I have a order_detail table with the primary key order_detail_id and the foregin keys order_id and product_id. Also I have three other fields, A, B and C, to describe the nature of this order detail. A product_id can be existed on different order_id
but not in a single order_id (ie no duplicate product_id on a order). What I want the dataset to return is when passing the order_id, it could be single or multiple order_id, the query will give me the order_detail_id in comma seperate string if two or more
of the same product_id found on the multiple order_ids and the same value on the other three fields, A, B and C, ie I would like to group by all the order_detail_id in a single row if those conditions are met. Thanks a million.
Kahlua