Pivot table giving wrong result - sql

Question

Below code gives me result set as shown in first image
SELECT dbo.tbStudent.Name, dbo.tbStudent.RegNo, dbo.tbFee.PID, dbo.tbFee.Purpose, dbo.tbFee.AmountPaid, dbo.tbFee.StudentID, dbo.tbFee.Date, dbo.tbFee.FeeID,
dbo.tbFee.SemID, dbo.tbFee.CourseID, dbo.tbFee.ModeOfPayment, dbo.tbFee.CheckNo, dbo.tbFee.DDNo, dbo.tbFee.HostelDDNo, dbo.tbFee.FRID,
dbo.tbStudent.Parentage, dbo.tbCourse.Name AS Course, ISNULL(dbo.tbSemester.SemName, ' + #st +') AS Semester
FROM dbo.tbFee INNER JOIN
dbo.tbStudent ON dbo.tbFee.StudentID = dbo.tbStudent.StudentID INNER JOIN
dbo.tbCourse ON dbo.tbFee.CourseID = dbo.tbCourse.CourseID LEFT OUTER JOIN
dbo.tbSemester ON dbo.tbFee.SemID = dbo.tbSemester.SemID Where tbFee.SemID=1
However using Pivot table I need result as below:
My code for pivot table is :
SET #values = '';
If(#SemID=0)
BEGIN
SELECT #values = #values +'['+ CAST(PurPose AS varchar(max))+ ']' + ','
FROM tbFee Where CourseID=#CourseID
SET #values = SUBSTRING(#values, 1, Len(#values) - 1)
END
ELSE
BEGIN
SELECT #values = #values +'['+ CAST(PurPose AS varchar(max))+ ']' + ','
FROM tbFee Where SemID=#SemID
SET #values = SUBSTRING(#values, 1, Len(#values) - 1)
END
Declare #st nvarchar(max)
set #st='''Not Available''';
declare #q nvarchar(max)
set #q = '
Select * from(
SELECT dbo.tbStudent.Name, dbo.tbStudent.RegNo, dbo.tbFee.PID, dbo.tbFee.Purpose, dbo.tbFee.AmountPaid, dbo.tbFee.StudentID, dbo.tbFee.Date, dbo.tbFee.FeeID,
dbo.tbFee.SemID, dbo.tbFee.CourseID, dbo.tbFee.ModeOfPayment, dbo.tbFee.CheckNo, dbo.tbFee.DDNo, dbo.tbFee.HostelDDNo, dbo.tbFee.FRID,
dbo.tbStudent.Parentage, dbo.tbCourse.Name AS Course, ISNULL(dbo.tbSemester.SemName, ' + #st +') AS Semester
FROM dbo.tbFee INNER JOIN
dbo.tbStudent ON dbo.tbFee.StudentID = dbo.tbStudent.StudentID INNER JOIN
dbo.tbCourse ON dbo.tbFee.CourseID = dbo.tbCourse.CourseID LEFT OUTER JOIN
dbo.tbSemester ON dbo.tbFee.SemID = dbo.tbSemester.SemID Where tbFee.SemID=1
) as x
pivot (
max(AmountPaid)
for Purpose in (' + #values + ')
) as pvt
'
exec (#q)
I am getting Values of Purpose columns in #values due to the reason that number of rows can change. However instead of getting result as single row for same student having same regNo , I am getting below result :
But what I am getting is below:

Answer 1

In the source query for your PIVOT, you should only specify those columns which are involved in the actual pivot - namely dbo.tbStudent.Name, dbo.tbStudent.RegNo, dbo.tbFee.Purpose, dbo.tbFee.AmountPaid.
SELECT
dbo.tbStudent.Name,
dbo.tbStudent.RegNo,
dbo.tbFee.Purpose,
dbo.tbFee.AmountPaid
FROM
dbo.tbFee
INNER JOIN dbo.tbStudent ON dbo.tbFee.StudentID = dbo.tbStudent.StudentID
INNER JOIN dbo.tbCourse ON dbo.tbFee.CourseID = dbo.tbCourse.CourseID
LEFT OUTER JOIN dbo.tbSemester ON dbo.tbFee.SemID = dbo.tbSemester.SemID
Where tbFee.SemID=1
If any other columns apart from these are present, they will be factored into the pivot computation, and you will get multiple rows accordingly.