Question

所以我有一堆数据，我已按照列名和月分组了。这是我到目前为止的SQL查询

TestName是列名，每列POE业务规则/提交多次出现 VExecutionGlobalHistory是表的名称，我正在使用Microsoft SQL Server Management Studio 2010

    select  
   year(dateadd(mm,datediff(mm,0,StartTime),0)),
    datename(month,dateadd(mm,datediff(mm,0,StartTime),0)),TestName,

    Case WHEN Testname = 'POE Business Rules' THEN (count(TestName)*36) WHEN TestName =         'Submit' THEN (count(TestName)*6) ELSE 0 END

    From VExecutionGlobalHistory

    group by
    year(dateadd(mm,datediff(mm,0,StartTime),0)),
    datename(month,dateadd(mm,datediff(mm,0,StartTime),0)),TestName

此查询为我提供了此格式

  2013 |APRIL| POE Business Rules| 1044
  2013 |APRIL| SUBMIT            | 96
  2013 |JULY | POE Business Rules| 216
  2013 |JULY | SUBMIT            | 102

我希望有一个最终格式，其中每个月只有计数总和

   2013|APRIL|SUM of the counts or (1044 + 96)
   2013|JULY |SUM of the counts or (216 + 102)

我不需要testname只是每月计数的总和

我试过在案件之前添加SUM，但我得到了 "Cannot perform an aggregate function on an expression containing an aggregate or a subquery."错误。

有关其他方法的任何建议吗？

Answer 1

您可以使用子查询：

SELECT Year_, Month_, SUM(Counts)
FROM (
        SELECT YEAR(DATEADD(MM,DATEDIFF(MM,0,StartTime),0))'Year_'
              ,DATENAME(MONTH,DATEADD(MM,DATEDIFF(MM,0,StartTime),0))'Month_'
              ,TestName
              ,CASE WHEN Testname = 'POE Business Rules' THEN (count(TestName)*36) 
                    WHEN TestName = 'Submit' THEN (COUNT(TestName)*6) 
                    ELSE 0 
               END 'Counts'
        FROM VExecutionGlobalHistory
        GROUP BY YEAR(DATEADD(MM,DATEDIFF(MM,0,StartTime),0))
                ,DATENAME(MONTH,DATEADD(MM,DATEDIFF(MM,0,StartTime),0))
                ,TestName
        )sub
GROUP BY Year_, Month_
ORDER BY CAST(CAST(Year_ AS CHAR(4)) + Month_ + '01' AS DATETIME)

更新：添加ORDER BY以按年份/月份排序最早。

Answer 2

像

这样的东西

Select SumYear,SomeMonth,Sum(SumCounts) From
(
select  
   year(dateadd(mm,datediff(mm,0,StartTime),0)) as SumYear,
    datename(month,dateadd(mm,datediff(mm,0,StartTime),0)) as SumMonth,TestName,

    Case WHEN Testname = 'POE Business Rules' THEN (count(TestName)*36) WHEN TestName =         'Submit' THEN (count(TestName)*6) ELSE 0 END as sumCounts

    From VExecutionGlobalHistory

    group by
    year(dateadd(mm,datediff(mm,0,StartTime),0)),
    datename(month,dateadd(mm,datediff(mm,0,StartTime),0)),TestName ) sums
Group by SumYear,SumMonth

应该这样做

Answer 3

您的逻辑可能过于复杂。听起来你只想要按（年，月）分组的加权和。具有“POE业务规则”的行和＃39;值得36，行＆＃39;提交＆＃39;值得6，其他所有值都是0。

SELECT
  YEAR(StartTime),
  DATENAME(month,DATEADD(month,MONTH(StartTime)-1,0)),
  SUM(
    CASE Testname
      WHEN 'POE Business Rules' THEN 36
      WHEN 'Submit'             THEN 6
      ELSE 0
    END
  )
FROM VExecutionGlobalHistory
GROUP BY YEAR(StartTime),MONTH(StartTime)
ORDER BY YEAR(StartTime),MONTH(StartTime)

SQL Sum（Count）的特定列和组SUM按月

3 个答案: