Sql 按多列分组，在第一列按列分组求和

我正在编写一个在两列上分组的查询。这意味着，它将把Col1和Col2放在同一组中

如何根据组Col1计算记录的总和

到目前为止，我有：

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谢谢

我可以按如下方式解决它：

WITH cteActivityIds (activityId, allDocuByActivity)
AS
  (SELECT activityId, COUNT(*) AS allDocuByActivity FROM #ER GROUP BY activityId)
SELECT
      E.activityId AS [Actiivty ID],
      docuType AS [Docu Type],
      COUNT(docuType),
      CONVERT(DECIMAL(16,2), (COUNT(docuType) * 100.00 / t.allDocuByActivity)) [Total     DocuType in Activity],
      SUM(CASE WHEN [sent] != '1-1-1900' THEN 1 END) AS [Sent],
      SUM(CASE WHEN [approved] != '1-1-1900' THEN 1 END) AS [Approved]
FROM
      #ER AS E
INNER JOIN cteActivityIds AS t 
  ON E.activityId = t.activityId
GROUP BY
     E.activityId, docuType, t.allDocuByActivity

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谢谢

在我看来，这是一个看起来更干净的解决方案-它不需要连接，并使用“分区依据”来计算单个计数：

WITH activityCounts as (
    select
        activityId,
        docuType,
        count(activityId) OVER(PARTITION BY activityId) as activityIdCount,
        count(docuType) OVER(PARTITION BY activityId, docuType) as docuTypeCount,
        SUM(CASE WHEN [sent] != '1-1-1900' THEN 1 END) OVER(PARTITION BY activityId, docuType) AS [Sent],
        SUM(CASE WHEN [approved] != '1-1-1900' THEN 1 END) OVER(PARTITION BY activityId, docuType) AS [Approved]
    from ER
)
SELECT
    activityId,
    docuType,
    docuTypeCount,
    CONVERT(DECIMAL(16,2), (COUNT(docuTypeCount) * 100.00 / activityIdCount)) as [Total DocuType in Activity],
    [Sent],
    [Approved]
FROM activityCounts
GROUP BY
    activityId,
    docuType,
    activityIdCount,
    docuTypeCount,
    [Sent],
    [Approved]

---

这里有一个

您只需要在

t.alldocubyaActivity上放置一个聚合函数

MIN(t.allDocuByActivity) AS [Total DocuType in Activity],

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但是，由于您的标签是

DocuType

。您不需要

DISTINCT

？

所需的输出是什么？对于每一行，我想显示单个活动Id中的文档类型总数。