Question

Id  Answer  NoOfComments
18      1        2
19      2        0
20      3        0
21      4        0
22      5        1

The datas given above is the output obtained from following StoredProcedure.

 ALTER PROCEDURE [dbo].[BlogAnswerByQuestionId]
(
    @QuestionId int
)
AS
BEGIN
    SELECT [HRM_BlogAnswer].[Id] as Id
          ,[HRM_BlogAnswer].[Answer]
          ,(SELECT COUNT(*) FROM HRM_BlogVote  WHERE HRM_BlogVote.AnswerId  =[HRM_BlogAnswer] .[Id]) AS NoOfComments

        FROM [HRM_BlogAnswer] 
    WHERE [HRM_BlogAnswer].[QuestionId] = @QuestionId


END

Now I need to find the percentage value of each answer according to the value in the field NoOfComments. I can give some more information.
1.datas in table HRM_blogquestion as follows.

Id  Question    CreatedDate          CreatedBy
8   tttt    2012-07-03 17:36:47.513        1

2.datas in table HRM_Bloganswer as follows

Id  QuestionId  Answer
18  8             1
19  8             2
20  8             3
21  8             4
22  8             5

3.datas in table HRM_Blogvote as follows

Id  QuestionId  AnswerId    EmployeeId
19  8                18        1
23  8                22        24
24  8                18        25

From these table datas i write the above SP And now i need to find percentage of voted answers

Please help me to solve this.

Answer 1

Rather than creating this table @Results, you could turn your existing query into a common table expression, and query that instead. The final query is the one you want:

declare @Results table (
    Id int not null,
    Answer int not null,
    NoOfComments int not null
)
insert into @Results (Id,Answer,NoOfComments) values
(18,      1,        2),
(19,      2,        0),
(20,      3,        0),
(21,      4,        0),
(22,      5,        1)

select *,((NoOfComments * 100.0) / SUM(NoOfComments) OVER (PARTITION BY (1))) as Pcnt
from @Results

Result:

Id          Answer      NoOfComments Pcnt
----------- ----------- ------------ ---------------------------------------
18          1           2            66.666666666666
19          2           0            0.000000000000
20          3           0            0.000000000000
21          4           0            0.000000000000
22          5           1            33.333333333333

---

So, your proc would be:

 ALTER PROCEDURE [dbo].[BlogAnswerByQuestionId]
(
    @QuestionId int
)
AS
BEGIN
    ;With Results as (
    SELECT [HRM_BlogAnswer].[Id] as Id
          ,[HRM_BlogAnswer].[Answer]
          ,(SELECT COUNT(*) FROM HRM_BlogVote  WHERE HRM_BlogVote.AnswerId  =[HRM_BlogAnswer] .[Id]) AS NoOfComments

        FROM [HRM_BlogAnswer] 
    WHERE [HRM_BlogAnswer].[QuestionId] = @QuestionId
    )
    select *,((NoOfComments * 100.0) / SUM(NoOfComments) OVER (PARTITION BY (1))) as Pcnt
    from Results

END