 INT 并且像自动编号)查询(或创建视图),如下所示:
ID | REQUEST_ID | REQUEST_TYPE
____|________________|____________________
| |
1 | 1 | Delivery
2 | 1 | Invoice
3 | 2 | Delivery
4 | 2 | Invoice
先感谢您。