Question

我上了oracle-server ORA-01732。这个ORA还有其他任何问题，但它对我的情况没有帮助。

我选择了两个表中的一些数据，并将这些内容分组为：

SELECT  SUM (LG_ALL.HOURS) AS hour_sum,
            TO_CHAR (LG_ALL.WORK_DATE, 'YYYY.MM') AS singel_month,
            LG_ALL.EXPORTED
       FROM USER usr, 
            USER_ALLWC LG_ALL, 
      WHERE usr.user_id = LG_ALL.user_id            
            AND LG_ALL.EXPORTED = 'N'   
     GROUP BY 
            TO_CHAR (LG_ALL.WORK_DATE, 'YYYY.MM'),
            LG_ALL.EXPORTED
   ORDER BY usr.LOGNAME DESC

下一步，我必须设置表USER_ALLWC：

LG_ALL.EXPORTED =＆＃39; Y＆＃39;

因此，我将它包装成update-statement之类的 updates-based-on-queries => Inline View Method：

UPDATE (   SELECT  SUM (LG_ALL.HOURS) AS hour_sum,
                TO_CHAR (LG_ALL.WORK_DATE, 'YYYY.MM') AS singel_month,
                LG_ALL.EXPORTED
           FROM USER usr, 
                USER_ALLWC LG_ALL, 
          WHERE usr.user_id = LG_ALL.user_id            
                AND LG_ALL.EXPORTED = 'N'   
         GROUP BY 
                TO_CHAR (LG_ALL.WORK_DATE, 'YYYY.MM'),
                LG_ALL.EXPORTED
       ORDER BY usr.LOGNAME DESC ) allg
SET allg.EXPORTED = 'Y';

可悲的是，我得到了ORA-01732。任何人都可以解释，当我可以更新select语句，我该如何解决它？

Answer 1

来自Oracle SQL Language Reference：

视图不得包含以下任何构造：



集合运算符



DISTINCT运算符



汇总或分析功能



...

尝试简化它 - sum，group by等等，无论如何都不添加任何价值：

UPDATE (   SELECT  LG_ALL.EXPORTED
           FROM USER usr, 
                USER_ALLWC LG_ALL, 
          WHERE usr.user_id = LG_ALL.user_id            
                AND LG_ALL.EXPORTED = 'N'   
       ) allg
SET allg.EXPORTED = 'Y';

只要有USER_ALLWC到USER的外键，就可以使用。

事实上，假设这样的外键，整个陈述相当于：

UPDATE USER_ALLWC
   SET EXPORTED = 'Y'
 WHERE EXPORTED = 'N';

更新选择ORA-01732

1 个答案: