oracle - 使用合并更新列时出现错误 : ORA-38104

Question

我正在尝试更新下表中的 BUNDLE_NAME，我的查询是:

MERGE INTO SOURCE S USING 
(SELECT 'MANIFEST_ID' KEY,'CART' BUNDLE_NAME FROM DUAL) D
ON(S.KEY = D.KEY AND S.BUNDLE_NAME = D.BUNDLE_NAME)
WHEN MATCHED THEN UPDATE
SET BUNDLE_NAME = 'EPI';

但它给了我以下错误:

Error report - SQL Error: ORA-38104: Columns referenced in the ON Clause cannot be updated: "S"."BUNDLE_NAME" 38104. 00000 - "Columns referenced in the ON Clause cannot be updated: %s" *Cause: LHS of UPDATE SET contains the columns referenced in the ON Clause**

--我的要求是我只想使用合并语句进行更新--

Answer 1

如果您尝试更新它，则不能在 on 子句中使用 bundle_id。因为它是一个固定值，所以您可以将它放在 where 子句中:

MERGE INTO SOURCE S
USING (SELECT 'MANIFEST_ID' KEY FROM DUAL) D
ON (S.KEY = D.KEY)
WHEN MATCHED THEN UPDATE
SET BUNDLE_NAME = 'EPI'
WHERE S.BUNDLE_NAME = 'CART';

但是你不需要合并，你可以做一个简单的更新:

UPDATE SOURCE S
SET S.BUNDLE_NAME = 'EPI'
WHERE S.KEY = 'MANIFEST_ID'
AND S.BUNDLE_NAME = 'CART';