更新来自 SELECT STATEMENT (Oracle SQL) 的每个结果

Question

我正在尝试编写一个查询来更新 SELECT 语句的每个结果行。

SELECT u.P_ERPNUMBER, a.P_ERPNUMBER
from users u
inner join orders o on o.USERPK = u.PK
inner join addresses a on a.pk = o.PAYMENTADDRESSPK
where o.STATUSPK = 8796095414363 AND a.P_ERPNUMBER is NULL AND o.CODE in ('PL3001442611','PL3051023794');

上述查询返回值 [ u.P_ERPNUMBER ] 我需要用来更新每个字段 [ a.P_ERPNUMBER ]。

我尝试将 SELECT 查询嵌套在如下所示的 UPDATE 语句中，但它返回“多行”错误...它会一个接一个地工作，但我需要它是一个批处理。

UPDATE ADDRESSES
SET P_ERPNUMBER = (
    SELECT u.P_ERPNUMBER
    from users u
    join orders o on o.USERPK = u.PK
    join addresses a on a.pk = o.PAYMENTADDRESSPK
    where a.P_ERPNUMBER is NULL )
where PK in ( SELECT PAYMENTADDRESSPK FROM ORDERS
WHERE STATUSPK = 8796095414363 AND CODE in ('PL3001442611','PL3051023794'));

更新每个a.P_ERPNUMBER 及其加入的u.P_ERPNUMBER 的正确方法是什么？

Answer 1

从子查询中删除连接地址并使用您正在更新的地址表：

UPDATE ADDRESSES a
...
join orders o on o.USERPK = u.PK
WHERE a.pk = o.PAYMENTADDRESSPK
AND a.P_ERPNUMBER is NULL )