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遇到这个问题，想找人帮我解决。我认为在程序代码中解决问题会更容易，但我开始重新考虑这个想法。

PIVOT使用从语句中提取数据的 SQL 查询，SELECT其中一个字段[Cat_Entries]是用作单元格标签的硬编码值。Cat_Entries 的值是使用COUNT(EventGUID)和/或CAST(SUM(Duration) AS varchar(10)) AS TotalRepairTime在相同句子中计算的。

从SELECT下面的语句中，您可以看到使用UNION三个查询中的一个来生成输出。但是，如果“子查询”作为计算结果没有返回值。然而，要求是 [Cat_Entries]无论值如何都显示标签。

以下是数据现在的样子：

Cat     Cat Entries           6/1/2012  7/1/2012  8/1/2012  9/1/2012
------  --------------------  --------  --------  --------  --------
00000A  Critical Down Time       1       
00000A  Critical Outage          1       
00000A  Total Repair Time        65         
00000B  Critical Down Time                                     6
00000B  Total Repair Time                                      90
00000C  Critical Down Time       1          5    
00000C  Critical Outage          1          5    
00000C  Total Repair Time        30         240    
00000D  Critical Down Time                                     2     
00000E  Critical Down Time                          1    
00000G  Critical Down Time                                     1    
00000M  Critical Down Time        1                            3    
00000M  Critical Outage           1                 3    
00000M  Total Repair Time         60                180

...这就是所需输出的样子（** 表示插入的空行）：

    Cat     Cat Entrie s          6/1/2012  7/1/2012  8/1/2012  9/1/2012
    ------  --------------------  --------  --------  --------  --------
    00000A  Critical Down Time       1       
    00000A  Critical Outage          1       
    00000A  Total Repair Time        65         
    00000B  Critical Down Time                                     6
**  00000B  Critical Outage          
    00000B  Total Repair Time                                      90
    00000C  Critical Down Time       1          5    
    00000C  Critical Outage          1          5    
    00000C  Total Repair Time        30         240 
    00000D  Critical Down Time                                     2   
**  00000D  Critical Outage          
**  00000D  Total Repair Time

这是存储过程PIVOT：

SELECT @cols = STUFF(( SELECT DISTINCT TOP 100 PERCENT '],[' + cast([Year] as varchar(4))
FROM  vCatCountByMonthYear  where SiteGUID = @SiteGuid 
and [Year] BETWEEN @StartDate AND @StopDate ORDER BY '],[' + cast([Year] as varchar(4)) 
FOR XML PATH('') ), 1, 2, '') + ']' 

SET @query = N'SELECT Cat,[Cat_Entries], ' + @cols +' FROM (SELECT Cat,[Year],
[Cat_Entries],Value,OrderBy FROM vCatCountByMonthYear 
where SiteGUID = ' + CHAR(39) + CONVERT(nvarchar(36), @SiteGuid) + CHAR(39) + ' and 
[Year] BETWEEN ' + CHAR(39) + @StartDate + CHAR(39) + ' AND ' + CHAR(39) + 
@StopDate + CHAR(39) + ' ) p PIVOT ( Sum ([Value] ) FOR [Year] IN ( '+ @cols +' ) ) 
AS pvt ORDER BY Cat,OrderBy' 

execute(@query)

...这是VIEW存储过程使用的：

SELECT SiteGUID, Cat_Entries, EntriesCount AS Value, 
       CONVERT(date, CAST(Month AS varchar(2)) + '-1-' + CAST(Year AS varchar(4))) AS MonthYear, 
       Month, Year, OrderBy, Cat, EventId
FROM (SELECT SiteGUID, 'Critical Down Time' AS Cat_Entries, COUNT(EventGUID) AS EntriesCount,
             Month, Year, 1 AS OrderBy, Cat, EventId
FROM dbo.vCatCountTotalEntries
GROUP BY SiteGUID, Month, Year, Cat, EventId

UNION
      SELECT SiteGUID, 'Critical Outage' AS Cat_Entries, COUNT(EventGUID) AS EntriesCount,
             Month, Year, 2 AS OrderBy, Cat, EventId
      FROM   dbo.vCatCountEqpEntries
      GROUP BY SiteGUID, Cat, Month, Year, Cat, EventId
UNION
      SELECT SiteGUID, 'Total Repair Time' AS Cat_Entries, 
             CAST(SUM(Duration) AS varchar(10)) AS TotalRepairTime, Month, Year, 3 AS OrderBy,
             Cat, EventId
      FROM   dbo.vCatCountOnEqpRprTm
      GROUP BY SiteGUID, Cat, Month, Year, Cat, EventId) AS W

一如既往，我感谢您的时间和努力！R。

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1 回答 1

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因此，为了获得额外的行，您的主要选择查询必须能够考虑它们，这意味着您无法将它们过滤掉。

您当前在 startdate 和 stopdate 之间执行 [Year]，因此您的初始结果集只会包含日期之间的值。不要在那里限制它，而是让你的 PIVOT 为你做那个限制。

所以你应该做的唯一改变就是把你的年份过滤器从你的主要选择中去掉，你应该会看到你正在寻找的结果，我相信。

这是一个例子来说明我的意思：

    CREATE TABLE #years(year_name VARCHAR(20), year_actual int)
            --Insert three years
    INSERT INTO #years
            ( year_name, year_actual )
    SELECT 'rat', -- year_name - varchar(20)
              1924  -- year_actual - int
    UNION ALL
    SELECT 'ox',
              1925
    UNION ALL
    SELECT 'tiger',
              1926

            --I only care about two of those years
    SELECT year_name, [1924], [1925]
    FROM
            --I need to select all the years so that all three rows show
    (SELECT year_name, year_actual FROM #years) yr
    PIVOT
            --Here I select the years I actually care to count
    (COUNT(year_actual) FOR year_actual IN ([1924], [1925])) pvt

结果：

     --Now I pulled all three rows, with 'dragon' having zero rows
    ox  0   1
    rat 1   0
    tiger   0   0
于 2013-03-07T22:37:42.767 回答