This is a different option using Pattern Splitting (using Lynn's sample data).
select
*
from dbo.TestData td
cross apply (select stuff((select ',' + ca.Item
from dbo.PatternSplitCM(td.TestValue,'%[0-9]%') ca
where ca.Matched = 1
for xml path(''),TYPE).value('.','nvarchar(max)'),1,1,'')) ca3(IDs)
The function and explanation can be found in here:
http://www.sqlservercentral.com/articles/String+Manipulation/94365/
Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?
How to post data/code on a forum to get the best help: Option 1 / Option 2