SQL Server：第一次使用pivot从Dynamic SQL转到表

Question

我正在尝试创建一个数据透视表，其中列出了时间范围（responseText）作为列，并根据提出的问题在该特定列下显示每个字符的平均答案。我试图用PIVOT函数来做这件事 - 无济于事。

我有下表

我首先创建一个临时表并使用存储过程中的值填充它，然后我构建一个动态查询

CREATE TABLE #Data
(
    QuestionText varchar(400), 
    ResponseText varchar(200),
    AverageAnswer float

)

INSERT INTO #Data
    EXECUTE AverageDemographicGroupAnswer @GroupID, @Survey, @Demographic

--SELECT * FROM #Data
DECLARE @PivotQuery NVARCHAR(MAX)
DECLARE @Cols varchar(max)

SET @Cols =  STUFF((SELECT distinct ',' + QUOTENAME(ResponseText,'[]') FROM dbo.SurveyResponses WHERE QuestionID = @Demographic  FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,1,'')
 --SELECT @Cols

SET @PivotQuery = 'SELECT QuestionText, '+ @Cols +' FROM 
    (
        SELECT QuestionText, ResponseText, AverageAnswer FROM #Data
    )x  
    PIVOT
    ( AverageAnswer FOR ResponseText in (' + @Cols + ')
    )p'
--select @PivotQuery
EXECUTE(@PivotQuery)

DROP TABLE #Data

产生此查询

SELECT QuestionText, [At least 1 year but less than 3 years],[At least 3 years but less than 5 years],[Less than 1 year],[More than 5 years] FROM (SELECT QuestionText, AverageAnswer, ResponseText FROM #Data) AS SourceTable 
PIVOT( AverageAnswer FOR ResponseText in ([At least 1 year but less than 3 years],[At least 3 years but less than 5 years],[Less than 1 year],[More than 5 years])) AS PivotTable 

但它正在返回此错误

  

关键字“FOR”附近的语法不正确。

这是我第一次创建一个支点，我不确定是什么问题