连接具有相同主键的表

Question

如何连接具有相同主键的三个表并创建一个视图？任何线索将不胜感激。

我有3个表sttm_customer，sttm_customer_c和sttm_customer_custom，  customer_no与所有人共同拥有。

我需要制作一个视图STVW_CUSTOMER_TEMP合并所有视图。

Answer 1

如果我理解你要做什么，你可以使用UNION：

SELECT customer_no (and any other matching columns)
FROM sttm_customer
UNION 
SELECT customer_no (and any other matching columns)
FROM sttm_customer_c 
UNION customer_no (and any other matching columns)
FROM sttm_customer_custom