Subquery Returned More Than 1 Value with the Group By

Question

I have some problem creating query with this tables and codes, I know \"GROUP BY Branch.BranchName\" cause to get multiple records,but,How can avoid this and to do that in sing

Answer 1

Try this one -

SELECT
      b.BranchName
    , Notpayed = SUM(CASE WHEN sp.IsDeptPayed = 1 THEN d.DeptValue END)
    , Payed = SUM(CASE WHEN sp.IsDeptPayed = 0 THEN d.DeptValue END)
FROM dbo.SudentPayments sp 
JOIN dbo.Student s ON sp.StudentId = s.StudentId
JOIN dbo.DeptDesciption d ON sp.DeptDesciptionId = d.DeptDesciptionId
JOIN dbo.Branch b on b.BranchId = s.StudentId
GROUP BY ALL b.BranchName

UPDATE:

SELECT
      b.BranchName
    , Notpayed = ISNULL(t.Notpayed, 0)
    , Payed = ISNULL(t.Payed, 0)
FROM dbo.Branch b
LEFT JOIN (
     SELECT 
            s.StudentId
          , Notpayed = SUM(CASE WHEN sp.IsDeptPayed = 1 THEN d.DeptValue END)
          , Payed = SUM(CASE WHEN sp.IsDeptPayed = 0 THEN d.DeptValue END)
     FROM dbo.SudentPayments sp
     JOIN dbo.Student s ON sp.StudentId = s.StudentId
     JOIN dbo.DeptDesciption d ON sp.DeptDesciptionId = d.DeptDesciptionId
     GROUP BY s.StudentId
) t on b.BranchId = s.StudentId