Get distinct records if more than one select column

Question

Hi,
I have a table .
ParentId
refid
TaskNo
[TaskOwner]
[UpdatedBy]
Remarks
Description
100
NULL
100
user2
user2
hi
hi
100
100
100.1
user1
user1
this 
this 
100
100.2
100.2.1
user2
user1
is 
is 
101
NULL
101
user1
user2
the 
the 
102
102
102.1
user2
user2
rem
desc
103
103.1
103.1.2
user1
user1
rem1
desc1
Previously I able to show parentid where refid is null , but now I would like to show 102,103 values also.
Desired result :
ParentId
refid
TaskNo
[TaskOwner]
[UpdatedBy]
Remarks
Description
100
NULL
100
user2
user2
hi
hi
101
NULL
101
user1
user2
the 
the 
102
102
102.1
user2
user2
rem
desc
103
103.1
103.1.2
user1
user1
rem1
desc1
Please help me to write query..
Thank you.

Answer 1

Thank you Visakh16..
I got solution ..
  seq=4 for the record is nothing but sql is partitioning records first and filtering .
If i move the filter inside and working is fine..
SELECT Seq,ParentId,refid,TaskNo,TaskOwner,UpdatedBy,Remarks
FROM
SELECT *,ROW_NUMBER() OVER (PARTITION BY ParentId ORDER BY refid) AS Seq
FROM [t_TaskMaster] WHERE STATUS NOT IN ('Deleted', 'Completed', 'Closed') AND [TaskOwner] = @UserName
AND UpdatedBy <> @UserName
)t
WHERE Seq=1
Filter should be inside only
As ROW_NUMBER logic should be applied only after filtering. otherwise you'll miss required records
Please Mark This As Answer if it helps to solve the issue Visakh ---------------------------- http://visakhm.blogspot.com/ https://www.facebook.com/VmBlogs