Data from questions and responses associated to an customer - sql

Question

I have the below data format in my tables, a customer answers test questions and those responses are saved in a table. Questions are grouped as sections. I am trying to get responses associated to a test and for certain sections.
Sectiontable
SecID SecName
1 Box
2 square
3 circle
CustomerTable
CID CName
92 John
93 Andrew
94 Chris
TestTable
testID testkey SecID
18 T1 1
19 T11 1
21 T2 2
22 T21 2
34 T3 3
35 T4 3
CustomerTestresponse
responseID CID testID responseText
1 92 18 T1Text
2 92 19 T11Text
3 92 34 T3Text
4 92 35 T4Text
5 92 22 T21Text
6 93 19 Myresponse
7 93 34 vendor
8 93 21 cutomerout
Expected Query output:
CID T1KeyResponse T11KeyResponse T3KeyResponse T4KeyResponse
92 T1Text T11Text T3Text T4Text
93 Myresponse vendor

Answer 1

It is a FOUR (4) step solution
-- adapted with great reverence from https://dba.stackexchange.com/questions/119844/how-to-pivot-without-fixed-columns-in-tsql
--(1) Declare variables
DECLARE
#cols AS NVARCHAR(MAX)
,#query AS NVARCHAR(MAX)
;
--(2) Concatenate list of new column headers, using FOR XML PATH and STUFF:
-- see Where SecID <> 2 (you may want to change this)
SELECT #cols =
STUFF(
(SELECT DISTINCT
',' + QUOTENAME(t.testkey + 'KeyResponse')
FROM qandrResponse as r
Left Join qandrTest as t
On r.testID = t.testID
Where SecID <> 2 -- you may want to filter differently
Order By ',' + QUOTENAME(t.testkey + 'KeyResponse')
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,''
);
-- Select #cols; -- uncomment to see the list, drag right side open to see full list
--(3) Create the full sql string that will be executed, using #cols from above
set #query
= N'SELECT CID, ' + #cols + N'
From (SELECT
r.CID
,t.testkey + ''' + 'KeyResponse' + N''' as Keys
,responseText
FROM qandrResponse as r
Left Join qandrTest as t
On r.testID = t.testID
) x
Pivot (
max(responseText) for Keys IN (' + #cols + N')
) as p';
-- Select #query; -- uncomment to see sql, prettyprint with http://www.dpriver.com/pp/sqlformat.htm
--(4) Execute the query
exec sp_executesql #query
-- Results
--CID T11KeyResponse T1KeyResponse T3KeyResponse T4KeyResponse
--92 T11Text T1Text T3Text T4Text
--93 Myresponse NULL vendor NULL