Query to derive number of children "folders/nodes" and children "line items" from a numbering sequence

Question

I am writing a query to determine some information from a work breakdown numbering structure (single column) and it is simple enough to describe, just not sure how to do it in code.  I am trying to determine for the parent items, how many children items
that parent has and how many children folders are under that parent (think of something like a folder/file structure).  The numbering structure looks like this:
1       
1.1     
1.2     
1.2.1   
1.2.2   
1.2.3   
1.2.3.1 
1.2.3.2 
1.2.3.3 
1.2.4   
1.2.5   
1.2.5.1 
1.2.5.2 
1.3     
I would like my query to return this information:
WBS    ChildFolders ChildLineItems
1.1               0                      0
1.2               2                      8
1.3               0                      0
Hope that makes sense!  

Answer 1

I almost have this working in the following query in at least I figure out a way to tell how which ones were the folders and which were the line items with this query (sorry I have different WBS numbers than my example above:
declare @wbs table (wbs varchar(max))
insert @wbs select
'1.1'     as wbs union all select
'1.2'     union all select
'1.2.1'   union all select
'1.2.2'   union all select
'1.2.3'   union all select
'1.3'     union all select
'1.4'     union all select
'1.4.1'   union all select
'1.4.1.1' union all select
'1.4.1.2' union all select
'1.4.2'   union all select
'1.5.1' 
select 
x.wbs
, CASE count(x.wbs) WHEN 1 THEN 'LineItem' ELSE 'Folder/Has Children' END as Description
from
@wbs x
,(select
from @wbs w) as data
where
data.wbs like x.wbs + '%'
group by
x.wbs
This give me these results:
WBS Description
1.1 LineItem
1.2 Folder/Has Children
1.2.1 LineItem
1.2.2 LineItem
1.2.3 LineItem
1.3 LineItem
1.4 Folder/Has Children
1.4.1 Folder/Has Children
1.4.1.1 LineItem
1.4.1.2 LineItem
1.4.2 LineItem
1.5.1 LineItem
I would just like to add the columns with the counts of ChildFolders and ChildLineItems like my example above.
For example the results for 1.4 would look like this:
WBS Description
ChildFolders ChildLineItems
1.4 Folder/Has Children
1 3