In stored procedure not getting expected result - sql

Question

I have 3 tables Surveys, RightsonSurveys and Users.
I want the result as shown in the screenshot below where all survey list should be shown but only those surveys should be checked where user has IsViewer or IsAuthor is true:
But instead, I'm getting this result:
In the RightsOnSurveys table I am providing permissions to access particular surveys. For this I have created a view like this:
ALTER VIEW [dbo].[vRightsOnSurveys]
AS
SELECT
ID SurveyID, 0 ID, -1 UserID,
CAST(1 AS bit) IsViewer, CAST(1 AS bit) IsAuthor, Name
FROM
Surveys
UNION
SELECT
SurveyID, ID, UserID, IsViewer, IsAuthor, NULL AS Name
FROM
RightsOnSurveys
GO
SELECT * FROM [dbo].[vRightsOnSurveys]
Here is output of this view:
and selecting from this view in the stored procedure for front end where SurveyID and UserID could be null or have data
ALTER PROCEDURE [dbo].[GetUserRightsOnSurveys]
(#SurveyID int = NULL,
#UserID int = NULL)
AS
BEGIN
SELECT
ID, UserID, SurveyID, ros.IsViewer, IsAuthor, ros.Name
FROM
vRightsOnSurveys ros
WHERE
(ros.SurveyID = #SurveyID OR #SurveyID IS NULL)
AND (ros.UserID = #UserID OR #UserID IS NULL)
END
With this procedure, I am not getting results as per my requirements.
Can somebody please help me? Thanks in advance..

Answer 1

You need left join in the view as follows:
alter view [dbo].[vRightsOnSurveys]
as
select s.ID SurveyID,
coalesce(r.id,0) ID,
coalesce(r.userid,-1) UserID,
coalesce(r.isviewer,cast(1 as bit)) IsViewer,
coaleace(r.isauthor,cast(1 as bit)) IsAuthor,
s.Name
from Surveys s
left Join rightonsurvey r on r.surveyid = s.id;

Answer 2

I have to change my whole query and got my results as per my requirements here is the query..
select usr.ID as UserID,usr.Login,usr.Name as UserName, sur.ID as SurveyID,sur.Name
,ISNULL((select r.ID from RightsOnSurveys r where r.UserID = usr.ID and r.SurveyID
= sur.ID),0) as ID
,ISNULL((select r.IsViewer from RightsOnSurveys r where r.UserID = usr.ID and
r.SurveyID = sur.ID),cast(0 as bit)) as IsViewer
,ISNULL((select r.IsAuthor from RightsOnSurveys r where r.UserID = usr.ID and
r.SurveyID = sur.ID),cast(0 as bit)) as IsAuthor
from Users usr,Surveys sur