Question

I have a StaffLookup table which looks like this.

UserSrn | UserName | ManagerSrn
===============================
ABC1    | Jerome   | NULL
ABC2    | Joe      | ABC1
ABC3    | Paul     | ABC2
ABC4    | Jack     | ABC3
ABC5    | Daniel   | ABC3
ABC6    | David    | ABC2
ABC7    | Ian      | ABC6
ABC8    | Helen    | ABC6

The staff structure looks like this.

|- Jerome
 |
 |- Joe
 ||
 ||- Paul
 |||
 |||- Jack
 |||
 |||- Daniel
 ||
 ||- David
 |||
 |||- Ian
 |||
 |||- Helen

I have a list of SurveyResponses that looks like this.

UserSrn | QuestionId | ResponseScore
====================================
ABC2    | 1          | 5
ABC2    | 3          | 4
ABC4    | 16         | 3
...

What I am trying to do sounds pretty simple but I am struggling to find a neat, quick way of doing it. I want to create a sproc that takes an Srn and returns back all the staff under that Srn in the structure.

If there is a score for QuestionId of 16 then that indicates a completed survey. I would like to return a line for the Srn entered (The top manager) with a count of completed surveys for the direct reports under that manager. Under that I would like each manager under the original manager with a count of completed surveys for each of their direct reports and so on.

I would like to see the data as such below when I set the top manager to be Joe (ABC2).

UserName | Completed | Total
============================
Joe      | 2         | 2
Paul     | 1         | 2
David    | 0         | 2
TOTAL    | 3         | 6

Answer 1

I believe this works, based on the information provided. It shouldn’t be too difficult to turn this into an SP with @mgrSrn as the input parameter.

declare @users table
(UserSrn char(4)
,UserName varchar(6)
,ManagerSrn char(4)
)

INSERT @users
      SELECT 'ABC1','Jerome',NULL
UNION SELECT 'ABC2','Joe','ABC1'
UNION SELECT 'ABC3','Paul','ABC2'
UNION SELECT 'ABC4','Jack','ABC3'
UNION SELECT 'ABC5','Daniel','ABC3'
UNION SELECT 'ABC6','David','ABC2'
UNION SELECT 'ABC7','Ian','ABC6'
UNION SELECT 'ABC8','Helen','ABC6'

declare @results table
(UserSrn char(4)
,QuestionId tinyint
,ResponseScore tinyint
)

INSERT @results
      SELECT 'ABC2',1,1
UNION SELECT 'ABC4',16,1

declare @mgrSrn char(4)
set @mgrSrn = 'ABC2' -- Joe


;WITH completedCTE
AS
(
    SELECT c.*
           ,CASE WHEN r.UserSrn IS NOT NULL
                 THEN 1
                 ELSE 0
            END     AS completeCount
           ,1       AS totalCount
    FROM      @users as c
    LEFT JOIN @results AS r
    ON        r.UserSrn    = c.UserSrn
    AND       r.QuestionId = 16
)
,recCTE
AS
(
    SELECT  UserSrn
            ,UserName
            ,CAST(NULL AS CHAR(4)) AS ManagerSrn
            ,1 as level
            ,completeCount 
            ,totalCount
    FROM completedCTE
    WHERE UserSrn = @mgrSrn

    UNION ALL

    SELECT t.UserSrn
           ,t.UserName
           ,t.ManagerSrn
           ,c.level + 1 AS level
           ,t.completeCount AS completeCount
           ,t.totalCount AS totalCount
    FROM completedCTE AS t
    JOIN recCTE AS c
    ON   c.UserSrn = t.ManagerSrn


)
,resultCTE
AS
(
    SELECT r.ManagerSrn
           ,t.UserName
           ,r.level
           ,SUM(completeCount) completeCount
           ,SUM(totalCount)    totalCount
    FROM recCTE AS r
    JOIN @users     AS t
    ON  t.UserSrn = r.ManagerSrn
    WHERE r.ManagerSrn IS NOT NULL
    GROUP BY r.ManagerSrn
             ,t.UserName 
             ,r.level

)
SELECT UserName
       ,completeCount
       ,totalCount
FROM resultCTE  
ORDER BY level
         ,UserName   
OPTION (MAXRECURSION 0)