"ORA-00937:不是单组分组功能".在运行我的查询时 [英] "ORA-00937: not a single-group group function" when running my query

问题描述

我正在使用Oracle 10g.我的查询是:

i am using oracle 10g. my query is :

select "Debtor"."DebtorName",
sum(case when regionTable."Text" like '%North%' 
then to_number(count("Registration"."pkRegistrationId")) else 0 end) "North",
 sum(case when regionTable."Text" like '%South%' 
then to_number(count("Registration"."pkRegistrationId")) else 0 end) "South"
from "Registration"
inner join "CustomerRequisition" on "CustomerRequisition"."pkCustomerRequisitionId"="Registration"."fkCustomerRequisitionId"
inner join "EnumerationValue" regionTable on regionTable."pkEnumerationValueId"="CustomerRequisition"."fkRegion"
inner join "Debtor" on "Debtor"."pkDebtorId"="CustomerRequisition"."fkDebtorId"
group by "Debtor"."DebtorName",regionTable."Text","Registration"."pkRegistrationId"

我收到此错误.

ORA-00937: not a single-group group function

我在这里想念什么?

推荐答案

这是您的查询:

select "Debtor"."DebtorName",
       sum(case when regionTable."Text" like '%North%' 
                then to_number(count("Registration"."pkRegistrationId")) else 0
           end) "North",
       sum(case when regionTable."Text" like '%South%' 
                then to_number(count("Registration"."pkRegistrationId")) else 0
           end) "South"
from "Registration" inner join
     "CustomerRequisition
     on "CustomerRequisition"."pkCustomerRequisitionId" = "Registration"."fkCustomerRequisitionId" inner join
     "EnumerationValue" regionTable    
     on regionTable."pkEnumerationValueId"="CustomerRequisition"."fkRegion" inner join
     "Debtor"
     on "Debtor"."pkDebtorId"="CustomerRequisition"."fkDebtorId"
group by "Debtor"."DebtorName", regionTable."Text", "Registration"."pkRegistrationId";

您具有嵌套的聚合功能.尽管Oracle允许这样做，但我怀疑您是否真的打算使用该功能.我的猜测是您真的想要这样的东西:

You have nested aggregation functions. Although Oracle does allow this, I doubt you really intend that feature. My guess is that you really want something like:

select "Debtor"."DebtorName",
       sum(case when regionTable."Text" like '%North%' 
                then 1 else 0
           end) "North",
       sum(case when regionTable."Text" like '%South%' 
                then 1 else 0
           end) "South"
from "Registration" inner join
     "CustomerRequisition"
     on "CustomerRequisition"."pkCustomerRequisitionId" = "Registration"."fkCustomerRequisitionId" inner join
     "EnumerationValue" regionTable    
     on regionTable."pkEnumerationValueId" = "CustomerRequisition"."fkRegion" inner join
     "Debtor"
     on "Debtor"."pkDebtorId" = "CustomerRequisition"."fkDebtorId"
group by "Debtor"."DebtorName";

您可能希望改用count(distinct):

select "Debtor"."DebtorName",
       count(distinct case when regionTable."Text" like '%North%' 
                      then "Registration"."pkRegistrationId"
           end) "North",
       count(distinct case when regionTable."Text" like '%South%' 
                      then "Registration"."pkRegistrationId"
           end) "South"

这篇关于"ORA-00937:不是单组分组功能".在运行我的查询时的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！