Hello ncccapt,
Please review the SQL concatenation tutorial at
http://www.kodyaz.com/articles/concatenate-using-xml-path.aspx
And here is sample sql concatenate query that will help you solve your question.
select distinct id,
stuff(
(
select
' | ' +
date +': ' + note
from #t t2
where t2.id = t1.id
for xml path('')
), 1,3, '') note
from #t t1