Sql 错误3625:分组依据和不能包含聚合函数

我试图在假设的基础上进行计算，所以我假设我可以使用case-when函数来进行计算。例如：

SELECT                                                                                                          
TRIM(EXTRACT(YEAR FROM business_date))||'Q'||TRIM((EXTRACT(MONTH FROM business_date)+2)/3) as year_qtr,                 
case when orr_txt = '1' then  (sum(cast (rr9m as float)) / (sum(cast (total_observations as float)) - 0.5*sum(cast (lft as float)) )) end as  DR_1,
case when orr_txt = '2' then  (sum(cast (rr9m as float)) / (sum(cast (total_observations as float)) - 0.5*sum(cast (lft as float)) )) end as  DR_2,
case when orr_txt = '3' then  (sum(cast (rr9m as float)) / (sum(cast (total_observations as float)) - 0.5*sum(cast (lft as float)) )) end as  DR_3,
avg(cast (dp as float)) as Pred_PD                                  

FROM                                        
     raroc.pd_matrixRR a,                                       
     raroc.ccc_dp_sc  b,
     raroc.ratings_convert c                                        
WHERE                                                                                                   
     start_orr_code in (1)
     and case when a.scorecard_group = 'BB' then 'Business Banking' else a.scorecard_group end= b.rating_sys
     and a.orr_txt = b.bacrr
     and a.orr_txt = c.bacrr_text
     and orr_txt not in ('9-', '10', '11', '12', 'NR')                                      
     and rating_sys_grp = 'Scorecard'
     --and a.orr_txt = '1'
     --and scorecard_group = 'Large Corporation'
     --and scorecard_group = 'Large Corporation_FI'
     --and scorecard_group = 'Middle Market'
     --and scorecard_group = 'BB'
     --and scorecard_group = 'GCSBB'
     --and scorecard_group = 'Real Estate'
      and scorecard_group = 'Individuals'                                       
      and scorecard_group not like 'Sove%'                                      
      and scorecard_group not like 'Lega%'
      --and year_qtr < '2014Q2'                                                                                         
group by 1,2,3,4                            
ORDER BY 2,1

选择
TRIM（摘录（从营业日算起的年份））| |“Q”| TRIM（（摘录（从营业日算起的月份）+2）/3）作为年度qtr，
当orr_txt='1'时，则（求和（将rr9m转换为浮点数））/（求和（将总观测值转换为浮点数））-0.5*求和（将lft转换为浮点数）））结束为DR_1，
当orr_txt='2'时，则（总和（以浮动形式转换为rr9m））/（总和（以浮动形式转换为总观测值））-0.5*总和（以浮动形式转换为lft）））结束为DR_2，
当orr_txt='3'时，则（求和（将rr9m转换为浮点数））/（求和（将总观测值转换为浮点数））-0.5*求和（将lft转换为浮点数）））结束为DR_3，
平均值（铸造（dp为浮动））为预制件
从…起
风险调整资本收益率，
风险调整资本收益率，
风险调整资本收益率
哪里
在（1）中启动或禁用代码
当a.scorecard\u group='BB'然后是'Business Banking'，否则a.scorecard\u group end=b.rating\u sys
和a.orr_txt=b.bacrr
和a.orr_txt=c.bacrr_text
和orr_txt不在（'9-'、'10'、'11'、'12'、'NR'中）
和评级系统grp=‘记分卡’
--和a.orr_txt='1'
--和记分卡组=‘大公司’
--和记分卡组=‘大公司’
--和记分卡组=‘中间市场’
--和记分卡组='BB'
--和记分卡组='GCSBB'
--和记分卡组=‘房地产’
和记分卡组=‘个人’
而记分卡组不像“Sove%”
而记分卡组不像“Lega%”
--以及2014年第四季度<'2014年第二季度'
按1,2,3,4分组
按2,1的顺序排列

它显然没有编译并嘲笑我的逻辑。但是，如果我不将其分组，我将得到一个错误3604。问题是，为了计算1类、2类和3类的利率，我将如何处理这个问题。 非常感谢

SP

您必须按

group by 
TRIM(EXTRACT(YEAR FROM business_date))||'Q'||TRIM((EXTRACT(MONTH FROM business_date)+2)/3)
, orr_txt

---

您需要将案例移动到聚合函数中，如下所示：

       (sum(case when orr_txt = '1' then cast (rr9m as float) end)
     / (sum(case when orr_txt = '1' then cast (total_observations as float) end)
  - 0.5*sum(case when orr_txt = '1' then cast (lft end as float) end ) )) end as  DR_1,

---

我想你只需要条件聚合。这些条件位于聚合函数内部。我认为这是您想要的表达式（当然，每个值重复3次：

SELECT . . .
       (sum(case when orr_txt = '1' then cast(rr9m as float) end) /
        sum(case when orr_txt = '1' then cast(total_observations as float) end) -
        0.5 * sum(case when orr_txt = '1' then cast(lft as float) end)
       ) as DR_1, . . .

---

然后，您可以将

groupby

更改为

groupby 1

您应该学会使用正确的显式

JOIN

语法。谢谢！非常有用！谢谢！非常有用！