퍼온곳 : http://www.soqool.com/servlet/board?cmd=view&cat=100&subcat=1010&seq=294&page=1&position=1#294 글쓴이 : 김홍선 문제) What's the proper way to query for a total for a value and also the total for all values for a particular set of parameters? For example, I have a table of orders that customer service reps make. The reps place multiple orders per day for various products. I'm trying to pull a repor..