sql-server - 带 CASE 的 GROUP BY - sql

Question

我有一个如下所示的选择:

SELECT 
        ReportingDate
    ,   PortfolioID
    ,   PortfolioNme

    ,   CASE
            WHEN @ReportType = 'GeoCountry' THEN Infoportal.dbo.fn_Generic_ProperCase(Country)
            WHEN @ReportType = 'GeoEquity'  THEN Region
        END                 AS Country

    ,   RANK() OVER (PARTITION BY PortfolioID ORDER BY SUM(Percentage) DESC, CASE WHEN @ReportType = 'GeoCountry' THEN Country WHEN @ReportType = 'GeoEquity' THEN Region END) AS [Rank]
    ,   SUM(Percentage)     AS [Weight]

FROM @Worktable as WT

WHERE WT.IssueType1 <> '010' AND WT.IssueType2 <> '055'

GROUP BY    WT.ReportingDate
        ,   WT.PortfolioID
        ,   WT.PortfolioNme
        ,   CASE
                WHEN @ReportType = 'GeoCountry' THEN WT.Country
                WHEN @ReportType = 'GeoEquity'  THEN WT.Region
            END     

我想要做的是根据@ReportType 按国家或地区进行分组，并显示百分比和排名的总和。

但是我不断收到错误:

Msg 8120, Level 16, State 1, Line 349
Column '@Worktable.Country' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
Msg 8120, Level 16, State 1, Line 350
Column '@Worktable.Region' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

这太简单了，但我真的很烦。我们将不胜感激。

谢谢

Answer 1

我相信 CTE 会简化您想要做的事情:

;WITH WT AS (
    SELECT 
        ReportingDate
    ,   PortfolioID
    ,   PortfolioNme

    ,   CASE
            WHEN @ReportType = 'GeoCountry' 
              THEN Infoportal.dbo.fn_Generic_ProperCase(Country)
            WHEN @ReportType = 'GeoEquity'  
              THEN Region
        END AS Country
    ,   Percentage
FROM @Worktable
WHERE IssueType1 <> '010' AND IssueType2 <> '055'
)
SELECT 
        ReportingDate
    ,   PortfolioID
    ,   PortfolioNme
    ,   Country
    ,   RANK() OVER (
          PARTITION BY PortfolioID 
          ORDER BY SUM(Percentage) DESC, Country) AS [Rank]
    ,   SUM(Percentage) AS [Weight]
FROM WT
GROUP BY
        ReportingDate
    ,   PortfolioID
    ,   PortfolioNme
    ,   Country