Question

I have an table like this

Id       Name        ReportingId
==
1        Stala       Null
2        Coma        1
3        Rita        1
4        Rosy        2
5        sss         4

I want a recursive query to find all reporting ids in single column.

For example for id 5 the output should be up to null always

4
2
1
null

Answer 1

Here’s an example using a recursive common table expression (CTE):

; with  cte as
        (
        select  ReportingID
        from    YourTable
        where   id = 5
        union all
        select  yt.ReportingID
        from    YourTable yt
        join    cte
        on      cte.ReportingID = yt.id
        )
select  *
from    cte

Example on SQL Fiddle.