No Column Name on executing stored procedure

Question

I am working on this stored proc which is suppose to give values based on the input Quarter and year.

The stored proc has dynamic 2 columns which has the Sum of Amounts. But in place of the column name its showing No column name for those 2 columns (S1, P1) and even not giving the values.

create proc [dbo].[Summary]
@Quarter int,
@Year int
AS
BEGIN

Declare @SC AS decimal(18,0)
Declare @PO AS decimal(18,0)
Declare @INV AS decimal(18,0)

SELECT BD.id, 
       BD.project, 
       status, 
       (SELECT Sum(amount) AS S1 
        FROM   details a 
        WHERE  status = 'S1' 
               AND BD.project = a.project), 
       (SELECT Sum(amount) AS P1 
        FROM   details b 
        WHERE  status = 'P1' 
               AND BD.project = b.project) 
FROM   projectdetails (nolock) BD 
       INNER JOIN details (nolock) D 
               ON BD.project = D.project 
WHERE  BD.quarter = @Quarter 
       AND BD.year = @Year 
       AND BD.project = D.project 
GROUP  BY BD.lineid, 
          BD.project, 
          status 
END

Answer 1

When you use a function in a column list, the original column name is not retained. You need to use a column alias. For example:

SELECT BD.ID,
        BD.Project,
        Status,
        (SELECT Sum(amount) AS S1 
         FROM   details a 
         WHERE  status = 'S1' 
                AND BD.project = a.project) AS SumS1, --Added alias here
        (SELECT Sum(amount) AS P1 
         FROM   details b 
         WHERE  status = 'P1' 
                AND BD.project = b.project) AS SumP1 --And here
FROM ...

As to why you are not getting data, that is because your query is not returning any data. Try running those select statements separately to see where the problem is.

Answer 2

You need to give them alias outside the Subquery

create proc [dbo].[Summary]
@Quarter int,
@Year int
AS
BEGIN

Declare @SC AS decimal(18,0)
Declare @PO AS decimal(18,0)
Declare @INV AS decimal(18,0)

SELECT BD.ID, 
BD.Project,
Status,
(Select SUM(Amount) from Details a where Status='S1' and BD.Project = a.Project) as S1, 
(Select SUM(Amount) from Details b where Status='P1' and BD.Project = b.Project) as P1
 FROM ProjectDetails (NOLOCK) BD
 inner join Details (NOLOCK) D on BD.Project = D.Project

 WHERE BD.Quarter = @Quarter and BD.Year = @Year and BD.Project = D.Project
 Group By BD.LineID, BD.Project,Status
END

Answer 3

Use alias name to those two sub-queries to get column names in result. It can be rewritten like this

SELECT BD.id, 
       BD.project, 
       status, 
       Sum(case when status = 'S1' then amount else 0 end) AS S1,
       Sum(case when status = 'P1' then amount else 0 end) AS P1 
FROM   projectdetails BD 
       INNER JOIN details  D 
               ON BD.project = D.project 
WHERE  BD.quarter = @Quarter 
       AND BD.year = @Year 
       AND BD.project = D.project 
GROUP  BY BD.lineid, 
          BD.project, 
          status