SQL Server中的pivot varchar列？

Question

我試圖將一些結果放入數據透視表但沒有得到預期的結果。在這里我已經把代碼和結果。

DECLARE @TblIdeaCategory TABLE 
(
IdeaImplement varchar(2000),
IdeaCategory varchar(2000)
)

INSERT INTO @TblIdeaCategory values('Metrics Feedback One  #1','MetricFeedback')
INSERT INTO @TblIdeaCategory values('Metrics Feedback Two #1','MetricFeedback')
INSERT INTO @TblIdeaCategory values('Analysis Feedback One #1','AnalysisFeedback')
INSERT INTO @TblIdeaCategory values('Analysis Feedback Two #1','AnalysisFeedback')
INSERT INTO @TblIdeaCategory values('Idea Generation Feedback One #1','IdeaGenerationFeedback')
INSERT INTO @TblIdeaCategory values('Idea Generation Feedback Two #1','IdeaGenerationFeedback')


select 
 IdeaGenerationFeedback,AnalysisFeedback,MetricFeedback from 

(select IdeaImplement,IdeaCategory
 from  @TblIdeaCategory as board
 ) resultTable
pivot (
 max(IdeaImplement)  for IdeaCategory in (IdeaGenerationFeedback,AnalysisFeedback,MetricFeedback))  as resultpivot


 select  IdeaImplement,IdeaCategory from @TblIdeaCategory

Answer 1

以下查詢應該執行您想要的操作：

DECLARE @TblIdeaCategory TABLE 
(
IdeaImplement varchar(2000),
IdeaCategory varchar(2000)
)

INSERT INTO @TblIdeaCategory values('Metrics Feedback One  #1','MetricFeedback')
INSERT INTO @TblIdeaCategory values('Metrics Feedback Two #1','MetricFeedback')
INSERT INTO @TblIdeaCategory values('Analysis Feedback One #1','AnalysisFeedback')
INSERT INTO @TblIdeaCategory values('Analysis Feedback Two #1','AnalysisFeedback')
INSERT INTO @TblIdeaCategory values('Idea Generation Feedback One #1','IdeaGenerationFeedback')
INSERT INTO @TblIdeaCategory values('Idea Generation Feedback Two #1','IdeaGenerationFeedback')


select 
 IdeaGenerationFeedback,AnalysisFeedback,MetricFeedback from 

(select IdeaImplement,IdeaCategory,ROW_NUMBER() OVER(PARTITION BY IdeaCategory ORDER BY (SELECT 1)) AS RNO
 from  @TblIdeaCategory as board
 ) resultTable
pivot (
MAX(IdeaImplement)  for IdeaCategory in (IdeaGenerationFeedback,AnalysisFeedback,MetricFeedback))  as resultpivot

結果如下，

IdeaGenerationFeedback            AnalysisFeedback           MetricFeedback
Idea Generation Feedback One #1   Analysis Feedback One #1   Metrics Feedback One #1
Idea Generation Feedback Two #1   Analysis Feedback Two #1   Metrics Feedback Two #1

Answer 2

我認為你實際上想要在這里使用UNPIVOT而不是PIVOT ，但無論如何你可以使用一系列聯盟，無論如何它們可能會表現得更好。

SELECT IdeaGenerationFeedback AS IdeaImplement, 'IdeaGenerationFeedback' AS IdeaCategory
FROM yourOriginalTable
UNION ALL
SELECT AnalysisFeedback, 'AnalysisFeedback' FROM yourOriginalTable
UNION ALL
SELECT MetricFeedback, 'MetricFeedback' FROM yourOriginalTable;