Hi,
I have some links for you. The first linke gives you info how you Specify a Wildcard Character with the SQL Toolkit and the second one is about "Using the LIKE keyword in a SQL query ". I hope it helps.
http://digital.ni.com/public.nsf/websearch/8854A9FF0CB48A71862566020067BD09?OpenDocument
http://forums.ni.com/ni/board/message?board.id=250&message.id=4926&requireLogin=False
TN