You would need to use FOR XML
/ XPATH
queries.
Try something like this:
SELECT ID
, CAST(MCI_Numb AS xml).query('/') AS MCI_Numbs
FROM(SELECT DISTINCT ID
, (SELECT MCI_Numb
FROM myTable
WHERE ID = T.ID
FOR XML PATH(''))AS MCI_Numb
FROM myTable AS T)AS T2
FOR XML PATH ('AgencyCode');
Take a look at this link: It explains in detail how to manipulate the sql server into xml and vice versa.