SQL recursive query

Question

I have a Table Category,

1) Id
2) CategoryName
3) CategoryMaster

with data as:

1 Computers 0
2 Software 1
3 Multimedia 1

Answer 1

Just swap the fields in the join clause:

WITH CategoryTree AS
        (
        SELECT  *, 0 AS Generation    
        FROM    dbo.Category
        WHERE   CategoryName = 'Animation'
        UNION ALL
        SELECT  Cat.*, Generation + 1    
        FROM    CategoryTree
        JOIN    dbo.Category AS Cat
        ON      Cat.Id = CategoryTree.CategoryMaster
        )
SELECT  *
FROM    CategoryTree