Oracle查詢

Question

我有低於Oracle查詢：

SELECT 
* 
FROM 
WA_GA_TBL_ACTIVITY A, 
WA_GA_TBL_USERS U 
WHERE 
A.USERID_FK = U.USERID AND 
(A.GROUPID_FK = 'GR0001' OR U.GROUPID_FK = 'GR0001') AND 
A.USERID_FK != 'US0007' AND 
(A.ACTIVITYID) NOT IN(SELECT ACTIVITYID_FK FROM WA_GA_TBL_ACCESSACTIVITY 
WHERE USERID_FK = 'US0007' 

第一個邏輯WA_GA_TBL_ACTIVITY當用戶ID = US0007檢查！ 現在我想在NOT IN用戶詳細信息：

NOT IN(SELECT ACTIVITYID_FK FROM WA_GA_TBL_ACCESSACTIVITY 
WHERE USERID_FK = 'US0007' 

當userid_fk = US0007

我想是這樣的：

SELECT 
* 
FROM 
WA_GA_TBL_ACTIVITY A, 
WA_GA_TBL_USERS U 
WHERE 
A.USERID_FK = U.USERID AND 
(A.GROUPID_FK = 'GR0001' OR U.GROUPID_FK = 'GR0001') AND 
A.USERID_FK != 'US0007' AND 
(A.ACTIVITYID) NOT IN(SELECT S.USERID, S.DATEADDED, W.ACTIVITYID_FK FROM WA_GA_TBL_USERS S, WA_GA_TBL_ACCESSACTIVITY 
W 
WHERE S.USERID = W.USERID_FK AND W.USERID_FK = 'US0007') 

遇到錯誤：

ORA-00913: too many values 

樣品數據

表WA_GA_TBL_ACTIVITY

ACTIVITYID | ACTIVITYNAME | USERID_FK | ACTIVITYDATE | GROUPID_FK 
001  | add new user | US0001 | 4/6/2017  | GR0001 

表WA_GA_TBL_USERS

USERID | USERNAME | DATEADDED 
US0001 | testuser1| 4/6/2017 
US0007 | testuser2| 4/6/2017 

表WA_GA_TBL_ACCESSACTIVITY

ACTIVITYID_FK | USERID_FK 

有沒有辦法做到這一點？

Answer 1

IN子查詢的投影中的列數必須與謂詞引用的數字相匹配。你得到ORA-00913: too many values錯誤，因爲(A.ACTIVITYID)不符合(SELECT S.USERID, S.DATEADDED, W.ACTIVITYID_FK。

所有你需要做的是歸屬關係

SELECT 
     * 
FROM 
WA_GA_TBL_ACTIVITY A, 
WA_GA_TBL_USERS U 
WHERE 
A.USERID_FK = U.USERID AND 
(A.GROUPID_FK = 'GR0001' OR U.GROUPID_FK = 'GR0001') AND 
A.USERID_FK != 'US0007' AND 
(A.ACTIVITYID) NOT IN (SELECT W.ACTIVITYID_FK 
         FROM WA_GA_TBL_USERS S, 
          WA_GA_TBL_ACCESSACTIVITY W 
          WHERE S.USERID = W.USERID_FK 
          AND W.USERID_FK = 'US0007') 

好像你可以簡化子查詢到這個

(SELECT W.ACTIVITYID_FK 
    FROM WA_GA_TBL_ACCESSACTIVITY W 
    WHERE W.USERID_FK = 'US0007') 

但你知道你的業務邏輯比我好。