SQL Server总和然后是最大值

如何获得我拥有的总和范围的最大值

电流输出：

Size  |  Format | ColB   | Value
Large |  PCT    | Tmp1   | 23.05
Large |  PCT    | Tmp3   | 109.00
Large |  PCT    | Tmp50  | 3.22
Large |  PCT    | Tmp109 | 987.23
Large |  PCT    | Tmp58  | 455.30

预期产出：

Size  |  Format | ColB   | Value  | Max_Value
Large |  PCT    | Tmp1   | 23.05  | 987.23
Large |  PCT    | Tmp3   | 109.00 | 987.23
Large |  PCT    | Tmp50  | 3.22   | 987.23
Large |  PCT    | Tmp109 | 987.23 | 987.23
Large |  PCT    | Tmp58  | 455.30 | 987.23

如果可能的话，请告诉我。
当前代码如下：

USE DB1

DECLARE @StartDate DATE
DECLARE @EndDate DATE
DECLARE @ColA VARCHAR(10)
DECLARE @ColB VARCHAR(20)
DECLARE @ColC VARCHAR(15)
DECLARE @ColD VARCHAR(15)
DECLARE @ColE VARCHAR(15)
DECLARE @ColF VARCHAR(15)
DECLARE @ColG VARCHAR(15)

BEGIN
SET @StartDate = '01/01/2017'
SET @EndDate = '01/14/2017'
SET @ColA = '%%'
SET @ColB = '%%'
SET @ColC = '%%'
SET @ColD = '%%'
SET @ColE = '%%'
SET @ColF = '%%'
SET @ColG = '%%'
END

SELECT
    'Large' AS [Size]
    ,'PCT' AS [Format]
    ,[ColB]
    ,CAST((SUM([Numerator])/SUM([Denominator]))*100 AS NUMERIC(12,2)) AS [Value]
FROM [Table1] WITH(NOLOCK)
WHERE [Date] BETWEEN @StartDate AND @EndDate
AND [ColA] LIKE @ColA
AND [ColB] LIKE @ColB
AND [ColC] LIKE @ColC
AND [ColD] LIKE @ColD
AND [ColE] LIKE @ColE
AND [ColF] LIKE @ColF
AND [ColG] LIKE @ColG
GROUP BY [ColB]

---

提前谢谢。

使用您的

总和的子查询

，然后使用

MAX

函数获取此信息

SELECT 'Large' AS [Size], 'PCT' AS [Format], [ColB],
CAST((SUM([Numerator])/SUM([Denominator]))*100 AS NUMERIC(12,2)) AS [Value],
    (SELECT MAX(SUBValue) 
    FROM (SELECT [ColB], CAST((SUM([Numerator])/SUM([Denominator]))*100 AS NUMERIC(12,2)) AS [SUBValue]
         FROM [Table1] WITH(NOLOCK)
         WHERE [Date] BETWEEN @StartDate AND @EndDate
         AND [ColA] LIKE @ColA
         AND [ColB] LIKE @ColB
         AND [ColC] LIKE @ColC
         AND [ColD] LIKE @ColD
         AND [ColE] LIKE @ColE
         AND [ColF] LIKE @ColF
         AND [ColG] LIKE @ColG
         GROUP BY [ColB])) AS Max_Value
FROM [Table1] WITH(NOLOCK)
WHERE [Date] BETWEEN @StartDate AND @EndDate
AND [ColA] LIKE @ColA
AND [ColB] LIKE @ColB
AND [ColC] LIKE @ColC
AND [ColD] LIKE @ColD
AND [ColE] LIKE @ColE
AND [ColF] LIKE @ColF
AND [ColG] LIKE @ColG
GROUP BY [ColB]

---

您可以使用如下窗口函数：

SELECT
    'Large' AS [Size]
    ,'PCT' AS [Format]
    ,[ColB]
    ,CAST((SUM([Numerator])/SUM([Denominator]))*100 AS NUMERIC(12,2)) AS [Value]
    ,cast(max(sum([Numerator])/sum([Denominator])) over(partition by null)) as numeric(12,2)) *100 as [MaxValue]
FROM [Table1] WITH(NOLOCK)
WHERE [Date] BETWEEN @StartDate AND @EndDate
AND [ColA] LIKE @ColA
AND [ColB] LIKE @ColB
AND [ColC] LIKE @ColC
AND [ColD] LIKE @ColD
AND [ColE] LIKE @ColE
AND [ColF] LIKE @ColF
AND [ColG] LIKE @ColG
GROUP BY [ColB]

---

我认为它应该适用于您的情况。

在选择列表中添加一个不相关的子查询。这与预期的一样有效。非常感谢。另外一个问题，如果该行的[Value]与[MaxValue]匹配，我如何创建一个新列以返回“Yes”？这只是为了更容易看到，如果不可行，也可以。再次感谢您的帮助。您可以在外部查询中结束此查询，并在那里进行检查：

选择a.*，iif（a.Value=a.MaxValue，'YES'，'NO'）作为匹配项（选择'Large'作为[Size]，'PCT'作为[Format]，[ColB]…groupby[ColB]），作为一个