Ordering hierarchy from recursive query results in SQL 2005

Question

I\'ve got a \'Task\' table with the following columns (the TaskOrder is for ordering the children within the scope of the parent, not the entire table):

TaskId
Pa         


        

Answer 1

You don't need all that union stuff, I think this should work:

select
 TaskId,
 ParentTaskId,
 [Name],
 COALESCE(ParentTaskId, TaskId) as groupField
from
 task
order by
 COALESCE(ParentTaskId, TaskId), ParentTaskId, TaskId