Question

我有一个查询，其中我试图通过减去一列的总数来获取列 - 其他但我收到错误。这就是我正在做的事情

select LOSA_APP.app_ref_no AS "App.Ref.No.", 
       CODE_BRANCH.branch_name AS "Business Unit",
       ....
        sum(LOSA_FACILITIES.amt_appr) - DOCS_DISB_SIGN_OFF_LOG.sign_off_amt AS "Amount Not Disbursed",
       ...
from
    losa_app LOSA_APP
INNER JOIN
    code_branch CODE_BRANCH
ON
    LOSA_APP.attend_branch = CODE_BRANCH.branch_id
...
where 
    LOSA_APP.app_status='A'; -- Application Status in {‘accepted’}

但我收到错误

ORA-00937: not a single-group group function
00937. 00000 -  "not a single-group group function"
*Cause:    
*Action:
Error at Line: 1 Column: 8

我怎样才能完成这件事？

Answer 1

ORA-00937：不是单组群组功能

原因： SELECT列表不能同时包含组函数，如AVG，COUNT，MAX，MIN，SUM，STDDEV或VARIANCE，以及单个列表达式，除非单个列表达式包含在GROUP BY子句中。

操作：从SELECT列表中删除组函数或单个列表达式，或添加包含列出的所有单个列表达式的GROUP BY子句。

https://www.google.com/search?q=ORA-00937%3A+not+a+single-group+group+function&oq=ORA-00937%3A+not+a+single-group+group+function&sugexp=chrome,mod=6&sourceid=chrome&ie=UTF-8

select LOSA_APP.app_ref_no AS "App.Ref.No.", 
   CODE_BRANCH.branch_name AS "Business Unit",
   ....
    sum(LOSA_FACILITIES.amt_appr) - DOCS_DISB_SIGN_OFF_LOG.sign_off_amt AS "Amount Not Disbursed",
   ...
 from
   losa_app LOSA_APP

 INNER JOIN
   code_branch CODE_BRANCH
 ON
   LOSA_APP.attend_branch = CODE_BRANCH.branch_id
   ...
 GROUP BY LOSA_APP.app_ref_no, LOSA_APP.app_ref_no
 HAVING  LOSA_APP.app_status='A'; -- Application Status in {‘accepted’}

Answer 2

如果每个amt_appr都有一个sign_off，请尝试此操作：

sum(LOSA_FACILITIES.amt_appr - DOCS_DISB_SIGN_OFF_LOG.sign_off_amt)

或这个技巧，其中重复值的AVG是重复值：

sum(LOSA_FACILITIES.amt_appr) - AVG(DOCS_DISB_SIGN_OFF_LOG.sign_off_amt)

我们可以在select子句中应用聚合函数（获取错误：不是单组组函数）

2 个答案: