Question

我每周都会收到以下示例SQL数据。

    IF OBJECT_ID ('[tempdb].[dbo].[##GetSummaryColtSpotQusAns]') IS NOT NULL
    DROP TABLE [dbo].[##GetSummaryColtSpotQusAns]

CREATE TABLE [dbo].[##GetSummaryColtSpotQusAns] (
     [CourseWeek] [int] NULL
    ,[QuestionID] [int] NULL
    ,[QuestionGroupID] [int] NULL
    ,[QuestionType] [varchar](100) NULL
    ,[Question] [varchar](1000) NULL
    ,[Text] [varchar](1000) NULL
    ,[Value] [int] NULL
    ,[IsScore] [bit] NULL
    ,[AnswerScoreOrChoice] [int] NULL
    )

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1083,1,'Label','Assess',NULL,NULL,NULL,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1084,1,'DropDown','Do you have any concerns?','No',2,1,NULL
INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1084,1,'DropDown','Do you have any concerns?','Not Applicable',-1,1,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1084,1,'DropDown','Do you have any concerns?','Yes',1,1,1

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1085,1,'DropDown','Area Of Concern','Accuracy Of Scoring and Feedback',4,0,4

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1085,1,'DropDown','Area Of Concern','All',1,0,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1085,1,'DropDown','Area Of Concern','Course Access',2,0,2

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1085,1,'DropDown','Area Of Concern','Timely Submission',3,0,3

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1086,2,'Label','Coach',NULL,NULL,NULL,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1087,2,'DropDown','Do you have any concerns?','No',2,1,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1087,2,'DropDown','Do you have any concerns?','Not Applicable',-1,1,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1087,2,'DropDown','Do you have any concerns?','Yes',1,1,1

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1088,2,'DropDown','Area Of Concern','All',1,0,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1088,2,'DropDown','Area Of Concern','Communication',3,0,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1088,2,'DropDown','Area Of Concern','Rubric Misuse',2,0,NULL

INSERT INTO [dbo].[##GetSummaryColtSpotQusAns]
SELECT 1,1089,3,'Label','Engage',NULL,NULL,NULL,NULL

尝试枢轴生成低于预期的数据集数据，但是我没有获得预期的结果。

    DECLARE @ExpectedResult TABLE (CourseWeek int,  [Area Lable] varchar(100), [Concerns DDL] varchar(50), [Area DDL] varchar(500))
INSERT INTO @ExpectedResult VALUES (1 ,'Assess','Yes','Accuracy Of Scoring and Feedback,Course Access,Timely Submission')
INSERT INTO @ExpectedResult VALUES (1 ,'Coach','Yes',NULL)
INSERT INTO @ExpectedResult VALUES (1 ,'Engage',NULL,NULL)

SELECT * FROM @ExpectedResult

enter image description here

我试图获得与image / @ ExpectedResult表数据中突出显示的结果相似的结果。但是我正在获得其他NULL行。在删除[QuestionID]后部分解决了我的问题，但是仍然获得Null值，请在下面找到更新的Pivot查询。

    SELECT [CourseWeek]
    ,[Area Reviewed]
    ,[Concerns DDL]
    ,[Area]
FROM (
    SELECT DISTINCT [CourseWeek],
        CASE 
            WHEN [QuestionGroupID] = 1
                THEN 'Assess'
            WHEN [QuestionGroupID] = 2
                THEN 'Coach'
            WHEN [QuestionGroupID] = 3
                THEN 'Engage'
            WHEN [QuestionGroupID] = 4
                THEN 'Support'
            END [Area Reviewed],
        'Concerns DDL' AS [ConQuestionType],
        'Area' AS [AreaQuestionType],
        CASE 
            WHEN [AnswerScoreOrChoice] = 1
                AND [Question] = 'Do you have any concerns?'
                THEN 'Yes'
            WHEN [AnswerScoreOrChoice] > 1
                AND [Question] = 'Do you have any concerns?'
                THEN 'No'
            END [Concerns (Yes/No)],
        AreaOfConcerns = (
            STUFF((
                    SELECT ',' + DS2.[Text]
                    FROM [dbo].[##GetSummaryColtSpotQusAns] DS2
                    WHERE DS2.[QuestionID] = DS1.[QuestionID]
                        AND DS2.[QuestionType] = DS1.[QuestionType]
                        AND DS2.[CourseWeek] = DS1.[CourseWeek]
                        AND DS2.[Question] = 'Area Of Concern'
                        AND DS2.[Text] <> 'All'
                    FOR XML PATH(''),
                        TYPE
                    ).value('.', 'varchar(max)'), 1, 1, '')
            )
    FROM [dbo].[##GetSummaryColtSpotQusAns] DS1
    WHERE (
            [AnswerScoreOrChoice] IS NOT NULL
            OR [QuestionType] = 'Label'
            )

    ) AS SRC
PIVOT(MAX([Concerns (Yes/No)]) FOR [ConQuestionType] IN ([Concerns DDL])) AS DES1
PIVOT(MAX(AreaOfConcerns) FOR [AreaQuestionType] IN ([Area])) AS DES2

Answer 1

您遇到的问题是子查询中的QuestionID充当键字段，这意味着您的数据透视表将围绕Label围绕该字段旋转，以及LabelQuetionType等。并且由于它将为每一行提供一个不同的值，因此您的数据透视表将具有很多空值。

在子查询中删除QuestionId，您将看到它会按您的意愿进行旋转（尽管我认为您的示例数据在撰写本文时并不准确）。

数据透视表包含其他NULL行

1 个答案: