Question

sorry if this has already been posted but I’ve been through umpteen posts on pivoting the past day and still havn’t been able to get the result i want.

Background:

In short, I am developing a set of tables that will store a questionnaire dynamically.
I wont go into detail of it probably isnt relative.

I basically want to query the table that stores the user input for a set question.
These questions branch off each other allowing me to show columns and rows per question etc.

Anyway this query:

SELECT qr.*, Question   
    FROM QuestionRecord qr
    INNER JOIN 
    QuestionRecord P
    ON P.ID = qr.ParentQuestionRecordId
    JOIN Questions q ON q.ID = qr.QuestionID

Produces this result set :

ID FormRecordId QuestionId ParentQuestionRecordId   Value            Question    
---------------------------------------------------------------------------------------
2     1           31            1                Consultancy      Eligible project costs
3     1           32            2                NULL             Date
4     1           33            2                25000            Cash Costs £
5     1           34            2                NULL             In Kind Costs £
6     1           35            2                25000            Total Costs
7     1           31            1                Orchard day x2   Eligible project costs
8     1           32            7                NULL             Date
9     1           33            7                15000            Cash Costs £
10   1           34            7                NULL             In Kind Costs £
11   1           35            7                15000            Total Costs

I basically want to Pivot(I think) these rows to look like so:

Eligible project costs    Date     Cash Costs £     In Kind Costs   Total Costs
--------------------------------------------------------------------------------
Consultancy               NULL        25000            NULL           25000
Orchard day x2            NULL        15000            NULL           15000

I have tried:

SELECT [Eligible project costs],[Date],[Cash Costs £],[In Kind Costs £],[Total Costs]
FROM
(
    SELECT  qr.*, Question
    FROM QuestionRecord qr
    INNER JOIN 
    QuestionRecord P
    ON P.ID = qr.ParentQuestionRecordId
    JOIN Questions q ON q.ID = qr.QuestionID    
)pvt

PIVOT
(
    MIN(Value)
    FOR Question IN
    ([Eligible project costs],[Date],[Cash Costs £],[In Kind Costs £],[Total Costs])
)pivotTable

but this returns each column on a seperate row:

Eligible project costs    Date     Cash Costs £     In Kind Costs   Total Costs
--------------------------------------------------------------------------------
Consultancy               NULL        NULL              NULL             NULL        
NULL                      NULL        NULL              NULL             NULL 
NULL                      NULL       25000              NULL             NULL
NULL                      NULL        NULL              NULL             NULL
NULL                      NULL        NULL              NULL            25000

So that’s as close as i have managed to get with it, i was wondering if you guys/girls could help me out 🙂

Thanks!

Answer 1

Try the following changes to your script (strikethrough = deleted, bold = added):

SELECT [Eligible project costs],[Date],[Cash Costs £],[In Kind Costs £],[Total Costs]
FROM
(
    SELECT  qr.*,
      grp = ROW_NUMBER() OVER (PARTITION BY qr.QuestionId ORDER BY qr.ID),
      Value,
      Question
    FROM QuestionRecord qr
    INNER JOIN 
    QuestionRecord P
    ON P.ID = qr.ParentQuestionRecordId
    JOIN Questions q ON q.ID = qr.QuestionID    
)pvt

PIVOT
(
    MIN(Value)
    FOR Question IN
    ([Eligible project costs],[Date],[Cash Costs £],[In Kind Costs £],[Total Costs])
)pivotTable

I think it must give your the result you are after.