SQL - 案例中的选择

Question

我有一个代码可以为 "moving" 宇宙产生所需的输出，它查看每个时期并给我 information.I 希望有另一个产生相同输出的查询但是对于不同的选择，"current" 宇宙。

当前的 universe 会像现在一样计算总和，但只针对在数据库中最新日期符合标准的公司。

现在，对于 2015 年 Market_Cap 介于 0 和 10000 之间的公司，代码会产生 EBIT/Sales 2015 等等，但我宁愿希望它为那些公司产生 EBIT/Sales 2015当前 Market_Cap 在 0 到 10000 之间（Market_Cap 中的最新 date_month）

我正在使用 Microsoft SQL Server Management Studio

我尝试在 sum(case when ... then) 语法中插入另一个条件作为 "And c.company_id in(Select company_id from Market_cap 其中 Market_Cap 在 0 和 10000 之间并且 Date = '2017-06-30)) 但我得到错误：

无法对包含聚合或子查询的表达式执行聚合函数。

现在编码：

 select m.date_month     
     ,sum(case when y.date_year = 2015 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 AND mm.Market_Cap between 0 and 10000 then n.EBIT end) / sum(case when y.date_year = 2015 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 AND mm.Market_Cap between 0 and 10000 then s.Sales end) as 'EBIT/Sales 2015'  
     ,sum(case when y.date_year = 2016 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 AND mm.Market_Cap between 0 and 10000 then n.EBIT end) / sum(case when y.date_year = 2016 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 AND mm.Market_Cap between 0 and 10000 then s.Sales end) as 'EBIT/Sales 2016'  
     ,sum(case when y.date_year = 2017 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 AND mm.Market_Cap between 0 and 10000 then n.EBIT end) / sum(case when y.date_year = 2017 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 AND mm.Market_Cap between 0 and 10000 then s.Sales end) as 'EBIT/Sales 2017'  
 from  EBIT   as n  
     inner join  Sales   as s on  s.company_id = n.company_id  
                             and s.date_month_id = n.date_month_id  
                             and s.date_year_id = n.date_year_id  
     inner join date_year as y on y.date_year_id = n.date_year_id  
     inner join date_month as m on m.date_month_id = n.date_month_id 
     inner join Market_Cap as mm on mm.Date_Month_Id = n.Date_Month_Id
                             and mm.Company_Id = n.Company_Id
     inner join Company as c on c.Company_Id = n.Company_Id
 where y.date_year between   2015  and   2017     
     and n.EBIT<> 0  
     and s.Sales<> 0 
 group by m.date_month;

正确输出：

Answer 1

您在此处包含的唯一代码是选择代码，而不是实际根据市值进行筛选的代码。您不想更改这些行吗：

inner join Market_Cap as mm on mm.Date_Month_Id = n.Date_Month_Id
                         and mm.Company_Id = n.Company_Id

将 mm.Date_Month_Id 与 max(Date_Month_Id)?

进行比较

Answer 2

正确查询（我认为）：

 select m.date_month     
     ,sum(case when y.date_year = 2015 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 then n.EBIT end) / sum(case when y.date_year = 2015 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 then s.Sales end) as 'EBIT/Sales 2015'  
     ,sum(case when y.date_year = 2016 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 then n.EBIT end) / sum(case when y.date_year = 2016 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 then s.Sales end) as 'EBIT/Sales 2016'  
     ,sum(case when y.date_year = 2017 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 then n.EBIT end) / sum(case when y.date_year = 2017 AND c.Country_Id in (4,5,6) AND c.factSet_Level1_Id between 1 and 100 then s.Sales end) as 'EBIT/Sales 2017'  
 from  EBIT   as n  
     inner join  Sales   as s on  s.company_id = n.company_id  
                             and s.date_month_id = n.date_month_id  
                             and s.date_year_id = n.date_year_id  
     inner join date_year as y on y.date_year_id = n.date_year_id  
     inner join date_month as m on m.date_month_id = n.date_month_id 
     inner join Market_Cap as mm on mm.Date_Month_Id = n.Date_Month_Id
                             and mm.Company_Id = n.Company_Id
     inner join Company as c on c.Company_Id = n.Company_Id
 where y.date_year between   2015  and   2017 and c.Company_Id in (Select Company_Id from Market_Cap Where Market_Cap between 0 and 1000) 
     and n.EBIT<> 0  
     and s.Sales<> 0 
 group by m.date_month
 order by m.Date_Month asc;

SQL - 案例中的选择

SQL - Selection within Case when

sum

case-when

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