Oracle Merge 语句中的多列错误

Question

我正在尝试通过 Merge 语句在 oracle 中执行 Upsert。 现在我要合并的表有一个组合的主表， 所以我像这样创建了我的查询：

MERGE INTO CONTINGENT_COMMISSION CC USING
    (SELECT 
        'ad_adavila' CC_PROD_USERID,
        to_number('42.22', '999,999,999.99') CC_COMM_PERCENT,
        to_number('217,904.08', '999,999,999.99') CC_PREMIUM,
        '2' CC_TRIMESTER,
        '2013' CC_YEAR
     FROM DUAL) SRC
    ON (CC.CC_PROD_USERID || CC.CC_TRIMESTER || CC.CC_YEAR = SRC.CC_PROD_USERID || SRC.CC_TRIMESTER || SRC.CC_YEAR) 
WHEN MATCHED THEN
    UPDATE 
      SET CC.CC_COMM_PERCENT = to_number('42.22', '999,999,999.99'),
          CC.CC_PREMIUM = to_number('217,904.08', '999,999,999.99'),
          CC.CC_TRIMESTER = '2',
          CC.CC_YEAR = '2013'
WHEN NOT MATCHED THEN      
    INSERT 
        (CC_PROD_USERID,CC_COMM_PERCENT,CC_PREMIUM,CC_TRIMESTER,CC_YEAR)
      VALUES
        ('ad_adavila',to_number('42.22', '999,999,999.99'),to_number('217,904.08', '999,999,999.99'),'2','2013');

现在，每当我尝试运行此查询时，都会收到以下错误。

ORA-38104：ON 子句中引用的列无法更新：“CC”。“CC_TRIMESTER”

这显然是因为 ON 子句有不止一列；由于组合主键，这在我的情况下是必须的：

CONSTRAINT "CONTINGENT_COMMISSION_PK" PRIMARY KEY ("CC_PROD_USERID", "CC_TRIMESTER", "CC_YEAR")

有没有办法让这个工作？

谢谢，

Answer 1

ORA-38104：ON 子句中引用的列无法更新：“CC”.“CC_TRIMESTER”
您不能在 on 子句中更新用于过滤的列，只需从更新部分中删除此列

merge into CONTINGENT_COMMISSION CC
using (select 'ad_adavila' CC_PROD_USERID,
              to_number('42.22', '999,999,999.99') CC_COMM_PERCENT,
              to_number('217,904.08', '999,999,999.99') CC_PREMIUM,
              '2' CC_TRIMESTER,
              '2013' CC_YEAR
         from DUAL) SRC
on (CC.CC_PROD_USERID || CC.CC_TRIMESTER || CC.CC_YEAR = SRC.CC_PROD_USERID || SRC.CC_TRIMESTER || SRC.CC_YEAR)
when matched then
    update
       set CC.CC_COMM_PERCENT = to_number('42.22', '999,999,999.99'),
           CC.CC_PREMIUM      = to_number('217,904.08', '999,999,999.99')
when not matched then
    insert
        (CC_PROD_USERID, CC_COMM_PERCENT, CC_PREMIUM, CC_TRIMESTER, CC_YEAR)
    values
        ('ad_adavila', to_number('42.22', '999,999,999.99'), to_number('217,904.08', '999,999,999.99'), '2', '2013');